64880888-1b49-45ba-aee9-b84647593b89 eng Ev-K2-CNR +39 035 3230511 +39 035 3230551 Via San Bernardino 145 Bergamo BG 24126 Italy metadata@evk2cnr.org http://www.evk2cnr.org/ 2011-11-01T16:08:22 ISO 19115:2003/19139 1.0 Carbonaceous particles in the atmosphere and precipitation of the Nam Co region, central Tibet. 2010-11-13T00:00:00 Journal of Environmental Sciences Volume 22 11 1748-1756 Journal of Environmental Sciences Volume 22, Issue 11, November 2010, Pages 1748-1756 A continuous air and precipitation sampling for carbonaceous particles was conducted in a field observatory beside Nam Co, Central Tibetan Plateau during July of 2006 through January of 2007. Organic carbon (OC) was the dominant composition of the carbonaceous particles both in the atmosphere (1660 ng/m3) and precipitation (476 ng/g) in this area, while the average elemental carbon (BC) concentrations in the atmosphere and precipitation were only 82 ng/m3 and 8 ng/g, respectively. Very high OC/BC ratio suggested local secondary organic carbon could be a dominant contribution to OC over the Nam Co region, while BC could be mainly originated from Southern Asia, as indicated by trajectory analysis and aerosol optical depth. Comparison between the BC concentrations measured in Lhasa, those at “Nepal Climate Observatory at Pyramid (NCO-P)” site on the southern slope of the Himalayas, and Nam Co suggested BC in the Nam Co region reflected a background with weak anthropogenic disturbances and the emissions from Lhasa might have little impact on the atmospheric environment here, while the pollutants from the Indo-Gangetic Basin of Southern Asia could be transported to the Nam Co region by both the summer monsoon and the westerly. Paolo Bonasoni Institute of Atmospheric Sciences and Climate (ISAC) - CNR +39 0516399590 +39 0516399652 Via Gobetti 101 Bologna BO 40129 Italy p.bonasoni@isac.cnr.it http://www.isac.cnr.it/ WWW:LINK-1.0-http--partners Jing Ming State Key Laboratory of Cryospheric Sciences, Cold and Arid Region Environmental and Engineering Research Institute, Chinese Academy of Science Lanzhou 730000 China, Mainland Cunde Xiao State Key Laboratory of Cryospheric Sciences, Cold and Arid Region Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000 China, Mainland Junying Sun Laboratory for Atmospheric Chemistry, Centre for Atmosphere Watch & Services, China Meteorological Administration Beijing 100081 China, Mainland Shichang Kang Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085 China, Mainland https://geoportal.mountaingenius.org/geonetwork/srv/eng/resources.get?uuid=64880888-1b49-45ba-aee9-b84647593b89&fname=mountain_witness__s.png thumbnail png SHARE Carbonaceous particles precipitation elemental carbon organic carbon Nam Co Tibetan Plateau eng climatologyMeteorologyAtmosphere environment geoscientificInformation 31 179.9 10.8 83.5 http://www.sciencedirect.com/science/article/pii/S1001074209603156 WWW:LINK-1.0-http--related Abstract:"Carbonaceous particles in the atmosphere and precipitation of the Nam Co region, central Tibet". "Carbonaceous particles in the atmosphere and precipitation of the Nam Co region, central Tibet". Journal of Environmental Sciences Volume 22, Issue 11, November 2010, Pages 1748-1756