气候变化领域集成服务门户(CCPortal): Gravity Wave Source Spectra Appropriation for Mesosphere Lower Thermosphere Using Meteor Radar Observations and GROGRAT Model Simulations

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DOI	10.1029/2020GL089390
	Gravity Wave Source Spectra Appropriation for Mesosphere Lower Thermosphere Using Meteor Radar Observations and GROGRAT Model Simulations
	Pramitha M.; Kumar K.K.; Ratnam M.V.; Praveen M.; Rao S.V.B.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:19
英文摘要	Meteor radar observations of gravity wave momentum fluxes (GWMFs) in the 82–94 km altitude region, which is a part of mesosphere lower thermosphere (MLT), are employed to identify the best fit gravity wave source spectrum using Gravity wave Regional or Global Ray Tracer (GROGRAT) model simulations over a low-latitude location, Tirupati (13.63°N, 79.4°E). GROGRAT model is used to propagate a spectrum of gravity waves from the troposphere to the lower thermosphere. A total number of five gravity wave source spectra with various permutations and combinations are considered for the model simulations and by comparing the model simulated and radar observed gravity wave fields in the 82–94 km region, a best fit source spectrum is identified. The significance of the present study lies in appropriating the gravity wave source spectrum using meteor radar observations for the first time, which will have implications in improving gravity parameterization schemes in global models. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Ionosphere; Radar; Altitude regions; Gravity wave momentum; Lower thermosphere; Mesosphere-lower thermospheres; Model simulation; Parameterization schemes; Permutations and combinations; Source spectrum; Gravity waves; gravity wave; mesosphere; model; observational method; radar; simulation; thermosphere; wave spectrum; Andhra Pradesh; India; Tirupati
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169616
作者单位	Space Physics Laboratory, Vikram Sarabhai Space Centre, Trivandrum, India; National Atmospheric Research Laboratory, Gadanki, India; Department of Mathematics, National Institute of Technology, Calicut, India; Department of Physics, Sri Venkateswara University, Tirupati, India
推荐引用方式 GB/T 7714	Pramitha M.,Kumar K.K.,Ratnam M.V.,et al. Gravity Wave Source Spectra Appropriation for Mesosphere Lower Thermosphere Using Meteor Radar Observations and GROGRAT Model Simulations[J],2020,47(19).
APA	Pramitha M.,Kumar K.K.,Ratnam M.V.,Praveen M.,&Rao S.V.B..(2020).Gravity Wave Source Spectra Appropriation for Mesosphere Lower Thermosphere Using Meteor Radar Observations and GROGRAT Model Simulations.Geophysical Research Letters,47(19).
MLA	Pramitha M.,et al."Gravity Wave Source Spectra Appropriation for Mesosphere Lower Thermosphere Using Meteor Radar Observations and GROGRAT Model Simulations".Geophysical Research Letters 47.19(2020).