6533b82ffe1ef96bd12948df

RESEARCH PRODUCT

Estimation of vegetation loss coefficients and canopy penetration depths from SMAP radiometer and IceSAT lidar data

Maria PilesMoritz LinkMartin BaurD. EntekhabiThomas JagdhuberAnita Fink

subject

Canopyloss coefficientsLidarRadiometer010504 meteorology & atmospheric sciencesSingle-scattering albedoAttenuation0208 environmental biotechnologyFOS: Physical sciences02 engineering and technologyPenetration (firestop)SMAP15. Life on land01 natural sciences020801 environmental engineeringPhysics - Atmospheric and Oceanic PhysicsLidarGeographyPenetration depthAtmospheric and Oceanic Physics (physics.ao-ph)Penetration depthWater contentICESat0105 earth and related environmental sciencesRemote sensing

description

In this study the framework of the τ — ω model is used to derive vegetation loss coefficients and canopy penetration depths from SMAP multi-temporal retrievals of vegetation optical depth, single scattering albedo and ICESat lidar vegetation heights. The vegetation loss coefficients serve as a global indicator of how strong absorption and scattering processes attenuate L-band microwave radiation. By inverting the vegetation loss coefficients, penetration depths into the canopy can be obtained, which are displayed for the global forest reservoirs. A simple penetration index is formed combining vegetation heights and penetration depth estimates. The distribution and level of this index reveal that for densely forested areas in the tropics the soil signal is attenuated considerably, and this attenuation must be carefully accounted for in soil moisture retrieval algorithms.

yearjournalcountryeditionlanguage
2017-01-01
10.1109/igarss.2017.8127602http://arxiv.org/abs/2012.03318