Gravity wave characteristics in the middle atmosphere during the CESAR campaign at Palma de Mallorca in 2011/2012: Impact of extratropical cyclones and cold fronts

被引：8

作者：

Kramer, R. ^{[1
]}

Wuest, S. ^{[1
]}

Schmidt, C. ^{[1
]}

Bittner, M. ^{[1
,2
]}

机构：

[1] German Aerosp Ctr DLR DFD, D-82234 Wessling, Germany

[2] Univ Augsburg, D-86135 Augsburg, Germany

来源：

JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS | 2015年 / 128卷

关键词：

Gravity waves; Energy density; Momentum flux; Extratropical cyclone; MOMENTUM FLUX; LOWER STRATOSPHERE; ROTATIONAL TEMPERATURES; VERTICAL PROPAGATION; FREQUENCY; ENERGY; PARAMETERIZATION; VARIABILITY; SATURATION; ADELAIDE;

D O I：

10.1016/j.jastp.2015.03.001

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Based on a measuring campaign which was carried out at Mallorca (39.6 degrees N, 2.7 degrees E) as cooperation between Agenda Estatal de Meteorologia (AEMET) and Deutsches Zentrum fur Luft- und Raumfahrt, engl. 'German Aerospace Center' (DLR) in 2011/2012 (September-January), 143 radiosondes (day and night) providing vertical temperature and wind profiles were released. Additionally, nocturnal mesopause temperature measurements with a temporal resolution of about 1 mm were conducted by the infrared (IR) Ground-based Infrared P-branch Spectrometer (GRIPS) during the campaign period. Strongly enhanced gravity wave activity in the lower stratosphere is observed which can be attributed to a hurricane-like storm (so-called Medicane) and to passing by cold fronts. Statistical features of gravity wave parameters including energy densitiy and momentum fluxes are calculated. Gravity wave momentum fluxes turned out being up to five times larger during severe weather. Moreover, gravity wave horizontal propagation characteristics are derived applying hodograph and Stokes parameter analysis. Preferred directions are of southeast and northwest due to prevailing wind directions at Mallorca. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：8 / 23

页数：16