Long-Term Ozone Changes Over the Northern Hemisphere Mid-Latitudes for the 1979–2012 Period

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2015-01-01 DOI:10.1080/07055900.2014.990869

J. Krzyścin, B. Rajewska-Więch, Izabela Pawlak

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引用次数: 4

Abstract

Abstract The solar backscattered ultraviolet (SBUV/SBUV-2) merged ozone datasets, version 8.6, including column ozone and ozone profiles for the 1979–2012 period are examined for the 35°N–60°N zonal belt in the northern hemisphere mid-latitudes and four sub-regions: central Europe, continental Europe, North America, and East Asia. The residual long-term patterns for total ozone and ozone profiles are extracted by smoothing the time series of differences between the original and the modelled ozone time series. Modelled ozone is obtained using the standard trend model accounting for ozone variability due to changes in stratospheric halogens and various dynamical factors commonly used in previous ozone trend analyses. Since about 2005 spring and summer total ozone in the troposphere and lower stratosphere has decreased in some regions (central and continental Europe, North America, and the 35°N–60°N zonal belt) compared with modelled ozone. The negative departure from modelled ozone in 2010 is approximately 2–3% of the overall 1979–2012 monthly mean level. It seems that this decrease is a result of yet unknown dynamical processes rather than to chemical destruction because the differences have a longitudinal structure, and total ozone in the upper stratosphere still follows changes in stratospheric halogen loading.

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1979-2012年北半球中纬度地区臭氧的长期变化

对北半球中纬度35°N - 60°N纬向带和中欧、欧洲大陆、北美和东亚4个子区域1979-2012年期间太阳背散射紫外线(SBUV/SBUV-2) 8.6版臭氧数据集的柱臭氧和臭氧剖面图进行了研究。通过对原始臭氧时间序列和模拟臭氧时间序列之间的差异进行平滑处理，提取了总臭氧和臭氧剖面的剩余长期模式。模拟臭氧是使用标准趋势模式得到的，该模式考虑了由于平流层卤素变化和以往臭氧趋势分析中常用的各种动力因素而引起的臭氧变率。自2005年春季和夏季以来，与模拟臭氧相比，某些地区(中欧和欧洲大陆、北美和35°N - 60°N纬向带)对流层和平流层下层的臭氧总量减少了。2010年与模拟臭氧的负偏差约为1979-2012年总体月平均水平的2-3%。这种减少似乎是未知的动力学过程的结果，而不是化学破坏的结果，因为这种差异具有纵向结构，平流层上层的臭氧总量仍然随平流层卤素负荷的变化而变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.