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Seasonal Dependence of SMAP Radiometer-Based Soil Moisture Performance as Observed over Core Validation Sites

  • A. Colliander
  • , T. J. Jackson
  • , S. K. Chan
  • , P. O'Neill
  • , R. Bindlish
  • , M. H. Cosh
  • , T. Caldwell
  • , J. P. Walker
  • , A. Berg
  • , H. McNairn
  • , M. Thibeault
  • , J. Martinez-Fernandez
  • , K. H. Jensen
  • , J. Asanuma
  • , M. S. Seyfried
  • , D. D. Bosch
  • , P. J. Starks
  • , C. Holifield Collins
  • , J. H. Prueger
  • , Z. Su
    • S. H. Yueh

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

The NASA SMAP (Soil Moisture Active Passive) mission provides a global coverage of soil moisture measurements based on its L-band microwave radiometer every 2-3 days at about 40 km resolution. The soil moisture retrieval algorithms model the brightness temperature as a function of soil moisture, surface conditions and vegetation. External data sources inform the algorithms about the surface conditions and vegetation, which enable the retrieval of soil moisture. The inversion process contains uncertainties related to radiometer measurements, forward model assumptions and ancillary data sources. This study focuses on the uncertainties that depend on the seasonal evolution of the surface conditions and vegetation. The study compares the SMAP and core validation site (CVS) soil moisture values over a period of four years to extract the evolution of performance metrics over time. The analysis showed that most CVS that include managed agriculture exhibit significant time-dependent seasonal bias. This bias was linked to seasonal temperature cycle, which is a proxy to several features that can cause seasonally dependent errors in the SMAP product.

Original languageEnglish
Title of host publication2019 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2019 - Proceedings
Number of pages4
PublisherInstitute of Electrical and Electronics Engineers Inc.
Publication date2019
Pages5320-5323
Article number8899007
ISBN (Electronic)9781538691540
DOIs
Publication statusPublished - 2019
Event39th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2019 - Yokohama, Japan
Duration: 28 Jul 2019 → 2 Aug 2019

Conference

Conference39th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2019
Country/TerritoryJapan
CityYokohama
Period28/07/2019 → 02/08/2019
SeriesInternational Geoscience and Remote Sensing Symposium (IGARSS)

Funding

1227 10.1109/IGARSS.2019.8899007 0b0000648b954c2a Active orig-research F T F F X F T F Publish IEEE The NASA SMAP (Soil Moisture Active Passive) mission provides a global coverage of soil moisture measurements based on its L-band microwave radiometer every 2-3 days at about 40 km resolution. The soil moisture retrieval algorithms model the brightness temperature as a function of soil moisture, surface conditions and vegetation. External data sources inform the algorithms about the surface conditions and vegetation, which enable the retrieval of soil moisture. The inversion process contains uncertainties related to radiometer measurements, forward model assumptions and ancillary data sources. This study focuses on the uncertainties that depend on the seasonal evolution of the surface conditions and vegetation. The study compares the SMAP and core validation site (CVS) soil moisture values over a period of four years to extract the evolution of performance metrics over time. The analysis showed that most CVS that include managed agriculture exhibit significant time-dependent seasonal bias. This bias was linked to seasonal temperature cycle, which is a proxy to several features that can cause seasonally dependent errors in the SMAP product. 117507772 1 Colliander, A. A. Colliander A. Colliander California Institute of Technology,Jet Propulsion Laboratory,,Pasadena,CA,USA 214997077 California Institute of Technology Jet Propulsion Laboratory Pasadena CA USA Author 117507781 10 McNairn, H. H. McNairn H. McNairn Agriculture and Agri-food Canada,,,,,Canada 214997086 Agriculture and Agri-food Canada Canada Author 117507782 11 Thibeault, M. M. Thibeault M. Thibeault Comisión Nacional de Actividades Espaciales (CONAE),,,,,Argentina 214997087 Comisión Nacional de Actividades Espaciales (CONAE) Argentina Author 117507783 12 Martinez-Fernandez, J. J. Martinez-Fernandez J. J. Martinez-Fernandez Martínez-Fernández Universidad de Salamanca,Instituto Hispano Luso de Investigaciones Agrarias (CIALE),,,,Spain 214997088 Universidad de Salamanca Instituto Hispano Luso de Investigaciones Agrarias (CIALE) Spain Author 117507784 13 Jensen, K.H. K.H. Jensen K.H. Jensen University of Copenhagen,,,,,Denmark 214997089 University of Copenhagen Denmark Author 117507785 14 Asanuma, J. J. Asanuma J. Asanuma University of Tsukuba,,,Tsukuba,,Japan 214997090 University of Tsukuba Tsukuba Japan Author 117507786 15 Seyfried, M.S. M.S. Seyfried M.S. Seyfried USDA ARS Northwest Watershed Management Research,,,Boise,ID,USA 214997091 USDA ARS Northwest Watershed Management Research Boise ID USA Author 117507787 16 Bosch, D.D. D.D. Bosch D.D. Bosch USDA ARS Southeast Watershed Research,,,Tifton,GA,USA 214997092 USDA ARS Southeast Watershed Research Tifton GA USA Author 117507788 17 Starks, P.J. P.J. Starks P.J. Starks USDA ARS Grazinglands Research Laboratory,,,El Reno,OK,USA 214997093 USDA ARS Grazinglands Research Laboratory El Reno OK USA Author 117507789 18 Holifield Collins, C. C. Holifield Collins C. Holifield Collins USDA ARS Southwest Watershed Research,,,Tucson,AZ,USA 214997094 USDA ARS Southwest Watershed Research Tucson AZ USA Author 117507790 19 Prueger, J.H. J.H. Prueger J.H. Prueger USDA ARS National Laboratory for Agriculture and the Environment,,,Ames,IA,USA 214997095 USDA ARS National Laboratory for Agriculture and the Environment Ames IA USA Author 117507773 2 Jackson, T.J. T.J. Jackson T.J. Jackson USDA ARS Hydrology and Remote Sensing Laboratory,,,Beltsville,MD,USA 214997078 USDA ARS Hydrology and Remote Sensing Laboratory Beltsville MD USA Author 117507791 20 Su, Z. Z. Su Z. Su University of Twente,,,,,the Netherlands 214997096 University of Twente the Netherlands Author 117507792 21 Yueh, S. H. S. H. Yueh S. H. Yueh California Institute of Technology,Jet Propulsion Laboratory,,Pasadena,CA,USA 214997097 California Institute of Technology Jet Propulsion Laboratory Pasadena CA USA Author 117507774 3 Chan, S.K. S.K. Chan S.K. Chan California Institute of Technology,Jet Propulsion Laboratory,,Pasadena,CA,USA 214997079 California Institute of Technology Jet Propulsion Laboratory Pasadena CA USA Author 117507775 4 O'Neill, P. P. O'Neill P. P. O'Neill O’Neill NASA Goddard Space Flight Center,,,Greenbelt,MD,USA 214997080 NASA Goddard Space Flight Center Greenbelt MD USA Author 117507776 5 Bindlish, R. R. Bindlish R. Bindlish NASA Goddard Space Flight Center,,,Greenbelt,MD,USA 214997081 NASA Goddard Space Flight Center Greenbelt MD USA Author 117507777 6 Cosh, M. H. M. H. Cosh M. H. Cosh USDA ARS Hydrology and Remote Sensing Laboratory,,,Beltsville,MD,USA 214997082 USDA ARS Hydrology and Remote Sensing Laboratory Beltsville MD USA Author 117507778 7 Caldwell, T. T. Caldwell T. Caldwell University of Texas at Austin,,,Texas,,USA 214997083 University of Texas at Austin Texas USA Author 117507779 8 Walker, J. P. J. P. Walker J. P. Walker Monash University,,,,,Australia 214997084 Monash University Australia Author 117507780 9 Berg, A. A. Berg A. Berg University of Guelph,,,,,Canada 214997085 University of Guelph Canada Author 2019 July 2019 11 13 540407 08899007.pdf 5320-5323 8899007 Soil Moisture SMAP core validation site

Keywords

  • core validation site
  • SMAP
  • Soil Moisture

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