Characterization of airborne carbonate over a site near Asian dust source regions during spring 2002 and its climatic and environmental significance

被引:126
作者
Cao, JJ [1 ]
Lee, SC
Zhang, XY
Chow, JC
An, ZS
Ho, KF
Watson, JG
Fung, K
Wang, YQ
Shen, ZX
机构
[1] Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quatemary Geol, Xian, Peoples R China
[2] Hong Kong Polytech Univ, Dept Civil & Struct Engn, Res Ctr Environm Technol & Management, Hong Kong, Hong Kong, Peoples R China
[3] Univ Nevada, Desert Res Inst, Reno, NV 89506 USA
[4] Atmoslyt Inc, Calabasas, CA USA
关键词
D O I
10.1029/2004JD005244
中图分类号
P4 [大气科学(气象学)];
学科分类号
0706 ; 070601 ;
摘要
[1] During spring 2002, three dust storm events were monitored by filter sampling in Xi'an near an Asian dust source region of northwest China. The carbonate (CO32-) fraction was determined by sample acidification and thermal evolution. The CO32- accounted for 8.0 +/- 0.8% of particles with aerodynamic diameter less than or equal to2.5 mm (PM2.5) during dust storms and 4.7 +/- 3.0% of PM2.5 between storms. The ratios of calcium to carbonate carbon were consistent with those of calcite (CaCO3). The delta(13)C and delta(18)O abundances in dust storm samples were -2.7 +/- 0.7parts per thousand and -5.8 +/- 1.5parts per thousand, which differed from -8.3 +/- 1.9parts per thousand for delta(13)C and -10.8 +/- 2.0parts per thousand for delta(18)O during normal conditions. The delta(13)C is positively correlated with delta(18)O values (r = 0.78). This first measurement of isotopic abundance in Asian dust indicates the potential to quantify its contribution at distant locations using receptor models. By increasing the alkalinity of ocean water in the Pacific Ocean and buffering the atmospheric acidity of east Asia, the large amounts of airborne CO32- ( as high as 44.8 Tg yr(-1)) entrained by Asian dust may provide an important atmospheric alkaline carbon reservoir for large-scale climatic and environmental changes.
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页码:1 / 8
页数:8
相关论文
共 61 条
[1]   Chemical and optical characterization of aerosols measured in spring 2002 at the ACE-Asia supersite, Zhenbeitai, China [J].
Alfaro, SC ;
Gomes, L ;
Rajot, JL ;
Lafon, S ;
Gaudichet, A ;
Chatenet, B ;
Maille, M ;
Cautenet, G ;
Lasserre, F ;
Cachier, H ;
Zhang, XY .
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2003, 108 (D23)
[2]   PHYSICOCHEMICAL CHARACTERISTICS OF DUST AEROSOLS DEPOSITED DURING THE SOVIET-AMERICAN EXPERIMENT (TAJIKISTAN, 1989) [J].
ANDRONOVA, AV ;
GOMES, L ;
SMIRNOV, VV ;
IVANOV, AV ;
SHUKUROVA, LM .
ATMOSPHERIC ENVIRONMENT PART A-GENERAL TOPICS, 1993, 27 (16) :2487-2493
[3]  
[Anonymous], [No title captured], DOI DOI 10.1029/96JD01818
[4]  
[Anonymous], P 2 INT CLEAN AIR C
[5]   Eolian dust and climate: relationships to sources, tropospheric chemistry, transport and deposition [J].
Arimoto, R .
EARTH-SCIENCE REVIEWS, 2001, 54 (1-3) :29-42
[6]   Performance evaluation of the portable MiniVOL particulate matter sampler [J].
Baldauf, RW ;
Lane, DD ;
Marotz, GA ;
Wiener, RW .
ATMOSPHERIC ENVIRONMENT, 2001, 35 (35) :6087-6091
[7]   Asian provenance of glacial dust (stage 2) in the Greenland Ice Sheet Project 2 Ice Core, Summit, Greenland [J].
Biscaye, PE ;
Grousset, FE ;
Revel, M ;
VanderGaast, S ;
Zielinski, GA ;
Vaars, A ;
Kukla, G .
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 1997, 102 (C12) :26765-26781
[8]   VERTICAL OCEANIC NUTRIENT FRACTIONATION AND GLACIAL INTERGLACIAL CO2 CYCLES [J].
BOYLE, EA .
NATURE, 1988, 331 (6151) :55-56
[9]   THE CAUSE OF THE GLACIAL TO INTERGLACIAL ATMOSPHERIC CO2 CHANGE: A POLAR ALKALINITY HYPOTHESIS [J].
Broecker, Wallace S. ;
Peng, Tsung-Hung .
GLOBAL BIOGEOCHEMICAL CYCLES, 1989, 3 (03) :215-239
[10]   Airborne minerals and related aerosol particles:: Effects on climate and the environment [J].
Buseck, PR ;
Pósfai, M .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1999, 96 (07) :3372-3379