{"id":1018,"date":"2015-08-19T08:54:05","date_gmt":"2015-08-19T08:54:05","guid":{"rendered":"http:\/\/www.nwpsaf.eu\/site\/software\/aapp\/aapp-overview\/hirs-2\/"},"modified":"2015-08-19T09:09:54","modified_gmt":"2015-08-19T09:09:54","slug":"hirs-2","status":"publish","type":"page","link":"https:\/\/nwp-saf.eumetsat.int\/site\/software\/aapp\/aapp-overview\/hirs-2\/","title":{"rendered":"HIRS-2"},"content":{"rendered":"

High Resolution Infra Red Radiation Sounder\/2 (HIRS\/2)<\/h2>\n

The High Resolution Infra Red Radiation Sounder (HIRS\/2) flies on the NOAA\/TIROS-N type satellites and provides the basic 20 channel IR temperature and humidity soundings of the TOVS system. All HIRS\/2 channels are used to provide information on temperature and humidity profiles, surface temperature, cloud parameters and total ozone. Calibration of HIRS\/2 is performed every 40 scan lines, there is a gap of three scan lines in data coverage.. HIRS scans across track in a \u2018stop and stare\u2019 mode at a scan rate of 6.4 sec. There are 56 Earth Views per scan. The circular field-of-views have a diameter of 20 km at nadir. The swath covers \u00b1 1080 km.<\/p>\n

HIRS\/2 sounder channel characteristics<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Channel<\/td>\nCentre
\nWave number
\n(cm-1<\/sup>)<\/td>\n		Centre
\nFrequency
\n(mm)<\/td>\n		Half Bandwidth
\n(cm-1<\/sup>)<\/td>\n		Anticipated Max. Scene Temperature (K)<\/td>\nSpecified NEDN
\n(mW\/m2<\/sup>\/
\nsterad\/cm-1<\/sup>)<\/td>\n<\/tr>\n
1<\/td>\n669<\/td>\n14.95<\/td>\n3<\/td>\n280<\/td>\n3.00<\/td>\n<\/tr>\n
2<\/td>\n680<\/td>\n14.71<\/td>\n10<\/td>\n265<\/td>\n0.67<\/td>\n<\/tr>\n
3<\/td>\n690<\/td>\n14.49<\/td>\n12<\/td>\n240<\/td>\n0.50<\/td>\n<\/tr>\n
4<\/td>\n703<\/td>\n14.22<\/td>\n16<\/td>\n250<\/td>\n0.31<\/td>\n<\/tr>\n
5<\/td>\n716<\/td>\n13.97<\/td>\n16<\/td>\n265<\/td>\n0.21<\/td>\n<\/tr>\n
6<\/td>\n733<\/td>\n13.64<\/td>\n16<\/td>\n280<\/td>\n0.24<\/td>\n<\/tr>\n
7<\/td>\n749<\/td>\n13.35<\/td>\n16<\/td>\n290<\/td>\n0.20<\/td>\n<\/tr>\n
8<\/td>\n900<\/td>\n11.11<\/td>\n35<\/td>\n330<\/td>\n0.10<\/td>\n<\/tr>\n
9<\/td>\n1030<\/td>\n9.71<\/td>\n25<\/td>\n270<\/td>\n0.15<\/td>\n<\/tr>\n
10<\/td>\n797<\/td>\n12.55<\/td>\n16<\/td>\n290<\/td>\n0.20<\/td>\n<\/tr>\n
11<\/td>\n1365<\/td>\n7.33<\/td>\n40<\/td>\n275<\/td>\n0.20<\/td>\n<\/tr>\n
12<\/td>\n1488<\/td>\n6.72<\/td>\n80<\/td>\n260<\/td>\n0.19<\/td>\n<\/tr>\n
13<\/td>\n2190<\/td>\n4.57<\/td>\n23<\/td>\n300<\/td>\n0.006<\/td>\n<\/tr>\n
14<\/td>\n2210<\/td>\n4.52<\/td>\n23<\/td>\n290<\/td>\n0.003<\/td>\n<\/tr>\n
15<\/td>\n2240<\/td>\n4.46<\/td>\n23<\/td>\n280<\/td>\n0.004<\/td>\n<\/tr>\n
16<\/td>\n2270<\/td>\n4.40<\/td>\n23<\/td>\n260<\/td>\n0.002<\/td>\n<\/tr>\n
17<\/td>\n2360<\/td>\n4.24<\/td>\n23<\/td>\n280<\/td>\n0.002<\/td>\n<\/tr>\n
18<\/td>\n2240<\/td>\n4.13<\/td>\n28<\/td>\n330<\/td>\n0.002<\/td>\n<\/tr>\n
19<\/td>\n2660<\/td>\n3.76<\/td>\n100<\/td>\n340<\/td>\n0.001<\/td>\n<\/tr>\n
20<\/td>\n14500<\/td>\n0.69<\/td>\n1000<\/td>\n100 % Alb.<\/td>\n0.10 % A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

High Resolution Infra Red Radiation Sounder\/2 (HIRS\/2) The High Resolution Infra Red Radiation Sounder (HIRS\/2) flies on the NOAA\/TIROS-N type satellites and provides the basic 20 channel IR temperature and humidity soundings of the TOVS system. All HIRS\/2 channels are used to provide information on temperature and humidity profiles, surface temperature, cloud parameters and total ozone. Calibration of HIRS\/2 is performed every 40 scan lines, there is a gap of three scan lines in data coverage.. HIRS scans across track in a \u2018stop and stare\u2019 mode at a scan rate of 6.4 sec. There are 56 Earth Views per scan. […]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":997,"menu_order":75,"comment_status":"open","ping_status":"open","template":"","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"class_list":["post-1018","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/nwp-saf.eumetsat.int\/site\/wp-json\/wp\/v2\/pages\/1018","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nwp-saf.eumetsat.int\/site\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/nwp-saf.eumetsat.int\/site\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/nwp-saf.eumetsat.int\/site\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nwp-saf.eumetsat.int\/site\/wp-json\/wp\/v2\/comments?post=1018"}],"version-history":[{"count":0,"href":"https:\/\/nwp-saf.eumetsat.int\/site\/wp-json\/wp\/v2\/pages\/1018\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/nwp-saf.eumetsat.int\/site\/wp-json\/wp\/v2\/pages\/997"}],"wp:attachment":[{"href":"https:\/\/nwp-saf.eumetsat.int\/site\/wp-json\/wp\/v2\/media?parent=1018"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}