6533b859fe1ef96bd12b757b

RESEARCH PRODUCT

Soil Moisture Retrieved From a Combined Optical and Passive Microwave Approach

Cristian MattarJ. C. Jiménez-muñozJosé A. SobrinoAndrés Santamaría-artigas

subject

GeographyEmissivityRadiative transferSoil scienceLand coverVegetationLeaf area indexWater contentNormalized Difference Vegetation IndexMicrowaveRemote sensing

description

Abstract With the current remote sensing technology developments, and in particular those at L-band (1.2–1.4 GHz) frequencies such as the Soil Moisture and Ocean Salinity and the Soil Moisture Active and Passive missions, new approaches concerning passive microwave and its combination with existing optical technologies have become of special interest for the estimation of surface soil moisture. One of these new approaches is the combination of optical and passive microwave data based on a semiempirical approach derived from the general radiative transfer equation. The objective of this chapter is to present some applications of the combined optical-passive microwave approaches over several spatial scales and land cover types. Additionally, the influences of vegetation indexes such as the leaf area index or the normalized difference vegetation index are also described. Finally, as a future perspective of the possible use of thermal infrared information such as land surface temperature or land surface emissivity rather than vegetation indexes is also commented on.

yearjournalcountryeditionlanguage
2016-01-01
https://doi.org/10.1016/b978-0-12-803388-3.00007-3