Upper-Air observations from the German atlantic expedition (1925-27) and comparison with the twentieth century and ERA-20C reanalyses ...

Between April 1925 and June 1927, the research vessel Meteor cruised the tropical and southern Atlantic Ocean in the framework of the German Atlantic Expedition. One purpose was to systematically explore the vertical structure of the atmosphere. To this end, the ocean was crossed in 14 profiles acro...

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Bibliographic Details
Main Authors: Stickler, Alexander, Storz, Samuel, Wartenburger, Richard, Hersbach, Hans, Compo, Gilbert P., Poli, Paul, Dee, Dick, Brönnimann, Stefan
Format: Article in Journal/Newspaper
Language:English
Published: ETH Zurich 2015
Subjects:
Twentieth Century Reanalysis
ERA-20C
Upper-Air data
ERA-CLIM
CHUAN
Kite
Pilot balloon
German Atlantic Expedition
Meteor
Atlantic
temperature
pressure
Wind
Circulation
humidity
Tropics
Extratropics
Sea ice
Online Access:https://dx.doi.org/10.3929/ethz-b-000107080
http://hdl.handle.net/20.500.11850/107080
Description
Summary:Between April 1925 and June 1927, the research vessel Meteor cruised the tropical and southern Atlantic Ocean in the framework of the German Atlantic Expedition. One purpose was to systematically explore the vertical structure of the atmosphere. To this end, the ocean was crossed in 14 profiles across parallels of latitude. 801 pilot balloons and 217 kites were launched. The resulting data have been digitised in the framework of the European project ERA-CLIM. Here, they are compared to the Twentieth Century (20CR) and ERA-20C reanalyses, independent datasets based on the assimilation of synoptic pressure and hurricane pressure records, and marine surface winds for the latter, using monthly sea surface temperature and sea ice as boundary conditions. Both reanalyses display similar patterns of systematic differences relative to the observations for temperature, specific humidity, and wind. Furthermore, 20CR and ERA-20C show generally comparable anomaly correlations for all parameters, with the highest values ... : Meteorologische Zeitschrift, 24 (5) ...

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