TY - GEN
T1 - Mapping Transient Soil Moisture Post Rainstorm Events in Hyper-Arid Karst Environments Using Multi-Sensor Observations
AU - Normand, Jonathan C.L.
AU - Heggy, Essam
N1 - Publisher Copyright:
© 2021 IEEE
PY - 2021
Y1 - 2021
N2 - In hyper-arid areas, soil moisture controls surface dust emissivity, surface run-offs during flash floods, aquifers recharge, and soil induration, as well as the biological diversity of these extreme environments. Of particular interest is assessing the soil moisture spatial distribution after a rare rainstorm event in fractured karstic environments. Therefore, we use three different remote sensing methods to map the soil moisture change as well as the volumetric water content following a storm event in the hyper-arid, unvegetated, and karstic Qatar Peninsula: (1) C-band SENTINEL1 SAR backscatter intensity difference as well as its interferometric coherence, (2) Principal Component Analysis SENTINEL2-multispectral moisture index, and (3) L-band SMAP Level3 radiometer. Our results suggest that transient soil moisture spatial patterns with volumetric water content higher than 0.12 cm3/cm3 can persist longer than 48 hours following a major storm event with 50-100 mm precipitation in depressions. The above is a crucial step for assessing the origins and temporal evolution of soil moisture in Hyper-arid areas.
AB - In hyper-arid areas, soil moisture controls surface dust emissivity, surface run-offs during flash floods, aquifers recharge, and soil induration, as well as the biological diversity of these extreme environments. Of particular interest is assessing the soil moisture spatial distribution after a rare rainstorm event in fractured karstic environments. Therefore, we use three different remote sensing methods to map the soil moisture change as well as the volumetric water content following a storm event in the hyper-arid, unvegetated, and karstic Qatar Peninsula: (1) C-band SENTINEL1 SAR backscatter intensity difference as well as its interferometric coherence, (2) Principal Component Analysis SENTINEL2-multispectral moisture index, and (3) L-band SMAP Level3 radiometer. Our results suggest that transient soil moisture spatial patterns with volumetric water content higher than 0.12 cm3/cm3 can persist longer than 48 hours following a major storm event with 50-100 mm precipitation in depressions. The above is a crucial step for assessing the origins and temporal evolution of soil moisture in Hyper-arid areas.
KW - Interferometric coherence
KW - Multispectral
KW - Principal Component Analysis
KW - SAR Intensity
KW - Soil Moisture Variability
UR - https://www.scopus.com/pages/publications/85130042767
U2 - 10.1109/IGARSS47720.2021.9554442
DO - 10.1109/IGARSS47720.2021.9554442
M3 - Conference contribution
AN - SCOPUS:85130042767
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 6319
EP - 6322
BT - IGARSS 2021 - 2021 IEEE International Geoscience and Remote Sensing Symposium, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2021
Y2 - 12 July 2021 through 16 July 2021
ER -