利用LFRic-Atmosphere模拟类地行星上理想的三维大气流动

IF 4 3区 地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY Geoscientific Model Development Pub Date : 2023-10-10 DOI:10.5194/gmd-16-5601-2023
Denis E. Sergeev, Nathan J. Mayne, Thomas Bendall, Ian A. Boutle, Alex Brown, Iva Kavčič, James Kent, Krisztian Kohary, James Manners, Thomas Melvin, Enrico Olivier, Lokesh K. Ragta, Ben Shipway, Jon Wakelin, Nigel Wood, Mohamed Zerroukat
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引用次数: 0

摘要

摘要我们证明了LFRic-Atmosphere,一个使用英国气象局GungHo动力核心建立的模型,能够再现由几种广泛使用的基准配方指定的理想的大尺度大气环流模式。这是由于系外行星的快速发现和对其大气的数值模拟和特征的不断增长的需求。在这里,我们展示了LFRic-Atmosphere在模拟系外行星建模界常用的环流制度的理想测试中的结果。基准包括三种分析强迫案例:标准的Held-Suarez测试,Menou-Rauscher类地测试和merlisschneider潮汐锁定地球测试。定性上,LFRic-Atmosphere与其他数值模型基本一致,在总质量、角动量和动能方面均表现出良好的守恒特性。然后,我们通过将LFRic-Atmosphere配置为四种TRAPPIST-1可居住大气比对(THAI)情景,将其与更真实的物理过程(辐射、亚网格尺度混合、对流、云)表示结合使用。这是LFRic-Atmosphere首次应用于已确认的类地系外行星的可能气候。LFRic-Atmosphere在一系列关键气候变量的现有模式范围内再现了泰国情景。我们的工作表明,LFRic-Atmosphere在陆地大气的七个基准测试中表现良好,证明了它在未来系外行星气候研究中的应用。
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Simulations of idealised 3D atmospheric flows on terrestrial planets using LFRic-Atmosphere
Abstract. We demonstrate that LFRic-Atmosphere, a model built using the Met Office's GungHo dynamical core, is able to reproduce idealised large-scale atmospheric circulation patterns specified by several widely used benchmark recipes. This is motivated by the rapid rate of exoplanet discovery and the ever-growing need for numerical modelling and characterisation of their atmospheres. Here we present LFRic-Atmosphere's results for the idealised tests imitating circulation regimes commonly used in the exoplanet modelling community. The benchmarks include three analytic forcing cases: the standard Held–Suarez test, the Menou–Rauscher Earth-like test, and the Merlis–Schneider tidally locked Earth test. Qualitatively, LFRic-Atmosphere agrees well with other numerical models and shows excellent conservation properties in terms of total mass, angular momentum, and kinetic energy. We then use LFRic-Atmosphere with a more realistic representation of physical processes (radiation, subgrid-scale mixing, convection, clouds) by configuring it for the four TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI) scenarios. This is the first application of LFRic-Atmosphere to a possible climate of a confirmed terrestrial exoplanet. LFRic-Atmosphere reproduces the THAI scenarios within the spread of the existing models across a range of key climatic variables. Our work shows that LFRic-Atmosphere performs well in the seven benchmark tests for terrestrial atmospheres, justifying its use in future exoplanet climate studies.
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来源期刊
Geoscientific Model Development
Geoscientific Model Development GEOSCIENCES, MULTIDISCIPLINARY-
CiteScore
8.60
自引率
9.80%
发文量
352
审稿时长
6-12 weeks
期刊介绍: Geoscientific Model Development (GMD) is an international scientific journal dedicated to the publication and public discussion of the description, development, and evaluation of numerical models of the Earth system and its components. The following manuscript types can be considered for peer-reviewed publication: * geoscientific model descriptions, from statistical models to box models to GCMs; * development and technical papers, describing developments such as new parameterizations or technical aspects of running models such as the reproducibility of results; * new methods for assessment of models, including work on developing new metrics for assessing model performance and novel ways of comparing model results with observational data; * papers describing new standard experiments for assessing model performance or novel ways of comparing model results with observational data; * model experiment descriptions, including experimental details and project protocols; * full evaluations of previously published models.
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