气候变化领域集成服务门户(CCPortal): Multidecadal Measurements of UTLS Gravity Waves Derived From Commercial Flight Data

CCPortal

DOI	10.1029/2020JD033445
	Multidecadal Measurements of UTLS Gravity Waves Derived From Commercial Flight Data
	Wright C.J.; Banyard T.P.
发表日期	2020
ISSN	2169897X
卷号	125 期号:19
英文摘要	Gravity waves (GWs) are key drivers of atmospheric dynamics, with major impacts on climate and weather processes. However, they are challenging to measure in observational data, and as a result no large-area multidecadal GW time series yet exist. This has prevented us from quantifying the interactions between GWs and long–timescale climate processes. Here, we exploit temperatures measured by commercial aircraft since 1994 as part of the In-Service Aircraft for a Global Observing System (IAGOS) atmospheric chemistry research program to produce a novel 26-year time series of upper troposphere/lower stratosphere (UTLS) GW measurements across most of the Northern Hemisphere. We analyze 90,342 flight hours (76.2 million flight kilometers) of data, typically at a temporal resolution of seconds and with high temperature precision. We show that GW activity in the Northern Hemisphere UTLS is consistently strongest north of and above the upper tropospheric jet. We also show that GW sources not typically observed in stratospheric data but assumed in model schemes, such as the Rocky Mountains, are visible at these altitudes, suggesting that wave momentum from these sources is deposited specifically between ∼200 and 50 hPa. Our data show no significant impact of the Quasi-Biennial Oscillation, the Northern Annular Mode, or climate change. However, we do see strong evidence of links with the El Niño–Southern Oscillation, which modulates the measured GW signal by ∼25%, and weak evidence of links with the 11-year solar cycle. These results have important implications for atmospheric process modeling and for understanding large-scale climate teleconnections. ©2020. The Authors.
英文关键词	aircraft; gravity waves; in situ; lower stratosphere; upper troposphere
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/185721
作者单位	Centre for Space, Atmospheric and Oceanic Science, University of Bath, Bath, United Kingdom
推荐引用方式 GB/T 7714	Wright C.J.,Banyard T.P.. Multidecadal Measurements of UTLS Gravity Waves Derived From Commercial Flight Data[J],2020,125(19).
APA	Wright C.J.,&Banyard T.P..(2020).Multidecadal Measurements of UTLS Gravity Waves Derived From Commercial Flight Data.Journal of Geophysical Research: Atmospheres,125(19).
MLA	Wright C.J.,et al."Multidecadal Measurements of UTLS Gravity Waves Derived From Commercial Flight Data".Journal of Geophysical Research: Atmospheres 125.19(2020).