{"id":99,"date":"2015-09-21T14:56:26","date_gmt":"2015-09-21T19:56:26","guid":{"rendered":"http:\/\/www-test2.ssec.wisc.edu\/aeri\/?page_id=99"},"modified":"2025-03-03T20:05:36","modified_gmt":"2025-03-03T20:05:36","slug":"aeri-home-page","status":"publish","type":"page","link":"https:\/\/www.ssec.wisc.edu\/aeri\/","title":{"rendered":"Home"},"content":{"rendered":"<div class=\"ssec-carousel\">\n\t<img decoding=\"async\" src=\"https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2018\/05\/AWR.jpg\" class=\"ssec-carousel-image ssec-carousel-image-bottom\" alt=\"\">\n\t<img decoding=\"async\" src=\"https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2018\/05\/AWR.jpg\"\n\t\t class=\"ssec-carousel-image ssec-carousel-image-top\" alt=\"\">\n\n\t<button class=\"left-arrow arrow\" alt=\"View Previous Image\">\n\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 65 65\" aria-hidden=\"true\" role=\"presentation\">\n\t\t\t<defs>\n\t\t\t\t<style>\n\t\t\t\t\t.cls-1 {\n\t\t\t\t\t\tfill: #fff;\n\t\t\t\t\t\topacity: 0.8;\n\t\t\t\t\t}\n\n\t\t\t\t\t.cls-2 {\n\t\t\t\t\t\tfill: #214083;\n\t\t\t\t\t\tfill-rule: evenodd;\n\t\t\t\t\t}\n\t\t\t\t<\/style>\n\t\t\t<\/defs>\n\t\t\t<circle id=\"left_nav_circle\" data-name=\"left nav circle\" class=\"cls-1\" cx=\"32.5\" cy=\"32.5\"\n\t\t\t\t\tr=\"32.5\"\/>\n\t\t\t<path id=\"left_nav_arrow\" data-name=\"left nav arrow\" class=\"cls-2\"\n\t\t\t\t  d=\"M22,49L34.985,32.5,22,16H33.014L46,32.5,33.014,49H22Z\"\/>\n\t\t<\/svg>\n\t<\/button>\n\t<button class=\"right-arrow arrow\" alt=\"View Next Image\">\n\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 65 65\" aria-hidden=\"true\" role=\"presentation\">\n\t\t\t<defs>\n\t\t\t\t<style>\n\t\t\t\t\t.cls-1 {\n\t\t\t\t\t\tfill: #fff;\n\t\t\t\t\t\topacity: 0.8;\n\t\t\t\t\t}\n\n\t\t\t\t\t.cls-2 {\n\t\t\t\t\t\tfill: #214083;\n\t\t\t\t\t\tfill-rule: evenodd;\n\t\t\t\t\t}\n\t\t\t\t<\/style>\n\t\t\t<\/defs>\n\t\t\t<circle id=\"right_nav_circle\" data-name=\"right nav circle\" class=\"cls-1\" cx=\"32.5\" cy=\"32.5\"\n\t\t\t\t\tr=\"32.5\"\/>\n\t\t\t<path id=\"right_nav_arrow\" data-name=\"right nav arrow\" class=\"cls-2\"\n\t\t\t\t  d=\"M22,49L34.985,32.5,22,16H33.014L46,32.5,33.014,49H22Z\"\/>\n\t\t<\/svg>\n\n\t<\/button>\n\n\t<script>\n\n\n\t\t(function() {\n\t\t\tvar CURRENT_INDEX = 0;\n\t\t\tvar IMAGES = [\n\t\t\t\t\t\t\t\t\"https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2018\/05\/AWR.jpg\",\n\t\t\t\t\t\t\t\t\"https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2018\/05\/ASI.jpg\",\n\t\t\t\t\t\t\t\t\"https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2018\/05\/ACX.jpg\",\n\t\t\t\t\t\t\t\t\"https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2018\/05\/NSA.jpg\",\n\t\t\t\t\t\t\t\t\"https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2018\/05\/MAR.jpg\",\n\t\t\t\t\t\t\t\t\"https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2018\/05\/ENA.jpg\",\n\t\t\t\t\t\t\t\t\"https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2018\/05\/SGP.jpg\",\n\t\t\t\t\t\t\t];\n\t\t\tvar IMAGE_IN_TRANSITION = false;\n\t\t\tvar SLIDESHOW_PAUSED = false;\n\n\t\t\t$(document).ready(function() {\n\t\t\t\t$('button.arrow').bind('click', function(event) {\n\t\t\t\t\tif ( IMAGE_IN_TRANSITION ) return;\n\t\t\t\t\tdisplayImage(CURRENT_INDEX, ($(this).hasClass('left-arrow')) ? 'previous' : 'next', 'fast');\n\t\t\t\t});\n\n\t\t\t\t$(\".ssec-carousel\").bind('mouseover', function(){\n\t\t\t\t\tSLIDESHOW_PAUSED = true;\n\t\t\t\t});\n\t\t\t\t$(\".ssec-carousel\").bind('mouseout', function(){\n\t\t\t\t\tSLIDESHOW_PAUSED = false;\n\t\t\t\t});\n\n\t\t\t\twindow.setInterval(function(){\n\t\t\t\t\tif ( SLIDESHOW_PAUSED ) return;\n\t\t\t\t\tdisplayImage(CURRENT_INDEX, 'next', 'slow');\n\t\t\t\t}, 4000);\n\t\t\t});\n\n\t\t\t\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\n\n\t\t\tfunction displayImage(current_index, direction, speed) {\n\t\t\t\tvar $ssec_carousel_image = $('.ssec-carousel-image');\n\t\t\t\tvar displayedImage = 1;\n\t\t\t\tvar imageToFadeTo = 0;\n\n\t\t\t\t\/\/ set image to display as the image below the currently displayed image\n\t\t\t\tvar newIndex;\n\t\t\t\tif (direction === 'next') {\n\t\t\t\t\tnewIndex = current_index + 1;\n\t\t\t\t\tif (newIndex > IMAGES.length - 1) newIndex = 0;\n\t\t\t\t} else { \/\/ previous\n\t\t\t\t\tnewIndex = current_index - 1;\n\t\t\t\t\tif (newIndex < 0) newIndex = IMAGES.length - 1;\n\t\t\t\t}\n\t\t\t\t$ssec_carousel_image.eq(imageToFadeTo).attr('src', IMAGES[newIndex]);\n\n\t\t\t\t\/\/ ok, change image\n\t\t\t\tspeed = (speed === 'slow') ? 1000 : 200;\n\t\t\t\tIMAGE_IN_TRANSITION = true;\n\t\t\t\t$ssec_carousel_image.eq(displayedImage).fadeToggle(speed, \"linear\", function() {\n\t\t\t\t\tCURRENT_INDEX = newIndex;\n\t\t\t\t\t\/\/ ok, set things up for the next time this function is called.\n\t\t\t\t\t\/\/ Make top image the image we are displaying and make it visible again\n\t\t\t\t\t$ssec_carousel_image.eq(displayedImage).attr('src', IMAGES[newIndex]).show();\n\t\t\t\t\tIMAGE_IN_TRANSITION = false;\n\t\t\t\t});\n\t\t\t}\n\t\t}());\n\n\n\t<\/script>\n<\/div>\n<div id=\"content_inner\" class=\"centralColumn\">\n<div id=\"main_content\">\n<div>\n<h2>Overview<\/h2>\n<p>The Atmospheric Emitted Radiance Interferometer (AERI) is a ground-based instrument that measures the downwelling infrared radiance (radiant energy) from the Earth\u2019s atmosphere.\u00a0 The observations have broad spectral content, and sufficient spectral resolution to discriminate among gaseous emitters (e.g. carbon dioxide, water vapor) and suspended matter (e.g. aerosols, water droplets, ice crystals).\u00a0 These remote sensing surface observations can be used to obtain vertical profiles of tropospheric temperature and water vapor, as well as measurements of trace gases (e.g. ozone, carbon monoxide, methane) and downwelling infrared spectral signatures of clouds and aerosols.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1290\" src=\"http:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2018\/04\/AERI-outside-wide-300x175.jpg\" alt=\"\" width=\"800\" height=\"466\" srcset=\"https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2018\/04\/AERI-outside-wide-300x175.jpg 300w, https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2018\/04\/AERI-outside-wide-768x447.jpg 768w, https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2018\/04\/AERI-outside-wide-1024x596.jpg 1024w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p align=\"center\"><em>AERI instrument front-end view, with protective enclosure removed; undergoing testing at UW SSEC.<\/em><\/p>\n<\/div>\n<div>\n<h2>Instrument Specifications<\/h2>\n<p>The AERI is a passive remote sounding instrument, employing a Fourier transform spectrometer operating in the spectral range 3.3\u201319.2 \u00b5m (520\u20133020 cm<sup>-1<\/sup>) at an unapodized resolution of 0.5 cm<sup>-1<\/sup> (max optical path difference of 1 cm). The extended range AERIs (ER-AERI) deployed in dry regions (e.g. the Arctic) have a spectral range of 3.3\u201325.0 \u00b5m (400\u20133020 cm<sup>-1<\/sup>) that allow measurements in the far-infrared region. Two detectors are used, an HgCdTe and an InSb, cooled to cryogenic temperatures, to cover these spectral ranges. The instrument has a zenith angular field-of-view of 46 mrad full angle. The AERI absolute radiometric accuracy is designed to be better than 1% of the radiance of a blackbody at surface ambient temperature. This level of absolute accuracy is important for long-term trend analysis as well as for products derived from AERI radiances. The radiometric accuracy is ensured by regular calibration views of two high-quality blackbodies: the Hot Blackbody (HBB) is temperature controlled to 333 K; the Ambient Blackbody (ABB) passively follows ambient temperature. The AERI averages views of the sky over a 16 second interval; The AERI operates continuously and a sky view is taken approximately every 20 seconds.<\/p>\n<p><a href=\"https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2019\/02\/AERI-spectra.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1503\" src=\"https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2019\/02\/AERI-spectra-300x225.png\" alt=\"\" width=\"600\" height=\"450\" srcset=\"https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2019\/02\/AERI-spectra-300x225.png 300w, https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2019\/02\/AERI-spectra-768x576.png 768w, https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2019\/02\/AERI-spectra-1024x768.png 1024w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p style=\"text-align: center;\"><em>AERI spectra in thick cloud, thin cloud and clear sky conditions.<\/em><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2478 size-large\" src=\"https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2023\/12\/time_height_xsection-1024x580.png\" alt=\"\" width=\"1024\" height=\"580\" srcset=\"https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2023\/12\/time_height_xsection-1024x580.png 1024w, https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2023\/12\/time_height_xsection-300x170.png 300w, https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2023\/12\/time_height_xsection-768x435.png 768w, https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2023\/12\/time_height_xsection.png 1500w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<p align=\"center\"><em>Time-height cross sections of temperature and water vapor concentration over the course of 5 hours showing a nocturnal boundary layer with an elevated bore, at Norman Oklahoma, retrieved from AERI data using the TROPoe algorithm.<\/em><\/p>\n<\/div>\n<div>\n<h2>History<\/h2>\n<p>The AERI was designed by the University of Wisconsin Space Science and Engineering Center (UW SSEC) for the <a href=\"http:\/\/energy.gov\/\">Department of Energy<\/a> (DOE) <a href=\"http:\/\/www.arm.gov\/\">Atmospheric Radiation Measurement<\/a> (ARM) program in the 1990s. The AERI instrument played an essential role in the success of the ARM program by providing an accurate reference in tropical, mid-latitude continental, and arctic atmospheres for the validation of infrared radiative transfer models used in global atmospheric models. AERI instruments have since been deployed worldwide. Long-term AERI data records are available at the DOE ARM fixed sites at the Southern Great Plains (SGP, 1995\u2013present), the North Slope of Alaska (NSA, 1998\u2013present), and the Tropical Western Pacific (1998\u20132014). The AERIs in the ARM Mobile Facilities (AMF) have been deployed for field campaigns throughout the world. The AMF-2 contains a Marine-AERI that is capable of shipboard deployment and can also measure sea surface emissivity and skin temperature.<\/p>\n<p>The AERI technology has been licensed by the University of Wisconsin to the commercial company ABB Inc., who is currently responsible for the manufacture of the hardware and installation of the operating software.<\/p>\n<p><a href=\"https:\/\/www.google.com\/maps\/d\/viewer?mid=1qj-dI5uObcDyrfGSeP6Suje43lM&amp;usp=sharing\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2474 size-large\" src=\"https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2023\/07\/Worldwide-AERI-Deployment-2023-Combined-1024x647.png\" alt=\"\" width=\"1024\" height=\"647\" srcset=\"https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2023\/07\/Worldwide-AERI-Deployment-2023-Combined-1024x647.png 1024w, https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2023\/07\/Worldwide-AERI-Deployment-2023-Combined-300x190.png 300w, https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2023\/07\/Worldwide-AERI-Deployment-2023-Combined-768x486.png 768w, https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2023\/07\/Worldwide-AERI-Deployment-2023-Combined-1536x971.png 1536w, https:\/\/www.ssec.wisc.edu\/aeri\/wp-content\/uploads\/sites\/21\/2023\/07\/Worldwide-AERI-Deployment-2023-Combined-2048x1295.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<p style=\"text-align: center;\"><em>Current (green) and past (red) AERI deployments by DOE ARM at fixed (square) and mobile (circle) sites<\/em><\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Overview The Atmospheric Emitted Radiance Interferometer (AERI) is a ground-based instrument that measures the downwelling infrared radiance (radiant energy) from the Earth\u2019s atmosphere.\u00a0 The observations have broad spectral content, and sufficient spectral resolution to discriminate among gaseous emitters (e.g. carbon dioxide, water vapor) and suspended matter (e.g. aerosols, water droplets, ice crystals).\u00a0 These remote sensing [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":-1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-99","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.ssec.wisc.edu\/aeri\/wp-json\/wp\/v2\/pages\/99","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ssec.wisc.edu\/aeri\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ssec.wisc.edu\/aeri\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ssec.wisc.edu\/aeri\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ssec.wisc.edu\/aeri\/wp-json\/wp\/v2\/comments?post=99"}],"version-history":[{"count":30,"href":"https:\/\/www.ssec.wisc.edu\/aeri\/wp-json\/wp\/v2\/pages\/99\/revisions"}],"predecessor-version":[{"id":2531,"href":"https:\/\/www.ssec.wisc.edu\/aeri\/wp-json\/wp\/v2\/pages\/99\/revisions\/2531"}],"wp:attachment":[{"href":"https:\/\/www.ssec.wisc.edu\/aeri\/wp-json\/wp\/v2\/media?parent=99"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}