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A Quantitative Estimation of the Transport of Surface Emissions

from Different Regions into the Stratosphere

 

Fei Xie^{1, 2}, Jianping Li^{1, 2}, Wenshou Tian³, Dingzhu Hu⁴, Jiankai Zhang³,

Jianchuan Shu⁵ and Chunxiao Wang³

 

1 College of Global Change and Earth System Science, Beijing Normal University, Beijing, China

2 Joint Center for Global Change Studies, Beijing, China

3 Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, China

4 Key Laboratory of Meteorological Disaster of Ministry of Education,

Nanjing University of Information Science & Technology, Nanjing, China

5 Institute of Plateau Meteorology, China Meteorological Administratin, Chengdu, China

 

Abstract

The transport of chemical compounds from surface emissions into the stratosphere is very important for stratospheric, and even global, climate change. However, the lack of observational data makes it difficult to trace these emissions back to specific regions. This study uses numerical simulations to investigate the transport of surface emissions from high population density regions into the stratosphere. In March, April and May, Southeast Asia and Australia tracers contribute ~⅓ and ~¼ of total tracers entering the stratosphere, respectively. In June, July and August, Southwest Asia contributes ~½ of the total, which is far more than the contribution of all other source regions. In September, October and November, South America and Southeast Asia each accounts for ~¼ of the total tracer budget. In December, January and February, Australia and Southeast Asia each accounts for ~¼ of all tracers entering the stratosphere. A further quantitative estimation illustrates that the average proportion of a tracer entering the stratosphere compared with its total release is 2.6% for Southeast Asia, followed by 1.7% for Australia, 1.4% for Southwest Asia, 1.0% for Africa, 1.0% for South America, 0.9% for East Asia, 0.7% for North America, and 0.3% for Europe.

 

PUBLISHED BY: SOLA,  12, 65−69, doi:10.2151/sola.2016-015

 

SOURCE: https://www.jstage.jst.go.jp/article/sola/12/0/12_2016-015/_article