Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-2901-2017 |
A decadal satellite record of gravity wave activity in the lower stratosphere to study polar stratospheric cloud formation | |
Hoffmann, Lars1; Spang, Reinhold2; Orr, Andrew3; Alexander, M. Joan4; Holt, Laura A.4; Stein, Olaf1 | |
2017-02-24 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
![]() |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; England; USA |
英文摘要 | Atmospheric gravity waves yield substantial small-scale temperature fluctuations that can trigger the formation of polar stratospheric clouds (PSCs). This paper introduces a new satellite record of gravity wave activity in the polar lower stratosphere to investigate this process. The record is comprised of observations of the Atmospheric Infrared Sounder (AIRS) aboard NASA's Aqua satellite from January 2003 to December 2012. Gravity wave activity is measured in terms of detrended and noise-corrected 15 mu m brightness temperature variances, which are calculated from AIRS channels that are the most sensitive to temperature fluctuations at about 17-32 km of altitude. The analysis of temporal patterns in the data set revealed a strong seasonal cycle in wave activity with wintertime maxima at mid-and high latitudes. The analysis of spatial patterns indicated that orography as well as jet and storm sources are the main causes of the observed waves. Wave activity is closely correlated with 30 hPa zonal winds, which is attributed to the AIRS observational filter. We used the new data set to evaluate explicitly resolved temperature fluctuations due to gravity waves in the European Centre for Medium-Range Weather Forecasts (ECMWF) operational analysis. It was found that the analysis reproduces orographic and non-orographic wave patterns in the right places, but that wave amplitudes are typically underestimated by a factor of 2-3. Furthermore, in a first survey of joint AIRS and Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) satellite observations, nearly 50 gravity-wave-induced PSC formation events were identified. The survey shows that the new AIRS data set can help to better identify such events and more generally highlights the importance of the process for polar ozone chemistry. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000395116400003 |
WOS关键词 | NITRIC-ACID TRIHYDRATE ; AIRBORNE LIDAR OBSERVATIONS ; HETEROGENEOUS FORMATION ; ARCTIC STRATOSPHERE ; ATMOSPHERIC WAVES ; MLS OBSERVATIONS ; DOWNSLOPE WINDS ; OZONE DEPLETION ; DATA PRODUCTS ; PART 2 |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/18414 |
专题 | 地球科学 |
作者单位 | 1.Forschungszentrum Julich, Julich Supercomp Ctr, Julich, Germany; 2.Forschungszentrum Julich, Inst Energie & Klimaforsch, Julich, Germany; 3.British Antarctic Survey, NERC, Cambridge, England; 4.NorthWest Res Associates Inc, CoRA Off, Boulder, CO USA |
推荐引用方式 GB/T 7714 | Hoffmann, Lars,Spang, Reinhold,Orr, Andrew,et al. A decadal satellite record of gravity wave activity in the lower stratosphere to study polar stratospheric cloud formation[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(4). |
APA | Hoffmann, Lars,Spang, Reinhold,Orr, Andrew,Alexander, M. Joan,Holt, Laura A.,&Stein, Olaf.(2017).A decadal satellite record of gravity wave activity in the lower stratosphere to study polar stratospheric cloud formation.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(4). |
MLA | Hoffmann, Lars,et al."A decadal satellite record of gravity wave activity in the lower stratosphere to study polar stratospheric cloud formation".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.4(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论