Cosmic-ray neutron probes for satellite soil moisture validation

Carsten Montzka, Heye R. Bogena, Marek Zreda, Alessandra Monerris, Ross Morrison, Sekhar Muddu, Harry Vereecken

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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.

Original languageEnglish (US)
Title of host publication2017 IEEE International Geoscience and Remote Sensing Symposium
Subtitle of host publicationInternational Cooperation for Global Awareness, IGARSS 2017 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)9781509049516
StatePublished - Dec 1 2017
Event37th Annual IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2017 - Fort Worth, United States
Duration: Jul 23 2017Jul 28 2017

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)


Other37th Annual IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2017
Country/TerritoryUnited States
CityFort Worth


  • AMSR2
  • Cosmic ray neutron probes
  • GLDAS2
  • SMAP
  • SMOS
  • Soil moisture

ASJC Scopus subject areas

  • Computer Science Applications
  • General Earth and Planetary Sciences


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