title: Wet deposition of acidifying substances in different regions of China and the rest of East Asia: modeling with updated NAQPMS.
abstract: The traditional way to study Sources-Receptor Relationships (SRRs) of wet deposition is based on sensitivity simulation, which has weakness in dealing with the non-linear secondary formation pollutants (e.g. ozone and nitrate). An on-line source tracking method has been developed in the Nested Air Quality Prediction Modeling System (NAQPMS) coupled with cloud-process module for the first time. The new model can not only quantify the total volume of the sulfate, nitrate and ammonium wet deposition with more accuracy, but also trace these acidic species to their emitted precursors. Compared with previous studies, our result clearly shows: (1) East China and Central China, which are the two primary export regions, have 15-30% and 10% effect on wet deposition in other areas, respectively; (2) Besides the above two regions, the total acid deposition in Southwestern and Northeastern China have reached or exceeded the critical loads under their own environmental conditions.
authors.affiliation: State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China.
authors.forename: B Z
authors.initials: BZ
authors.lastname: Ge
authors.affiliation: State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China. Electronic address: zifawang@mail.iap.ac.cn.
authors.forename: Z F
authors.initials: ZF
authors.lastname: Wang
authors.affiliation: Key Laboratory for Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, Beijing 100081, China.
authors.forename: X B
authors.initials: XB
authors.lastname: Xu
authors.affiliation: Pudong New Area Weather Office, Shanghai Meteorological Bureau, Shanghai 200135, China.
authors.forename: J B
authors.initials: JB
authors.lastname: Wu
authors.affiliation: Key Laboratory for Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, Beijing 100081, China.
authors.forename: X L
authors.initials: XL
authors.lastname: Yu
authors.affiliation: State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China.
authors.forename: J
authors.initials: J
authors.lastname: Li
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D001272:Atmosphere / Q000737:chemistry; D002681:China; D004784:Environmental Monitoring / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D008956:Models, Chemical; D009566:Nitrates / Q000032:analysis; D010126:Ozone / Q000032:analysis; D014887:Weather
chemical_list: D000393:Air Pollutants; D009566:Nitrates; D010126:Ozone
keywords: Acidity substances; Long-range transport; Model simulation; Source–receptor relationships; Wet deposition