Available
products and basic product specifications
Available
products and basic product specifications
Available
products
and basic product specifications
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Available products |
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Level 1 |
Level 2 |
Level 3 |
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Precipitation |
Crop growth conditions |
Crop yield forecasts |
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Global radiation |
Drought index |
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Net radiation |
Climatic moisture index |
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Actual evapotranspiration |
Soil moisture index |
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Potential evapotranspiration |
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Sensible heat flux |
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Crops: Maize, sorghum, barley, wheat, rangeland |
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Change products = difference with the previous year or 5-year average |
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Basic product specifications |
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Projection |
Latitude-Longitude or METEOSAT projections |
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Spatial resolution |
5 km at sub-satellite point |
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Data type |
Generic binary files, 8 or 16 bit data |
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Integration period |
10-daily(dekadal), monthly, yearly |
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Timeliness |
2-3 working days |
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Standard regions |
North West Africa (NWA), North Middle Africa (NMA), North East Africa (NEA), Middle East Africa (MEA), Southern Africa (SMA, SA), Europe (EUR), West Mediterranean (AS1), East Mediterranean (AS2). Click here to see map. |
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Sub-sets |
Sub-regions as defined by client |
The generic binary data
products can be imported in almost any GIS and be viewed as spatially continuous
maps. Furthermore, they can be used for further processing and analysis. When
importing the files in a GIS, you will have to provide the numbers of rows and
columns, and the number of bits per pixel. The number of rows and columns depend
on the region for which you have requested the products. The number of bits per
pixel depends on the product type. To make it easier for the user to process and evaluate
the products, we have developed five 'analysis tools'. Click here for
more information.
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Level 1 |
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Precipitation |
Spatially continuous maps of precipitation in mm, based on METEOSAT derived cloud durations and WMO-GTS rain gauge data. |
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Global radiation |
Daily averages of direct + diffuse solar radiation at the earth’s surface, based on METEOSAT derived atmospheric transmission and cloudiness, expressed in W/m2. |
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Net radiation |
Daily averages of absorbed - emitted solar and terrestrial radiation at the earth’s surface, based on METEOSAT derived surface albedo, surface temperature, air temperature, atmospheric transmission and cloudiness, expressed in W/m2. |
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Actual |
The actual loss of water from the surface, due to the combined process of evaporation and transpiration. Values are based on METEOSAT derived surface albedo, surface temperature, air temperature, atmospheric transmission and cloudiness, expressed as total (mm) or average (mm/day). |
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Potential |
The rate of evapotranspiration that will occur from a well watered, actively growing, short green crop completely covering the ground surface. Values are based on METEOSAT derived surface albedo, surface temperature, air temperature, atmospheric transmission and cloudiness, expressed as total (mm) or average (mm/day). |
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Level 2 |
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Climatic moisture index |
Ratio of yearly rainfall and yearly potential evapotranspiration, expressed in %. |
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Soil moisture index |
Ratio of yearly actual evapotranspiration and yearly potential evapotranspiration, expressed in %. |
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Drought index, Growth conditions |
Ratio of dekadal or monthly actual evapotranspiration and potential evapotranspiration, expressed in %. |
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Level 3 |
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Crop yield forecast |
Dekadal or monthly estimate of end-of-season crop yield as a percentage of the non-water limited crop yield. This product is issued only during the second half of the growing season. |