Global Surface Water Density Map

Citation Author(s):
Manuel
Huber
Craig James
Donlon
Montserrat Pinol
Sole
Submitted by:
Manuel Huber
Last updated:
Fri, 06/03/2022 - 07:17
DOI:
10.21227/qj0z-r346
License:
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Abstract 

The Copernicus Sentinel-3 mission is part of the first generation of Copernicus satellites and was set out to deliver operationally high quality measurements over ocean, land and atmosphere. The European Space Agency is now studying concepts for the Next Generation Sentinel-3 Topography mission (S3NGT) mission that would launch in the 2032+ time period. In order to meet the primary objectives of the S3NGT mission requirement document a complex analysis of river and lake targets is required to size the satellite mass memory and downlink system. We have adopted a different approach that derives a non-conservative mask of water density that defines a more useful user friendly approach to specifying where river and lake targets are located. Within this work the design and construction of our water density maps as well as application examples are discussed. The results prove an easy-to-apply methodology to create global surface water density maps using different high resolution water body maps. The work further illustrates different use cases to optimize data sizing considering constraints as global coverage, river width and total data volume.

Instructions: 

Description Datasets:

 

·      Grid Cell Resolution 25km and 10km – referred as 25000 and 10000 in file description

·       Projection EPSG:4326

·      Files are provided for all three maps as KMZ and GeoTiff file

·      Units range from 0 -100 % of water within a grid cell

·      Cells with no data as well as oceans are set to 0

 

Files:

 

1.     25000_MERIT.tiff + 25000_MERIT.kmz

2.     25000_JRC.tiff + 25000_JRC.kmz

3.     25000_ESA.tiff + 25000_ESA.kmz

4.     10000_MERIT.tiff + 10000_MERIT.kmz

Funding Agency: 
ESA ESTEC