Response of Total Column Ozone at High Latitudes to Sudden Stratospheric Warmings

被引：1

作者：

Hocke, Klemens ^{[1
,2
]}

Sauvageat, Eric ^{[1
,2
]}

Bernet, Leonie ^{[3
]}

机构：

[1] Univ Bern, Inst Appl Phys, CH-3012 Bern, Switzerland

[2] Univ Bern, Oeschger Ctr Climate Change Res, CH-3012 Bern, Switzerland

[3] NILU Norwegian Inst Air Res, N-2027 Kjeller, Norway

来源：

ATMOSPHERE | 2023年 / 14卷 / 03期

关键词：

total column ozone; brewer spectrophotometer; meteorological reanalysis; sudden stratospheric warming; composite analysis; stratosphere-troposphere exchange; IMPACT;

D O I：

10.3390/atmos14030450

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The total column ozone (TCO) at northern high latitudes is increased over a course of 1-2 months after a major sudden stratospheric warming as a consequence of enhanced ozone eddy transport and diffusive ozone fluxes. We analyzed ground-based measurements of TCO from Oslo, Andoya and Ny angstrom lesund from 2000 to 2020. During this time interval, 15 major sudden stratospheric warmings (SSWs) occurred. The observed TCO variations are in a good agreement with those of ECMWF Reanalysis v5 (ERA5), showing that TCO from ERA5 is reliable, even during dynamically active periods. ERA5 has the advantage that it has no data gaps during the polar night. We found that TCO was increased by up to 190 DU after the SSW of February 2010, over one month. The composite analysis of the 15 SSWs provided the result that TCO is increased on average by about 50 DU over one month after the central date of the SSW.

引用

页数：8

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