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Table 1: single level parameters (last reviewed on 08 23 Apr 2021 )

Name	Units	Variable name in CDS API	Shortname	Param ID	Access type	fc	an	Note
10 metre U wind component	m s^-1	10m_u_component_of_wind	10u	165	Fast access		X
10 metre V wind component	m s^-1	10m_v_component_of_wind	10v	166	Fast access	X	X
10 metre wind gust in the last 3 hours	m s^-1	10m_wind_gust_in_the_last_3_hours	10fg3	228028			X	Only available from 21 June 2016 00UTC
2 metre dewpoint temperature	K	2m_dewpoint_temperature	2d	168	Fast access		X
2 metre temperature	K	2m_temperature	2t	167	Fast access		X
Ammonium aerosol optical depth at 550 nm	dimensionless	ammonium_aerosol_optical_depth_550nm	amaod550	210251	Fast access		X	Only available from 9 July 2019 00UTC
Asymmetry factor at 1020 nm	dimensionless	asymmetry_factor_1020nm	asymmetry1020	215164			X	Only available from 26 June 2018 12UTC
Asymmetry factor at 1064 nm	dimensionless	asymmetry_factor_1064nm	asymmetry1064	215165			X	Only available from 26 June 2018 12UTC
Asymmetry factor at 1240 nm	dimensionless	asymmetry_factor_1240nm	asymmetry1240	215166			X	Only available from 26 June 2018 12UTC
Asymmetry factor at 1640 nm	dimensionless	asymmetry_factor_1640nm	asymmetry1640	215167			X	Only available from 26 June 2018 12UTC
Asymmetry factor at 2130 nm	dimensionless	asymmetry_factor_2130nm	asymmetry2130	215179			X	Only available from 26 June 2018 12UTC
Asymmetry factor at 340 nm	dimensionless	asymmetry_factor_340nm	asymmetry340	215150			X	Only available from 26 June 2018 12UTC
Asymmetry factor at 355 nm	dimensionless	asymmetry_factor_355nm	asymmetry355	215151			X	Only available from 26 June 2018 12UTC
Asymmetry factor at 380 nm	dimensionless	asymmetry_factor_380nm	asymmetry380	215152			X	Only available from 26 June 2018 12UTC
Asymmetry factor at 400 nm	dimensionless	asymmetry_factor_400nm	asymmetry400	215153			X	Only available from 27 June 2018 00UTC
Asymmetry factor at 440 nm	dimensionless	asymmetry_factor_440nm	asymmetry440	215154			X	Only available from 26 June 2018 12UTC
Asymmetry factor at 469 nm	dimensionless	asymmetry_factor_469nm	asymmetry469	215155			X	Only available from 26 June 2018 12UTC
Asymmetry factor at 500 nm	dimensionless	asymmetry_factor_500nm	asymmetry500	215156			X	Only available from 26 June 2018 12UTC
Asymmetry factor at 532 nm	dimensionless	asymmetry_factor_532nm	asymmetry532	215157			X	Only available from 26 June 2018 12UTC
Asymmetry factor at 550 nm	dimensionless	asymmetry_factor_550nm	asymmetry550	215158			X	Only available from 26 June 2018 12UTC
Asymmetry factor at 645 nm	dimensionless	asymmetry_factor_645nm	asymmetry645	215159			X	Only available from 26 June 2018 12UTC
Asymmetry factor at 670 nm	dimensionless	asymmetry_factor_670nm	asymmetry670	215160			X	Only available from 26 June 2018 12UTC
Asymmetry factor at 800 nm	dimensionless	asymmetry_factor_800nm	asymmetry800	215161			X	Only available from 26 June 2018 12UTC
Asymmetry factor at 858 nm	dimensionless	asymmetry_factor_858nm	asymmetry858	215162			X	Only available from 26 June 2018 12UTC
Asymmetry factor at 865 nm	dimensionless	asymmetry_factor_865nm	asymmetry865	215163			X	Only available from 26 June 2018 12UTC
Black Carbon Aerosol Optical Depth at 550nm	dimensionless	black_carbon_aerosol_optical_depth_550nm	bcaod550	210211	Fast access		X
Boundary layer height	m	boundary_layer_height	blh	159		X	X
Clear-sky direct solar radiation at surface	J m^-2	clear_sky_direct_solar_radiation_at_surface	cdir	228022		X	X
Clear sky surface photosynthetically active radiation	J m^-2	clear_sky_surface_photosynthetically_active_radiation	parcs	20		X	X	Only available from 24 January 2017 12UTC
Cloud base height	m	cloud_base_height	cbh	228023		X	X
Convective available potential energy	J kg^-1	convective_available_potential_energy	cape	59		X	X
Convective inhibition	J kg^-1	convective_inhibition	cin	228001		X	X
Convective precipitation	m	convective_precipitation	cp	143		X	X
Direct solar radiation	J m^-2	direct_solar_radiation	dsrp	47		X	X	Only available from 24 January 2017 12UTC
Downward UV radiation at the surface	J m^-2	downward_uv_radiation_at_the_surface	uvb	57		X	X
Dry deposition of ammonium aerosol	kg m^-2 s^-1	dry_deposition_of_ammonium_aerosol	aerddpam	215206		X	X	Only available from 9 July 2019 00UTC
Dry deposition of coarse-mode nitrate aerosol	kg m^-2 s^-1	dry_deposition_of_coarse_mode_nitrate_aerosol	aerddpnic	215192		X	X	Only available from 9 July 2019 00UTC
Dry deposition of dust aerosol (0.03 - 0.55 um)	kg m^-2 s^-1	dry_deposition_of_dust_aerosol_0.03-0.55um	aerddpdus	215028		X	X	Only available from 26 June 2018 12UTC
Dry deposition of dust aerosol (0.55 - 9 um)	kg m^-2 s^-1	dry_deposition_of_dust_aerosol_0.55-9um	aerddpdum	215029		X	X	Only available from 26 June 2018 12UTC
Dry deposition of dust aerosol (9 - 20 um)	kg m^-2 s^-1	dry_deposition_of_dust_aerosol_9-20um	aerddpdul	215030		X	X	Only available from 26 June 2018 12UTC
Dry deposition of fine-mode nitrate aerosol	kg m^-2 s^-1	dry_deposition_of_fine_mode_nitrate_aerosol	aerddpnif	215191		X	X	Only available

from 26 June 2018 12UTC

from 9 July 2019 00UTC
Dry deposition of hydrophilic black carbon aerosol	kg m^-2 s^-1	dry_deposition_of_hydrophilic_black_carbon_aerosol	aerddpbchphil	215068

Only

	X	X	Only available from 26 June 2018 12UTC
Dry deposition of hydrophilic organic matter aerosol	kg m^-2 s^-1	dry_deposition_of_hydrophilic_organic_matter_aerosol	aerddpomhphil	215052		X	X	Only available from 26 June 2018 12UTC
Dry deposition of hydrophobic black carbon aerosol	kg m^-2 s^-1	dry_deposition_of_hydrophobic_black_carbon_aerosol	aerddpbchphob	215067		X	X	Only available from 26 June 2018 12UTC
Dry deposition of hydrophobic organic matter aerosol	kg m^-2 s^-1	dry_deposition_of_hydrophobic_organic_matter_aerosol	aerddpomhphob	215051		X	X	Only available from 26 June 2018 12UTC
Dry deposition of sea salt aerosol (0.03 - 0.5 um)	kg m^-2 s^-1	dry_deposition_of_sea_salt_aerosol_0.03-0.5um	aerddpsss	215004		X	X	Only available from 26 June 2018 12UTC
Dry deposition of sea salt aerosol (0.5 - 5 um)	kg m^-2 s^-1	dry_deposition_of_sea_salt_aerosol_0.5-5um	aerddpssm	215005		X	X	Only available from 26 June 2018 12UTC
Dry deposition of sea salt aerosol (5 - 20 um)	kg m^-2 s^-1	dry_deposition_of_sea_salt_aerosol_5-20um	aerddpssl	215006		X	X	Only available from 26 June 2018 12UTC
Dry deposition of sulphate aerosol	kg m^-2 s^-1	dry_deposition_of_sulphate_aerosol	aerddpsu	215082		X	X	Only available from 26 June 2018 12UTC
Dust aerosol (0.03 - 0.55 um) optical depth	dimensionless	dust_aerosol_0.03-0.55um_optical_depth_550nm	aeroddus	215046			X
Dust aerosol (0.55 - 9 um) optical depth	dimensionless	dust_aerosol_0.55-9um_optical_depth_550nm	aeroddum	215047			X
Dust aerosol (9 - 20 um) optical depth	dimensionless	dust_aerosol_9-20um_optical_depth_550nm	aeroddul	215048			X
Dust Aerosol Optical Depth at 550nm	dimensionless	dust_aerosol_optical_depth_550nm	duaod550	210209	Fast access		X
Evaporation	m of water equivalent	evaporation	e	182		X	X
Forecast albedo	(0 - 1)	forecast_albedo	fal	243		X	X
Friction velocity	m s^-1	friction_velocity	zust	228003		X	X
Height of convective cloud top	m	height_of_convective_cloud_top	hcct	228046		X	X	Only available from 24 January 2017 12UTC
High cloud cover	(0 - 1)	high_cloud_cover	hcc	188			X
Hydrophilic black carbon aerosol optical depth	dimensionless	hydrophilic_black_carbon_aerosol_optical_depth_550nm	aerodbchphil	215080			X
Hydrophilic organic matter aerosol optical depth	dimensionless	hydrophilic_organic_matter_aerosol_optical_depth_550nm	aerodomhphil	215064			X
Hydrophobic black carbon aerosol optical depth	dimensionless	hydrophobic_black_carbon_aerosol_optical_depth_550nm	aerodbchphob	215079			X
Hydrophobic organic matter aerosol optical depth	dimensionless	hydrophobic_organic_matter_aerosol_optical_depth_550nm	aerodomhphob	215063			X
Lake cover	(0 - 1)	lake_cover	cl	26			X	Only available from 03 September 2015 00UTC
Land-sea mask	(0 - 1)	land_sea_mask	lsm	172	Fast access		X
Large-scale precipitation	m	large_scale_precipitation	lsp	142		X	X
Leaf area index, high vegetation	m² m^-2	leaf_area_index_high_vegetation	lai_hv	67			X
Leaf area index, low vegetation	m² m^-2	leaf_area_index_low_vegetation	lai_lv	66			X
Lifting threshold speed	m s^-1	lifting_threshold_speed	aerlts	210053			X
Low cloud cover	(0 - 1)	low_cloud_cover	lcc	186			X
Mean sea level pressure	Pa	mean_sea_level_pressure	msl	151	Fast access		X
Medium cloud cover	(0 - 1)	medium_cloud_cover	mcc	187			X
Nitrate aerosol optical depth at 550 nm	dimensionless	nitrate_aerosol_optical_depth_550nm	niaod550	210250	Fast access		X	Only available from 9 July 2019 00UTC
Coarse-mode nitrate aerosol optical depth at 550 nm	dimensionless	nitrate_coarse_mode_aerosol_optical_depth_550nm	aerodnic	215204			X	Only available from 9 July 2019 00UTC
Fine-mode nitrate aerosol optical depth at 550 nm	dimensionless	nitrate_fine_mode_aerosol_optical_depth_550nm	aerodnif	215203			X	Only available from 9 July 2019 00UTC
Organic Matter Aerosol Optical Depth at 550nm	dimensionless	organic_matter_aerosol_optical_depth_550nm	omaod550	210210	Fast access		X
Particulate matter d < 10 um	kg m^-3	particulate_matter_10um	pm10	210074	Fast access		X	PM10 and PM25 global products
Particulate matter d < 2.5 um	kg m^-3	particulate_matter_2.5um	pm2p5	210073	Fast access		X	PM10 and PM25 global products
Particulate matter d < 1 um	kg m^-3	particulate_matter_1um	pm1	210072	Fast access		X
Photosynthetically active radiation at the surface	J m^-2	photosynthetically_active_radiation_at_the_surface	par	58		X	X
Potential evaporation	m	potential_evaporation	pev	228251		X	X	Only available from 21 June 2016 00UTC
Precipitation type	code table (4.201)	precipitation_type	ptype	260015		X	X	Only available from 21 June 2016 00UTC
Sea ice area fraction	(0 - 1)	sea_ice_cover	ci	31			X
Sea salt aerosol (0.03 - 0.5 um) optical depth	dimensionless	sea_salt_aerosol_0.03-0.5um_optical_depth_550nm	aerodsss	215022			X	Only available from 26 June 2018 12UTC
Sea salt aerosol (0.5 - 5 um) optical depth	dimensionless	sea_salt_aerosol_0.5-5um_optical_depth_550nm	aerodssm	215023			X	Only available from 26 June 2018 12UTC
Sea salt aerosol (5 - 20 um) optical depth	dimensionless	sea_salt_aerosol_5-20um_optical_depth_550nm	aerodssl	215024			X	Only available from 26 June 2018 12UTC
Sea Salt Aerosol Optical Depth at 550nm	dimensionless	sea_salt_aerosol_optical_depth_550nm	ssaod550	210208	Fast access		X	Only available from 26 June 2018 12UTC
Sea surface temperature	K	sea_surface_temperature	sst	34			X
Sedimentation of ammonium aerosol	kg m^-2 s^-1	sedimentation_of_ammonium_aerosol	aersdmam	215207		X	X	Only available from 9 July 2019 00UTC
Sedimentation of coarse-mode nitrate aerosol	kg m^-2 s^-1	sedimentation_of_coarse_mode_nitrate_aerosol	aersdmnic	215194		X	X	Only available from 9 July 2019 00UTC
Sedimentation of dust aerosol (0.03 - 0.55 um)	kg m^-2 s^-1	sedimentation_of_dust_aerosol_0.03-0.55um	aersdmdus	215031		X	X	Only available from 26 June 2018 12UTC
Sedimentation of dust aerosol (0.55 - 9 um)	kg m^-2 s^-1	sedimentation_of_dust_aerosol_0.55-9um	aersdmdum	215032		X	X	Only available from 26 June 2018 12UTC
Sedimentation of dust aerosol (9 - 20 um)	kg m^-2 s^-1	sedimentation_of_dust_aerosol_9-20um	aersdmdul	215033		X	X	Only available from 26 June 2018 12UTC
Sedimentation of fine-mode nitrate aerosol	kg m^-2 s^-1	sedimentation_of_fine_mode_nitrate_aerosol	aersdmnif	215193		X	X	Only available from

26 June 2018 12UTC

9 July 2019 00UTC
Sedimentation of hydrophilic black carbon aerosol	kg m^-2 s^-1	sedimentation_of_hydrophilic_black_carbon_aerosol	aersdmbchphil	215070		X	X	Only available from 26 June 2018 12UTC
Sedimentation of hydrophilic organic matter aerosol	kg m^-2 s^-1	sedimentation_of_hydrophilic_organic_matter_aerosol	aersdmomhphil	215054		X	X	Only available from 26 June 2018 12UTC
Sedimentation of hydrophobic black carbon aerosol	kg m^-2 s^-1	sedimentation_of_hydrophobic_black_carbon_aerosol	aersdmbchphob	215069		X	X	Only available from 26 June 2018 12UTC
Sedimentation of hydrophobic organic matter aerosol	kg m^-2 s^-1	sedimentation_of_hydrophobic_organic_matter_aerosol	aersdmomhphob	215053		X	X	Only available from 26 June 2018 12UTC
Sedimentation of sea salt aerosol (0.03 - 0.5 um)	kg m^-2 s^-1	sedimentation_of_sea_salt_aerosol_0.03-0.5um	aersdmsss	215007		X	X	Only available from 26 June 2018 12UTC
Sedimentation of sea salt aerosol (0.5 - 5 um)	kg m^-2 s^-1	sedimentation_of_sea_salt_aerosol_0.5-5um	aersdmssm	215008		X	X	Only available from 26 June 2018 12UTC
Sedimentation of sea salt aerosol (5 - 20 um)	kg m^-2 s^-1	sedimentation_of_sea_salt_aerosol_5-20um	aersdmssl	215009		X	X	Only available from 26 June 2018 12UTC
Sedimentation of sulphate aerosol	kg m^-2 s^-1	sedimentation_of_sulphate_aerosol	aersdmsu	215083		X	X	Only available from 26 June 2018 12UTC
Single scattering albedo at 1020 nm	(0 - 1)	single_scattering_albedo_1020nm	ssa1020	215146			X	Only available from 26 June 2018 12UTC
Single scattering albedo at 1064 nm	(0 - 1)	single_scattering_albedo_1064nm	ssa1064	215147			X	Only available from 26 June 2018 12UTC
Single scattering albedo at 1240 nm	(0 - 1)	single_scattering_albedo_1240nm	ssa1240	215148			X	Only available from 26 June 2018 12UTC
Single scattering albedo at 1640 nm	(0 - 1)	single_scattering_albedo_1640nm	ssa1640	215149			X	Only available from 26 June 2018 12UTC
Single scattering albedo at 2130 nm	(0 - 1)	single_scattering_albedo_2130nm	ssa2130	215178			X	Only available from 26 June 2018 12UTC
Single scattering albedo at 340 nm	(0 - 1)	single_scattering_albedo_340nm	ssa340	215132			X	Only available from 26 June 2018 12UTC
Single scattering albedo at 355 nm	(0 - 1)	single_scattering_albedo_355nm	ssa355	215133			X	Only available from 26 June 2018 12UTC
Single scattering albedo at 380 nm	(0 - 1)	single_scattering_albedo_380nm	ssa380	215134			X	Only available from 26 June 2018 12UTC
Single scattering albedo at 400 nm	(0 - 1)	single_scattering_albedo_400nm	ssa400	215135			X	Only available from 26 June 2018 12UTC
Single scattering albedo at 440 nm	(0 - 1)	single_scattering_albedo_440nm	ssa440	215136			X	Only available from 26 June 2018 12UTC
Single scattering albedo at 469 nm	(0 - 1)	single_scattering_albedo_469nm	ssa469	215137			X	Only available from 26 June 2018 12UTC
Single scattering albedo at 500 nm	(0 - 1)	single_scattering_albedo_500nm	ssa500	215138			X	Only available from 26 June 2018 12UTC
Single scattering albedo at 532 nm	(0 - 1)	single_scattering_albedo_532nm	ssa532	215139			X	Only available from 26 June 2018 12UTC
Single scattering albedo at 550 nm	(0 - 1)	single_scattering_albedo_550nm	ssa550	215140			X	Only available from 26 June 2018 12UTC
Single scattering albedo at 645 nm	(0 - 1)	single_scattering_albedo_645nm	ssa645	215141			X	Only available from 26 June 2018 12UTC
Single scattering albedo at 670 nm	(0 - 1)	single_scattering_albedo_670nm	ssa670	215142			X	Only available from 26 June 2018 12UTC
Single scattering albedo at 800 nm	(0 - 1)	single_scattering_albedo_800nm	ssa800	215143			X	Only available from 26 June 2018 12UTC
Single scattering albedo at 858 nm	(0 - 1)	single_scattering_albedo_858nm	ssa858	215144			X	Only available from 26 June 2018 12UTC
Single scattering albedo at 865 nm	(0 - 1)	single_scattering_albedo_865nm	ssa865	215145			X	Only available from 26 June 2018 12UTC
Skin reservoir content	m of water equivalent	skin_reservoir_content	src	198			X
Skin temperature	K	skin_temperature	skt	235			X
Snow albedo	(0 - 1)	snow_albedo	asn	32			X
Snow depth	m of water equivalent	snow_depth	sd	141			X
Soil clay content	%	soil_clay_content	aerscc	210054			X
Sulphate Aerosol Optical Depth at 550nm	dimensionless	sulphate_aerosol_optical_depth_550nm	suaod550	210212			X
Sunshine duration	s	sunshine_duration	sund	189		X	X
Surface geopotential	m² s^-2	surface_geopotential	z	129	Fast access		X
Surface latent heat flux	J m^-2	surface_latent_heat_flux	slhf	147		X	X
Surface net solar radiation	J m^-2	surface_net_solar_radiation	ssr	176		X	X
Surface net solar radiation, clear sky	J m^-2	surface_net_solar_radiation_clear_sky	ssrc	210

Surface

	X	X
Surface net thermal radiation	J m^-2	surface_net_thermal_radiation	str	177		X	X
Surface net thermal radiation, clear sky	J m^-2	surface_net_thermal_radiation_clear_sky	strc	211		X	X
Surface pressure	Pa	surface_pressure	sp	134	Fast access	X	X	Only available from

22

21 June 2016 00UTC
Surface sensible heat flux	J m^-2	surface_sensible_heat_flux	sshf	146		X	X
Surface solar radiation downward clear-sky	J m-2	surface_solar_radiation_downward_clear_sky	ssrdc	228129		X	X
Surface solar radiation downwards	J m^-2	surface_solar_radiation_downwards	ssrd	169		X	X
Surface thermal radiation downward clear-sky	J m^-2	surface_thermal_radiation_downward_clear_sky	strdc	228130		X	X
Surface thermal radiation downwards	J m^-2	surface_thermal_radiation_downwards	strd	175		X	X
TOA incident solar radiation	J m^-2	toa_incident_solar_radiation	tisr	212		X	X
Top net solar radiation	J m^-2	top_net_solar_radiation	tsr	178		X	X
Top net solar radiation, clear sky	J m^-2	top_net_solar_radiation_clear_sky	tsrc	208		X	X
Top net thermal radiation	J m^-2	top_net_thermal_radiation	ttr	179		X	X
Top net thermal radiation, clear sky	J m^-2	top_net_thermal_radiation_clear_sky	ttrc	209		X	X
Total absorption aerosol optical depth at 1020 nm	dimensionless	total_absorption_aerosol_optical_depth_1020nm	aodabs1020	215110			X	Only available from 26 June 2018 12UTC
Total absorption aerosol optical depth at 1064 nm	dimensionless	total_absorption_aerosol_optical_depth_1064nm	aodabs1064	215111			X	Only available from 26 June 2018 12UTC
Total absorption aerosol optical depth at 1240 nm	dimensionless	total_absorption_aerosol_optical_depth_1240nm	aodabs1240	215112			X	Only available from 26 June 2018 12UTC
Total absorption aerosol optical depth at 1640 nm	dimensionless	total_absorption_aerosol_optical_depth_1640nm	aodabs1640	215113			X	Only available from 26 June 2018 12UTC
Total absorption aerosol optical depth at 2130 nm	dimensionless	total_absorption_aerosol_optical_depth_2130nm	aodabs2130	215176			X	Only available from 26 June 2018 12UTC
Total absorption aerosol optical depth at 340 nm	dimensionless	total_absorption_aerosol_optical_depth_340nm	aodabs340	215096			X	Only available from 26 June 2018 12UTC
Total absorption aerosol optical depth at 355 nm	dimensionless	total_absorption_aerosol_optical_depth_355nm	aodabs355	215097			X	Only available from 26 June 2018 12UTC
Total absorption aerosol optical depth at 380 nm	dimensionless	total_absorption_aerosol_optical_depth_380nm	aodabs380	215098			X	Only available from 26 June 2018 12UTC
Total absorption aerosol optical depth at 400 nm	dimensionless	total_absorption_aerosol_optical_depth_400nm	aodabs400	215099			X	Only available from 26 June 2018 12UTC
Total absorption aerosol optical depth at 440 nm	dimensionless	total_absorption_aerosol_optical_depth_440nm	aodabs440	215100			X	Only available from 26 June 2018 12UTC
Total absorption aerosol optical depth at 469 nm	dimensionless	total_absorption_aerosol_optical_depth_469nm	aodabs469	215101			X	Only available from 26 June 2018 12UTC
Total absorption aerosol optical depth at 500 nm	dimensionless	total_absorption_aerosol_optical_depth_500nm	aodabs500	215102			X	Only available from 26 June 2018 12UTC
Total absorption aerosol optical depth at 532 nm	dimensionless	total_absorption_aerosol_optical_depth_532nm	aodabs532	215103			X	Only available from 26 June 2018 12UTC
Total absorption aerosol optical depth at 550 nm	dimensionless	total_absorption_aerosol_optical_depth_550nm	aodabs550	215104			X	Only available from 26 June 2018 12UTC
Total absorption aerosol optical depth at 645 nm	dimensionless	total_absorption_aerosol_optical_depth_645nm	aodabs645	215105			X	Only available from 26 June 2018 12UTC
Total absorption aerosol optical depth at 670 nm	dimensionless	total_absorption_aerosol_optical_depth_670nm	aodabs670	215106			X	Only available from 26 June 2018 12UTC
Total absorption aerosol optical depth at 800 nm	dimensionless	total_absorption_aerosol_optical_depth_800nm	aodabs800	215107			X	Only available from 26 June 2018 12UTC
Total absorption aerosol optical depth at 858 nm	dimensionless	total_absorption_aerosol_optical_depth_858nm	aodabs858	215108			X	Only available from 26 June 2018 12UTC
Total absorption aerosol optical depth at 865 nm	dimensionless	total_absorption_aerosol_optical_depth_865nm	aodabs865	215109			X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 1020 nm	dimensionless	total_aerosol_optical_depth_1020nm	aod1020	210227			X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 1064 nm	dimensionless	total_aerosol_optical_depth_1064nm	aod1064	210228			X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 1240nm	dimensionless	total_aerosol_optical_depth_1240nm	aod1240	210216	Fast access		X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 1640 nm	dimensionless	total_aerosol_optical_depth_1640nm	aod1640	210229			X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 2130 nm	dimensionless	total_aerosol_optical_depth_2130nm	aod2130	210230			X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 340 nm	dimensionless	total_aerosol_optical_depth_340nm	aod340	210217			X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 355 nm	dimensionless	total_aerosol_optical_depth_355nm	aod355	210218			X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 380 nm	dimensionless	total_aerosol_optical_depth_380nm	aod380	210219			X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 400 nm	dimensionless	total_aerosol_optical_depth_400nm	aod400	210220			X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 440 nm	dimensionless	total_aerosol_optical_depth_440nm	aod440	210221			X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 469nm	dimensionless	total_aerosol_optical_depth_469nm	aod469	210213	Fast access		X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 500 nm	dimensionless	total_aerosol_optical_depth_500nm	aod500	210222			X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 532 nm	dimensionless	total_aerosol_optical_depth_532nm	aod532	210223			X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 550nm	dimensionless	total_aerosol_optical_depth_550nm	aod550	210207	Fast access		X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 645 nm	dimensionless	total_aerosol_optical_depth_645nm	aod645	210224			X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 670nm	dimensionless	total_aerosol_optical_depth_670nm	aod670	210214	Fast access		X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 800 nm	dimensionless	total_aerosol_optical_depth_800nm	aod800	210225			X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 858 nm	dimensionless	total_aerosol_optical_depth_858nm	aod858	210226			X	Only available from 26 June 2018 12UTC
Total aerosol optical depth at 865nm	dimensionless	total_aerosol_optical_depth_865nm	aod865	210215	Fast access		X	Only available from 26 June 2018 12UTC
Total cloud cover	(0 - 1)	total_cloud_cover	tcc	164			X
Total column acetone	kg m^-2	total_column_acetone	tc_ch3coch3	218052

Total

			X	Only available from 26 June 2018 12UTC
Total column acetone product	kg m^-2	total_column_acetone_product	tc_aco2	218053		X	Only available from 06 October 2020 00UTC
Total column aldehydes	kg m^-2	total_column_aldehydes	tc_ald2	218012		X	Only available from 26 June 2018 12UTC
Total column amine	kg m^-2	total_column_amine	tc_nh2	218040		X	Only available from 06 October 2020 00UTC
Total column ammonia	kg m^-2	total_column_ammonia	tc_nh3	218019		X	Only available from 06 October 2020 00UTC
Total column ammonium	kg m^-2	total_column_ammonium	tc_nh4	218021		X	Only available from 9 July 2019 00UTC
Total column Carbon monoxide	kg m^-2	total_column_carbon_monoxide	tcco	210127	Fast access	X
Total column cloud ice water	kg m^-2	total_column_cloud_ice_water	tciw	79		X
Total column cloud liquid water	kg m^-2	total_column_cloud_liquid_water	tclw	78		X
Total column dimethyl sulfide	kg m^-2	total_column_dimethyl_sulfide	tc_dms	218018		X	Only available from 06 October 2020 00UTC
Total column dinitrogen pentoxide	kg m^-2	total_column_dinitrogen_pentoxide	tc_n2o5	218033		X	Only available from 06 October 2020 00UTC
Total column ethane	kg m^-2	total_column_ethane	tc_c2h6	218045	Fast access	X
Total column ethanol	kg m^-2	total_column_ethanol	tc_c2h5oh	218046		X	Only available from 26 June 2018 12UTC
Total column ethene	kg m^-2	total_column_ethene	tc_c2h4	218010		X	Only available from 26 June 2018 12UTC
Total column Formaldehyde	kg m^-2	total_column_formaldehyde	tchcho	210128	Fast access	X
Total column formic acid	kg m^-2	total_column_formic_acid	tc_hcooh	218043		X	Only available from 26 June 2018 12UTC
Total column hydrogen peroxide	kg m^-2	total_column_hydrogen_peroxide	tc_h2o2	218003	Fast access	X	Only available from 26 June 2018 12UTC
Total column hydroperoxy radical	kg m^-2	total_column_hydroperoxy_radical	tc_ho2	218028		X	Only available from 20 June 2017 00UTC
Total column hydroxyl radical	kg m^-2	total_column_hydroxyl_radical	tc_oh	218030	Fast access	X
Total column HYPROPO2	kg m^-2	total_column_hypropo2	tc_hypropo2	218055		X	Only available from 06 October 2020 00UTC
Total column IC3H7O2	kg m^-2	total_column_ic3h7o2	tc_ic3h7o2	218054		X	Only available from 06 October 2020 00UTC
Total column isoprene	kg m^-2	total_column_isoprene	tc_c5h8	218016	Fast access	X
Total column lead	kg m^-2	total_column_lead	tc_pb	218026		X	Only available from 06 October 2020 00UTC
Total column methacrolein MVK	kg m^-2	total_column_methacrolein_mvk	tc_ispd	218050		X	Only available from 06 October 2020 00UTC
Total column methacrylic acid	kg m^-2	total_column_methacrylic_acid	tc_mcooh	218044		X	Only available from 06 October 2020 00UTC
Total column methane	kg m^-2	total_column_methane	tc_ch4	218004	Fast access	X
Total column methane sulfonic acid	kg m^-2	total_column_methane_sulfonic_acid	tc_msa	218022		X	Only available from 06 October 2020 00UTC
Total column methanol	kg m^-2	total_column_methanol	tc_ch3oh	218042		X	Only available from 26 June 2018 12UTC
Total column methyl glyoxal	kg m^-2	total_column_methyl_glyoxal	tc_ch3cocho	218023		X	Only available from 06 October 2020 00UTC
Total column methyl peroxide	kg m^-2	total_column_methyl_peroxide	tc_ch3ooh	218007		X	Only available from 26 June 2018 12UTC
Total column methylperoxy radical	kg m^-2	total_column_methylperoxy_radical	tc_ch3o2	218029		X	Only available from 06 October 2020 00UTC
Total column nitrate	kg m^-2	total_column_nitrate	tc_no3_a	218051		X	Only available from 06 October 2020 00UTC
Total column nitrate radical	kg m^-2	total_column_nitrate_radical	tc_no3	218032		X	Only available from 06 October 2020 00UTC
Total column nitric acid	kg m^-2	total_column_nitric_acid	tc_hno3	218006	Fast access	X
Total column Nitrogen dioxide	kg m^-2	total_column_nitrogen_dioxide	tcno2	210125	Fast access	X
Total column nitrogen monoxide	kg m^-2	total_column_nitrogen_monoxide	tc_no	218027	Fast access	X
Total column nitrogen oxides Transp	kg m^-2	total_column_nitrogen_oxides_transp	tc_noxa	218056

Total column NO

			X	Only available from 06 October 2020 00UTC
Total column NO to alkyl nitrate operator	kg m^-2	total_column_no_to_alkyl_nitrate_operator	tc_xo2n	218039		X	Only available from 06 October 2020 00UTC
Total column NO to NO2 operator	kg m^-2	total_column_no_to_no2_operator	tc_xo2	218038		X	Only available from 06 October 2020 00UTC
Total column olefins	kg m^-2	total_column_olefins	tc_ole	218011		X	Only available from 26 June 2018 12UTC
Total column organic ethers	kg m^-2	total_column_organic_ethers	tc_ror	218036		X	Only available from 06 October 2020 00UTC
Total column organic nitrates	kg m-²	total_column_organic_nitrates	tc_onit	218015		X	Only available from 26 June 2018 12UTC
GEMS Total column ozone	kg m^-2	total_column_ozone	gtco3	210206	Fast access	X
Total column PAR budget corrector	kg m^-2	total_column_par_budget_corrector	tc_rxpar	218037		X
Total column paraffins	kg m^-2	total_column_paraffins	tc_par	218009		X	Only available from 26 June 2018 12UTC
Total column pernitric acid	kg m^-2	total_column_pernitric_acid	tc_ho2no2	218034		X	Only available from 06 October 2020 00UTC
Total column peroxides	kg m^-2	total_column_peroxides	tc_rooh	218014		X	Only available from 06 October 2020 00UTC
Total column peroxy acetyl radical	kg m^-2	total_column_peroxy_acetyl_radical	tc_c2o3	218035		X	Only available from 06 October 2020 00UTC
Total column peroxyacetyl nitrate	kg m^-2	total_column_peroxyacetyl_nitrate	tc_pan	218013	Fast access	X
Total column polar stratospheric cloud	kg m^-2	total_column_polar_stratospheric_cloud	tc_psc	218041		X	Only available from 06 October 2020 00UTC
Total column propane	kg m^-2	total_column_propane	tc_c3h8	218047	Fast access	X
Total column propene	kg m^-2	total_column_propene	tc_c3h6	218048		X	Only available from 06 October 2020 00UTC
Total column Radon	kg m^-2	total_column_radon	tcra	210183		X	Only available from 06 October 2020 00UTC
Total column rain water	kg m^-2	total_column_rain_water	tcrw

228089

	228089			X	Only available from 21 June 2016 00UTC
Total column snow water	kg m^-2	total_column_snow_water	tcsw	228090			X	Only available from 21 June 2016 00UTC
Source/gain of ammonium aerosol	kg m^-2 s^-1	total_column_source_of_ammonium_aerosol	aersrcam	215205		X	X	Only available from 9 July 2019 00UTC
Source/gain of coarse-mode nitrate aerosol	kg m^-2 s^-1	total_column_source_of_coarse_mode_nitrate_aerosol	aersrcnic	215190		X	X	Only available from 9 July 2019 00UTC
Source/gain of dust aerosol (0.03 - 0.55 um)	kg m^-2 s^-1	total_column_source_of_dust_aerosol_0.03-0.55um	aersrcdus	215025		X	X	Only available from 26 June 2018 12UTC
Source/gain of dust aerosol (0.55 - 9 um)	kg m^-2 s^-1	total_column_source_of_dust_aerosol_0.55-9um	aersrcdum	215026		X	X	Only available from 26 June 2018 12UTC
Source/gain of dust aerosol (9 - 20 um)	kg m^-2 s^-1	total_column_source_of_dust_aerosol_9-20um	aersrcdul	215027		X	X	Only available from 26 June 2018 12UTC
Source/gain of fine-mode nitrate aerosol	kg m^-2 s^-1	total_column_source_of_fine_mode_nitrate_aerosol	aersrcnif	215189		X	X	Only available from 26 June 2018 12UTC
Source/gain of hydrophilic black carbon aerosol	kg m^-2 s^-1	total_column_source_of_hydrophilic_black_carbon_aerosol	aersrcbchphil	215066		X	X	Only available from 26 June 2018 12UTC
Source/gain of hydrophilic organic matter aerosol	kg m^-2 s^-1	total_column_source_of_hydrophilic_organic_matter_aerosol	aersrcomhphil	215050		X	X	Only available from 26 June 2018 12UTC
Source/gain of hydrophobic black carbon aerosol	kg m^-2 s^-1	total_column_source_of_hydrophobic_black_carbon_aerosol	aersrcbchphob	215065		X	X	Only available from 26 June 2018 12UTC
Source/gain of hydrophobic organic matter aerosol	kg m^-2 s^-1	total_column_source_of_hydrophobic_organic_matter_aerosol	aersrcomhphob	215049		X	X	Only available from 26 June 2018 12UTC
Source/gain of sea salt aerosol (0.03 - 0.5 um)	kg m^-2 s^-1	total_column_source_of_sea_salt_aerosol_0.03-0.5um	aersrcsss	215001		X	X	Only available from 26 June 2018 12UTC
Source/gain of sea salt aerosol (0.5 - 5 um)	kg m^-2 s^-1	total_column_source_of_sea_salt_aerosol_0.5-5um	aersrcssm	215002		X	X	Only available from 26 June 2018 12UTC
Source/gain of sea salt aerosol (5 - 20 um)	kg m^-2 s^-1	total_column_source_of_sea_salt_aerosol_5-20um	aersrcssl	215003		X	X	Only available from 26 June 2018 12UTC
Source/gain of sulphate aerosol	kg m^-2 s^-1	total_column_source_of_sulphate_aerosol	aersrcsu	215081		X	X	Only available from 26 June 2018 12UTC
Total column stratospheric ozone	kg m^-2	total_column_stratospheric_ozone	tc_o3s	218024			X	Only available from

26

20 June

2018 12UTC

2017 00UTC
Total column Sulphur dioxide	kg m^-2	total_column_sulphur_dioxide	tcso2	210126	Fast access		X
Total column supercooled liquid water	kg m^-2	total_column_supercooled_liquid_water	tcslw	228088			X	Only available from 21 June 2016 00UTC
Total column terpenes	kg m^-2	total_column_terpenes	tc_c10h16	218049			X	Only available from 06 October 2020 00UTC
Total column water	kg m^-2	total_column_water	tcw	136			X
Total column water vapour	kg m^-2	total_column_water_vapour	tcwv	137	Fast access		X
Total fine mode (r < 0.5 um) aerosol optical depth at 1020 nm	dimensionless	total_fine_mode_aerosol_optical_depth_1020nm	aodfm1020	215128			X	Only available from 26 June 2018 12UTC
Total fine mode (r < 0.5 um) aerosol optical depth at 1064 nm	dimensionless	total_fine_mode_aerosol_optical_depth_1064nm	aodfm1064	215129			X	Only available from 26 June 2018 12UTC
Total fine mode (r < 0.5 um) aerosol optical depth at 1240 nm	dimensionless	total_fine_mode_aerosol_optical_depth_1240nm	aodfm1240	215130			X	Only available from 26 June 2018 12UTC
Total fine mode (r < 0.5 um) aerosol optical depth at 1640 nm	dimensionless	total_fine_mode_aerosol_optical_depth_1640nm	aodfm1640	215131			X	Only available from 26 June 2018 12UTC
Total fine mode (r < 0.5 um) aerosol optical depth at 2130 nm	dimensionless	total_fine_mode_aerosol_optical_depth_2130nm	aodfm2130	215177			X	Only available from 26 June 2018 12UTC
Total fine mode (r < 0.5 um) aerosol optical depth at 340 nm	dimensionless	total_fine_mode_aerosol_optical_depth_340nm	aodfm340	215114			X	Only available from 26 June 2018 12UTC
Total fine mode (r < 0.5 um) aerosol optical depth at 355 nm	dimensionless	total_fine_mode_aerosol_optical_depth_355nm	aodfm355	215115			X	Only available from 26 June 2018 12UTC
Total fine mode (r < 0.5 um) aerosol optical depth at 380 nm	dimensionless	total_fine_mode_aerosol_optical_depth_380nm	aodfm380	215116			X	Only available from 26 June 2018 12UTC
Total fine mode (r < 0.5 um) aerosol optical depth at 400 nm	dimensionless	total_fine_mode_aerosol_optical_depth_400nm	aodfm400	215117			X	Only available from 26 June 2018 12UTC
Total fine mode (r < 0.5 um) aerosol optical depth at 440 nm	dimensionless	total_fine_mode_aerosol_optical_depth_440nm	aodfm440	215118			X	Only available from 26 June 2018 12UTC
Total fine mode (r < 0.5 um) aerosol optical depth at 469 nm	dimensionless	total_fine_mode_aerosol_optical_depth_469nm	aodfm469	215119			X	Only available from 26 June 2018 12UTC
Total fine mode (r < 0.5 um) aerosol optical depth at 500 nm	dimensionless	total_fine_mode_aerosol_optical_depth_500nm	aodfm500	215120			X	Only available from 26 June 2018 12UTC
Total fine mode (r < 0.5 um) aerosol optical depth at 532 nm	dimensionless	total_fine_mode_aerosol_optical_depth_532nm	aodfm532	215121			X	Only available from 26 June 2018 12UTC
Total fine mode (r < 0.5 um) aerosol optical depth at 550 nm	dimensionless	total_fine_mode_aerosol_optical_depth_550nm	aodfm550	215122			X	Only available from 26 June 2018 12UTC
Total fine mode (r < 0.5 um) aerosol optical depth at 645 nm	dimensionless	total_fine_mode_aerosol_optical_depth_645nm	aodfm645	215123			X	Only available from 26 June 2018 12UTC
Total fine mode (r < 0.5 um) aerosol optical depth at 670 nm	dimensionless	total_fine_mode_aerosol_optical_depth_670nm	aodfm670	215124			X	Only available from 26 June 2018 12UTC
Total fine mode (r < 0.5 um) aerosol optical depth at 800 nm	dimensionless	total_fine_mode_aerosol_optical_depth_800nm	aodfm800	215125			X	Only available from 26 June 2018 12UTC
Total fine mode (r < 0.5 um) aerosol optical depth at 858 nm	dimensionless	total_fine_mode_aerosol_optical_depth_858nm	aodfm858	215126			X	Only available from 26 June 2018 12UTC
Total fine mode (r < 0.5 um) aerosol optical depth at 865 nm	dimensionless	total_fine_mode_aerosol_optical_depth_865nm	aodfm865	215127			X	Only available from 26 June 2018 12UTC
Total precipitation	m	total_precipitation	tp	228			X
Total sky direct solar radiation at surface	J m^-2	total_sky_direct_solar_radiation_at_surface	fdir	228021		X	X
UV biologically effective dose	dimensionless	uv_biologically_effective_dose	uvbed	214002	Fast access		X	Only available from 03 September 2015 00UTC
UV biologically effective dose clear-sky	dimensionless	uv_biologically_effective_dose_clear_sky	uvbedcs	214003	Fast access		X	Only available from 03 September 2015 00UTC
Vertically integrated mass of ammonium aerosol	kg m^-2	vertically_integrated_mass_of_ammonium_aerosol	aermssam	215211			X	Only available from 9 July 2019 00UTC
Vertically integrated mass of coarse-mode nitrate aerosol	kg m^-2	vertically_integrated_mass_of_coarse_mode_nitrate_aerosol	aermssnic	215202			X	Only available from 9 July 2019 00UTC
Vertically integrated mass of dust aerosol (0.03 - 0.55 um)	kg m^-2	vertically_integrated_mass_of_dust_aerosol_0.03-0.55um	aermssdus	215043			X	Only available from 26 September 2017 00UTC
Vertically integrated mass of dust aerosol (0.55 - 9 um)	kg m^-2	vertically_integrated_mass_of_dust_aerosol_0.55-9um	aermssdum	215044			X	Only available from 26 September 2017 00UTC
Vertically integrated mass of dust aerosol (9 - 20 um)	kg m^-2	vertically_integrated_mass_of_dust_aerosol_9-20um	aermssdul	215045			X	Only available from 26 September 2017 00UTC
Vertically integrated mass of fine-mode nitrate aerosol	kg m^-2	vertically_integrated_mass_of_fine_mode_nitrate_aerosol	aermssnif	215201			X	Only available from 9 July 2019 00UTC
Vertically integrated mass of hydrophilic black carbon aerosol	kg m^-2	vertically_integrated_mass_of_hydrophilic_black_carbon_aerosol	aermssbchphil	215078			X	Only available from 26 September 2017 00UTC
Vertically integrated mass of hydrophilic organic matter aerosol	kg m^-2	vertically_integrated_mass_of_hydrophilic_organic_matter_aerosol	aermssomhphil	215062			X	Only available from 26 September 2017 00UTC
Vertically integrated mass of hydrophobic black carbon aerosol	kg m^-2	vertically_integrated_mass_of_hydrophobic_black_carbon_aerosol	aermssbchphob	215077			X	Only available from 26 September 2017 00UTC
Vertically integrated mass of hydrophobic organic matter aerosol	kg m^-2	vertically_integrated_mass_of_hydrophobic_organic_matter_aerosol	aermssomhphob	215061			X	Only available from 26 September 2017 00UTC
Vertically integrated mass of sea salt aerosol (0.03 - 0.5 um)	kg m^-2	vertically_integrated_mass_of_sea_salt_aerosol_0.03-0.5um	aermsssss

215019

	215019			X	Only available from 26 September 2017 00UTC
Vertically integrated mass of sea salt aerosol (0.5 - 5 um)	kg m^-2	vertically_integrated_mass_of_sea_salt_aerosol_0.5-5um	aermssssm	215020			X	Only available from 26 September 2017 00UTC
Vertically integrated mass of sea salt aerosol (5 - 20 um)	kg m^-2	vertically_integrated_mass_of_sea_salt_aerosol_5-20um	aermssssl	215021			X	Only available from 26 September 2017 00UTC
Vertically integrated mass of sulphate aerosol	kg m^-2	vertically_integrated_mass_of_sulphate_aerosol	aermsssu	215087			X	Only available from 26 September 2017 00UTC
Vertically integrated moisture divergence	kg m^-2	vertically_integrated_moisture_divergence	vimd	213		X	X	Only available from 21 June 2016 00UTC
Visibility	m	visibility	vis	3020			X	Only available from 21 June 2016 00UTC
Wet deposition of ammonium aerosol by convective precipitation	kg m^-2 s^-1	wet_deposition_of_ammonium_aerosol_by_convective_precipitation	aerwdcam	215209		X	X	Only available from 9 July 2019 00UTC
Wet deposition of ammonium aerosol by large-scale precipitation	kg m^-2 s^-1	wet_deposition_of_ammonium_aerosol_by_large_scale_precipitation	aerwdlam	215208		X	X	Only available from 9 July 2019 00UTC
Wet deposition of coarse-mode nitrate aerosol by convective precipitation	kg m^-2 s^-1	wet_deposition_of_coarse_mode_nitrate_aerosol_by_convective_precipitation	aerwdcnic	215198		X	X	Only available from 9 July 2019 00UTC
Wet deposition of coarse-mode nitrate aerosol by large-scale precipitation	kg m^-2 s^-1	wet_deposition_of_coarse_mode_nitrate_aerosol_by_large_scale_precipitation	aerwdlnic	215196		X	X	Only available from 9 July 2019 00UTC
Wet deposition of dust aerosol (0.03 - 0.55 um) by convective precipitation	kg m^-2 s^-1	wet_deposition_of_dust_aerosol_0.03-0.55um_by_convective_precipitation	aerwdccdus	215037		X	X	Only available from 26 June 2018 12UTC
Wet deposition of dust aerosol (0.03 - 0.55 um) by large-scale precipitation	kg m^-2 s^-1	wet_deposition_of_dust_aerosol_0.03-0.55um_by_large_scale_precipitation	aerwdlsdus	215034		X	X	Only available from 26 June 2018 12UTC
Wet deposition of dust aerosol (0.55 - 9 um) by convective precipitation	kg m^-2 s^-1	wet_deposition_of_dust_aerosol_0.55-9um_by_convective_precipitation	aerwdccdum	215038		X	X	Only available from 26 June 2018 12UTC
Wet deposition of dust aerosol (0.55 - 9 um) by large-scale precipitation	kg m^-2 s^-1	wet_deposition_of_dust_aerosol_0.55-9um_by_large_scale_precipitation	aerwdlsdum	215035		X	X	Only available from 26 June 2018 12UTC
Wet deposition of dust aerosol (9 - 20 um) by convective precipitation	kg m^-2 s^-1	wet_deposition_of_dust_aerosol_9-20um_by_convective_precipitation	aerwdccdul	215039		X	X	Only available from 26 June 2018 12UTC
Wet deposition of dust aerosol (9 - 20 um) by large-scale precipitation	kg m-2 s-1	wet_deposition_of_dust_aerosol_9-20um_by_large_scale_precipitation	aerwdlsdul	215036		X	X	Only available from 26 June 2018 12UTC
Wet deposition of fine-mode nitrate aerosol by convective precipitation	kg m-2 s-1	wet_deposition_of_fine_mode_nitrate_aerosol_by_convective_precipitation	aerwdcnif	215197		X	X	Only available from 26 June 2018 12UTC
Wet deposition of fine-mode nitrate aerosol by large-scale precipitation	kg m-2 s-1	wet_deposition_of_fine_mode_nitrate_aerosol_by_large_scale_precipitation	aerwdlnif	215195		X	X	Only available from 26 June 2018 12UTC
Wet deposition of hydrophilic black carbon aerosol by convective precipitation	kg m-2 s-1	wet_deposition_of_hydrophilic_black_carbon_aerosol_by_convective_precipitation	aerwdccbchphil	215074		X	X	Only available from 26 June 2018 12UTC
Wet deposition of hydrophilic black carbon aerosol by large-scale precipitation	kg m-2 s-1	wet_deposition_of_hydrophilic_black_carbon_aerosol_by_large_scale_precipitation	aerwdlsbchphil	215072		X	X	Only available from 26 June 2018 12UTC
Wet deposition of hydrophilic organic matter aerosol by convective precipitation	kg m-2 s-1	wet_deposition_of_hydrophilic_organic_matter_aerosol_by_convective_precipitation	aerwdccomhphil	215058		X	X	Only available from 26 June 2018 12UTC
Wet deposition of hydrophilic organic matter aerosol by large-scale precipitation	kg m-2 s-1	wet_deposition_of_hydrophilic_organic_matter_aerosol_by_large_scale_precipitation	aerwdlsomhphil	215056		X	X	Only available from 26 June 2018 12UTC
Wet deposition of hydrophobic black carbon aerosol by convective precipitation	kg m-2 s-1	wet_deposition_of_hydrophobic_black_carbon_aerosol_by_convective_precipitation	aerwdccbchphob	215073		X	X	Only available from 26 June 2018 12UTC
Wet deposition of hydrophobic black carbon aerosol by large-scale precipitation	kg m-2 s-1	wet_deposition_of_hydrophobic_black_carbon_aerosol_by_large_scale_precipitation	aerwdlsbchphob	215071		X	X	Only available from 26 June 2018 12UTC
Wet deposition of hydrophobic organic matter aerosol by convective precipitation	kg m-2 s-1	wet_deposition_of_hydrophobic_organic_matter_aerosol_by_convective_precipitation	aerwdccomhphob	215057		X	X	Only available from 26 June 2018 12UTC
Wet deposition of hydrophobic organic matter aerosol by large-scale precipitation	kg m-2 s-1	wet_deposition_of_hydrophobic_organic_matter_aerosol_by_large_scale_precipitation	aerwdlsomhphob	215055		X	X	Only available from 26 June 2018 12UTC
Wet deposition of sea salt aerosol (0.03 - 0.5 um) by convective precipitation	kg m-2 s-1	wet_deposition_of_sea_salt_aerosol_0.03-0.5um_by_convective_precipitation	aerwdccsss	215013		X

215013

X	Only available from 26 June 2018 12UTC
Wet deposition of sea salt aerosol (0.03 - 0.5 um) by large-scale precipitation	kg m-2 s-1	wet_deposition_of_sea_salt_aerosol_0.03-0.5um_by_large_scale_precipitation	aerwdlssss	215010	X	X	Only available from 26 June 2018 12UTC
Wet deposition of sea salt aerosol (0.5 - 5 um) by convective precipitation	kg m-2 s-1	wet_deposition_of_sea_salt_aerosol_0.5-5um_by_convective_precipitation	aerwdccssm	215014	X	X	Only available from 26 June 2018 12UTC
Wet deposition of sea salt aerosol (0.5 - 5 um) by large-scale precipitation	kg m-2 s-1	wet_deposition_of_sea_salt_aerosol_0.5-5um_by_large_scale_precipitation	aerwdlsssm	215011	X	X	Only available from 26 June 2018 12UTC
Wet deposition of sea salt aerosol (5 - 20 um) by convective precipitation	kg m-2 s-1	wet_deposition_of_sea_salt_aerosol_5-20um_by_convective_precipitation	aerwdccssl	215015	X	X	Only available from 26 June 2018 12UTC
Wet deposition of sea salt aerosol (5 - 20 um) by large-scale precipitation	kg m-2 s-1	wet_deposition_of_sea_salt_aerosol_5-20um_by_large_scale_precipitation	aerwdlsssl	215012	X	X	Only available from 26 June 2018 12UTC
Wet deposition of sulphate aerosol by convective precipitation	kg m-2 s-1	wet_deposition_of_sulphate_aerosol_by_convective_precipitation	aerwdccsu	215085	X	X	Only available from 26 June 2018 12UTC
Wet deposition of sulphate aerosol by large-scale precipitation	kg m-2 s-1	wet_deposition_of_sulphate_aerosol_by_large_scale_precipitation	aerwdlssu	215084	X		Only available from 26 June 2018 12UTC

Table 2: Multi-level parameters (last reviewed on 08 23 Apr 2021 )

Name	Units	Variable name in CDS API	Shortname	Param ID	Access type	fc	an	Note
Acetone	kg kg-1	acetone	ch3coch3	217052			X
Acetone product	kg kg-1	acetone_product	aco2	217053			X
Aerosol extinction coefficient at 1064 nm	m-1	aerosol_extinction_coefficient_1064nm	aerext1064	215182		X	X	Only available from 26 September 2017 00UTC
Aerosol extinction coefficient at 355 nm	m-1	aerosol_extinction_coefficient_355nm	aerext355	215180		X	X	Only available from 26 September 2017 00UTC
Aerosol extinction coefficient at 532 nm	m-1	aerosol_extinction_coefficient_532nm	aerext532	215181		X	X	Only available from 26 September 2017 00UTC
Aldehydes	kg kg-1	aldehydes	ald2	217012			X
Amine	kg kg-1	amine	nh2	217040			X
Ammonia	kg kg-1	ammonia	nh3	217019			X
Ammonium	kg kg-1	ammonium	nh4	217021			X
Ammonium aerosol mass mixing ratio	kg kg-1	ammonium_aerosol_mass_mixing_ratio	aermr18	210249	Fast access		X
Aerosol backscatter coefficient at 1064 nm (from ground)	m-1 sr-1	attenuated_backscatter_due_to_aerosol_1064nm_from_ground	aerbackscatgnd1064	215188		X	X	Only available from 26

June 2018 12UTC

September 2017 00UTC
Aerosol backscatter coefficient at 1064 nm (from top of atmosphere)	m-1 sr-1	attenuated_backscatter_due_to_aerosol_1064nm_from_top_of_atmosphere	aerbackscattoa1064	215185		X	X	Only available from 26

June 2018 12UTC

September 2017 00UTC
Aerosol backscatter coefficient at 355 nm (from ground)	m-1 sr-1	attenuated_backscatter_due_to_aerosol_355nm_from_ground	aerbackscatgnd355	215186		X	X	Only available from 26

June 2018 12UTC

September 2017 00UTC
Aerosol backscatter coefficient at 355 nm (from top of atmosphere)	m-1 sr-1	attenuated_backscatter_due_to_aerosol_355nm_from_top_of_atmosphere	aerbackscattoa355	215183		X	X	Only available from 26

June 2018 12UTC

September 2017 00UTC
Aerosol backscatter coefficient at 532 nm (from ground)	m-1 sr-1	attenuated_backscatter_due_to_aerosol_532nm_from_ground	aerbackscatgnd532	215187		X	X	Only available from 26

June 2018 12UTC

September 2017 00UTC
Aerosol backscatter coefficient at 532 nm (from top of atmosphere)	m-1 sr-1	attenuated_backscatter_due_to_aerosol_532nm_from_top_of_atmosphere	aerbackscattoa532	215184		X	X	Only available from 26

June 2018 12UTC

September 2017 00UTC
Carbon monoxide	kg kg-1	carbon_monoxide	co	210123	Fast access	X
Dimethyl sulfide	kg kg-1	dimethyl_sulfide	dms	217018		X
Dinitrogen pentoxide	kg kg-1	dinitrogen_pentoxide	n2o5	217033		X
Dust Aerosol (0.03 - 0.55 um) Mixing Ratio	kg kg-1	dust_aerosol_0.03-0.55um_mixing_ratio	aermr04	210004	Fast access	X
Dust Aerosol (0.55 - 0.9 um) Mixing Ratio	kg kg-1	dust_aerosol_0.55-0.9um_mixing_ratio	aermr05	210005	Fast access	X
Dust Aerosol (0.9 - 20 um) Mixing Ratio	kg kg-1	dust_aerosol_0.9-20um_mixing_ratio	aermr06	210006	Fast access	X
Ethane	kg kg-1	ethane	c2h6	217045	Fast access	X
Ethanol	kg kg-1	ethanol	c2h5oh	217046		X
Ethene	kg kg-1	ethene	c2h4	217010		X
Formaldehyde	kg kg-1	formaldehyde	hcho	210124	Fast access	X
Formic acid	kg kg-1	formic_acid	hcooh	217043		X
Fraction of cloud cover	(0 - 1)	fraction_of_cloud_cover	cc	248		X
Geopotential	m2 s-2	geopotential	z	129		X
Hydrogen peroxide	kg kg-1	hydrogen_peroxide	h2o2	217003	Fast access	X
Hydroperoxy radical	kg kg-1	hydroperoxy_radical	ho2	217028		X
Hydrophilic Black Carbon Aerosol Mixing Ratio	kg kg-1	hydrophilic_black_carbon_aerosol_mixing_ratio	aermr09	210009	Fast access	X
Hydrophilic Organic Matter Aerosol Mixing Ratio	kg kg-1	hydrophilic_organic_matter_aerosol_mixing_ratio	aermr07	210007	Fast access	X
Hydrophobic Black Carbon Aerosol Mixing Ratio	kg kg-1	hydrophobic_black_carbon_aerosol_mixing_ratio	aermr10	210010	Fast access	X
Hydrophobic Organic Matter Aerosol Mixing Ratio	kg kg-1	hydrophobic_organic_matter_aerosol_mixing_ratio	aermr08	210008	Fast access	X
Hydroxyl radical	kg kg-1	hydroxyl_radical	oh	217030	Fast access	X
Isoprene	kg kg-1	isoprene	c5h8	217016	Fast access	X
Lead	kg kg-1	lead	pb	217026		X
Methacrolein MVK	kg kg-1	methacrolein_mvk	ispd	217050		X
Methacrylic acid	kg kg-1	methacrylic_acid	mcooh	217044		X
Methane	kg kg-1	methane	ch4_c	217004	Fast access	X	Differences between CH4 and CH4_C
Methane sulfonic acid	kg kg-1	methane_sulfonic_acid	msa	217022		X
Methanol	kg kg-1	methanol	ch3oh	217042		X
Methyl glyoxal	kg kg-1	methyl_glyoxal	ch3cocho	217023		X
Methyl peroxide	kg kg-1	methyl_peroxide	ch3ooh	217007		X
Methylperoxy radical	kg kg-1	methylperoxy_radical	ch3o2	217029		X
Nitrate	kg kg-1	nitrate	no3_a	217051		X
Nitrate coarse mode aerosol mass mixing ratio	kg kg-1	nitrate_coarse_mode_aerosol_mass_mixing_ratio	aermr17	210248	Fast access	X
Nitrate fine mode aerosol mass mixing ratio	kg kg-1	nitrate_fine_mode_aerosol_mass_mixing_ratio	aermr16	210247	Fast access	X
Nitrate radical	kg kg-1	nitrate_radical	no3	217032		X
Nitric acid	kg kg-1	nitric_acid	hno3	217006	Fast access	X
Nitrogen dioxide	kg kg-1	nitrogen_dioxide	no2	210121	Fast access	X
Nitrogen monoxide	kg kg-1	nitrogen_monoxide	no	217027	Fast access	X
Olefins	kg kg-1	olefins	ole	217011		X
Organic ethers	kg kg-1	organic_ethers	ror	217036		X
Organic nitrates	kg kg-1	organic_nitrates	onit	217015		X
Ozone	kg kg-1	ozone	go3	210203	Fast access	X
Paraffins	kg kg-1	paraffins	par	217009		X
Pernitric acid	kg kg-1	pernitric_acid	ho2no2	217034		X
Peroxides	kg kg-1	peroxides	rooh	217014		X
Peroxy acetyl radical	kg kg-1	peroxy_acetyl_radical	c2o3	217035		X
Peroxyacetyl nitrate	kg kg-1	peroxyacetyl_nitrate	pan	217013	Fast access	X
Potential vorticity	K m2 kg-1 s-1	potential_vorticity	pv	60		X
Propane	kg kg-1	propane	c3h8	217047	Fast access	X
Propene	kg kg-1	propene	c3h6	217048		X
Radon	kg kg-1	radon	ra	210181		X
Relative humidity	%	relative_humidity	r	157		X
Sea Salt Aerosol (0.03 - 0.5 um) Mixing Ratio	kg kg-1	sea_salt_aerosol_0.03-0.5um_mixing_ratio	aermr01	210001	Fast access	X
Sea Salt Aerosol (0.5 - 5 um) Mixing Ratio	kg kg-1	sea_salt_aerosol_0.5-5um_mixing_ratio	aermr02	210002	Fast access	X
Sea Salt Aerosol (5 - 20 um) Mixing Ratio	kg kg-1	sea_salt_aerosol_5-20um_mixing_ratio	aermr03	210003	Fast access	X
Specific cloud ice water content	kg kg-1	specific_cloud_ice_water_content	ciwc	247		X
Specific cloud liquid water content	kg kg-1	specific_cloud_liquid_water_content	clwc	246		X
Specific humidity	kg kg-1	specific_humidity	q	133	Fast access	X
Specific rain water content	kg kg-1	specific_rain_water_content	crwc	75		X
Specific snow water content	kg kg-1	specific_snow_water_content	cswc	76		X
Stratospheric ozone	kg kg-1	stratospheric_ozone_tracer	o3s	217024		X
Sulphate Aerosol Mixing Ratio	kg kg-1	sulphate_aerosol_mixing_ratio	aermr11	210011	Fast access	X
Sulphur dioxide	kg kg-1	sulphur_dioxide	so2	210122	Fast access	X
Temperature	K	temperature	t	130	Fast access	X
Terpenes	kg kg-1	terpenes	c10h16	217049		X
U component of wind	m s-1	u_component_of_wind	u	131	Fast access	X
V component of wind	m s-1	v_component_of_wind	v	132	Fast access	X
Vertical velocity	Pa s-1	vertical_velocity		135		X

Satellite observations

Satellite observations are used by CAMS to constrain the global forecast model, ensuring the forecasts are as accurate as possible. The process of merging the numerical forecast model with the observations is called data assimilation.

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Key

Table 1: single level parameters (last reviewed on 08 23 Apr 2021 )

Table 2: Multi-level parameters (last reviewed on 08 23 Apr 2021 )

Satellite observations