Page History

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• LANCE UWG request 
• LANCE Flood mapping - current and near real-time solution.png
• LANCE Flood mapping - future solution. png
• LANCE Transition Architecture Outline (by Dan Slayback)
• ZenithAngles_v2.txt
• Presentations to LANCE UWG June 2023:
  • Update on LANCE Flood Product (MCDWD),  Dan Slayback
  • Case study using S3 OLCI Data for Water Detection, Tian Yao
• Updated PGE159 documentation from David Landis (12/26/2023)

Flood Process Summary

• PGE 152: Water detection, from MOD09 swath granules.

• PGE 155: Map swath granules to output grid (lat/lon, 10x10° tiles, “heavy”).

• PGE 170: Select and retain best within-swath pixel (“lite”: contains one layer for every swath overpass, for a given pixel).

• PGE 159: (Level-3) Composites (over time), applies thresholding, masks, and compares to reference water to identify flood.

  1,2,and 3-day composites

  MCDWD implementation includes data from all overlapping swaths

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