期刊
FRONTIERS IN REMOTE SENSING
卷 2, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/frsen.2021.724074
关键词
DISCOVR EPIC; Moon; phase function; clouds; vegetation
资金
- NASA DSCOVR project [80NSSC19K0762]
- Jet Propulsion Laboratory [1625837]
- NASA DSCOVR Science Team [80NSSC19K0771]
- NASA [NNG17HP01C]
EPIC on the DSCOVR satellite observes Earth from sunrise to sunset from the L1 point, but limited in the range of observed phase angles; deploying a similar instrument on the Moon's surface would offer more diverse observations.
The Earth Polychromatic Imaging Camera (EPIC) on the Deep Space Climate Observatory (DSCOVR) satellite observes the entire Sun-illuminated Earth from sunrise to sunset from the L1 Sun-Earth Lagrange point. The L1 location, however, confines the observed phase angles to & SIM;2 & DEG;-12 & DEG;, a nearly backscattering direction, precluding any information on the bidirectional surface reflectance factor (BRF) or cloud/aerosol phase function. Deploying an analog of EPIC on the Moon's surface would offer a unique opportunity to image the full range of Earth phases, including observing ocean/cloud glint reflection for different phase angles; monitoring of transient volcanic clouds; detection of circum-polar mesospheric and stratospheric clouds; estimating the surface BRF and full phase-angle integrated albedo; and monitoring of vegetation characteristics for different phase angles.
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