{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,29]],"date-time":"2026-05-29T20:00:27Z","timestamp":1780084827487,"version":"3.54.0"},"reference-count":50,"publisher":"Institute of Electrical and Electronics Engineers (IEEE)","issue":"4","license":[{"start":{"date-parts":[[2017,4,1]],"date-time":"2017-04-01T00:00:00Z","timestamp":1491004800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/ieeexplore.ieee.org\/Xplorehelp\/downloads\/license-information\/IEEE.html"}],"funder":[{"DOI":"10.13039\/501100000923","name":"Australian Research Council","doi-asserted-by":"publisher","award":["DP14"],"award-info":[{"award-number":["DP14"]}],"id":[{"id":"10.13039\/501100000923","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100006196","name":"Jet Propulsion Laboratory, California Institute of Technology, under a contract with NASA","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100006196","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IEEE Trans. Geosci. Remote Sensing"],"published-print":{"date-parts":[[2017,4]]},"DOI":"10.1109\/tgrs.2016.2631126","type":"journal-article","created":{"date-parts":[[2017,1,19]],"date-time":"2017-01-19T19:17:49Z","timestamp":1484853469000},"page":"1897-1914","source":"Crossref","is-referenced-by-count":77,"title":["Surface Soil Moisture Retrieval Using the L-Band Synthetic Aperture Radar Onboard the Soil Moisture Active\u2013Passive Satellite and Evaluation at Core Validation Sites"],"prefix":"10.1109","volume":"55","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1865-5617","authenticated-orcid":false,"given":"Seung-Bum","family":"Kim","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jakob J.","family":"van Zyl","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joel T.","family":"Johnson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matha","family":"Moghaddam","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leung","family":"Tsang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4093-8119","authenticated-orcid":false,"given":"Andreas","family":"Colliander","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Roy Scott","family":"Dunbar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas J.","family":"Jackson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sermsak","family":"Jaruwatanadilok","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Richard","family":"West","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8438-5662","authenticated-orcid":false,"given":"Aaron","family":"Berg","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Todd","family":"Caldwell","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael H.","family":"Cosh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David C.","family":"Goodrich","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stanley","family":"Livingston","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ernesto","family":"Lopez-Baeza","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tracy","family":"Rowlandson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marc","family":"Thibeault","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeffrey P.","family":"Walker","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dara","family":"Entekhabi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eni G.","family":"Njoku","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peggy E.","family":"O'Neill","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Simon H.","family":"Yueh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"263","reference":[{"key":"ref39","doi-asserted-by":"publisher","DOI":"10.5194\/hess-13-381-2009"},{"key":"ref38","doi-asserted-by":"publisher","DOI":"10.1109\/LGRS.2014.2381641"},{"key":"ref33","doi-asserted-by":"publisher","DOI":"10.1029\/2006WR005804"},{"key":"ref32","year":"0","journal-title":"Committee on Earth Observation Satellites (CEOS) Working Group on Calibration and Validation (WGCV) and Land Products Sub-Group of Committee on Earth Observation Satellites (CEOS) Working Group on Calibration and Validation (WGCV)"},{"key":"ref31","article-title":"Soil moisture active passive (SMAP) project radar backscatter calibration for the L1B_S0_LoRes and L1C_S0_HiRes validated level data products","author":"west","year":"2015"},{"key":"ref30","doi-asserted-by":"publisher","DOI":"10.1109\/JSTARS.2015.2493449"},{"key":"ref37","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2003.823288"},{"key":"ref36","doi-asserted-by":"publisher","DOI":"10.1002\/9781118116104.ch5"},{"key":"ref35","article-title":"SMAP L2\/L3 soil moisture product validation with core validation sites","author":"colliander","year":"0","journal-title":"Remote Sens Environ"},{"key":"ref34","first-page":"85","author":"colliander","year":"2014","journal-title":"SMAP L2-L4 Data Product CalVal Plan"},{"key":"ref28","doi-asserted-by":"publisher","DOI":"10.1109\/JPROC.2010.2043918"},{"key":"ref27","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2014.2373972"},{"key":"ref29","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2008.2004711"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2010.2040748"},{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2014.2364913"},{"key":"ref20","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.1983.350531"},{"key":"ref22","doi-asserted-by":"publisher","DOI":"10.1109\/JSTARS.2015.2505638"},{"key":"ref21","doi-asserted-by":"publisher","DOI":"10.1109\/JSTARS.2015.2469717"},{"key":"ref24","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2011.2172949"},{"key":"ref23","doi-asserted-by":"publisher","DOI":"10.1016\/0034-4257(95)00151-4"},{"key":"ref26","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2011.2173349"},{"key":"ref25","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2013.2250980"},{"key":"ref50","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-540-45310-9"},{"key":"ref10","doi-asserted-by":"publisher","DOI":"10.1109\/JSTARS.2012.2237162"},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.1016\/j.rse.2014.05.009"},{"key":"ref40","first-page":"56","article-title":"SMAP algorithm theoretical basis document: L2 & L3 radar soil moisture (active) products. Revision B","author":"kim","year":"2015"},{"key":"ref12","doi-asserted-by":"crossref","first-page":"2519","DOI":"10.1109\/TGRS.2009.2014944","article-title":"A time-series approach to estimate soil moisture using polarimetric radar data","volume":"47","author":"kim","year":"2009","journal-title":"IEEE Trans Geosci Remote Sens"},{"key":"ref13","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2008.2011617"},{"key":"ref14","doi-asserted-by":"publisher","DOI":"10.3390\/rs71215841"},{"key":"ref15","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2003.817200"},{"key":"ref16","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2008.920370"},{"key":"ref17","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2002.807008"},{"key":"ref18","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2011.2160549"},{"key":"ref19","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.1990.572925"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1109\/JSTARS.2010.2052916"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2011.2169454"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.1109\/LGRS.2009.2028441"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2017.2663768"},{"key":"ref8","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2008.917214"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.1109\/36.917912"},{"key":"ref49","article-title":"Soil moisture characterization of the valencia anchor station. Ground, aircraft measurements and simulations","author":"lopez-baeza","year":"0"},{"key":"ref9","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2014.2377714"},{"key":"ref46","doi-asserted-by":"publisher","DOI":"10.1016\/j.jhydrol.2016.03.060"},{"key":"ref45","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2013.2241774"},{"key":"ref48","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2012.2188532"},{"key":"ref47","doi-asserted-by":"crossref","first-page":"8","DOI":"10.1029\/2006WR005702","article-title":"Long-term meteorological and soil hydrology database, Walnut Gulch experimental watershed, Arizona, United States","volume":"44","author":"keefer","year":"2008","journal-title":"Water Resour Res"},{"key":"ref42","doi-asserted-by":"publisher","DOI":"10.1109\/JSTARS.2015.2424715"},{"key":"ref41","doi-asserted-by":"publisher","DOI":"10.1175\/2010JHM1223.1"},{"key":"ref44","doi-asserted-by":"publisher","DOI":"10.1029\/2012WR011976"},{"key":"ref43","first-page":"67","author":"chan","year":"2011","journal-title":"SMAP Radar Error Budget"}],"container-title":["IEEE Transactions on Geoscience and Remote Sensing"],"original-title":[],"link":[{"URL":"http:\/\/xplorestaging.ieee.org\/ielx7\/36\/7864502\/07827136.pdf?arnumber=7827136","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,1,12]],"date-time":"2022-01-12T16:19:52Z","timestamp":1642004392000},"score":1,"resource":{"primary":{"URL":"http:\/\/ieeexplore.ieee.org\/document\/7827136\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,4]]},"references-count":50,"journal-issue":{"issue":"4"},"URL":"https:\/\/doi.org\/10.1109\/tgrs.2016.2631126","relation":{},"ISSN":["0196-2892","1558-0644"],"issn-type":[{"value":"0196-2892","type":"print"},{"value":"1558-0644","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017,4]]}}}