globalchange  > 气候变化与战略
CSCD记录号: CSCD:5034660
论文题名:
对流层气溶胶的直接气候效应对平流层的影响
其他题名: Direct Effects of Tropospheric Aerosols on Stratospheric Climate
作者: 宋刘明1; 刘煜2; 朱彬1; 李维亮2
刊名: 应用气象学报
ISSN: 1001-7313
出版年: 2014
卷: 25, 期:1, 页码:118-127
语种: 中文
中文关键词: 气溶胶 ; 直接气候效应 ; 行星波 ; 平流层
英文关键词: aerosol ; direct climate effect ; planetary wave ; stratosphere
WOS学科分类: MULTIDISCIPLINARY SCIENCES
WOS研究方向: Science & Technology - Other Topics
中文摘要: 通过WACCM-3模式中气溶胶光学厚度与卫星资料的对比发现,模式可以很好地再现全球气溶胶的主要分布特征,但在一些区域还存在数值上的差异。利用数值试验研究对流层气溶胶的直接气候效应对平流层气候的影响,结果表明:对流层气溶胶对平流层气候有明显影响,平流层化学过程在这一影响中起重要作用,而对流层气溶胶对平流层辐射的影响不是其直接气候效应对平流层影响的主要原因。其机制可能是对流层气溶胶改变对流层的辐射平衡,影响对流层的温度和大气环流,进而影响行星波的上传,使得平流层气候发生变化;影响区域主要位于高纬度和极地地区,南半球的变化比北半球大,温度变化最大达10 K,纬向风变化最大可达12 m/s,臭氧体积分数最多减少0.8*10~(-6)。
英文摘要: The comparison between satellite data and WACCM-3 model simulated results shows that simulated results are well consistent with satellite data in central Africa,the Arabian Peninsula,Indian subcontinent, and most parts of China,but in south central Africa,Caribbean and Europe,the model results are lower. In short, model results can well reproduce the global distribution of aerosols, but numerical difference exists in some areas. Simulation indicates that changes of stratospheric temperature are neither caused by changes of stratospheric short-wave radiation nor decided by the changes of long-wave radiation. The changes of stratospheric temperature are not caused by the tropospheric aerosol effect but the results of dynamic process, and the changes of longwave radiative heating rate are in response to temperature changes and mitigate the change. The process of stratospheric chemical, dynamic and radiation process are tightly coupled together. By comparison,the experiment group A including stratospheric chemical process and experiment group B not including stratospheric chemical process, it shows that the changes of temperature and wind are different in the tropospheric aerosols direct effect on stratosphere. The stratospheric chemical process is of vital importance on the tropospheric aerosols effects on stratospheric climate. Stratospheric chemical process has different effects in different seasons and in different regions,polar and high-altitude regions are considered to be mostly affected, in addition,stratospheric chemical process also has great influence on the upper stratosphere. The temperature variation can reach 6 K at the most, and zonal wind variation can also reach 12 m/s. The tropospheric aerosols influence the tropospheric radiative balance, tropospheric temperature atmospheric circulation and EP.flux, and changes in EP flux indicate the planetary wave propagation chan- ges. Planetary wave propagation changes make the stratospheric climate change: Stratospheric tempera ture, and wind field change,stratospheric ozone and radiation and dynamic processes are closely linked and influenced by each other,the temperature and wind changes will influence the concentration of ozone. Polar and high-latitude regions are considered to be mostly affected, and the impact on southern high latitude's is greater than that on* northern high latitudes. The temperature variation can reach 10 K at the most,zonal wind variation can also reach 12 m/s and ozone mixing ratio can decline for 0.8 *10~(-6) at the most at 20 hPa in the lower Antarctic stratosphere, while in most other areas the temperature change does not exceed 1 K.
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/148563
Appears in Collections:气候变化与战略

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作者单位: 1.南京信息工程大学大气物理学院, 南京, 江苏 210044, 中国
2.中国气象科学研究院, 北京 100081, 中国

Recommended Citation:
宋刘明,刘煜,朱彬,等. 对流层气溶胶的直接气候效应对平流层的影响[J]. 应用气象学报,2014-01-01,25(1):118-127
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