ENSO循环对东亚地区平流层臭氧分布的影响

汪明圣; 郭世昌

doi:10.7522/j.issn.1000-0534.2016.00068

高原气象 >

2017 , Vol. 36 >Issue 3: 865 - 874

DOI: https://doi.org/10.7522/j.issn.1000-0534.2016.00068

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ENSO循环对东亚地区平流层臭氧分布的影响

汪明圣 ,
郭世昌

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云南大学大气科学系, 昆明 650091;广东省气候中心, 广州 510610

收稿日期: 2016-02-19

网络出版日期: 2017-06-28

基金资助

国家自然科学基金（41275072）

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Impact of the ENSO Cycle on the Stratospheric Ozone Distribution over East Asia

WANG Mingsheng ,
GUO Shichang

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Department of Atmospheric Science, Yunnan University, Kunming 650091, China;Climate Center of Guangdong Province, Guangzhou 510610, China

Received date: 2016-02-19

Online published: 2017-06-28

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摘要

采用NOAA提供的ONI（Oceanic Niño Index）指数资料与欧洲中心提供的臭氧再分析资料，以滞后相关为切入点，分析了ENSO循环对东亚地区平流层臭氧分布的影响，探讨了ENSO不同位相（El Niño、La Niña）对臭氧场的强迫影响程度，并且用ENSO对剩余环流的影响解释了平流层臭氧变化的动力机制。结果表明：（1）ENSO对东亚地区平流层臭氧的分布有明显的影响，在平流层30 hPa和70 hPa尤为显著，且滞后8个月时二者相关达到最大；（2）El Niño发生8个月后中纬度地区平流层30 hPa的臭氧有所减少，而高纬度臭氧增加，70 hPa则与之相反，同时在低纬度地区70 hPa臭氧减少；La Niña反之；（3）Niño3.4区海温与滞后8个月臭氧的SVD分析结果也有类似的变化；（4）El Niño和La Niña的影响之间有显著的差异，在分别滞后于El Niño和La Niña事件8个月后平流层低层的臭氧含量差异可达-25%以上。（5）ENSO可以通过影响剩余环流的变化，进而影响臭氧分布发生以上的变化。

关键词： ONI; ENSO; 滞后相关; 平流层臭氧; 剩余环流

本文引用格式

汪明圣 , 郭世昌 . ENSO循环对东亚地区平流层臭氧分布的影响[J]. 高原气象, 2017 , 36(3) : 865 -874 . DOI: 10.7522/j.issn.1000-0534.2016.00068

Abstract

The Oceanic Niño Index (ONI) of the NOAA and ozone reanalysis data of ECMWF were used in this paper, the lag correlation method was used to analysis the influence of the ENSO circulation on the distribution of the stratospheric ozone over the East Asia. According to the composite analysis of the ozone anomaly percentage of El Niño and La Niña, the effect of the ENSO to the ozone force was investigated and the change can be explained by the residual circulation. The results show:(1) The effect of the ENSO to the stratospheric ozone was distinct over East Asia, which was more evident at 30 hPa, and 70 hPa than others, and that the correlation coefficient reached the maximum when lag equals 8 months. (2) After the El Niño occurred 8 months, at stratospheric 30 hPa, the ozone had a decrease over the mid-latitude region and an increase over the high latitude. At 70 hPa, the ozone had an increase over the mid-latitude, but a decrease over both high and low latitudes. However, the situation was contrary after La Niña. (3) The similar change has been obtained from the SVD analysis for the SST of Niño3.4 and the ozone 8 month later. (4) The difference of the effect of the El Niño and La Niña to the ozone was significant, and the difference of the ozone content could reach 25% when the El Niño and La Niña had occurred 8 months later. (5) ENSO can modulat the residual circulation, then it can influence the ozone distribution.

Key words： ONI; ENSO; Lag correlation; Stratospheric ozone; Residual circulation

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