A potential large and persistent black carbon forcing over Northern   Pacific inferred from satellite observations

doi:10.1038/srep43429

CORC > 北京大学 > 城市与环境学院

	A potential large and persistent black carbon forcing over Northern Pacific inferred from satellite observations
	Li, Zhongshu ; Liu, Junfeng ; Mauzerall, Denise L. ; Li, Xiaoyuan ; Fan, Songmiao ; Horowitz, Larry W. ; He, Cenlin ; Yi, Kan ; Tao, Shu
刊名	SCIENTIFIC REPORTS
	2017
关键词	EASTERN CHINA AEROSOL AEROCOM EMISSIONS SIMULATIONS TRANSPORT MONOXIDE MODELS GASES
DOI	10.1038/srep43429
英文摘要	Black carbon (BC) aerosol strongly absorbs solar radiation, which warms climate. However, accurate estimation of BC's climate effect is limited by the uncertainties of its spatiotemporal distribution, especially over remote oceanic areas. The HIAPER Pole-to-Pole Observation (HIPPO) program from 2009 to 2011 intercepted multiple snapshots of BC profiles over Pacific in various seasons, and revealed a 2 to 5 times overestimate of BC by current global models. In this study, we compared the measurements from aircraft campaigns and satellites, and found a robust association between BC concentrations and satellite-retrieved CO, tropospheric NO2, and aerosol optical depth (AOD) (R-2 > 0.8). This establishes a basis to construct a satellite-based column BC approximation (sBC) over remote oceans. The inferred sBC shows that Asian outflows in spring bring much more BC aerosols to the mid-Pacific than those occurring in other seasons. In addition, inter-annual variability of sBC* is seen over the Northern Pacific, with abundances varying consistently with the springtime Pacific/North American (PNA) index. Our sBC* dataset infers a widespread overestimation of BC loadings and BC Direct Radiative Forcing by current models over North Pacific, which further suggests that large uncertainties exist on aerosol-climate interactions over other remote oceanic areas beyond Pacific.; National Natural Science Foundation of China under awards [41671491, 41390240, 41571130010]; 111 Project [B14001]; SCI(E); ARTICLE; 7
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/474657]
专题	城市与环境学院环境科学与工程学院
推荐引用方式 GB/T 7714	Li, Zhongshu,Liu, Junfeng,Mauzerall, Denise L.,et al. A potential large and persistent black carbon forcing over Northern Pacific inferred from satellite observations[J]. SCIENTIFIC REPORTS,2017.
APA	Li, Zhongshu.,Liu, Junfeng.,Mauzerall, Denise L..,Li, Xiaoyuan.,Fan, Songmiao.,...&Tao, Shu.(2017).A potential large and persistent black carbon forcing over Northern Pacific inferred from satellite observations.SCIENTIFIC REPORTS.
MLA	Li, Zhongshu,et al."A potential large and persistent black carbon forcing over Northern Pacific inferred from satellite observations".SCIENTIFIC REPORTS (2017).