FloodScan: Near Real-Time and Historical Flood Mapping

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  • This dataset updates: Every day
Additional information
Time Period of the Dataset [?]
November 11, 2024-February 09, 2025 ... More
Modified [?]
11 February 2025
Dataset Added on HDX [?]
31 January 2025 Less
Expected Update Frequency
Every day
Source
AER FloodScan: Atmospheric and Environmental Research (AER).
Methodology

Raster

  • Daily FloodScan SFED(flood fraction) band obtained directly from AER.

  • Daily historical SFED band smoothed with 11 day centered rolling mean (+/-5 days).

  • Average day-of-year (DOY) raster calculated using last 10 years of smoothed data (2013-2023) to create SFED Baseline band

  • SFED & SFED Baseline band merged per day.

  • Last 90 days of merged SFED + SFED Baseline bands zipped

Tabular

  • Daily zonal stats (mean) for all historical SFED data 1998-01-01 - 2023-12-31 for each Admin 2 covered by FloodScan extent

  • Return periods calculated form zonal mean data per admin 2 using the Log III Pearson distribution.

Caveats / Comments

Modified and Simplified by UN OCHA

File Format
Visibility
Public
Export metadata for this dataset: JSON | CSV
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Downloads

Data and Resources [2]