Soil Moisture Retrieval from Active Spaceborne Microwave Observations: An Evaluation of Current Techniques

Remote Sensing

Brian W. Barrett²  Edward Dwyer¹ 

[1] Coastal & Marine Resources Centre (CMRC), University College Cork (UCC), Irish Naval Base, Haulbowline, Cobh, Co. Cork, Ireland; E-Mail:;Department of Zoology, Ecology & Plant Science (ZEPS), University College Cork (UCC), Butler Building, Distillery Fields, North Mall, Cork, Ireland; E-Mail:

关键词: soil moisture;    active microwave remote sensing;    retrieval approaches;    change detection;   

DOI  :  10.3390/rs1030210

来源: mdpi

【 摘 要 】

The importance of land surface-atmosphere interactions, principally the effects of soil moisture, on hydrological, meteorological, and ecological processes has gained widespread recognition over recent decades. Its high spatial and temporal variability however, makes soil moisture a difficult parameter to measure and monitor effectively using traditional methods. Microwave remote sensing technology has demonstrated the potential to map and monitor relative soil moisture changes over large areas at regular intervals in time and also the opportunity of measuring, through inverse modelling, absolute soil moisture values. This ability has been demonstrated under a variety of topographic and land cover conditions using both active and passive microwave instruments. The purpose of this paper is to review the current status of soil moisture determination from active microwave remote sensing systems and to highlight the key areas of research that will have to be addressed to achieve routine use of the proposed retrieval approaches.

【 授权许可】

CC BY   
© 2009 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.