气候变化领域集成服务门户(CCPortal): Black carbon aerosol and its radiative impact at a high-altitude remote site on the southeastern Tibet Plateau

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DOI	10.1002/2016JD026032
	Black carbon aerosol and its radiative impact at a high-altitude remote site on the southeastern Tibet Plateau
	Zhao, Zhuzi; Wang, Qiyuan; Xu, Baiqing; Shen, Zhenxing; Huang, Rujin; Zhu, Chongshu; Su, Xiaoli; Zhao, Shuyu; Long, Xin; Liu, Suixin; Cao, Junji
通讯作者	Cao, JJ (通讯作者)
发表日期	2017
ISSN	2169-897X
EISSN	2169-8996
起始页码	5515
结束页码	5530
卷号	122 期号:10
英文摘要	Aerosol black carbon (BC) was measured with an Aethalometer (TM) at Lulang, a high-altitude station in southeastern Tibetan Plateau (TP), from July 2008 to August 2009. Daily mean BC loadings varied from 57.7 to 5368.9 ng m(-3) (grand average +/- standard deviation = 496.5 +/- 521.2 ng m(-3)), indicating a significant BC burden even at free tropospheric altitudes. BC loadings were highest during the premonsoon and lowest during the monsoon, and peaks in BC were coincident with high atmospheric boundary layers. Daily peaks in BC occurred from 08: 00 to 10: 00 local time with minor fluctuations at other times. The BC mass absorption efficiency (MAE) was calculated from elemental carbon concentrations obtained from a thermal/optical reflectance method and absorption coefficients from the Aethalometer T, and values ranged from 6.1 to 31.7 m(2) g(-1) (average = 16.6 +/- 5.7 m(2) g(-1)). Strong variations in the MAEs during the monsoon can be ascribed to large uncertainties due to low BC and babs and possibly coatings on the BC. High MAEs during premonsoon pollution events were likely due to internal mixing during transport. The mean direct surface radiative forcing (DRF) estimated from a radiation model was -19.9 (+/- 7.4) W m(-2) for the full aerosol population and -3.9 (+/- 1.8) W m(-2) for a BC only scenario. The BC DRF during a case study (-36.0 W m(-2)) was much stronger than the typical, and the BC contribution to the forcing was higher (-50%) than usual (-20%). These results show that BC can at times account for a relatively large fraction of the aerosol surface heating over the southeast TP, which may affect both climate and hydrological cycles.
关键词	NAM CO REGION OPTICAL-PROPERTIES LONG-TERM LIGHT-ABSORPTION SOOT AEROSOLS CROSS-SECTION MIXING STATE PARTICLES MASS ATMOSPHERE
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000404131500028
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258942
推荐引用方式 GB/T 7714	Zhao, Zhuzi,Wang, Qiyuan,Xu, Baiqing,et al. Black carbon aerosol and its radiative impact at a high-altitude remote site on the southeastern Tibet Plateau[J]. 中国科学院青藏高原研究所,2017,122(10).
APA	Zhao, Zhuzi.,Wang, Qiyuan.,Xu, Baiqing.,Shen, Zhenxing.,Huang, Rujin.,...&Cao, Junji.(2017).Black carbon aerosol and its radiative impact at a high-altitude remote site on the southeastern Tibet Plateau.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(10).
MLA	Zhao, Zhuzi,et al."Black carbon aerosol and its radiative impact at a high-altitude remote site on the southeastern Tibet Plateau".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.10(2017).