Impact of increased resolution on long-standing biases in HighResMIP-PRIMAVERA climate models

We examine the influence of increased resolution on four long-standing biases using five different climate models developed within the PRIMAVERA project. The biases are the warm eastern tropical oceans, the double Intertropical Convergence Zone (ITCZ), the warm Southern Ocean, and the cold North Atl...

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Bibliographic Details
Published in:Geoscientific Model Development
Main Authors: E. Moreno-Chamarro, L.-P. Caron, S. Loosveldt Tomas, J. Vegas-Regidor, O. Gutjahr, M.-P. Moine, D. Putrasahan, C. D. Roberts, M. J. Roberts, R. Senan, L. Terray, E. Tourigny, P. L. Vidale
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2022
Subjects:
Geology
QE1-996.5
Southern Ocean
North Atlantic
Online Access:https://doi.org/10.5194/gmd-15-269-2022
https://doaj.org/article/64753260b09c4c059251a2ce276dd144
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Summary:We examine the influence of increased resolution on four long-standing biases using five different climate models developed within the PRIMAVERA project. The biases are the warm eastern tropical oceans, the double Intertropical Convergence Zone (ITCZ), the warm Southern Ocean, and the cold North Atlantic. Atmosphere resolution increases from ∼100 –200 to ∼25 –50 km, and ocean resolution increases from <math xmlns="http://www.w3.org/1998/Math/MathML" id="M3" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>∼</mo><mn mathvariant="normal">1</mn><msup><mi/><mo>∘</mo></msup></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="23pt" height="11pt" class="svg-formula" dspmath="mathimg" md5hash="f4f900e72b8ea188e241f307d361fb0d"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="gmd-15-269-2022-ie00001.svg" width="23pt" height="11pt" src="gmd-15-269-2022-ie00001.png"/></svg:svg> (eddy-parametrized) to <math xmlns="http://www.w3.org/1998/Math/MathML" id="M4" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>∼</mo><mn mathvariant="normal">0.25</mn><msup><mi/><mo>∘</mo></msup></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="38pt" height="11pt" class="svg-formula" dspmath="mathimg" md5hash="51aba030079be46ff61eb3f0cdb92e81"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="gmd-15-269-2022-ie00002.svg" width="38pt" height="11pt" src="gmd-15-269-2022-ie00002.png"/></svg:svg> (eddy-present). For one model, ocean resolution also reaches <math xmlns="http://www.w3.org/1998/Math/MathML" id="M5" display="inline" overflow="scroll" dspmath="mathml"><mrow><mn mathvariant="normal">1</mn><mo>/</mo><mn mathvariant="normal">12</mn></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" ...

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