气候变化领域集成服务门户(CCPortal): Mean Climate and Tropical Rainfall Variability in Aquaplanet Simulations Using the Model for Prediction Across Scales-Atmosphere

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DOI	10.1029/2020MS002102
	Mean Climate and Tropical Rainfall Variability in Aquaplanet Simulations Using the Model for Prediction Across Scales-Atmosphere
	Rios-Berrios R.; Medeiros B.; Bryan G.H.
发表日期	2020
ISSN	19422466
卷号	12 期号:10
英文摘要	Aquaplanet experiments are important tools for understanding and improving physical processes simulated by global models; yet, previous aquaplanet experiments largely differ in their representation of subseasonal tropical rainfall variability. This study presents results from aquaplanet experiments produced with the Model for Prediction Across Scales-Atmosphere (MPAS-A)—a community model specifically designed to study weather and climate in a common framework. The mean climate and tropical rainfall variability simulated by MPAS-A with varying horizontal resolution were compared against results from a recent suite of aquaplanet experiments. This comparison shows that, regardless of horizontal resolution, MPAS-A produces the expected mean climate of an aquaplanet framework with zonally symmetric but meridionally varying sea-surface temperature. MPAS-A, however, has a stronger signal of tropical rainfall variability driven by convectively coupled equatorial waves. Sensitivity experiments with different cumulus parameterizations, physics packages, and vertical grids consistently show the presence of those waves, especially equatorial Kelvin waves, in phase with lower-tropospheric convergence. Other models do not capture such rainfall-kinematics phasing. These results suggest that simulated tropical rainfall variability depends not only on the cumulus parameterization (as suggested by previous studies) but also on the coupling between physics and dynamics of climate and weather prediction models. © 2020. The Authors.
语种	英语
scopus关键词	Clouds; Oceanography; Predictive analytics; Rain; Surface waters; Tropics; Weather forecasting; Community model; Cumulus parameterization; Equatorial waves; Horizontal resolution; Physical process; Sea surface temperature (SST); Tropical rainfall; Weather prediction model; Climate models; equatorial wave; model; prediction; rainfall; simulated annealing; simulation; tropical environment; troposphere
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156612
作者单位	National Center for Atmospheric Research, Boulder, CO, United States
推荐引用方式 GB/T 7714	Rios-Berrios R.,Medeiros B.,Bryan G.H.. Mean Climate and Tropical Rainfall Variability in Aquaplanet Simulations Using the Model for Prediction Across Scales-Atmosphere[J],2020,12(10).
APA	Rios-Berrios R.,Medeiros B.,&Bryan G.H..(2020).Mean Climate and Tropical Rainfall Variability in Aquaplanet Simulations Using the Model for Prediction Across Scales-Atmosphere.Journal of Advances in Modeling Earth Systems,12(10).
MLA	Rios-Berrios R.,et al."Mean Climate and Tropical Rainfall Variability in Aquaplanet Simulations Using the Model for Prediction Across Scales-Atmosphere".Journal of Advances in Modeling Earth Systems 12.10(2020).