南大洋和热带西太平洋大气中黑碳气溶胶的分布及影响因素

doi:10.3969/j.issn.0253-2778.2020.07.007

中国科学技术大学学报 ›› 2020, Vol. 50 ›› Issue (7): 912-919.DOI: 10.3969/j.issn.0253-2778.2020.07.007

南大洋和热带西太平洋大气中黑碳气溶胶的分布及影响因素

苏辰昀，乐凡阁，康辉，余夏薇

安徽省极地环境与全球变化重点实验室，中国科学技术大学地球和空间科学学院，安徽合肥 230026

收稿日期:2020-04-22 修回日期:2020-07-12 接受日期:2020-07-12 出版日期:2020-07-31 发布日期:2020-07-12
通讯作者: 余夏薇
作者简介:苏辰昀，女，1994年生，硕士生.研究方向：大气环境研究.E-mail:sucy@mail.ustc.edu.cn
基金资助:
国家自然科学基金（41676173）资助.

Factors influencing the amount of atmospheric black carbon over the southern ocean and the Tropical Western Pacific Ocean

SU Chenyun, YUE Fange, Kang Hui, Yu Xiawei

Anhui Province Key Laboratory of Polar Environment and Global Change, School of Earth and Space Science, University of Science and Technology of China, Hefei 230026, China

Received:2020-04-22 Revised:2020-07-12 Accepted:2020-07-12 Online:2020-07-31 Published:2020-07-12

摘要/Abstract

摘要： 黑碳气溶胶（BC）具有直接和间接的气候效应，能够长距离传输，了解BC在全球大气中的浓度和分布对认识气候变化具有重要的意义.在中国第三十四次南极科学考察期间(2017年11月至2018年4月)，利用多角度吸收光度计（MAAP）在线监测方法对航线上空的BC浓度进行了观测，结合氮氧化物（NOx）气体浓度，探讨了BC浓度的分布特征及其影响因素.排除船基影响，南大洋海域中山站至法国站海区、罗斯海海区以及热带西太平洋海域海洋大气BC浓度分别为7.86 ng/m3±15.52 ng/m3、4.73 ng/m3±11.52 ng/m3和17.80 ng/m3±32.71 ng/m3；来源分析表明，罗斯海海区上空BC浓度反映了南极大陆的自然背景，热带西太平洋上空相对较高的BC浓度与陆地来源影响有关，估算的BC干沉降通量远远高于模型模拟的结果.

关键词: 黑碳气溶胶（BC）, 多角度吸收光度计（MAAP）, 南大洋, 热带西太平洋

Abstract: Black carbon (BC) has direct and indirect climatic effects and can be transported over long distances. Knowledge of the concentration and distribution of BC aerosol in the globe is of significant climatic importance. During the 34th Chinese Antarctic Research Expedition (CHINARE), the concentrations of BC were measured by multi-angle absorption photometer (MAAP). The factors influencing the level of BC were investigated based upon NOx and other data measured synchronously. Excluding the influence of ship emissions, the BC concentrations of the ocean areas from Zhongshan station to France station, and the Ross Sea in the Southern Ocean, and the tropical Western Pacific Ocean was 7.86 ng/m3±15.52 ng / m3, 4.73 ng/m3±11.52 ng/m3, and 17.80 ng/m3±32.71 ng / m3, respectively. Further source analysis showed that BC concentrations over the Ross Sea reflect the natural background of the Antarctic continent, the relatively high BC concentrations over the tropical Western Pacific Ocean may be related to the terrestrial sources, and the estimated dry deposition flux of BC aerosol is much higher than the model results.

Key words: black carbon (BC), multi-angle absorption photometer (MAAP), Southern Ocean, tropical Western Pacific Ocean

中图分类号:

X513

苏辰昀，乐凡阁，康辉，余夏薇. 南大洋和热带西太平洋大气中黑碳气溶胶的分布及影响因素[J]. 中国科学技术大学学报, 2020, 50(7): 912-919.

SU Chenyun, YUE Fange, Kang Hui, Yu Xiawei. Factors influencing the amount of atmospheric black carbon over the southern ocean and the Tropical Western Pacific Ocean[J]. Journal of University of Science and Technology of China, 2020, 50(7): 912-919.

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南大洋和热带西太平洋大气中黑碳气溶胶的分布及影响因素

Factors influencing the amount of atmospheric black carbon over the southern ocean and the Tropical Western Pacific Ocean

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