Synthetic Aperture Radar and Optical Remote Sensing of Crop Damage Attributed to Severe Weather in the Central United States

Bell, Jordan ; Gebremichael, Esayas ; Molthan, Andrew ; Schultz, Lori ; Meyer, Franz ; Shrestha, Suravi

关键词: SYNTHETIC APERTURE RADAR;    REMOTE SENSING;    HAIL;    INFRARED DETECTORS;    SHORT WAVE RADIATION;    FARM CROPS;    DAMAGE;    NORMALIZED DIFFERENCE VEGETATION INDEX;    THUNDERSTORMS;    TORNADOES;    STORMS;    COHERENCE COEFFICIENT;    CHANGE DETECTION;    CASE HISTORIES;    NEBRASKA;    UNITED STATES;   

RP-ID  :  MSFC-E-DAA-TN70831

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Damaging hail and wind from severe thunderstorms threatens agricultural areas annually, especially across the central United States where agriculture is prevalent. On average, these storms produce $160 to $580 million worth of damage in the US every year and contribute significantly to food prices, crop insurance, and agricultural related stocks. However, hail damage is not regularly ground-surveyed like tornadoes. Optical (visible, NIR (Near Infra-Red), and SWIR (Short-Wave Infra-Red) remote sensing techniques have been shown to successfully identify and monitor hail damage swaths. Techniques of identification and monitoring hail damage swaths from synthetic aperture radar (SAR) are currently unexplored. We hypothesize that hail-damaged cropland will exhibit lower power return than surrounding healthy vegetation due to changes in the geometry of the targets. Further analysis is needed to determine a threshold for future automated monitoring of hail damage swaths.