Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-9697-2017 |
Sources of springtime surface black carbon in the Arctic: an adjoint analysis for April 2008 | |
Qi, Ling1,2; Li, Qinbin1,2; Henze, Daven K.3; Tseng, Hsien-Liang1,2; He, Cenlin1,2 | |
2017-08-15 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:15 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | We quantify source contributions to springtime (April 2008) surface black carbon (BC) in the Arctic by interpreting surface observations of BC at five receptor sites (Denali, Barrow, Alert, Zeppelin, and Summit) using a global chemical transport model (GEOS-Chem) and its adjoint. Contributions to BC at Barrow, Alert, and Zeppelin are dominated by Asian anthropogenic sources (40-43 %) before 18 April and by Siberian open biomass burning emissions (29-41 %) afterward. In contrast, Summit, a mostly free tropospheric site, has predominantly an Asian anthropogenic source contribution (24-68 %, with an average of 45 %). We compute the adjoint sensitivity of BC concentrations at the five sites during a pollution episode (20-25 April) to global emissions from 1 March to 25 April. The associated contributions are the combined results of these sensitivities and BC emissions. Local and regional anthropogenic sources in Alaska are the largest anthropogenic sources of BC at Denali (63% of total anthropogenic contributions), and natural gas flaring emissions in the western extreme north of Russia (WENR) are the largest anthropogenic sources of BC at Zeppelin (26 %) and Alert (13 %). We find that long-range transport of emissions from Beijing-Tianjin-Hebei (also known as Jing-Jin-Ji), the biggest urbanized region in northern China, contribute significantly (similar to 10 %) to surface BC across the Arctic. On average, it takes similar to 12 days for Asian anthropogenic emissions and Siberian biomass burning emissions to reach the Arctic lower troposphere, supporting earlier studies. Natural gas flaring emissions from the WENR reach Zeppelin in about a week. We find that episodic transport events dominate BC at Denali (87 %), a site outside the Arctic front, which is a strong transport barrier. The relative contribution of these events to surface BC within the polar dome is much smaller (similar to 50% at Barrow and Zeppelin and similar to 10% at Alert). The large contributions from Asian anthropogenic sources are predominately in the form of "chronic" pollution (similar to 40% at Barrow, 65% at Alert, and 57% at Zeppelin) on about a 1-month timescale. As such, it is likely that previous studies using 5- or 10-day trajectory analyses strongly underestimated the contribution from Asia to surface BC in the Arctic. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000407636200001 |
WOS关键词 | MIXED-PHASE CLOUDS ; GEOS-CHEM ; SENSITIVITY-ANALYSIS ; FIRE OCCURRENCE ; DRY DEPOSITION ; CLIMATE-CHANGE ; DIURNAL FIRE ; EMISSIONS ; TRANSPORT ; AEROSOL |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/19471 |
专题 | 地球科学 |
作者单位 | 1.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90095 USA; 2.Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Los Angeles, CA 90095 USA; 3.Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA |
推荐引用方式 GB/T 7714 | Qi, Ling,Li, Qinbin,Henze, Daven K.,et al. Sources of springtime surface black carbon in the Arctic: an adjoint analysis for April 2008[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(15). |
APA | Qi, Ling,Li, Qinbin,Henze, Daven K.,Tseng, Hsien-Liang,&He, Cenlin.(2017).Sources of springtime surface black carbon in the Arctic: an adjoint analysis for April 2008.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(15). |
MLA | Qi, Ling,et al."Sources of springtime surface black carbon in the Arctic: an adjoint analysis for April 2008".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.15(2017). |
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