Multi-frequency radiometer-based soil moisture retrieval algorithm parametrization using in situ validation sites

Ying Gao, Andreas Colliander, Mariko S. Burgin, Jeffrey P. Walker, Chunsik Chae, Emmanuel Dinnat, Michael H. Cosh

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

Abstract

Soil moisture is of great importance to disciplines such as agriculture, hydrology and meteorology. Over the past three decades, passive microwave remote sensing has been demonstrated as a promising tool for global soil moisture estimation and several missions have been launched over the past years. This study focuses on the parametrization of the tau-omega model at L-, C- and X-band for the Yanco site in New South Wales, Australia, and compares the resulting forward-simulated brightness temperatures with two missions: NASA's Soil Moisture Active Passive (SMAP) mission and JAXA's Advanced Microwave Scanning Radiometer 2 (AMSR2) onboard the GCOM-W mission. Preliminary comparison of SMAP and AMSR2 brightness temperatures and forward-simulated brightness temperatures at the Yanco site showed a generally good agreement and higher correlation for the vertical polarization. This is consistent with other studies analyzing the SMAP soil moisture products. Simultaneous calibration of the vegetation parameter b and roughness parameter h was also performed for the L-, C- and X-band data sets, respectively, at both horizontal and vertical polarizations.

Original languageEnglish
Title of host publication2017 IEEE International Geoscience and Remote Sensing Symposium
Subtitle of host publicationInternational Cooperation for Global Awareness, IGARSS 2017 - Proceedings
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages3945-3948
Number of pages4
ISBN (Electronic)9781509049516
DOIs
Publication statusPublished - 1 Dec 2017
EventIEEE International Geoscience and Remote Sensing Symposium 2017 - Fort Worth, United States of America
Duration: 23 Jul 201728 Jul 2017
Conference number: 37th
https://www2.securecms.com/IGARSS2017/Default.asp

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)
Volume2017-July

Conference

ConferenceIEEE International Geoscience and Remote Sensing Symposium 2017
Abbreviated titleIGARSS 2017
CountryUnited States of America
CityFort Worth
Period23/07/1728/07/17
Internet address

Keywords

  • AMSR2
  • Brightness temperature
  • Passive microwave
  • SMAP
  • Soil moisture

Cite this

Gao, Y., Colliander, A., Burgin, M. S., Walker, J. P., Chae, C., Dinnat, E., & Cosh, M. H. (2017). Multi-frequency radiometer-based soil moisture retrieval algorithm parametrization using in situ validation sites. In 2017 IEEE International Geoscience and Remote Sensing Symposium: International Cooperation for Global Awareness, IGARSS 2017 - Proceedings (pp. 3945-3948). [8127863] (International Geoscience and Remote Sensing Symposium (IGARSS); Vol. 2017-July). IEEE, Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/IGARSS.2017.8127863