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Global climatologies of Eulerian and Lagrangian flow features based on ERA-Interim reanalyses

Sprenger, Michael; Fragkoulidis, Georgios; Binder, Hanin; Croci-Maspoli, Mischa; Graf, Pascal; Grams, Christian M.; Knippertz, Peter; Madonna, Erica; Schemm, Sebastian; Škerlak, Bojan; Wernli, Heini

Abstract:
This paper introduces a newly compiled set of feature-based climatologies identified from ERA-Interim (1979–2014). Two categories of flow features are considered: (i) Eulerian climatologies of jet streams, tropopause folds, surface fronts, cyclones and anticyclones, blocks, and potential vorticity streamers and cutoffs and (ii) Lagrangian climatologies, based on a large ensemble of air parcel trajectories, of stratosphere–troposphere exchange, warm conveyor belts, and tropical moisture exports. Monthly means of these feature climatologies are openly available at the ETH Zürich web page (http://eraiclim.ethz.ch) and are annually updated. Datasets at higher resolution can be obtained from the authors on request. These feature climatologies allow studying the frequency, variability, and trend of atmospheric phenomena and their interrelationships across temporal scales. To illustrate the potential of this dataset, boreal winter climatologies of selected features are presented and, as a first application, the very unusual Northern Hemispheric winter of 2009/10 is identified as the season when most of the considered features show maximum ... mehr


Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Forschungsbereich Troposphäre (IMK-TRO)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator DOI: 10.1175/BAMS-D-15-00299.1
ISSN: 0003-0007, 1520-0477
URN: urn:nbn:de:swb:90-688757
KITopen ID: 1000068875
HGF-Programm 12.01.02; LK 01
Erschienen in Bulletin of the American Meteorological Society
Band 98
Heft 8
Seiten 1739-1748
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