干旱区生态环境知识资源中心(Arid): 全球和东亚地区CH

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	全球和东亚地区CH_4浓度时空分布特征分析
其他题名	The spatial-temporal distribution of CH_4 over globe and East Asia
	张绍会 1; 谢冰 2; 张华 1; 周喜讯 3; 王秋艳 4; 杨冬冬 4
来源期刊	中国环境科学
ISSN	1000-6923
出版年	2018
卷号	38 期号:12 页码:4401-4408
中文摘要	利用最新的AIRS卫星观测资料分析了2002年12月~2016年11月全球和东亚地区(70°~140°E, 10°~55°N)CH_4浓度的时空变化分布特征.研究发现,2003~2016年,全球CH_4年平均浓度从1774.210~(-9)增加到1789.110~(-9),年增长率约为1.110~(-9)/a;东亚地区CH_4年平均浓度从1811.510~(-9)增加到1841.010~(-9),年增长率约为2.010~(-9)/a.在美国西南部、南美洲南部、澳大利亚东南部、中国青藏高原和东北地区等地上空,CH_4浓度增幅比较明显,而在北美洲的东北部上空,CH_4浓度出现负增长.北美洲东北部和俄罗斯东部等地上空CH_4浓度的变化与温度变化呈正相关;如在冬季,该地区温度与周围地区相比更低,同时CH_4浓度更低.本文利用近10a的卫星数据获得了CH_4浓度的垂直廓线,显示不同纬度带CH_4浓度均随着高度的升高逐渐减小,且高纬度地区CH_4浓度减小的最快.近年来,在低纬度地区对流层中低层CH_4浓度变化较为明显.在对流层低层(850hPa),北半球CH_4浓度随着纬度增加逐渐变大;在南半球则随着纬度增加先减小后变大.而在平流层内,CH_4浓度在赤道处最大,且随着纬度的升高逐渐减小.此外,CH_4的浓度分布存在明显的季节变化:在北半球,大部分地区夏季CH_4浓度高于冬季(约2010~(-9)~4010~(-9)),但在撒哈拉沙漠和中国新疆塔里木盆地等地区上空,冬季CH_4浓度高于夏季(约4010~(-9)~6010~(-9)).在冬季,中国四川西部上空的CH_4浓度要比青藏高原上空高(约10010~(-9)~12010~(-9)).
英文摘要	The spatial and temporal characteristics of CH_4 concentration over globe and East Asia (70°~140°E, 10°~55°N) from December 2002 to November 2016 were analyzed based on AIRS (Atmospheric Infrared Sounder) satellite data. The results showed that the global annual mean CH_4 concentration increased from 1774.210~(-9) in 2003 to 1789.110~(-9) in 2016, the growth rate was about 1.110~(-9)/a. While it increased from 1811.510~(-9) to 1841.010~(-9) (the growth rate around 2.010~(-9)/a) in East Asia. In middle and lower troposphere (1000~400hPa), The growth rate of CH_4 concentration increased obviously over the southwestern America, southeastern Australia, southern South America, and the Tibetan Plateau and the northeastern China. However, the growth rate was negative over northeastern North America. Over northeastern North America and eastern Russia, the changes of the annual mean CH_4 concentration and temperature had a positive correlation. For example, in winter, the temperature in these regions was lower than that of surrounding areas, and the CH_4 concentration was lower than that of surrounding areas, too. The vertical profile of CH_4 concentration was obtained by recent 10-year satellite data in this paper. The results showed that at different latitudes, the CH_4 concentration gradually decreased with the increase of altitude, and the fastest decrease happened in the high latitudes. In the middle and lower troposphere of the low latitudes, the average CH_4 concentration changed obviously. In the lower troposphere (850hPa), the CH_4 concentration gradually increased with the increase of latitudes in the Northern Hemisphere, and decreased first and then increased in the Southern Hemisphere. In the stratosphere, the CH_4 concentration was largest over the equator, and gradually decreased as the latitude increased. Additionally, there was obvious seasonal change in the distribution of CH_4 concentration. In the lower troposphere, over most of the regions in the Northern Hemisphere, the average CH_4 concentration was higher in summer than it in winter. However, over the Sahara Desert and Tarim Basin in China, the average CH_4 concentration was higher in winter than it in summer. In winter, the CH_4 concentration in the western Sichuan Province was much higher than it in the Tibetan Plateau (10010~(-9)~12010~(-9)).
中文关键词	时空分布 ; 季节变化
英文关键词	AIRS CH_4 AIRS CH_4 spatial and temporal distribution seasonal change
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:6390920
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238681
作者单位	1.南京信息工程大学;;中国气象科学研究院, 气象灾害预报预警与评估协同创新中心;;灾害天气国家重点实验室, 南京;;, 江苏;;北京 210044;;100081, 中国; 2.国家气候中心, 中国气象局气候研究开放实验室, 北京 100081, 中国; 3.中国气象科学研究院, 灾害天气国家重点实验室, 北京 100081, 中国; 4.南京信息工程大学, 气象灾害预报预警与评估协同创新中心, 南京, 江苏 210044, 中国
推荐引用方式 GB/T 7714	张绍会,谢冰,张华,等. 全球和东亚地区CH_4浓度时空分布特征分析[J],2018,38(12):4401-4408.
APA	张绍会,谢冰,张华,周喜讯,王秋艳,&杨冬冬.(2018).全球和东亚地区CH_4浓度时空分布特征分析.中国环境科学,38(12),4401-4408.
MLA	张绍会,et al."全球和东亚地区CH_4浓度时空分布特征分析".中国环境科学 38.12(2018):4401-4408.