Global Flood Detection System – Data
Satellite observations are processed as soon as they are available at JRC. Lag times vary for different satellites from around 3 hours (AMSR2) to around 24 hours (GPM). GFDS has processed all data for TRMM, AMSR-E, AMSR2 and GPM, covering a time period from December 1997 to now.
Observations are converted in raster products on a daily basis and with global coverage, effectively providing water surface metrics with daily frequency for any location in the world.
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Folder name
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Content
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Comments
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ALL
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Merged daily and 4-day average datasets
1997-current, updated every 3h
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Best dataset for operational applications. Highest sampling rate, global coverage. May have artifacts due to multi-sensor integration. Some known spatial calibration issues exist among sensors (1/2 pixel systematic shift).
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SINGLE
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Single sensor daily and 4-day average datasets
1997-current, updated every 3h
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Best dataset for scientific studies. Lower sampling rate, not always global coverage. No noise from multi-sensor integration. Some known spatial calibration issues exist among sensors (1/2 pixel systematic shift).
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GPM
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Data from Global Precipitation Mission
Updated every 3h
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TRMM
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Data from Tropical Rainfall Monitoring Mission
No longer updated
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AMSR2
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Data from AMSR2
Updated every 3h
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AMSR-E
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Data from AMSR-E
No longer updated
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For more technical information, please refer to the Technical Note on GFDS Data Products.
