Export of atmospheric mercury from Asia

被引:293
作者
Jaffe, D [1 ]
Prestbo, E
Swartzendruber, P
Weiss-Penzias, P
Kato, S
Takami, A
Hatakeyama, S
Kajii, Y
机构
[1] Univ Washington Bothell, Interdisciplinary Arts & Sci, Bothell, WA 98011 USA
[2] Frontier Geosci Inc, Seattle, WA USA
[3] Tokyo Metropolitan Univ, Fac Engn, Tokyo 158, Japan
[4] Natl Inst Environm Studies, Div Atmospher Environm, Tsukuba, Ibaraki, Japan
关键词
mercury; Asia; emissions; carbon monoxide;
D O I
10.1016/j.atmosenv.2005.01.030
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Emissions inventories indicate that Asian Hg sources are more than 50% of the global anthropogenic total. However, few measurements have been made to verify these large emissions. In this paper, we report on measurements of mercury from two sites during spring 2004 which received Asian outflow: Hedo Station, Okinawa (HSO), Japan and the Mt. Bachelor Observatory (MBO) in central Oregon, USA. At both sites, export of atmospheric mercury from China and East Asia was verified by the observations and meteorological data. The mean Hg-0 concentration we observed at HSO was 2.04 ng m(-3), which is significantly higher than the global background. Measurements of reactive gaseous mercury and particulate mercury at HSO found relatively little outflow of these compounds from Asia, generally less than 3% of the total mercury. By examining the correlation of Hg-0 to carbon monoxide during outflow events, we have derived an enhancement ratio, which should reflect the ratio of these compounds in the source region. During outflow from Asia, the mean Hg-0/CO molar enhancement ratio we observed at HSO was 6.2 x 10(-7), which is nearly twice the expected ratio based on emissions estimates from China. During one episode of long-range transport from Asia to the MBO, we found a very similar ratio of Hg-0/CO to that observed at HSO and a similar ratio was also reported by Friedli et al. (2004, Journal of Geophysical Research 109, D19 S25) downwind of Shanghai. Thus the ratio of Hg-0/CO appears to be a good tracer of Asian industrial outflow. Using the Hg-0/CO ratio and a recent inventory for CO emissions, we calculate Hg-0 emissions from Asia of 1460 metric tons year(-1), which is nearly two times the value in the Pacyna et al. (2003, Global mercury emissions. Presented at Long-Range Transport Workshop, Ann Arbor, MI, September 2003) inventory. Several hypotheses are proposed to explain this discrepancy, including an underestimation of the Chinese industrial Hg-0 emissions, natural sources, significant re-emissions of previously deposited Hg and/or a higher ratio of Hg-0/total Hg in the outflow from Asia than in the emission inventory. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:3029 / 3038
页数:10
相关论文
共 40 条
[1]  
[Anonymous], EPA454R00002
[2]   Mercury in the global troposphere: a three-dimensional model study [J].
Bergan, T ;
Gallardo, L ;
Rodhe, H .
ATMOSPHERIC ENVIRONMENT, 1999, 33 (10) :1575-1585
[3]   PHOBEA/ITCT 2002 airborne observations of transpacific transport of ozone, CO, volatile organic compounds, and aerosols to the northeast Pacific:: Impacts of Asian anthropogenic and Siberian boreal fire emissions -: art. no. D23S12 [J].
Bertschi, IT ;
Jaffe, DA ;
Jaeglé, L ;
Price, HU ;
Dennison, JB .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2004, 109 (D23) :1-16
[4]   Evaluating regional emission estimates using the TRACE-P observations [J].
Carmichael, GR ;
Tang, Y ;
Kurata, G ;
Uno, I ;
Streets, DG ;
Thongboonchoo, N ;
Woo, JH ;
Guttikunda, S ;
White, A ;
Wang, T ;
Blake, DR ;
Atlas, E ;
Fried, A ;
Potter, B ;
Avery, MA ;
Sachse, GW ;
Sandholm, ST ;
Kondo, Y ;
Talbot, RW ;
Bandy, A ;
Thorton, D ;
Clarke, AD .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2003, 108 (D21)
[5]   Mercury from combustion sources: A review of the chemical species emitted and their transport in the atmosphere [J].
Carpi, A .
WATER AIR AND SOIL POLLUTION, 1997, 98 (3-4) :241-254
[6]  
Draxler R.R., 2010, HYSPLIT HYBRID SINGL
[7]   International field intercomparison measurements of atmospheric mercury species at Mace Head, Ireland [J].
Ebinghaus, R ;
Jennings, SG ;
Schroeder, WH ;
Berg, T ;
Donaghy, T ;
Guentzel, J ;
Kenny, C ;
Kock, HH ;
Kvietkus, K ;
Landing, W ;
Mühleck, T ;
Munthe, J ;
Prestbo, EM ;
Schneeberger, D ;
Slemr, F ;
Sommar, J ;
Urba, A ;
Wallschläger, D ;
Xiao, Z .
ATMOSPHERIC ENVIRONMENT, 1999, 33 (18) :3063-3073
[8]   IS MERCURY INCREASING IN THE ATMOSPHERE - THE NEED FOR AN ATMOSPHERIC MERCURY NETWORK (AMNET) [J].
FITZGERALD, WF .
WATER AIR AND SOIL POLLUTION, 1995, 80 (1-4) :245-254
[9]  
FRIEDLI HR, 2001, J GEOPHYS RES, V109, pD19
[10]   CORRELATIONS AMONG COMBUSTION EFFLUENT SPECIES AT BARROW, ALASKA - AEROSOL BLACK CARBON, CARBON-DIOXIDE, AND METHANE [J].
HANSEN, ADA ;
CONWAY, TJ ;
STEELE, LP ;
BODHAINE, BA ;
THONING, KW ;
TANS, P ;
NOVAKOV, T .
JOURNAL OF ATMOSPHERIC CHEMISTRY, 1989, 9 (1-3) :283-299