{"id":562,"date":"2019-08-23T16:20:05","date_gmt":"2019-08-23T16:20:05","guid":{"rendered":"https:\/\/www.pa.op.dlr.de\/southtrac\/?p=562"},"modified":"2019-08-25T08:50:01","modified_gmt":"2019-08-25T08:50:01","slug":"infinite-beam","status":"publish","type":"post","link":"https:\/\/www.pa.op.dlr.de\/southtrac\/southtracnews\/2019\/08\/23\/infinite-beam\/","title":{"rendered":"Infinite beam"},"content":{"rendered":"
\"\"<\/a>
HALO with ALIMA beam in front of the hangar. Photo: Valentin Lauther<\/figcaption><\/figure>\n

Late at night on Thursday scientists tested the 532 nm laser of the ALIMA lidar (light detection and ranging).<\/p>\n

The alignment of the laser emitted through a window on top of the aircraft, as well as the telescope that detects the backscattered photons, were adjusted.<\/p>\n

The lidar system uses Rayleigh backscatter to derive temperature and vertical wind velocity from the middle atmosphere above the aircraft. The object of interest are atmospheric gravity waves, density fluctuations which serve as a driving force for the circulation in the middle atmosphere. The measurements will give insights into their propagation, momentum transport and dissipation at a high bandwidth of frequencies.<\/p>\n

\"\"<\/a>
HALO with ALIMA beam in front of the hangar. Photo: Valentin Lauther<\/figcaption><\/figure>\n

Learn more about ALIMA on the website<\/a> of DLR’s Institute of Atmospheric Physics.<\/p>\n

There is also some short press coverage (German):<\/p>\n

23 Aug, Sueddeutsche: DLR startet Forschungsfl\u00fcge<\/a><\/p>\n

23 Aug, Merkur: Forschungsflugzeug HALO startet zu Nachtfl\u00fcgen<\/a><\/p>\n

24 Aug, Augsburger Allgemeine: Das Forschungsflugzeug startet wieder<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Late at night on Thursday scientists tested the 532 nm laser of the ALIMA lidar (light detection and ranging). The alignment of the laser emitted through a window on top of the aircraft, as well as the telescope that detects the backscattered photons, were adjusted.<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[16,19,27],"class_list":["post-562","post","type-post","status-publish","format-standard","hentry","category-southtracnews","tag-halo","tag-instrument","tag-pictures"],"_links":{"self":[{"href":"https:\/\/www.pa.op.dlr.de\/southtrac\/wp-json\/wp\/v2\/posts\/562","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pa.op.dlr.de\/southtrac\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pa.op.dlr.de\/southtrac\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pa.op.dlr.de\/southtrac\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pa.op.dlr.de\/southtrac\/wp-json\/wp\/v2\/comments?post=562"}],"version-history":[{"count":6,"href":"https:\/\/www.pa.op.dlr.de\/southtrac\/wp-json\/wp\/v2\/posts\/562\/revisions"}],"predecessor-version":[{"id":575,"href":"https:\/\/www.pa.op.dlr.de\/southtrac\/wp-json\/wp\/v2\/posts\/562\/revisions\/575"}],"wp:attachment":[{"href":"https:\/\/www.pa.op.dlr.de\/southtrac\/wp-json\/wp\/v2\/media?parent=562"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pa.op.dlr.de\/southtrac\/wp-json\/wp\/v2\/categories?post=562"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pa.op.dlr.de\/southtrac\/wp-json\/wp\/v2\/tags?post=562"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}