Meteorological conditions during the ACLOUD/PASCAL field campaign near Svalbard in early summer 2017
| Autor: | Manfred Wendisch, Georg Heygster, Heiko Bozem, Bernd Heinold, Irina Gorodetskaya, André Ehrlich, Andreas Macke, Erlend M. Knudsen, Sandro Dahlke, Marion Maturilli, Annette Rinke, Holger Schmithüsen, Daniel Kunkel, Carolina Viceto, Christof Lüpkes, Mario Mech, Susanne Crewell |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Atmospheric Science
geography geography.geographical_feature_category 010504 meteorology & atmospheric sciences Advection Cloud cover 010502 geochemistry & geophysics 01 natural sciences lcsh:QC1-999 Aerosol lcsh:Chemistry Warm front Arctic lcsh:QD1-999 13. Climate action Climatology Period (geology) Sea ice Environmental science Satellite Institut für Geowissenschaften lcsh:Physics 0105 earth and related environmental sciences |
| Zdroj: | EPIC3Atmospheric Chemistry and Physics, COPERNICUS GESELLSCHAFT MBH, 18, pp. 17995-18022, ISSN: 1680-7316 Atmospheric Chemistry and Physics, Vol 18, Pp 17995-18022 (2018) |
| ISSN: | 1680-7324 |
| Popis: | The two concerted field campaigns, Arctic CLoud Observations Using airborne measurements during polar Day (ACLOUD) and the Physical feedbacks of Arctic planetary boundary level Sea ice, Cloud and AerosoL (PASCAL), took place near Svalbard from 23 May to 26 June 2017. They were focused on studying Arctic mixed-phase clouds and involved observations from two airplanes (ACLOUD), an icebreaker (PASCAL) and a tethered balloon, as well as ground-based stations. Here, we present the synoptic development during the 35-day period of the campaigns, using near-surface and upper-air meteorological observations, as well as operational satellite, analysis, and reanalysis data. Over the campaign period, short-term synoptic variability was substantial, dominating over the seasonal cycle. During the first campaign week, cold and dry Arctic air from the north persisted, with a distinct but seasonally unusual cold air outbreak. Cloudy conditions with mostly low-level clouds prevailed. The subsequent 2 weeks were characterized by warm and moist maritime air from the south and east, which included two events of warm air advection. These synoptical disturbances caused lower cloud cover fractions and higher-reaching cloud systems. In the final 2 weeks, adiabatically warmed air from the west dominated, with cloud properties strongly varying within the range of the two other periods. Results presented here provide synoptic information needed to analyze and interpret data of upcoming studies from ACLOUD/PASCAL, while also offering unprecedented measurements in a sparsely observed region. |
| Databáze: | OpenAIRE |
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