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dc.contributor.authorEnell, Carl-Fredrik
dc.contributor.authorHedin, Jonas
dc.contributor.authorStegman, Jacek
dc.contributor.authorWitt, Georg
dc.contributor.authorFriedrich, Martin
dc.contributor.authorSinger, Werner
dc.contributor.authorBaumgarten, Gerd
dc.contributor.authorKaifler, B.
dc.contributor.authorHoppe, Ulf-Peter
dc.contributor.authorGustavsson, Björn
dc.contributor.authorBrandstrom, U.
dc.contributor.authorKhaplanov, Mikhail
dc.contributor.authorKero, Antti
dc.contributor.authorUlich, Thomas
dc.contributor.authorTurunen, E.
dc.date.accessioned2014-03-27T11:15:36Z
dc.date.accessioned2016-05-04T10:44:59Z
dc.date.available2014-03-27T11:15:36Z
dc.date.available2016-05-04T10:44:59Z
dc.date.issued2011
dc.identifier.citationJournal of Atmospheric and Solar-Terrestrial Physics 2011, 73(14-15):2228-2236en_GB
dc.identifier.urihttp://hdl.handle.net/20.500.12242/436
dc.identifier.urihttps://ffi-publikasjoner.archive.knowledgearc.net/handle/20.500.12242/436
dc.descriptionEnell, Carl-Fredrik; Hedin, Jonas; Stegman, Jacek; Witt, Georg; Friedrich, Martin; Singer, Werner; Baumgarten, Gerd; Kaifler, B.; Hoppe, Ulf-Peter; Gustavsson, Björn; Brandstrom, U.; Khaplanov, Mikhail; Kero, Antti; Ulich, Thomas; Turunen, E.. The Hotel Payload 2 campaign: Overview of NO, O and electron density measurements in the upper mesosphere and lower thermosphere. Journal of Atmospheric and Solar-Terrestrial Physics 2011 ;Volum 73.(14-15) s. 2228-2236en_GB
dc.description.abstractThe ALOMAR eARI Hotel Payload 2 (HotPay 2) rocket campaign took place at Andøya Rocket Range, Norway, in January 2008. The rocket was launched on January 31, 2008 at 19:14 UT, when auroral activity appeared after a long geomagnetically quiet period. In this paper we present an overview of the HotPay 2 measurements of upper mesospheric and lower thermospheric (UMLT) electron, atomic oxygen (O) and nitric oxide (NO) densities. [O] and [NO] were retrieved from a set of three photometers, Night-Time Emissions from the Mesosphere and Ionosphere (NEMI). Faraday rotation receivers on the rocket and the EISCAT UHF incoherent scatter radar provided simultaneous electron density profiles, whereas the ALOMAR Na lidar and meteor radar measured the temperature profile and wind. The aurora was also observed with ground-based imagers. The retrieved oxygen number density profile has a maximum at 89 km, some 10 km lower than expected from earlier measurements and modelled profiles based on climatological averages (such as the MSIS model), and the retrieved NO densities are also lower than the expected. Satellite measurements indicate that subsidence over the winter pole controlled the densities. Quantitative chemistry model results based on climatological average atmospheric density and temperature profiles were, therefore, not in good agreement with the measured profiles. The Hotel Payload 2 measurements thus confirm the importance of downward transport from the thermosphere into the winter polar vortex.en_GB
dc.language.isoenen_GB
dc.subjectTermsetEmneord::Ionosfæren
dc.subjectTermsetEmneord::Mesosfære
dc.subjectTermsetEmneord::Andøya rakettskytefelt
dc.titleThe Hotel Payload 2 campaign: Overview of NO, O and electron density measurements in the upper mesosphere and lower thermosphereen_GB
dc.typeArticleen_GB
dc.date.updated2014-03-27T11:15:37Z
dc.identifier.cristinID1003285
dc.identifier.cristinID1003285
dc.identifier.doi10.1016/j.jastp.2011.01.001
dc.source.issn1364-6826
dc.type.documentJournal article


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