Measuring Agricultural Impacts of Disasters with Satellites: A Case Study Analysis

Authors: Lisa Colson*, USDA/Foreign Agricultural Service
Topics: Agricultural Geography, Remote Sensing, Hazards, Risks, and Disasters
Keywords: Remote sensing, agriculture, hazards
Session Type: Paper
Day: 4/6/2019
Start / End Time: 1:10 PM / 2:50 PM
Room: Tyler, Marriott, Mezzanine Level
Presentation File: No File Uploaded


Near-real time hazard mapping and analysis is critically needed for operational organizations, such as the U.S. Department of Agriculture – Foreign Agricultural Service. Natural hazards pose a real threat to crop development, but not in all cases does the event result in crop damage. The timing and length of a natural hazard event make a substantial difference between being minor, localized damage, or a national disaster reducing crop production. This case study demonstrates techniques for quickly and reliably mapping natural hazards using satellite imagery and then monitoring the croplands with additional sources of data to further assess the degree and extent of cropland damage.

This case study will feature remote sensing and GIS analysis of a natural hazard on croplands in a major crop-producing country. The study will demonstrate the importance of radar and other multi-temporal satellite imagery to capture flood extents, including the application of supervised and unsupervised classification techniques to quickly and reliably converge on the best delineation of the event, and then explain how and when other sources of data are used to further monitor and quantify the degree to which the event impacted the area or production of major crops in that country.

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