| Title | Regional and Sectoral Sources for Black Carbon Over South China in Spring and Their Sensitivity to East Asian Summer Monsoon Onset |
| Authors | Fang, Chenwei Zhu, Bin Pan, Chen Yun, Xiao Ding, Deping Tao, Shu |
| Affiliation | Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing, Peoples R China Nanjing Univ Informat Sci & Technol, Key Lab Aerosol Cloud Precipitat China Meteorol A, Nanjing, Peoples R China Nanjing Univ Informat Sci & Technol, Minist Educ KLME, Key Lab Meteorol Disaster, Nanjing, Peoples R China Nanjing Univ Informat Sci & Technol, Special Test Field Natl Integrated Meteorol Obser, Nanjing, Peoples R China Jiangsu Meteorol Observ, Nanjing, Peoples R China China Meteorol Adm, Key Lab Transportat Meteorol, Nanjing, Peoples R China Peking Univ, Coll Urban & Environm Sci, Lab Earth Surface Proc, Beijing, Peoples R China Beijing Weather Modificat Off, Beijing, Peoples R China Beijing Key Lab Cloud Precipitat & Atmospher Wate, Beijing, Peoples R China |
| Keywords | RIVER DELTA REGION BIOMASS BURNING SOURCES AIR-QUALITY ATMOSPHERIC CIRCULATION SOURCE APPORTIONMENT NORTH CHINA INTERANNUAL VARIATIONS VERTICAL-DISTRIBUTION OZONE CONCENTRATIONS CLIMATE SIMULATIONS |
| Issue Date | 27-Oct-2020 |
| Publisher | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
| Abstract | Besides local emissions, biomass burning (BB) emissions in peninsula Southeast Asia (PSEA) and domestic anthropogenic emissions in North China (NC) are also significant black carbon (BC) sources over South China (SC) in spring. Meanwhile, the East Asian summer monsoon (EASM) is established with the wind field reversal, influencing the region-based contributions to BC over SC. Herein, BC sources for SC were tracked by region and by sector using the Community Earth System Model with a BC-tagging technique. During the spring of 2000-2014, 27% of BC surface concentration (BCS) and 64% of BC column burden (BCC) over SC stems from nonlocal sources. BC from NC is mainly transported below 850 hPa. It is the dominant nonlocal contribution to BCS (17%) and largely composed of residential and industrial sectors. Nonlocal emissions inside and outside China contribute 28% and 36% to BCC, respectively. Generally transported above 850 hPa, BC from PSEA is the largest nonlocal contributor (20%) to BCC and contributes 80% of BCC in BB sector. Additionally, the interannual variation in EASM onset times bring a maximum of -5% to +7%/-2% to +7% variation in BCC/BCS. The BC outflow/inflow contributed from NC dominates the BC decrease/increase over SC with southerly/northerly wind anomaly induced by early/late EASM onset, yet regional transport from PSEA contributes minor BC changes. The simulated BC is significantly positively correlated with the varying EASM onset times, but not with emissions, indicating the decisive role of meteorology in the interannual variation of BC over SC during springtime. |
| URI | http://hdl.handle.net/20.500.11897/599428 |
| ISSN | 2169-897X |
| DOI | 10.1029/2020JD033219 |
| Indexed | SCI(E) |
| Appears in Collections: | 城市与环境学院 地表过程分析与模拟教育部重点实验室 |
