ACP - Special issue
Similarities and differences of aerosol optical properties between southern and northern sides of the Himalayas
Atmos. Chem. Phys., 14, 3133-3149, 2014
Influence of air mass downward transport on the variability of surface ozone at Xianggelila Regional Atmosphere Background Station, southwest China
Atmos. Chem. Phys., 14, 5311-5325, 2014
Surface gas pollutants in Lhasa, a highland city of Tibet – current levels and pollution implications
Atmos. Chem. Phys., 14, 10721-10730, 2014
The decreasing albedo of the Zhadang glacier on western Nyainqentanglha and the role of light-absorbing impurities
Atmos. Chem. Phys., 14, 11117-11128, 2014
Lidar-observed enhancement of aerosols in the upper troposphere and lower stratosphere over the Tibetan Plateau induced by the Nabro volcano eruption
Atmos. Chem. Phys., 14, 11687-11696, 2014
Carbonaceous aerosols recorded in a southeastern Tibetan glacier: analysis of temporal variations and model estimates of sources and radiative forcing
Summary: Carbonaceous aerosols recorded in a Tibetan glacier present a distinct seasonal dependence and an increasing trend after 1980, which has important implications for the accelerated glacier melting. We use a global aerosol--climate model to quantify the aerosol source--receptor relationships, showing that emissions in South Asia had the largest contribution. The emission inventories and historical fuel consumption in South Asia are consistent with our ice-core analysis and model results.
Atmos. Chem. Phys., 15, 1191-1204, 2015
Carbonaceous aerosols on the south edge of the Tibetan Plateau: concentrations, seasonality and sources
Atmos. Chem. Phys., 15, 1573-1584, 2015
Chemical composition and size distribution of summertime PM2.5 at a high altitude remote location in the northeast of the Qinghai–Xizang (Tibet) Plateau: insights into aerosol sources and processing in free troposphere
Atmos. Chem. Phys., 15, 5069-5081, 2015
Atmospheric brown clouds reach the Tibetan Plateau by crossing the Himalayas
Summary: The Himalayas and the Tibetan Plateau region (HTP) is regularly exposed to polluted air masses that might influence glaciers as well as climate on regional to global scales. We found that atmospheric brown clouds from South Asia reach the HTP by crossing the Himalayas not only through the major north--south river valleys but rather over large areas by being lifted and advected at mid-troposheric levels. The transport is enabled by a combination of synoptic and local meteorological settings.
Atmos. Chem. Phys., 15, 6007-6021, 2015
Quantifying sources, transport, deposition, and radiative forcing of black carbon over the Himalayas and Tibetan Plateau
Summary: We use the CAM5 model with a novel source-tagging technique to characterize the fate of BC particles emitted from various geographical regions and sectors and their transport pathways to the Himalayas and Tibetan Plateau (HTP). We show a comprehensive picture of the seasonal and regional dependence of BC source attributions, and find strong seasonal and spatial variations in BC-in-snow radiative forcing in the HTP that can be quantitatively attributed to the various regional/sectoral sources.
Atmos. Chem. Phys., 15, 6205-6223, 2015
Seasonal variation of secondary organic aerosol tracers in Central Tibetan Plateau
Summary: 1) Seasonal trends of SOA tracers and origins were studied in the remote TP for the first time. 2) Seasonal variation of isoprene SOA tracers was mainly influenced by emission. 3) Due to the transport of air pollutants from the Indian subcontinent, aromatics SOA tracer presented relatively higher levels in the summer and elevated mass fractions in the winter. 4) Biogenic SOC dominated over anthropogenic SOC in the remote TP.
Atmos. Chem. Phys., 15, 8781-8793, 2015
Chemical characterization of submicron aerosol and particle growth events at a national background site (3295 m a.s.l.) on the Tibetan Plateau
Summary: A fall field campaign was conducted at a national background site (3295m a.s.l.) over the Tibetan Plateau. The submicron aerosol was dominated by organics (43%) and sulfate (28%). Secondary organic aerosol (SOA) dominated OA (85%), 17% of which being aged biomass burning OA. New particle formation and growth events were frequently observed, with an average particle growth rate of 2.0nm per hour. The important role of organics in particle growth in the Tibetan Plateau was also demonstrated.
Atmos. Chem. Phys., 15, 10811-10824, 2015
The regional distribution characteristics of aerosol optical depth over the Tibetan Plateau
Summary: Different monthly variation patterns of aerosol optical depth are observed over the southern and northern Tibetan Plateau (TP). A dividing line of higher dust occurrence in the northern TP and lower dust occurrence in the southern TP can be observed clearly at an altitude of 6-8km. The different seasonal variation patterns between the northern and southern TP are due to many factors, including the emission sources, high-altitude terrain and atmospheric circulation.
Atmos. Chem. Phys., 15, 12065-12078, 2015
Black carbon aerosol in winter northeastern Qinghai–Tibetan Plateau, China: the source, mixing state and optical property
Summary: An intensive campaign was conducted at the Qinghai-Tibetan Plateau using a ground-based single particle soot photometer and a photoacoustic extinctiometer. Significant enhancements of rBC loadings and number fraction of coated rBC were observed during the pollution episode. Biomass burning from N. India is determined to be an important potential source influencing the northeastern Qinghai-Tibetan Plateau. The rBC mixing state is important in determining absorption during the pollution episode.
Atmos. Chem. Phys., 15, 13059-13069, 2015