Synoptic-Scale Behavior of the Extratropical Tropopause Inversion Layer.

Pilch Kedzierski, Robin, Matthes, Katja and Bumke, Karl (2015) Synoptic-Scale Behavior of the Extratropical Tropopause Inversion Layer. Open Access Geophysical Research Letters, 42 (22). 10,018-10,026. DOI 10.1002/2015GL066409.

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Supplementary data:

Abstract

Key Points:
Daily snapshots of TIL strength; synoptic-Scale behavior of the TIL and shear/curl contributions to relative vorticity; TIL within ridges in midlatitude winter is stronger than polar summer TIL

High-resolution GPS radio occultation temperature profiles from the COSMIC satellite mission (2007–2013) are used to obtain daily snapshots of the strength of the extratropical tropopause inversion layer (TIL). Its horizontal structure and day-to-day variability are linked to the synoptic situation at near-tropopause level. The strength of the TIL in cyclonic as well as anticyclonic conditions is investigated by separating relative vorticity into curl and shear terms. The analysis shows that the TIL has high zonal variability, and its strength is instantaneously adjusted to the synoptic situation at near-tropopause level. Our key finding is that the TIL within midlatitude ridges in winter is as strong as or stronger than the TIL in polar summer. The strongest TIL in anticyclonic conditions is related to the shear term, while the weaker TIL in cyclonic conditions is enhanced by the curl term.

Document Type: Article
Additional Information: WOS:000368343200051
Keywords: daily snapshots of TIL strength; synoptic-Scale behavior of the TIL and shear/curl contributions to relative vorticity; TIL within ridges in midlatitude winter is stronger than polar summer TIL
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-ME Maritime Meteorology
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1002/2015GL066409
ISSN: 0094-8276
Related URLs:
Projects: NATHAN
Date Deposited: 07 Dec 2015 13:58
Last Modified: 10 Apr 2017 08:10
URI: http://oceanrep.geomar.de/id/eprint/30433

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