ETIN-MIP Extratropical-Tropical Interaction Model Intercomparison Project – protocol and initial results
Article
Article Title | ETIN-MIP Extratropical-Tropical Interaction Model Intercomparison Project – protocol and initial results |
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ERA Journal ID | 1961 |
Article Category | Article |
Authors | Kang, Sarah M. (Author), Hawcroft, Matt (Author), Xiang, Baoqiang (Author), Hwang, Yen-Ting (Author), Cazes, Gabriel (Author), Codron, Francis (Author), Crueger, Traute (Author), Deser, Clara (Author), Hodnebrog, Oivind (Author), Kim, Hanjun (Author), Kim, Jiyeong (Author), Kosaka, Yu (Author), Losada, Teresa (Author), Mechoso, Carlos R. (Author), Myhre, Gunnar (Author), Seland, Oyvind (Author), Stevens, Bjorn (Author), Watanabe, Masahiro (Author) and Yu, Sungduk (Author) |
Journal Title | Bulletin of the American Meteorological Society |
Journal Citation | 100 (12), pp. 2589-2606 |
Number of Pages | 40 |
Year | 2019 |
Publisher | American Meteorological Society |
Place of Publication | United States |
ISSN | 0003-0007 |
1520-0477 | |
Digital Object Identifier (DOI) | https://doi.org/10.1175/BAMS-D-18-0301.1 |
Web Address (URL) | https://journals.ametsoc.org/view/journals/bams/100/12/bams-d-18-0301.1.xml?tab_body=supplementary-materials |
Abstract | ETIN-MIP is a community-wide effort to improve dynamical understanding of the linkages between tropical precipitation and radiative biases in various regions, with implications for anthropogenic climate change and geoengineering. This article introduces the Extratropical-Tropical Interaction Model Intercomparison Project (ETIN-MIP), where a set of fully coupled model experiments are designed to examine the sources of longstanding tropical precipitation biases in climate models. In particular, we reduce insolation over three targeted latitudinal bands of persistent model biases: the southern extratropics, the southern tropics and the northern extratropics. To address the effect of regional energy bias corrections on the mean distribution of tropical precipitation, such as the double Intertropical Convergence Zone problem, we evaluate the quasi-equilibrium response of the climate system corresponding to a 50-year period after the 100 years of prescribed energy perturbation. Initial results show that, despite a large inter-model spread in each perturbation experiment due to differences in ocean heat uptake response and climate feedbacks across models, the southern tropics is most efficient at driving a meridional shift of tropical precipitation. In contrast, the extratropical energy perturbations are effectively damped by anomalous heat uptake over the subpolar oceans, thereby inducing a smaller meridional shift of tropical precipitation compared with the tropical energy perturbations. The ETIN-MIP experiments allow us to investigate the global implications of regional energy bias corrections, providing a route to guide the practice of model development, with implications for understanding dynamical responses to anthropogenic climate change and geoengineering. |
Keywords | ETIN-MIP; Extratropical-Tropical Interaction Model Intercomparison Project; tropical precipitation; radiative biases; climate models |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 370108. Meteorology |
370202. Climatology | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Ulsan National Institute of Science and Technology, Korea |
Centre for Applied Climate Sciences | |
National Oceanic and Atmospheric Administration, United States | |
National Taiwan University, Taiwan | |
University of the Republic, Uruguay | |
Sorbonne University, France | |
Max Planck Society, Germany | |
National Center for Atmospheric Research, United States | |
Centre for International Climate and Environmental Research, Norway | |
University of Tokyo, Japan | |
Complutense University of Madrid, Spain | |
University of California, United States | |
Center for International Climate Research, Norway | |
Norwegian Meteorological Institute, Norway | |
Yale University, United States |
https://research.usq.edu.au/item/q5679/etin-mip-extratropical-tropical-interaction-model-intercomparison-project-protocol-and-initial-results
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