香格里拉区域大气本底站地面臭氧浓度的变化特征

doi:10.11870/cjlyzyyhj201508021

长江流域资源与环境 >> 2015, Vol. 24 >> Issue (08): 1412-1417.doi: 10.11870/cjlyzyyhj201508021

香格里拉区域大气本底站地面臭氧浓度的变化特征

李邹^1,2, 林伟立^2,3, 徐晓斌², 张万诚⁴

1. 云南省迪庆州气象局, 云南迪庆 674400;
2. 中国气象科学研究院, 北京 100081;
3. 中国气象局气象探测中心, 北京 100081;
4. 云南省气象科学研究所, 云南昆明 650034

收稿日期:2014-10-24 修回日期:2015-12-29 出版日期:2015-08-20
作者简介:李邹(1983~),男,工程师,主要从事大气成分资料分析研究.E-mail:lizouv6@126.com
基金资助:
NSFC-云南联合基金重点项目"云南极端干旱气候的形成机理研究"(U1133603);公益性行业(气象)科研专项项目"大气成分观测业务规范及数据综合处理系统研究"(GYHY201206037)资助

CHARACTERISTICS OF THE SURFACE OZONE AT SHANGRI-LA REGIONAL ATMOSPHERIC BACKGROUND STATION

LI Zou^1,2, LIN Wei-li^2,3, XU Xiao-bin², ZHANG Wan-cheng⁴

1. Diqing Meteorological Bureau, Yunnan province, Diqing 674400, China;
2. Chinese Academy of Meteorological Sciences, Beijing 100081, China;
3. Meteorological Observation Centre of China Meteorological Administration, Beijing 100081, China;
4. Institute of Meteorological Sciences, Yunnan Province, Kunming 650034, China

Received:2014-10-24 Revised:2015-12-29 Online:2015-08-20
Contact: 张万诚 E-mail:hhzth@sina.com E-mail:hhzth@sina.com

摘要/Abstract

摘要： 对2009年香格里拉区域大气本底站地面臭氧观测结果进行分析,研究其浓度水平、变化特征、影响因素及其区域代表性。结果表明:香格里拉站地面O₃月均值浓度在21.8~57.7 ppb,年平均值为38.0±12.1 ppb,在春季最高,平均值为54.1 ppb,在夏季最低,平均值为28.0 ppb。O₃小时均值浓度超过60 ppb的小时数占总有效小时数的6.6%,超过40 ppb的小时数占43.0%。与相近纬度中国东部地区区域大气本底站地面臭氧观测结果相比,香格里拉站体现出不同的O₃日变化和季节变化特征,具有特殊的地域特征。影响香格里拉站的气流主要来自于其西南方向,3 d的后向轨迹可追溯到孟加拉湾东北部地区。偏南的气流主要出现在夏秋季节,O₃浓度相对低,偏北的气流以冬春为主,O₃浓度相对高。

关键词: 区域本底, 臭氧, 青藏高原

Abstract: The observation results of the surface ozone (O₃) at Shangri-la regional atmospheric background station in 2009 were studied and the concentration level, the seasonal and diurnal variation, the affecting factors and the regional representativeness were presented. The monthly O₃ at the station varied from 21.8 ppb to 57.7 ppb. The yearly average value was 38.0±12.1 ppb, with a peak value in spring (54.1 ppb) and a valley value in summer (28.0 ppb). The hours with the hourly concentration larger than 60 ppb and larger than 40 ppb accounted for 6.6% and 43.0% of the total observation hours, respectively. When compared with the observation results at the two regional atmospheric background stations with a similar latitude located in the eastern China, it showed a different diurnal and seasonal variation pattern of O₃ at Shangri-la station, reflecting a unique ecosystem and environmental conditions surrounded. The airflow influencing the station is mainly from the southwest direction, which can be from as far as the northeast area in Bay of Bengal under a 3-days moving trajectory. The airflow coming from the south mainly occurred in summer-autumn period with a relatively lower ozone concentration and the airflow coming from the north mainly occurred in winter-spring period with a relatively higher ozone values.

Key words: regional background, ozone, Tibetan Plateau

中图分类号:

TP79

李邹, 林伟立, 徐晓斌, 张万诚. 香格里拉区域大气本底站地面臭氧浓度的变化特征[J]. 长江流域资源与环境, 2015, 24(08): 1412-1417.

LI Zou, LIN Wei-li, XU Xiao-bin, ZHANG Wan-cheng. CHARACTERISTICS OF THE SURFACE OZONE AT SHANGRI-LA REGIONAL ATMOSPHERIC BACKGROUND STATION[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2015, 24(08): 1412-1417.

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