{"refrec":{"BRefID":448759,"RR":"<b>Macelloni, G.; Jezek, K.C.; Brogioni, M.; Johnson, J.T.; Leduc-Leballeur, M.; Picard, G.; Haddjeri, A.; Kaleschke, L.; Boutin, J.; Vergely, J.L.; Kolodziejczyk, N.; Bertino, L.; Dinnat, E.P.; Tonboe, R.T.; Solgaard, A.M.; Shen, X.; Walker, J.P.; Svendsen, S.H.; Lhermitte, S.; Zhou, Y.</b> (2026). Wideband Radiometry From P to S Band for Monitoring Polar Regions. <i>Proceedings of the IEEE 114(2)</i>: 261-283. <a href=\"https://dx.doi.org/10.1109/JPROC.2026.3653571\" target=\"_blank\">https://dx.doi.org/10.1109/JPROC.2026.3653571</a>","BEntID":446597,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Proceedings of the IEEE 114(2)</i>: 261-283. <a href=\"https://dx.doi.org/10.1109/JPROC.2026.3653571\" target=\"_blank\">https://dx.doi.org/10.1109/JPROC.2026.3653571</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Macelloni, G.; Jezek, K.C.; Brogioni, M.; Johnson, J.T.; Leduc-Leballeur, M.; Picard, G.; Haddjeri, A.; Kaleschke, L.; Boutin, J.; Vergely, J.L.; Kolodziejczyk, N.; Bertino, L.; Dinnat, E.P.; Tonboe, R.T.; Solgaard, A.M.; Shen, X.; Walker, J.P.; Svendsen, S.H.; Lhermitte, S.; Zhou, Y.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Macelloni, G. <i>et al.</i>","Englishabstract":"This article reviews existing and planned contributions of spaceborne microwave radiometry from P to S band to new measurements of key geophysical variables with a particular focus on the polar regions. It summarizes the current state of spaceborne microwave radiometry to measure ice sheet thermal states, sea ice thickness (SIT), salinity, and sea surface salinity (SSS). Then, this article discusses the potential of wideband radiometry, with continuous sampling in the range of 0.4-2 GHz, as a breakthrough for enhancing the estimation of geophysical variables such as SSS and the geothermal heat flux beneath the polar ice sheets, which are currently monitored primarily using L-band radiometry satellites. Furthermore, this article describes opportunities for new unique observations that cannot be achieved with the current constellation of satellite sensors. In addition, this article demonstrates the advantages of using low-frequency radiometry in sensing soil moisture and biomass from space due to the great sensing depth. This article concludes with a discussion of mission concepts highlighting the CryoRad mission, which has been selected as one of the four candidates for European Space Agency Earth Explorer 12 competition and is now conducting Phase 0 feasibility studies, envisions a 0.4-2-GHz dedicated spaceborne radiometer operated with circular polarization.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Wideband Radiometry From P to S Band for Monitoring Polar Regions","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-10-01 01:43:56.523858","timezone_type":1,"timezone":"+02:00"},"AuthorKeywords":"Microwave radiometry;Ice sheets;Ice;Uncertainty;Ocean temperature;Sea ice;Microwave integrated circuits;Microwave FET integrated circuits;Oceans;Antarctica;Cryosphere;new missions;sea surface salinity (SSS);wideband;sea-ice thickness;soil-moisture;sheet model;greenland;salinity;temperature;retrieval;depth;snow","OtherDescriptors":null,"Notes":null,"AnaPub":2026,"MonPub":null,"DateUpdate":"2026-09-28","DateCreate":"2026-09-28","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:001669329100001","VABBcode":null,"OpenAcc":0,"DOI":"10.1109/JPROC.2026.3653571"},"refs":null,"anarec":{"AnaID":448759,"PubliDate":2026,"Pagination":"261-283","XtraPublOfAnaID":null,"ISBN":null,"Volume":"114","Issue":"2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":276741,"SerRR":"Proceedings of the IEEE. 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