{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T17:35:05Z","timestamp":1777484105133,"version":"3.51.4"},"reference-count":64,"publisher":"Institute of Electrical and Electronics Engineers (IEEE)","issue":"10","license":[{"start":{"date-parts":[[2021,10,1]],"date-time":"2021-10-01T00:00:00Z","timestamp":1633046400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/ieeexplore.ieee.org\/Xplorehelp\/downloads\/license-information\/IEEE.html"},{"start":{"date-parts":[[2021,10,1]],"date-time":"2021-10-01T00:00:00Z","timestamp":1633046400000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-029"},{"start":{"date-parts":[[2021,10,1]],"date-time":"2021-10-01T00:00:00Z","timestamp":1633046400000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-037"}],"funder":[{"DOI":"10.13039\/100006919","name":"Massachusetts Institute of Technology (MIT)-Germany Seed Fund \u201cGlobal Water Cycle and Environmental Monitoring using Active and Passive Satellite-based Microwave Instruments.\u201d","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100006919","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IEEE Trans. Geosci. Remote Sensing"],"published-print":{"date-parts":[[2021,10]]},"DOI":"10.1109\/tgrs.2020.3035204","type":"journal-article","created":{"date-parts":[[2020,11,25]],"date-time":"2020-11-25T01:15:49Z","timestamp":1606266949000},"page":"8182-8194","source":"Crossref","is-referenced-by-count":6,"title":["Simultaneous Retrieval of Surface Roughness Parameters for Bare Soils From Combined Active\u2013Passive Microwave SMAP Observations"],"prefix":"10.1109","volume":"59","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1188-5313","authenticated-orcid":false,"given":"Anke","family":"Fluhrer","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1760-2425","authenticated-orcid":false,"given":"Thomas","family":"Jagdhuber","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9963-0488","authenticated-orcid":false,"given":"Ruzbeh","family":"Akbar","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2596-8670","authenticated-orcid":false,"given":"Peggy E.","family":"O'Neill","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8362-4761","authenticated-orcid":false,"given":"Dara","family":"Entekhabi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"263","reference":[{"key":"ref39","article-title":"SMAP L3 radiometer northern hemisphere daily 36 km EASE-grid freeze\/thaw state, version 1. Global projection","author":"xu","year":"2016"},{"key":"ref38","doi-asserted-by":"publisher","DOI":"10.1016\/j.rse.2017.06.037"},{"key":"ref33","article-title":"SMAP handbook","author":"entekhabi","year":"2014"},{"key":"ref32","author":"fung","year":"1994","journal-title":"Microwave Scattering and Emission Models and Their Applications"},{"key":"ref31","doi-asserted-by":"publisher","DOI":"10.1109\/36.843040"},{"key":"ref30","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.1987.289860"},{"key":"ref37","article-title":"SMAP L3 radiometer global daily 36 km EASE-grid soil moisture, version 4. Global projection","author":"o\u2019neill","year":"2016"},{"key":"ref36","author":"chan","year":"2016","journal-title":"SMAP LIC Radiometer Half-Orbit 36 km EASE-Grid Brightness Temperatures Version 3 Global Projection"},{"key":"ref35","year":"2015","journal-title":"Dataset SMAP_L1B_S0_LoRes_V2 Retrieved from ASF DAAC 7"},{"key":"ref34","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2017.2688403"},{"key":"ref60","doi-asserted-by":"publisher","DOI":"10.1016\/j.biosystemseng.2005.04.004"},{"key":"ref62","doi-asserted-by":"publisher","DOI":"10.1007\/s40333-013-0246-z"},{"key":"ref61","doi-asserted-by":"publisher","DOI":"10.1016\/j.rse.2011.10.024"},{"key":"ref63","doi-asserted-by":"publisher","DOI":"10.1109\/IGARSS.2018.8519563"},{"key":"ref28","doi-asserted-by":"publisher","DOI":"10.1029\/JC086iC06p05277"},{"key":"ref64","doi-asserted-by":"publisher","DOI":"10.1016\/j.rse.2005.06.004"},{"key":"ref27","doi-asserted-by":"publisher","DOI":"10.1029\/JC087iC13p11229"},{"key":"ref29","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2012.2226995"},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1109\/JSTARS.2014.2372031"},{"key":"ref1","doi-asserted-by":"publisher","DOI":"10.5194\/hess-13-381-2009"},{"key":"ref20","article-title":"Soil moisture active passive (SMAP). Algorithm theoretical basis document L2 & L3 radar\/radiometer soil moisture (active\/passive) data products","author":"entekhabi","year":"2014"},{"key":"ref22","author":"ulaby","year":"1982","journal-title":"Microwave Remote Sensing Active and Passive Radar Remote Sensing and Surface Scattering and Emission Theory"},{"key":"ref21","first-page":"205","article-title":"Synergism of active and passive microwave data for estimating bare soil surface moisture","author":"saatchi","year":"1993","journal-title":"Proc ESA\/NASA Int Workshop Passive Microw Remote Sens Res Related Land-Atmos Interact"},{"key":"ref24","doi-asserted-by":"publisher","DOI":"10.1016\/j.rse.2017.01.024"},{"key":"ref23","doi-asserted-by":"publisher","DOI":"10.1016\/j.rse.2006.10.014"},{"key":"ref26","doi-asserted-by":"publisher","DOI":"10.1109\/36.763303"},{"key":"ref25","doi-asserted-by":"publisher","DOI":"10.3390\/s8074213"},{"key":"ref50","doi-asserted-by":"publisher","DOI":"10.1117\/1.3663567"},{"key":"ref51","doi-asserted-by":"publisher","DOI":"10.1088\/0022-3727\/22\/9\/001"},{"key":"ref59","doi-asserted-by":"publisher","DOI":"10.1002\/2016RG000543"},{"key":"ref58","doi-asserted-by":"publisher","DOI":"10.3390\/rs71013626"},{"key":"ref57","first-page":"137","article-title":"Microwave response of rough surfaces with autocorrelation functions, RMS heights and correlation lengths using active remote sensing","volume":"40","author":"gupta","year":"2011","journal-title":"Indian J Radio Space Phys"},{"key":"ref56","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2007.898092"},{"key":"ref55","doi-asserted-by":"publisher","DOI":"10.1109\/LGRS.2009.2028441"},{"key":"ref54","article-title":"Regridded harmonized world soil database v1.2. Data set","author":"wieder","year":"2014"},{"key":"ref53","article-title":"Ancillary data report: Soil attributes","author":"das","year":"2013"},{"key":"ref52","year":"2018","journal-title":"Bureau of Meteorology"},{"key":"ref10","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2010.2089526"},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.1109\/36.628792"},{"key":"ref40","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2013.2280015"},{"key":"ref12","doi-asserted-by":"publisher","DOI":"10.1109\/36.134086"},{"key":"ref13","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.1986.289666"},{"key":"ref14","doi-asserted-by":"publisher","DOI":"10.1016\/j.rse.2017.01.015"},{"key":"ref15","doi-asserted-by":"publisher","DOI":"10.1016\/j.jag.2015.08.002"},{"key":"ref16","doi-asserted-by":"publisher","DOI":"10.1016\/j.rse.2004.05.018"},{"key":"ref17","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2009.2022088"},{"key":"ref18","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2017.2663768"},{"key":"ref19","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2013.2257605"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1029\/JC084iC09p05699"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1109\/JPROC.2010.2043918"},{"key":"ref6","first-page":"23","article-title":"Digital photogrammetry for measuring soil surface roughness","author":"rieke-zapp","year":"2001","journal-title":"J Amer Soc Photogram Remote Sens"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.1016\/j.isprsjprs.2012.06.005"},{"key":"ref8","doi-asserted-by":"publisher","DOI":"10.3998\/0472119356"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2002.807008"},{"key":"ref49","doi-asserted-by":"publisher","DOI":"10.1109\/JSTARS.2013.2257694"},{"key":"ref9","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2014.2377714"},{"key":"ref46","doi-asserted-by":"publisher","DOI":"10.1029\/WR016i003p00574"},{"key":"ref45","doi-asserted-by":"publisher","DOI":"10.1109\/IGARSS.2016.7729796"},{"key":"ref48","doi-asserted-by":"publisher","DOI":"10.1163\/156939302X01119"},{"key":"ref47","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2002.807587"},{"key":"ref42","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2007.914788"},{"key":"ref41","doi-asserted-by":"publisher","DOI":"10.1029\/2008JB005602"},{"key":"ref44","doi-asserted-by":"publisher","DOI":"10.1109\/TGRS.2018.2860630"},{"key":"ref43","author":"jarvis","year":"2008","journal-title":"Hole-filled seamless SRTM data V4"}],"container-title":["IEEE Transactions on Geoscience and Remote Sensing"],"original-title":[],"link":[{"URL":"http:\/\/xplorestaging.ieee.org\/ielx7\/36\/9547579\/09269430.pdf?arnumber=9269430","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,5,10]],"date-time":"2022-05-10T14:49:44Z","timestamp":1652194184000},"score":1,"resource":{"primary":{"URL":"https:\/\/ieeexplore.ieee.org\/document\/9269430\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,10]]},"references-count":64,"journal-issue":{"issue":"10"},"URL":"https:\/\/doi.org\/10.1109\/tgrs.2020.3035204","relation":{},"ISSN":["0196-2892","1558-0644"],"issn-type":[{"value":"0196-2892","type":"print"},{"value":"1558-0644","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,10]]}}}