Arctic inversion strength in climate models

AMS Citation:
Medeiros, B., C. Deser, R. Tomas, and J. Kay, 2011: Arctic inversion strength in climate models. Journal of Climate, 24, 4733-4740, doi:10.1175/2011JCLI3968.1.
Date:2011-09-01
Resource Type:article
Title:Arctic inversion strength in climate models
Abstract: Recent work indicates that climate models have a positive bias in the strength of the winter-time low-level temperature inversion over the high-latitude northern hemisphere. It has been argued this bias leads to underestimates of the Arctic's surface temperature response to anthropogenic forcing. Here the bias in inversion strength is revisited. The spatial distribution of low-level stability is found to be bimodal in climate models and observational reanalysis products, with low-level inversions represented by a stable primary mode over the interior Arctic Ocean and adjacent continents, and a secondary unstable mode over the Atlantic Ocean. Averaging over these differing conditions is detrimental to understanding the origins of the inversion strength bias. While nearly all of the 21 models examined overestimate the area-average inversion strength, conditionally sampling the two modes shows about half the models are biased because of the relative partitioning of the modes and half because of biases within the stable mode.
Peer Review:Refereed
Copyright Information:Copyright 2011 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be "fair use" under Section 107 or that satisfies the conditions specified in Section 108 of the U.S. Copyright Law (17 USC, as revised by P.L. 94-553) does not require the Society's permission. Republication, systematic reproduction, posting in electronic form on servers, or other uses of this material, except as exempted by the above statements, requires written permission or license from the AMS. Additional details are provided in the AMS Copyright Policies, available from the AMS at 617-227-2425 or amspubs@ametsoc.org. Permission to place a copy of this work on this server has been provided by the AMS. The AMS does not guarantee that the copy provided here is an accurate copy of the published work.
OpenSky citable URL: ark:/85065/d7qz2bgg
Publisher's Version: 10.1175/2011JCLI3968.1
Author(s):
  • Brian Medeiros - NCAR/UCAR
  • Clara Deser - NCAR/UCAR
  • Robert Tomas - NCAR/UCAR
  • Jennifer Kay - NCAR/UCAR
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