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Measurements of global distributions of polar mesospheric clouds during 2005–2012 by MIPAS/Envisat

Garcia-Comas, Maya; Lopez-Puertas, Manuel; Funke, Bernd; Aythami Jurado-Navarro, A.; Gardini, Angela; Stiller, Gabriele P.; von Clarmann, Thomas; Höpfner, Michael

Abstract:
We have analysed MIPAS (Michelson Interferometer for Passive Atmopheric Sounding) infrared measurements of PMCs for the summer seasons in the Northern (NH) and Southern (SH) hemispheres from 2005 to 2012. Measurements of PMCs using this technique are very useful because they are sensitive to the total ice volume and independent of particle size. For the first time, MIPAS has provided coverage of the PMC total ice volume from midlatitudes to the poles. MIPAS measurements indicate the existence of a continuous layer of mesospheric ice, extending from about ~ 81 km up to about 88–89 km on average and from the poles to about 50–60° in each hemisphere, increasing in concentration with proximity to the poles. We have found that the ice concentration is larger in the Northern Hemisphere than in the Southern Hemisphere. The ratio between the ice water content (IWC) in both hemispheres is also latitudedependent, varying from a NH= SH ratio of 1.4 close to the poles to a factor of 2.1 around 60°. This also implies that PMCs extend to lower latitudes in the NH. A very clear feature of the MIPAS observations is that PMCs tend to be at higher al ... mehr


Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.5194/acp-16-6701-2016
ISSN: 1680-7316, 1680-7324
URN: urn:nbn:de:swb:90-646548
KITopen ID: 1000064654
HGF-Programm 12.04.05; LK 01
Erschienen in Atmospheric chemistry and physics
Band 16
Heft 11
Seiten 6701-6719
Lizenz CC BY 3.0 DE: Creative Commons Namensnennung 3.0 Deutschland
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