{"id":399,"date":"2023-08-03T18:09:39","date_gmt":"2023-08-03T18:09:39","guid":{"rendered":"https:\/\/itwg.ssec.wisc.edu\/rtsp\/?page_id=399"},"modified":"2023-08-03T18:09:40","modified_gmt":"2023-08-03T18:09:40","slug":"reference-rt","status":"publish","type":"page","link":"https:\/\/itwg.ssec.wisc.edu\/rtsp\/reference-rt\/","title":{"rendered":"Reference radiative transfer calculations"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Spectroscopic databases<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>access the latest edition of the&nbsp;<a href=\"http:\/\/www.hitran.com\/\">HITRAN database<\/a>&nbsp;and associated updates and documentation<\/li>\n\n\n\n<li>access the latest versions of the&nbsp;<a href=\"http:\/\/ara.lmd.polytechnique.fr\/htdocs-public\/products\/GEISA\/HTML-GEISA\/\">complete GEISA<\/a>&nbsp;and&nbsp;<a href=\"http:\/\/ara.lmd.polytechnique.fr\/htdocs-public\/products\/GEISA\/HTML-GEISA\/GeisaIasi_index.html\">GEISA\/IASI<\/a>&nbsp;databases, and associated software and documentation.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">New considerations for modellers<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ozone absorption in the AMSU 183 GHz channels should be included in RT models (brightness temperature variations are of the order of 0.5 K).<\/li>\n\n\n\n<li>The 23 GHz water vapour absorption line half-widths have been revised based on results from the ARM site. A study of the resulting\u00a0<a href=\"https:\/\/itwg.ssec.wisc.edu\/rtsp\/wp-content\/uploads\/sites\/7\/2023\/08\/UKMO_22GHz_report.pdf\" data-type=\"attachment\" data-id=\"400\">impact for AMSU and SSMI radiances<\/a>\u00a0has been provided by Bill Bell and Stephen English (UKMO).<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Line-by-line radiative transfer models<\/h2>\n\n\n\n<p>Access\u00a0<a href=\"https:\/\/itwg.ssec.wisc.edu\/rtsp\/lblmodel-status-summaries\/\" data-type=\"page\" data-id=\"401\">full summaries of model features and development status<\/a>\u00a0provided by the model developers and updated after each ITSC by the RTSP working group.<\/p>\n\n\n\n<p>Marco Matricardi\u00a0(ECMWF) has prepared a report of intercomparisons between LBL codes used in the development of fast RT models for use in NWP. See\u00a0<a rel=\"noreferrer noopener\" href=\"http:\/\/www.ecmwf.int\/publications\/library\/do\/references\/list\/14#2007\" target=\"_blank\">ECMWF Tech. Memo. 525, May 2007<\/a>\u00a0for details.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Infrared LbL models<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>Model<\/th><th>Principal developer<\/th><th>Model website\/contact<\/th><\/tr><tr><td>LBLRTM<\/td><td>Tony Clough (AER)<\/td><td><a href=\"http:\/\/rtweb.aer.com\/lblrtm.html\">LBLRTM website<\/a><\/td><\/tr><tr><td>GENLN2<\/td><td>Dave Edwards (NCAR)<\/td><td><a href=\"mailto:edwards@ncar.ucar.edu\">email developer<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/itwg.ssec.wisc.edu\/rtsp\/lblmodel-status-summaries\/\" data-type=\"page\" data-id=\"401\">RFM<\/a><\/td><td>Anu Duhdia (Univ. Oxford)<\/td><td><a href=\"http:\/\/www.atm.ox.ac.uk\/RFM\/index.html\">RFM website<\/a><\/td><\/tr><tr><td>4A<\/td><td>Noelle Scott (LMD)<\/td><td><a href=\"http:\/\/ara.lmd.polytechnique.fr\/htdocs-public\/products\/4A.html\">ARA-4A website<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/itwg.ssec.wisc.edu\/rtsp\/lblmodel-status-summaries\/\" data-type=\"page\" data-id=\"401\">kCARTA<\/a><\/td><td>Sergio de Souza-Machado (UMBC)<\/td><td><a href=\"http:\/\/asl.umbc.edu\/pub\/packages\/kcarta.html\">kCARTA website<\/a><\/td><\/tr><tr><td>sigma-IASI<\/td><td>Guido Masiello (IMAA)<\/td><td><a href=\"http:\/\/www.imaa.cnr.it\/n_LAB_radiometry4.htm\"><\/a><\/td><\/tr><tr><td>Hartcode<\/td><td>Ferenc Miskolczi (NASA,LaRC)<\/td><td><a href=\"https:\/\/cimss.ssec.wisc.edu\/itwg\/groups\/rtwg\/refrt.html\"><\/a><\/td><\/tr><tr><td>FLBL<\/td><td>Shawn Turner (MSC)<\/td><td><a href=\"https:\/\/cimss.ssec.wisc.edu\/itwg\/groups\/rtwg\/refrt.html\"><\/a><\/td><\/tr><tr><td>ARTS<\/td><td>Axel von Engeln (Univ. Bremen)<\/td><td><a href=\"http:\/\/www.sat.uni-bremen.de\/arts\/\">ARTS website<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/itwg.ssec.wisc.edu\/rtsp\/lblmodel-status-summaries\/\" data-type=\"page\" data-id=\"401\">KOPRA<\/a><\/td><td>Michael Hoepfner (Univ. Kahlsruhe)<\/td><td><a href=\"http:\/\/www-imk.fzk.de\/asf\/ame\/publications\/kopra_docu\/kopra_docu.html\">KOPRA website<\/a><\/td><\/tr><tr><td>GENSPECT<\/td><td>? (Univ. Toronto)<\/td><td><a href=\"http:\/\/www.genspect.com\/\">GENSPECT website<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Microwave LbL models<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>Model<\/th><th>Principal developer<\/th><th>Model website\/contact<\/th><\/tr><tr><td>MPM 89\/92<\/td><td>Hans Liebe (NTIA)<\/td><td><a href=\"http:\"><\/a><\/td><\/tr><tr><td>MonoRTM<\/td><td>Tony Clough (AER)<\/td><td><a href=\"http:\/\/rtweb.aer.com\/monortm_frame.html\">MonoRTM website<\/a><\/td><\/tr><tr><td>Rosenkranz<\/td><td>? ()<\/td><td><a href=\"http:\"><\/a><\/td><\/tr><tr><td>ATM<\/td><td>? ()<\/td><td><a href=\"http:\"><\/a><\/td><\/tr><tr><td>STRANSAC<\/td><td>Noelle Scott (LMD)<\/td><td><a href=\"http:\"><\/a><\/td><\/tr><tr><td>ARTS<\/td><td>Axel von Engeln (Univ. Bremen)<\/td><td><a href=\"http:\/\/www.sat.uni-bremen.de\/arts\/\">ARTS website<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Spectroscopic databases New considerations for modellers Line-by-line radiative transfer models Access\u00a0full summaries of model features and development status\u00a0provided by the model developers and updated after each ITSC by the RTSP working group. Marco Matricardi\u00a0(ECMWF) has prepared a report of intercomparisons between LBL codes used in the development of fast RT models for use in NWP. [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-399","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/itwg.ssec.wisc.edu\/rtsp\/wp-json\/wp\/v2\/pages\/399","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itwg.ssec.wisc.edu\/rtsp\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/itwg.ssec.wisc.edu\/rtsp\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/itwg.ssec.wisc.edu\/rtsp\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/itwg.ssec.wisc.edu\/rtsp\/wp-json\/wp\/v2\/comments?post=399"}],"version-history":[{"count":1,"href":"https:\/\/itwg.ssec.wisc.edu\/rtsp\/wp-json\/wp\/v2\/pages\/399\/revisions"}],"predecessor-version":[{"id":403,"href":"https:\/\/itwg.ssec.wisc.edu\/rtsp\/wp-json\/wp\/v2\/pages\/399\/revisions\/403"}],"wp:attachment":[{"href":"https:\/\/itwg.ssec.wisc.edu\/rtsp\/wp-json\/wp\/v2\/media?parent=399"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}