COSMIC-RAY NEUTRON PROBES FOR SATELLITE SOIL MOISTURE VALIDATION

Montzka, Carsten and Bogena, Heye R and Zreda, Marek and Monerris, Alessandra and Morrison, Ross and Muddu, Sekhar and Vereecken, Harry (2017) COSMIC-RAY NEUTRON PROBES FOR SATELLITE SOIL MOISTURE VALIDATION. In: IEEE International Geoscience & Remote Sensing Symposium, JUL 23-28, 2017, Fort Worth, TX, pp. 3957-3960.

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Abstract

Low resolution satellite products are often validated by point-scale in-situ soil moisture measurements from TDR/FDR devices, where the scale mismatch limits the quality of validation efforts in heterogeneous regions. In Cosmic Ray Neutron Probes (CRNP) provide area-average soil moisture within a 150 - 250 m radius footprint, so that they are able to fill the scale gap between both systems. In this study we evaluate differences and communalities between CRNP observations, and surface soil moisture products from the Advanced Microwave Scanning Radiometer 2 (AMSR2), the METOP-A/B Advanced Scatterometer (ASCAT), the Soil Moisture Active and Passive (SMAP), the Soil Moisture and Ocean Salinity (SMOS), as well as simulations from the Global Land Data Assimilation System Version 2 (GLDAS2). CRNPs within the Rur catchment in Germany have been selected for comparison. Standard validation scores identified SMAP to provide a high accuracy soil moisture product with low noise or uncertainties as compared to CRNPs.

Item Type:	Conference Proceedings
Series.:	IEEE International Symposium on Geoscience and Remote Sensing IGARSS
Publisher:	IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Additional Information:	Copy right for this article belong to IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	18 Apr 2018 18:22
Last Modified:	18 Apr 2018 18:22
URI:	http://eprints.iisc.ac.in/id/eprint/59639

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