气候变化领域集成服务门户(CCPortal): Observational Validation of Parameterized Gravity Waves From Tropical Convection in the Whole Atmosphere Community Climate Model

CCPortal

DOI	10.1029/2020JD033954
	Observational Validation of Parameterized Gravity Waves From Tropical Convection in the Whole Atmosphere Community Climate Model
	Alexander M.J.; Liu C.C.; Bacmeister J.; Bramberger M.; Hertzog A.; Richter J.H.
发表日期	2021
ISSN	2169897X
卷号	126 期号:7
英文摘要	Tropical gravity waves that are generated by convection are generally too small in scale and too high in frequency to be resolved in global climate models, yet their drag forces drive the important global-scale quasi-biennial oscillation (QBO) in the lower stratosphere, and models rely on parameterizations of gravity wave drag to simulate the QBO. We compare detailed properties of tropical parameterized gravity waves in the Whole Atmosphere Community Climate Model version 6 (WACCM6) with gravity waves observed by long-duration superpressure balloons and also compare properties of parameterized convective latent heating with satellite data. Similarities and differences suggest that the WACCM6 parameterizations are excellent tools for representing tropical gravity waves, but the results also suggest detailed changes to the gravity wave parameterization tuning parameter assumptions that would bring the parameterized waves into much better agreement with observations. While WACCM6 currently includes only nonstationary gravity waves from convection, adding gravity waves generated by the steady component of the heating that are stationary relative to moving convective rain cells is likely to improve the simulation of the QBO in the model. The suggested changes have the potential to alleviate common biases in simulated QBO circulations in models. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	convection; gravity waves; latent heating; quasi-biennial oscillation; tropical dynamics
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185373
作者单位	NorthWest Research Associates, Boulder Office, Boulder, CO, United States; Texas A&M University, Corpus ChristieTX, United States; National Center for Atmospheric Research, Boulder, CO, United States; Laboratoire de Meteorologie Dynamique, Palaiseau, France
推荐引用方式 GB/T 7714	Alexander M.J.,Liu C.C.,Bacmeister J.,et al. Observational Validation of Parameterized Gravity Waves From Tropical Convection in the Whole Atmosphere Community Climate Model[J],2021,126(7).
APA	Alexander M.J.,Liu C.C.,Bacmeister J.,Bramberger M.,Hertzog A.,&Richter J.H..(2021).Observational Validation of Parameterized Gravity Waves From Tropical Convection in the Whole Atmosphere Community Climate Model.Journal of Geophysical Research: Atmospheres,126(7).
MLA	Alexander M.J.,et al."Observational Validation of Parameterized Gravity Waves From Tropical Convection in the Whole Atmosphere Community Climate Model".Journal of Geophysical Research: Atmospheres 126.7(2021).