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A total of 26 indicators are provided, covering the global land area at the spatial resolution of 0.5°x0.5° lat-lon grid. For many indicators a dekad1resolution is used, a unit often used in agricultural sciences that allows aggregation of (summable) indicators to varying growing seasons and crop phenological phases around the world, more precisely than a monthly resolution would. A brief review of the agroclimatic indicators provided by C3S global agrilculture SIS is given in tables below:
DATA DESCRIPTION | |
Horizontal coverage | Global |
Horizontal resolution | 0.5° x 0.5° |
Temporal coverage | 1951 to 2099 |
Temporal resolution | Dekad (10 daily) Seasonal |
Seasonal | netCDF-4 |
Yearly | Grid |
| Info | ||||||
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MAIN VALRIABLES | ||
Variable | Description | Units |
CDD | Maximum number of consecutive dry days (Drought spell) | day |
CFD | Maximum number of consecutive frost days (Cold spell) | day |
CSDI | Cold-spell duration index | day |
WSDI | Warm-spell duration index | day |
CSU | Maximum number of consecutive summer days (Hot spell) | day |
CWD | Maximum number of consecutive wet days (Wet spell) | day |
WW | Warm and wet days | day |
DTR | Mean of diurnal temperature range | °C |
BEDD | Biologically Effective Degree Days | °C |
GSL | Growing Season Length | day |
FD | Frost Days | day |
ID | Ice Days | day |
R10mm | Heavy precipitation days | day |
R20mm | Very heavy precipitation days | day |
RR | Precipitation sum | mm |
RR1 | Wet Days | day |
SDII | Simple daily intensity index | mm |
SU | Summer days | day |
TG | Mean of daily mean temperature | K |
TN | Mean of daily minimum temperature | K |
TNn | Minimum value of the daily minimum Temperature | K |
TNx | Maximum value of the daily minimum temperature | K |
TR | Tropical nights | day |
TX | Mean of daily maximum temperature | K |
TXn | Minimum value of daily maximum temperature | K |
TXx | Maximum value of daily maximum temperature | K |
From this list the following indicators: CDD, CFD, CSDI , WSDI, CSU, CWD have a seasonal resolution, and the GSL has an annual resolution. All others have dekadal resolution.
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| Anchor | ||||
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Acronym | Description | Application |
| Maximum number of consecutive dry days | Drought monitoring, drought damage indicator |
| Maximum number of consecutive frost days |
|
CSDI | Cold-spell duration index | Provides information on reduced |
|
| Provide an indication concerning the occurrence of heat stress on reduced |
| Maximum number of consecutive summer days | Provides information on |
| Maximum number of consecutive wet days | Provides information on drought/oxygen stress/ crop growth (i.e. less radiation interception during rainy |
|
| Provide an indication of occurrence of various pests insects and especially fungi Provides an indication concerning the crop development, especially leave formation. |
| Provides information on climate variability and change. Also serves as the proxy for information on the clarity | |
BEDD*) | Biologically Effective Degree Days | Determines crop development stages/rates. Crop development will decelerate/accelerate below and above certain threshold temperatures. |
GSL | Growing Season Length | Provides an indication whether a crop or a combination of crops can be sown and subsequently reach maturity within a |
Provides information on frost damage | ||
Provides information on frost damage | ||
R10mm | Heavy precipitation days | Provides information on crop damage |
R20mm | Very heavy precipitation days | Provides information on crop damage |
Precipitation sum | Provides information on possible water shortage or excess. | |
Provides information on intercepted | ||
SDII | Simple daily intensity index | Provides information on possible run off |
|
| Provide an indication concerning the occurrence of heat stress. Also base for crop specific variants for heat/cold |
Provides information on long-term | ||
Provides information on long-term | ||
Provides information on long-term climate variability and change | ||
Provides information on long-term | ||
TR | Tropical nights | Provide an indication of occurrence of |
Provides information on long-term climate variability and change | ||
Provides information on long-term | ||
Provides information on long-term |
*) these indicators have been pre-calculated for the range of threshold temperatures
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| Anchor | ||||
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Climate Model | Scenario | ||||
Historical | rcp26 | rcp45 | rcp60 | rcp85 | |
GFDL-ESM2M | √ | √ | √ | √ | √ |
HadGEM2-ES | √ | √ | √ | √ | √ |
IPSL-CM5A-LR | √ | √ | √ | √ | √ |
MIROC-ESM-CHEM | √ | √ | √ | √ | √ |
NorESM1-M | √ | √ | √ | √ | √ |
Agroclimatic indicators have been pre-calculated for this complete matrix of GCM/RCP combinations.
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For further documentation on the origin and processing of these data see Global Agriculture SIS Algorithm Theoretical Basis Document (ATBD) documentdocument.
The following variables can be accessed through the Toolbox:
Variable | Description |
area_rs_h | harvested area, rainfed, subsistence |
area_rs_p | physical area, rainfed, subsistence |
area_rh_h | harvested area, rainfed, high input |
area_rh_p | physical area, rainfed, high input |
area_rl_h | harvested area, rainfed, low input |
area_rl_p | physical area, rainfed, low input |
area_ir_h | harvested area, irrigated |
area_ir_p | physical area, irrigated |
sow_a | average sowing/planting dekad |
sow_e | early sowing/planting dekad |
sow_l | late sowing/planting dekad |
har_a | average harvest dekad |
har_e | early harvest dekad |
har_l | late harvest dekad |
tsumEA | temperature sum from emergence to anthesis |
tsumAM | temperature sum from anthesis to maturity |
tsumEM | temperature sum from emergence to maturity |
ME1*) | mega environment 1 |
... | mega environment n |
ME8/12 | mega environment 12 for wheat, mega environment 8 for maize |
*) only provided for wheat and maize; definition of each mega environments in terms of climatic constraints differ per crop; see ATBD document.
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