Simulation of the ENSO influence on the extra-tropical middle atmosphere

被引：16

作者：

Ermakova, Tatiana S. ^{[1
]}

Aniskina, Olga G. ^{[1
]}

Statnaia, Irina A. ^{[1
]}

Motsakov, Maxim A. ^{[1
]}

Pogoreltsev, Alexander I. ^{[1
]}

机构：

[1] Russian State Hydrometeorol Univ, Dept Meteorol Forecasts, Voronezhskaya 79, St Petersburg 192007, Russia

来源：

EARTH PLANETS AND SPACE | 2019年 / 71卷 / 1期

基金：

俄罗斯基础研究基金会;

关键词：

El Nino Southern Oscillation (ENSO); Stationary planetary waves (SPWs); Sudden stratospheric warming (SSW); Middle and Upper Atmosphere Model (MUAM); NORTHERN WINTER STRATOSPHERE; STATIONARY PLANETARY-WAVES; LATENT-HEAT RELEASE; EL-NINO; SOUTHERN OSCILLATION; VARIABILITY; TROPOSPHERE; MODEL; NONLINEARITY; PROPAGATION;

D O I：

10.1186/s40623-019-0987-9

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The impact of the El Nio Southern Oscillation (ENSO) on the Northern Hemisphere mid-winter zonal wind, temperature, and stationary planetary waves (SPWs) is evaluated using the Middle and Upper Atmosphere Model and Modern-Era Retrospective Analysis for Research and Applications (MERRA). The composites determined using simulated ensembles and MERRA winters with different ENSO phases show that the mean zonal wind in the stratosphere at higher-middle latitudes is weaker and polar region is warmer, and the activity of SPW1 is higher during El Nio events. The simulated and observed SPW2 amplitude behaves in the opposite way, and it is stronger in the stratosphere during La Nia. The observed changes of SPW1 and SPW2 amplitudes under La Nia and El Nio events should affect an efficiency of the stratosphere-troposphere coupling in different longitudinal sectors through the changes in horizontal distributions of the downward wave activity flux.

引用

页数：9

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