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The MIPAS/Envisat climatology (2002–2012) of polar stratospheric cloud volume density profiles

Höpfner, Michael; Deshler, Terry; Pitts, Michael; Poole, Lamont; Spang, Reinhold; Stiller, Gabriele; von Clarmann, Thomas

Abstract:
A global data set of vertical profiles of polar stratospheric cloud (PSC) volume density has been derived from Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) space-borne infrared limb measurements between 2002 and 2012. To develop a well characterized and efficient retrieval scheme, systematic tests based on limbradiance simulations for PSCs from in situ balloon observations have been performed. The finally selected wavenumber range was 831–832.5 cm$^{-1}$. Optical constants of nitric acid trihydrate (NAT) have been used to derive maximum and minimum profiles of volume density which are compatible with MIPAS observations under the assumption of small, non-scattering and larger, scattering PSC particles. These max/min profiles deviate from their mean value at each altitude by about 40 %–45 %, which is attributed as the maximum systematic error of the retrieval. Further, the retrieved volume density profiles are characterized by a random error due to instrumental noise of 0.02–0.05 μm$^{3}$ cm$^{-3}$, a detection limit of about 0.1–0.2 μm$^{3}$ cm$^{-3}$ and a vertical resolution of around 3 km. Comparisons with coincident observations by the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) on the CALIPSO (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations) satellite showed good agreement regarding the vertical profile shape. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000087174
Veröffentlicht am 06.11.2018
Coverbild
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 1867-8548
urn:nbn:de:swb:90-871743
KITopen-ID: 1000087174
HGF-Programm 12.04.03 (POF III, LK 01)
Erschienen in Atmospheric measurement techniques
Band 11
Heft 10
Seiten 5901–5923
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 25.10.2018
Nachgewiesen in Web of Science
Scopus
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