Assessment of Version 4 of the SMAP Passive Soil Moisture

Peggy O'Neill; S. Chan; R. Bindlish; T.  Jackson; J. Chaubell; J. Piepmeijer; A. Dunbar; M. Cosh; A. Colliander; F. Chen; D. Entekhabi; S. Yeuh; T. Caldwell; Jeffrey Walker; X. Wu; A. Berg; T. Rowlandson; T. Pacheco; H. McNairn; M. Thibeault; J. Martinez-Fernandez; A. Gonzalez-Zamora; E. Lopez-Beaza; F. Uldall; M. Seyfried; David Bosch; P.J. Starks; Chandra D. Holifield Collins; J.H. Prueger; Z. Su; R. van der Velde; J. Asanuma; E. Palecki; E. Small; M. Zreda; J.C. Calvet; C. Crow; Y.H. Kerr

Assessment of Version 4 of the SMAP Passive Soil Moisture

Peggy O'Neill, S. Chan, R. Bindlish, T. Jackson, J. Chaubell, J. Piepmeijer, A. Dunbar, M. Cosh, A. Colliander, F. Chen, D. Entekhabi, S. Yeuh, T. Caldwell, Jeffrey Walker, X. Wu, A. Berg, T. Rowlandson, T. Pacheco, H. McNairn, M. ThibeaultJ. Martinez-Fernandez, A. Gonzalez-Zamora, E. Lopez-Beaza, F. Uldall, M. Seyfried, David Bosch, P.J. Starks, Chandra D. Holifield Collins, J.H. Prueger, Z. Su, R. van der Velde, J. Asanuma, E. Palecki, E. Small, M. Zreda, J.C. Calvet, C. Crow, Y.H. Kerr

Department of Water Resources

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

7 Citations (Scopus)

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Abstract

NASAs Soil Moisture Active Passive (SMAP) mission launched on January 31, 2015 into a sun-synchronous 6 am6 pm orbit with an objective to produce global mapping of high-resolution soil moisture and freeze-thaw state every 2-3 days. The SMAP radiometer began acquiring routine science data on March 31, 2015 and continues to operate nominally. SMAPs radiometer-derived standard soil moisture product (L2SMP) provides soil moisture estimates posted on a 36-km fixed Earth grid using brightness temperature observations and ancillary data. A beta quality version of L2SMP was released to the public in October, 2015, Version 3 validated L2SMP soil moisture data were released in May, 2016, and Version 4 L2SMP data were released in December, 2016. Version 4 data are processed using the same soil moisture retrieval algorithms as previous versions, but now include retrieved soil moisture from both the 6 am descending orbits and the 6 pm ascending orbits. Validation of 19 months of the standard L2SMP product was done for both AM and PM retrievals using in situ measurements from global core calval sites. Accuracy of the soil moisture retrievals averaged over the core sites showed that SMAP accuracy requirements are being met.

Original language	English
Title of host publication	37th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2017
Subtitle of host publication	23-28 July 2017, Fort Worth, TX, USA
Publisher	NASA, Goddard Space Flight Center
Number of pages	4
Publication status	Published - 2017

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O'Neill, P., Chan, S., Bindlish, R., Jackson, T., Chaubell, J., Piepmeijer, J., Dunbar, A., Cosh, M., Colliander, A., Chen, F., Entekhabi, D., Yeuh, S., Caldwell, T., Walker, J., Wu, X., Berg, A., Rowlandson, T., Pacheco, T., McNairn, H., ... Kerr, Y. H. (2017). Assessment of Version 4 of the SMAP Passive Soil Moisture. In 37th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2017: 23-28 July 2017, Fort Worth, TX, USA NASA, Goddard Space Flight Center. https://ntrs.nasa.gov/search.jsp?R=20170007421

@inproceedings{ad37b0d17ed546a7bfe94ac29011856a,

title = "Assessment of Version 4 of the SMAP Passive Soil Moisture",

abstract = "NASAs Soil Moisture Active Passive (SMAP) mission launched on January 31, 2015 into a sun-synchronous 6 am6 pm orbit with an objective to produce global mapping of high-resolution soil moisture and freeze-thaw state every 2-3 days. The SMAP radiometer began acquiring routine science data on March 31, 2015 and continues to operate nominally. SMAPs radiometer-derived standard soil moisture product (L2SMP) provides soil moisture estimates posted on a 36-km fixed Earth grid using brightness temperature observations and ancillary data. A beta quality version of L2SMP was released to the public in October, 2015, Version 3 validated L2SMP soil moisture data were released in May, 2016, and Version 4 L2SMP data were released in December, 2016. Version 4 data are processed using the same soil moisture retrieval algorithms as previous versions, but now include retrieved soil moisture from both the 6 am descending orbits and the 6 pm ascending orbits. Validation of 19 months of the standard L2SMP product was done for both AM and PM retrievals using in situ measurements from global core calval sites. Accuracy of the soil moisture retrievals averaged over the core sites showed that SMAP accuracy requirements are being met.",

author = "Peggy O'Neill and S. Chan and R. Bindlish and T. Jackson and J. Chaubell and J. Piepmeijer and A. Dunbar and M. Cosh and A. Colliander and F. Chen and D. Entekhabi and S. Yeuh and T. Caldwell and Jeffrey Walker and X. Wu and A. Berg and T. Rowlandson and T. Pacheco and H. McNairn and M. Thibeault and J. Martinez-Fernandez and A. Gonzalez-Zamora and E. Lopez-Beaza and F. Uldall and M. Seyfried and David Bosch and P.J. Starks and {Holifield Collins}, {Chandra D.} and J.H. Prueger and Z. Su and {van der Velde}, R. and J. Asanuma and E. Palecki and E. Small and M. Zreda and J.C. Calvet and C. Crow and Y.H. Kerr",

year = "2017",

language = "English",

booktitle = "37th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2017",

publisher = "NASA, Goddard Space Flight Center",

}

O'Neill, P, Chan, S, Bindlish, R, Jackson, T, Chaubell, J, Piepmeijer, J, Dunbar, A, Cosh, M, Colliander, A, Chen, F, Entekhabi, D, Yeuh, S, Caldwell, T, Walker, J, Wu, X, Berg, A, Rowlandson, T, Pacheco, T, McNairn, H, Thibeault, M, Martinez-Fernandez, J, Gonzalez-Zamora, A, Lopez-Beaza, E, Uldall, F, Seyfried, M, Bosch, D, Starks, PJ, Holifield Collins, CD, Prueger, JH, Su, Z , van der Velde, R, Asanuma, J, Palecki, E, Small, E, Zreda, M, Calvet, JC, Crow, C & Kerr, YH 2017, Assessment of Version 4 of the SMAP Passive Soil Moisture. in 37th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2017: 23-28 July 2017, Fort Worth, TX, USA. NASA, Goddard Space Flight Center. <https://ntrs.nasa.gov/search.jsp?R=20170007421>

Assessment of Version 4 of the SMAP Passive Soil Moisture. / O'Neill, Peggy; Chan, S.; Bindlish, R. et al.
37th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2017: 23-28 July 2017, Fort Worth, TX, USA. NASA, Goddard Space Flight Center, 2017.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Assessment of Version 4 of the SMAP Passive Soil Moisture

AU - O'Neill, Peggy

AU - Chan, S.

AU - Bindlish, R.

AU - Jackson, T.

AU - Chaubell, J.

AU - Piepmeijer, J.

AU - Dunbar, A.

AU - Cosh, M.

AU - Colliander, A.

AU - Chen, F.

AU - Entekhabi, D.

AU - Yeuh, S.

AU - Caldwell, T.

AU - Walker, Jeffrey

AU - Wu, X.

AU - Berg, A.

AU - Rowlandson, T.

AU - Pacheco, T.

AU - McNairn, H.

AU - Thibeault, M.

AU - Martinez-Fernandez, J.

AU - Gonzalez-Zamora, A.

AU - Lopez-Beaza, E.

AU - Uldall, F.

AU - Seyfried, M.

AU - Bosch, David

AU - Starks, P.J.

AU - Holifield Collins, Chandra D.

AU - Prueger, J.H.

AU - Su, Z.

AU - van der Velde, R.

AU - Asanuma, J.

AU - Palecki, E.

AU - Small, E.

AU - Zreda, M.

AU - Calvet, J.C.

AU - Crow, C.

AU - Kerr, Y.H.

PY - 2017

Y1 - 2017

N2 - NASAs Soil Moisture Active Passive (SMAP) mission launched on January 31, 2015 into a sun-synchronous 6 am6 pm orbit with an objective to produce global mapping of high-resolution soil moisture and freeze-thaw state every 2-3 days. The SMAP radiometer began acquiring routine science data on March 31, 2015 and continues to operate nominally. SMAPs radiometer-derived standard soil moisture product (L2SMP) provides soil moisture estimates posted on a 36-km fixed Earth grid using brightness temperature observations and ancillary data. A beta quality version of L2SMP was released to the public in October, 2015, Version 3 validated L2SMP soil moisture data were released in May, 2016, and Version 4 L2SMP data were released in December, 2016. Version 4 data are processed using the same soil moisture retrieval algorithms as previous versions, but now include retrieved soil moisture from both the 6 am descending orbits and the 6 pm ascending orbits. Validation of 19 months of the standard L2SMP product was done for both AM and PM retrievals using in situ measurements from global core calval sites. Accuracy of the soil moisture retrievals averaged over the core sites showed that SMAP accuracy requirements are being met.

AB - NASAs Soil Moisture Active Passive (SMAP) mission launched on January 31, 2015 into a sun-synchronous 6 am6 pm orbit with an objective to produce global mapping of high-resolution soil moisture and freeze-thaw state every 2-3 days. The SMAP radiometer began acquiring routine science data on March 31, 2015 and continues to operate nominally. SMAPs radiometer-derived standard soil moisture product (L2SMP) provides soil moisture estimates posted on a 36-km fixed Earth grid using brightness temperature observations and ancillary data. A beta quality version of L2SMP was released to the public in October, 2015, Version 3 validated L2SMP soil moisture data were released in May, 2016, and Version 4 L2SMP data were released in December, 2016. Version 4 data are processed using the same soil moisture retrieval algorithms as previous versions, but now include retrieved soil moisture from both the 6 am descending orbits and the 6 pm ascending orbits. Validation of 19 months of the standard L2SMP product was done for both AM and PM retrievals using in situ measurements from global core calval sites. Accuracy of the soil moisture retrievals averaged over the core sites showed that SMAP accuracy requirements are being met.

M3 - Conference contribution

BT - 37th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2017

PB - NASA, Goddard Space Flight Center

ER -

Assessment of Version 4 of the SMAP Passive Soil Moisture

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