TY - GEN
T1 - L-BAND INSAR DEPTH RETRIEVAL DURING THE NASA SNOWEX 2020 CAMPAIGN
T2 - 2021 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2021
AU - Marshall, H. P.
AU - Deeb, Elias
AU - Forster, Rick
AU - Vuyovich, Carrie
AU - Elder, Kelly
AU - Hiemstra, Chris
AU - Lund, Jewell
N1 - Publisher Copyright:
© 2021 IEEE
PY - 2021
Y1 - 2021
N2 - As part of the NASA SnowEx 2020 campaign, we performed a time series experiment with NASA's UAVSAR, an airborne L-band InSAR, over 13 sites across 5 states. Six flights were performed (December-March), capturing a wide range of snow conditions. On Grand Mesa, Colorado, two of the InSAR overflights were well aligned with two airborne lidar surveys. We show that in a 4 km2 wind exposed area on the west end of Grand Mesa, the measured change in phase can be used to estimate change in snow depth. In this region we observed both scouring and drifting, with a dynamic range of ± 20 cm. We use the measured surface density, change in phase, and local incidence angle to estimate change in snow depth over approximately a 2 week period, with a RMSD of 4.7cm depth, and 0.9cm SWE. This technique shows promise in open regions in dry snow conditions, and may be a useful component of a global snow satellite concept.
AB - As part of the NASA SnowEx 2020 campaign, we performed a time series experiment with NASA's UAVSAR, an airborne L-band InSAR, over 13 sites across 5 states. Six flights were performed (December-March), capturing a wide range of snow conditions. On Grand Mesa, Colorado, two of the InSAR overflights were well aligned with two airborne lidar surveys. We show that in a 4 km2 wind exposed area on the west end of Grand Mesa, the measured change in phase can be used to estimate change in snow depth. In this region we observed both scouring and drifting, with a dynamic range of ± 20 cm. We use the measured surface density, change in phase, and local incidence angle to estimate change in snow depth over approximately a 2 week period, with a RMSD of 4.7cm depth, and 0.9cm SWE. This technique shows promise in open regions in dry snow conditions, and may be a useful component of a global snow satellite concept.
KW - InSAR
KW - Lidar
KW - Radar
KW - Snow
UR - http://www.scopus.com/inward/record.url?scp=85118197068&partnerID=8YFLogxK
U2 - 10.1109/IGARSS47720.2021.9553852
DO - 10.1109/IGARSS47720.2021.9553852
M3 - Conference contribution
AN - SCOPUS:85118197068
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 625
EP - 627
BT - IGARSS 2021 - 2021 IEEE International Geoscience and Remote Sensing Symposium, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 12 July 2021 through 16 July 2021
ER -