Dissolved organic carbon in summer precipitation and its wet deposition flux in the Mt. Yulong region, southeastern Tibetan Plateau
Dissolved organic carbon in summer precipitation and its wet deposition flux in the Mt. Yulong region, southeastern Tibetan Plateau
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青藏高原东南部玉龙山地区夏季降水溶解有机碳及其湿沉降通量
DOI：
10.1007/s10874-019-9385-8
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发表时间：
2019-02
影响因子：
2
通讯作者：
Shijin Wang
中科院分区：
文献类型：
--
作者：
Hewen Niu;Shichang Kang;Xiaofei Shi;Guotao Zhang;Shijin Wang
溶解有机碳（DOC）是大气-水碳循环系统中重要的有机污染物，对全球气候具有潜在的影响。在这项研究中，204个雨水样品从5个采样站的山。2014年6 - 9月同步采集玉龙地区。对夏季降水中DOC的来源和湿沉降进行了全面调查。五个站的DOC平均浓度范围为0.74至1.31 mg L−1。雨水DOC在365 nm处的质量吸收效率（MAE）为0.43 ± 0.32 m2 g −1。后向轨迹分析表明，西南平流气团占降水事件的46%，而相应的雨水DOC平均浓度为1.25 ± 0.56 mg C L−1。除了本地或区域贡献外，大量的大气污染物从南亚和东南亚输送到Mt。这两种污染物对区域大气环境都产生了重大影响。首次对天山北坡DOC的年湿沉降量进行了研究。估算并确定玉龙地区为1.99 g C m− 2年−1。这是因为DOC在冰川上的沉积对雪的表面覆盖和冰川融化有很大的影响。该研究可弥补天山南北雨水DOC研究的差距。这对进一步认识青藏高原DOC沉积与冰川收缩的关系具有重要意义。
Dissolved organic carbon (DOC) is an important organic pollutant in the air-water carbon cycle system, potentially influencing the global climate. In this study, 204 rainwater samples from five sampling stations in the Mt. Yulong region were synchronously collected from June to September in 2014. We comprehensively investigated the sources and wet deposition of DOC in summer precipitation. The average concentrations of DOC at five stations ranged from 0.74 to 1.31 mg L−1. The mass absorption efficiency (MAE) of rainwater DOC evaluated at 365 nm was 0.43 ± 0.32 m2g−1. Backward trajectory analyses indicated that the southwest advection air parcel accounting for 46% of precipitation events, while the corresponding average concentration of rainwater DOC was 1.25 ± 0.56 mg C L−1. In addition to the local or regional contribution, large amount of atmospheric pollutants were transported from South Asia and Southeast Asia to the Mt. Yulong region, both of which had exerted great influence on the regional atmospheric environment. For the first time, the annual wet deposition of DOC in the Mt. Yulong region was estimated and determined to be 1.99 g C m−2year−1. This is significant because the deposition of DOC on glaciers has great influence on surface albedo of snow and glacier melt. This study can bridge the gap of rainwater DOC research between the Mt. Yulong region and the southeast of Tibetan Plateau (TP), which has significant implications for better understanding the relationship of DOC deposition and glacial shrink in the TP.
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影响因子：
--
作者：
A. Gioda;Gabriel J Reyes-Rodríguez;G. Santos-Figueroa;J. Collett;S. Decesari;M. C. K. V. Ramos;Heleno J. C. Bezerra Netto;F. A. Neto;O. Mayol-Bracero
通讯作者：
A. Gioda;Gabriel J Reyes-Rodríguez;G. Santos-Figueroa;J. Collett;S. Decesari;M. C. K. V. Ramos;Heleno J. C. Bezerra Netto;F. A. Neto;O. Mayol-Bracero
DOI：
10.1002/2013jd020041
发表时间：
2014-03
期刊：
Journal of Geophysical Research: Atmospheres
影响因子：
--
作者：
E. Kirillova;A. Andersson;S. Tiwari;Amit Kumar Srivastava;D. S. Bisht;Ö. Gustafsson
通讯作者：
E. Kirillova;A. Andersson;S. Tiwari;Amit Kumar Srivastava;D. S. Bisht;Ö. Gustafsson
影响因子：
5
作者：
T. Soyol-Erdene;Yeongcheol Han;Borom Lee;Y. Huh
通讯作者：
T. Soyol-Erdene;Yeongcheol Han;Borom Lee;Y. Huh
影响因子：
5
作者：
R. Sempéré;K. Kawamura
通讯作者：
R. Sempéré;K. Kawamura
影响因子：
1.9
作者：
H. Niu;Yuanqing He;Shi-chang Kang;Xixi Lu;Xiaoyi Shi;Shijin Wang
通讯作者：
H. Niu;Yuanqing He;Shi-chang Kang;Xixi Lu;Xiaoyi Shi;Shijin Wang