Page History

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Fast access	Parameters labelled as "Fast access" are stored on disk while parameters labelled as "slow access" are stored on tape. Retrieval of this data will be MUCH SLOWER than disk-resident data.
	Parameters highlighted in green were introduced with the new upgrade (48R1).

Note

Many forecast meteorological variables are available with 6 days delay from present and data returned from API requests will have these meteorological fields filtered out automatically.

Please note the following forecast model level meteorological variables are available without any time restriction:

Geopotential
Specific humidity
Temperature
U-component of wind
V-component of wind
Vertical velocity

Note

PLEASE NOTE: *Total column (in kg m^-2) is available at the surface (model level 137 for MARS users; before 9 July 2019, model level 60). Total column refers to the total amount of the selected variable in a column of air extending from the surface of the Earth to the top of the atmosphere (model level 1 for MARS users). Total column can also be referred to as total <selected variable>, or vertically integrated <selected variable>.

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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	X
10 metre V wind component	m s^-1	10m_v_component_of_wind	10v	166	Fast access	X	X
2 metre dewpoint temperature	K	2m_dewpoint_temperature	2d	168	Fast access	X	X
2 metre temperature	K	2m_temperature	2t	167	Fast access	X	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
Black Carbon Aerosol Optical Depth at 550nm	dimensionless	black_carbon_aerosol_optical_depth_550nm	bcaod550	210211	Fast access	X	X
Dust Aerosol Optical Depth at 550nm	dimensionless	dust_aerosol_optical_depth_550nm	duaod550	210209	Fast access	X	X
Land-sea mask	(0 - 1)	land_sea_mask	lsm	172	Fast access	X	X
Mean sea level pressure	Pa	mean_sea_level_pressure	msl	151	Fast access	X	X
Nitrate aerosol optical depth at 550 nm	dimensionless	nitrate_aerosol_optical_depth_550nm	niaod550	210250	Fast access	X	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	X
Particulate matter d < 10 um	kg m^-3	particulate_matter_10um	pm10	210074	Fast access	X	X	PM10 and PM25 global products
Particulate matter d < 2.5 um	kg m^-3	particulate_matter_2.5um	pm2p5	210073	Fast access	X	X	PM10 and PM25 global products
Particulate matter d < 1 um	kg m^-3	particulate_matter_1um	pm1	210072	Fast access	X	X
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
Sulphate aerosol optical depth at 550 nm	dimensionless	sulphate_aerosol_optical_depth_550nm	suaod550	210212	Fast access		X
Surface geopotential	m² s^-2	surface_geopotential	z	129	Fast access		X
Surface pressure	Pa	surface_pressure	sp	134	Fast access	X	X	Only available from 21 June 2016 00UTC
Total aerosol optical depth at 1240nm	dimensionless	total_aerosol_optical_depth_1240nm	aod1240	210216	Fast access	X	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	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	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	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	X	Only available from 26 June 2018 12UTC
Total column Carbon monoxide	kg m^-2	total_column_carbon_monoxide	tcco	210127	Fast access	X	X
Total column of chlorine monoxide	kg m^-2	total_column_chlorine_monoxide	tc_clo	218174	Fast access	X	X	Available from 28 June 2023
Total column of chlorine nitrate	kg m^-2	total_column_chlorine_nitrate	tc_clono2	218064	Fast access	X	X	Available from 28 June 2023
Total column ethane	kg m^-2	total_column_ethane	tc_c2h6	218045	Fast access	X	X
Total column Formaldehyde	kg m^-2	total_column_formaldehyde	tchcho	210128	Fast access	X	X
Total column hydrogen chloride	kg m^-2	total_column_hydrogen_chloride	tc_hcl	218200	Fast access	X	X	Available from 28 June 2023
Total column hydrogen cyanide	kg m^-2	total_column_hydrogen_cyanide	tc_HCN	218226	Fast access	X	X	Available from 28 June 2023
Total column hydrogen peroxide	kg m^-2	total_column_hydrogen_peroxide	tc_h2o2	218003	Fast access	X	X	Only available from 26 June 2018 12UTC
Total column hydroxyl radical	kg m^-2	total_column_hydroxyl_radical	tc_oh	218030	Fast access	X	X
Total column isoprene	kg m^-2	total_column_isoprene	tc_c5h8	218016	Fast access	X	X
Total column methane	kg m^-2	total_column_methane	tc_ch4	218004	Fast access	X	X
Total column nitric acid	kg m^-2	total_column_nitric_acid	tc_hno3	218006	Fast access	X	X
Total column Nitrogen dioxide	kg m^-2	total_column_nitrogen_dioxide	tcno2	210125	Fast access	X	X
Total column nitrogen monoxide	kg m^-2	total_column_nitrogen_monoxide	tc_no	218027	Fast access	X	X
GEMS Total column ozone	kg m^-2	total_column_ozone	gtco3	210206	Fast access	X	X
Total column peroxyacetyl nitrate	kg m^-2	total_column_peroxyacetyl_nitrate	tc_pan	218013	Fast access	X	X
Total column propane	kg m^-2	total_column_propane	tc_c3h8	218047	Fast access	X	X
Total column Sulphur dioxide	kg m^-2	total_column_sulphur_dioxide	tcso2	210126	Fast access	X	X
Total column water vapour	kg m^-2	total_column_water_vapour	tcwv	137	Fast access	X	X
UV biologically effective dose	dimensionless	uv_biologically_effective_dose	uvbed	214002	Fast access	X	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	X	Only available from 03 September 2015 00UTC

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Name	Units	Variable name in CDS API	Shortname	Param ID	Access type	fc	an	Note
Ammonium aerosol mass mixing ratio	kg kg-1	ammonium_aerosol_mass_mixing_ratio	aermr18	210249	Fast access	X	X
Anthropogenic secondary organic aerosol mass mixing ratio	kg kg-1	anthropogenic_secondary_organic_aerosol_mixing_ratio	aermr20	210253	Fast access			Available from 28 June 2023
Biogenic secondary organic aerosol mass mixing ratio	kg kg-1	biogenic_secondary_organic_aerosol_mixing_ratio	aermr19	210252	Fast access			Available from 28 June 2023
Carbon monoxide	kg kg-1	carbon_monoxide	co	210123	Fast access	X	X
Chlorine monoxide	kg kg-1	chlorine_monoxide	clo	217174	Fast access	X	X	Available from 28 June 2023
Chlorine nitrate	kg kg-1	chlorine_nitrate	clono2	217064	Fast access	X	X	Available from 28 June 2023
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	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	X
Dust Aerosol (0.9 - 20 um) Mixing Ratio	kg kg-1	dust_aerosol_0.9-20um_mixing_ratio	aermr06	210006	Fast access	X	X
Ethane	kg kg-1	ethane	c2h6	217045	Fast access	X	X
Formaldehyde	kg kg-1	formaldehyde	hcho	210124	Fast access	X	X
Hydrogen chloride	kg kg-1	hydrogen_chloride	hcl	217200		X	X	Available from 28 June 2023
Hydrogen cyanide	kg kg-1	hydrogen_cyanide	HCN	217226		X	X	Available from 28 June 2023
Hydrogen peroxide	kg kg-1	hydrogen_peroxide	h2o2	217003	Fast access	X	X
Hydrophilic Black Carbon Aerosol Mixing Ratio	kg kg-1	hydrophilic_black_carbon_aerosol_mixing_ratio	aermr09	210009	Fast access	X	X
Hydrophilic Organic Matter Aerosol Mixing Ratio	kg kg-1	hydrophilic_organic_matter_aerosol_mixing_ratio	aermr07	210007	Fast access	X	X
Hydrophobic Black Carbon Aerosol Mixing Ratio	kg kg-1	hydrophobic_black_carbon_aerosol_mixing_ratio	aermr10	210010	Fast access	X	X
Hydrophobic Organic Matter Aerosol Mixing Ratio	kg kg-1	hydrophobic_organic_matter_aerosol_mixing_ratio	aermr08	210008	Fast access	X	X
Hydroxyl radical	kg kg-1	hydroxyl_radical	oh	217030	Fast access	X	X
Isoprene	kg kg-1	isoprene	c5h8	217016	Fast access	X	X
Logarithm of surface pressure	~	logarithm_of_surface_pressure	lnsp	152	Fast access	X	X	Available only at level=1
Methane	kg kg-1	methane	ch4_c	217004	Fast access	X	X	Differences between CH4 and CH4_C
Nitrate coarse mode aerosol mass mixing ratio	kg kg-1	nitrate_coarse_mode_aerosol_mass_mixing_ratio	aermr17	210248	Fast access	X	X
Nitrate fine mode aerosol mass mixing ratio	kg kg-1	nitrate_fine_mode_aerosol_mass_mixing_ratio	aermr16	210247	Fast access	X	X
Nitric acid	kg kg-1	nitric_acid	hno3	217006	Fast access	X	X
Nitrogen dioxide	kg kg-1	nitrogen_dioxide	no2	210121	Fast access	X	X
Nitrogen monoxide	kg kg-1	nitrogen_monoxide	no	217027	Fast access	X	X
Ozone	kg kg-1	ozone	go3	210203	Fast access	X	X
Peroxyacetyl nitrate	kg kg-1	peroxyacetyl_nitrate	pan	217013	Fast access	X	X
Propane	kg kg-1	propane	c3h8	217047	Fast access	X	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	X	CAMS global sea salt aerosol mixing ratios
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	X	CAMS global sea salt aerosol mixing ratios
Sea Salt Aerosol (5 - 20 um) Mixing Ratio	kg kg-1	sea_salt_aerosol_5-20um_mixing_ratio	aermr03	210003	Fast access	X	X	CAMS global sea salt aerosol mixing ratios
Specific humidity	kg kg-1	specific_humidity	q	133	Fast access	X	X
Sulphate Aerosol Mixing Ratio	kg kg-1	sulphate_aerosol_mixing_ratio	aermr11	210011	Fast access	X	X
Sulphur dioxide	kg kg-1	sulphur_dioxide	so2	210122	Fast access	X	X
Temperature	K	temperature	t	130	Fast access	X	X
U component of wind	m s-1	u_component_of_wind	u	131	Fast access	X	X
V component of wind	m s-1	v_component_of_wind	v	132	Fast access	X	X

...

Name	Units	Variable name in CDS API	Shortname	Param ID	Access type	fc	an	Note
Acetone	kg kg-1	acetone	ch3coch3	217052		X	X
Acetone product	kg kg-1	acetone_product	aco2	217053		X	X
Acetonitrile	kg kg-1		CH3CN	217224		X	X	Available from 28 June 2023
Aerosol extinction coefficient at 1064 nm	m-1	aerosol_extinction_coefficient_1064nm	aerext1064	215182		X		Only available from 26 September 2017 00UTC
Aerosol extinction coefficient at 355 nm	m-1	aerosol_extinction_coefficient_355nm	aerext355	215180		X		Only available from 26 September 2017 00UTC
Aerosol extinction coefficient at 532 nm	m-1	aerosol_extinction_coefficient_532nm	aerext532	215181		X		Only available from 26 September 2017 00UTC
Aldehydes	kg kg-1	aldehydes	ald2	217012		X	X
Amine	kg kg-1	amine	nh2	217040		X	X
Ammonia	kg kg-1	ammonia	nh3	217019		X	X
Ammonium	kg kg-1	ammonium	nh4	217021		X	X
Aerosol backscatter coefficient at 1064 nm (from ground)	m-1 sr-1	attenuated_backscatter_due_to_aerosol_1064nm_from_ground	aerbackscatgnd1064	215188		X		Only available from 26 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		Only available from 26 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		Only available from 26 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		Only available from 26 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		Only available from 26 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		Only available from 26 September 2017 00UTC
Anthropogenic secondary organic aerosol mass mixing ratio	kg kg-1	anthropogenic_secondary_organic_aerosol_mixing_ratio	aermr20	210253		X	X	Available from 28 June 2023
Asymmetric chlorine dioxide radical
Biogenic secondary organic aerosol mass mixing ratio	kg kg-1	biogenic_secondary_organic_aerosol_mixing_ratio	aermr19	210252		X	X	Available from 28 June 2023
Bromine	kg kg-1	bromine	br2	217192		X	X	Available from 28 June 2023
Bromine atom	kg kg-1	bromine_atom	br	217191		X	X	Available from 28 June 2023
Bromine monochloride	kg kg-1	bromine_monochloride	brcl	217193		X	X	Available from 28 June 2023
Bromine monoxide	kg kg-1	bromine_monoxide	bro	217176		X	X	Available from 28 June 2023
Bromine nitrate	kg kg-1	bromine_nitrate	brono2	217194		X	X	Available from 28 June 2023
Bromochlorodifluoromethane	kg kg-1	bromochlorodifluoromethane	ha1211	217082		X	X	Available from 28 June 2023
Chlorine	kg kg-1	chlorine	cl2	217066		X	X	Available from 28 June 2023
Chlorine atom	kg kg-1	chlorine_atom	cl_c	217175		X	X	Available from 28 June 2023
Chlorine dioxide	kg kg-1	chlorine_dioxide	oclo	217063		X	X	Available from 28 June 2023
Chlorodifluoromethane	kg kg-1	chlorodifluoromethane	hcfc22	217079		X	X	Available from 28 June 2023
Chloropentafluoroethane	kg kg-1	chloropentafluoroethane	cfc115	217075		X	X	Available from 28 June 2023
Dibromomethane	kg kg-1	dibromomethane	ch2br2	217195		X	X	Available from 28 June 2023
Dichlorine dioxide	kg kg-1	dichlorine_dioxide	cl2o2	217069		X	X	Available from 28 June 2023
Dichlorodifluoromethane	kg kg-1	dichlorodifluoromethane	cfc12	217072		X	X	Available from 28 June 2023
Dichlorotetrafluoroethane	kg kg-1	dichlorotetrafluoroethane	cfc114	217074		X	X	Available from 28 June 2023
Dimethyl sulfide	kg kg-1	dimethyl_sulfide	dms	217018		X	X
Dinitrogen pentoxide	kg kg-1	dinitrogen_pentoxide	n2o5	217033		X	X
Ethanol	kg kg-1	ethanol	c2h5oh	217046		X	X
Ethene	kg kg-1	ethene	c2h4	217010		X	X
Formic acid	kg kg-1	formic_acid	hcooh	217043		X	X
Fraction of cloud cover	(0 - 1)	fraction_of_cloud_cover	cc	248		X	X
Geopotential	m² s^-2	geopotential	z	129		X	X
Glyoxal	kg kg-1	glyoxal	glyoxal	217107		X	X	Available from 28 June 2023
Hydrogen bromide	kg kg-1	hydrogen_bromide	hbr	217068		X	X	Available from 28 June 2023
Hydrogen fluoride	kg kg-1	hydrogen_fluoride	hf	217202		X	X	Available from 28 June 2023
Hydroperoxy radical	kg kg-1	hydroperoxy_radical	ho2	217028		X	X
Hypobromous acid	kg kg-1	hypobromous_acid	hobr	217070		X	X	Available from 28 June 2023
Hypochlorous acid	kg kg-1	hypochlorous_acid	hocl	217065		X	X	Available from 28 June 2023
Logarithm of surface pressure	Numeric	logarithm_of_surface_pressure	lnsp	152		X	X
Lead	kg kg-1	lead	pb	217026		X	X
Methacrolein MVK	kg kg-1	methacrolein_mvk	ispd	217050			X
Methacrylic acid	kg kg-1	methacrylic_acid	mcooh	217044		X	X
Methane sulfonic acid	kg kg-1	methane_sulfonic_acid	msa	217022		X	X
Methanol	kg kg-1	methanol	ch3oh	217042		X	X
Methyl bromide	kg kg-1	methyl_bromide	ch3br	217080		X	X	Available from 28 June 2023
Methyl chloride	kg kg-1	methyl_chloride	ch3cl	217078		X	X	Available from 28 June 2023
Methyl chloroform	kg kg-1	methyl_chloroform	ch3ccl3	217077		X	X	Available from 28 June 2023
Methyl glyoxal	kg kg-1	methyl_glyoxal	ch3cocho	217023		X	X
Methyl peroxide	kg kg-1	methyl_peroxide	ch3ooh	217007		X	X
Methylperoxy radical	kg kg-1	methylperoxy_radical	ch3o2	217029		X	X
Nitrate	kg kg-1	nitrate	no3_a	217051		X	X
Nitrate radical	kg kg-1	nitrate_radical	no3	217032		X	X
Nitryl chloride	kg kg-1	nitryl_chloride	clno2	217067		X	X	Available from 28 June 2023
Olefins	kg kg-1	olefins	ole	217011		X	X
Organic ethers	kg kg-1	organic_ethers	ror	217036		X	X
Organic nitrates	kg kg-1	organic_nitrates	onit	217015		X	X
Paraffins	kg kg-1	paraffins	par	217009		X	X
Pernitric acid	kg kg-1	pernitric_acid	ho2no2	217034		X	X
Peroxides	kg kg-1	peroxides	rooh	217014		X	X
Peroxy acetyl radical	kg kg-1	peroxy_acetyl_radical	c2o3	217035		X	X
Potential vorticity	K m2 kg-1 s-1	potential_vorticity	pv	60		X	X
Propene	kg kg-1	propene	c3h6	217048		X	X
Radon	kg kg-1	radon	ra	210181		X	X
Relative humidity	%	relative_humidity	r	157		X	X
Specific cloud ice water content	kg kg-1	specific_cloud_ice_water_content	ciwc	247		X	X
Specific cloud liquid water content	kg kg-1	specific_cloud_liquid_water_content	clwc	246		X	X
Specific rain water content	kg kg-1	specific_rain_water_content	crwc	75		X	X
Specific snow water content	kg kg-1	specific_snow_water_content	cswc	76		X	X
Stratospheric ozone	kg kg-1	stratospheric_ozone_tracer	o3s	217024		X	X
Terpenes	kg kg-1	terpenes	c10h16	217049		X	X
Tetrachloromethane	kg kg-1	tetrachloromethane	ccl4	217076		X	X	Available from 28 June 2023
Tribromomethane	kg kg-1	tribromomethane	chbr3	217197		X	X	Available from 28 June 2023
Trichlorofluoromethane	kg kg-1	trichlorofluoromethane	cfc11	217071		X	X	Available from 28 June 2023
Trichlorotrifluoroethane	kg kg-1	trichlorotrifluoroethane	cfc113	217073		X	X	Available from 28 June 2023
Trifluorobromomethane	kg kg-1	trifluorobromomethane	ha1301	217083		X	X	Available from 28 June 2023
Vertical velocity	Pa s-1	vertical_velocity	w	135		X	X
Water vapour (chemistry)	kg kg-1	water_vapour_chemistry	h2o	217059		X	X	Available from 28 June 2023

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