HCFC-22 emissions at global and regional scales between 1995 and2010: Trends and variability

被引：17
|
作者：
Fortems-Cheiney, A. [1 ]
Chevallier, F. [1 ]
Saunois, M. [1 ]
Pison, I. [1 ]
Bousquet, P. [1 ]
Cressot, C. [1 ]
Wang, H. J. [2 ]
Yokouchi, Y. [3 ]
Artuso, F. [4 ]
机构：
[1] CEA, CNRS, UVSQ, Lab Sci Climat & Environnement,Inst Pierre Simon, Gif Sur Yvette, France
[2] Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA
[3] Natl Inst Environm Studies, Tsukuba, Ibaraki, Japan
[4] ENEA, Italian Natl Agcy New Technol Energy & Sustainabl, Rome, Italy
来源：
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES | 2013年 / 118卷 / 13期
关键词：
HCFC22; inversion; METHYL CHLOROFORM; TROPOSPHERIC OH; REMOTE SITE; EAST-ASIA; DECADES; INVERSION; SENSITIVITY;
D O I：
10.1002/jgrd.50544
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
HCFC-22 (CHClF2, chlorodifluoromethane) is an ozone-depleting substance, the consumption of which is controlled under the Montreal Protocol. Within a Bayesian inversion framework, we use measurements of HCFC-22 atmospheric concentrations to constrain estimates of HCFC-22 emissions, at the grid point 3.75 degrees x 2.5 degrees and 8 day resolution, from January 1995 to December 2010. Starting from a new gridded bottom-up inventory which is then optimized, our method shows continuously rising global emissions, from 182 +/- 11 Gg in 1995 to the maximum of 410 +/- 9 Gg in 2009. This is mainly due to an increase of emissions in developing regions, particularly in Eastern Asia, and occurs despite the current phase-out in developed countries. The high temporal resolution of our inversion (8 day) allows to reveal some of the emission seasonality, the global posterior sources ranging from 25 Gg/month in November to 42 Gg/month in July, for example, in 2010.
引用
收藏
页码：7379 / 7388
页数：10
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