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  ETIN-MIP: Extratropical-Tropical INteraction Model Intercomparison Project - Protocol and Initial Results

Kang, S., Hawcroft, M., Xiang, B., Hwang, Y.-T., Kim, H., Cazes, G., et al. (2019). ETIN-MIP: Extratropical-Tropical INteraction Model Intercomparison Project - Protocol and Initial Results. Bulletin of the American Meteorological Society, 100, 2589-2606. doi:10.1175/BAMS-D-18-0301.1.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0003-9F48-A Version Permalink: http://hdl.handle.net/21.11116/0000-0005-7A54-4
Genre: Journal Article

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 Creators:
Kang, Sarah, Author
Hawcroft, Matt, Author
Xiang, Baoqiang, Author
Hwang, Yen-Ting, Author
Kim, Hanjun, Author
Cazes, Gabriel, Author
Codron, Francis, Author
Crueger, Traute1, Author              
Deser, Clara, Author
Hodnebrog, Øivind, Author
Kim, Jiyeong, Author
Kosaka, Yu, Author
Losada, Teresa, Author
Mechoso, Carlos, Author
Myhre, Gunnar, Author
Seland, Øyvind, Author
Stevens, Bjorn2, Author              
Watanabe, Masahiro, Author
Yu, Sungduk, Author
Affiliations:
1Global Circulation and Climate, The Atmosphere in the Earth System, MPI for Meteorology, Max Planck Society, ou_3001850              
2Director’s Research Group AES, The Atmosphere in the Earth System, MPI for Meteorology, Max Planck Society, ou_913570              

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 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.

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Language(s): eng - English
 Dates: 2019-052019-08-282019-122019-12
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1175/BAMS-D-18-0301.1
 Degree: -

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Title: Bulletin of the American Meteorological Society
Source Genre: Journal
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Publ. Info: American Meteorological Society
Pages: - Volume / Issue: 100 Sequence Number: - Start / End Page: 2589 - 2606 Identifier: ISSN: 0003-0007
CoNE: https://pure.mpg.de/cone/journals/resource/954925377920