Modeling dry and wet deposition of sulfate, nitrate, and ammonium ions in Jiuzhaigou National Nature Reserve, China using a source-oriented CMAQ model: Part II. Emission sector and source region contributions.

摘要: Abstract A source-oriented Community Multiscale Air Quality (CMAQ) model driven by the meteorological fields generated Weather Research and Forecasting (WRF) was used to study dry wet deposition of nitrate (NO3−), sulfate (SO42 −), ammonium (NH4+) ions in Jiuzhaigou National Nature Reserve (JNNR), China from June August 2010 identify contributions different emission sectors source regions that were responsible for fluxes. Contributions power plants, industry, transportation, domestic, biogenic, windblown dust, open burning, fertilizer, manure management sources fluxes JNNR watershed four EANET sites are determined. In JNNR, 96%, 82%, 87% SO42 −, NO3− NH4+ form corresponding aerosol species. Industry plants two major SO42 − flux, accounting 86% total industry has a higher contribution (56%) than (30%). Power also top deposition, (30%) generally those industries (21%). The flux fertilizer (48%) (39%). Source-region apportionment confirms SO2 NOx emissions local nearest counties do not have significant impact on predicted with less 10%. While NH3 account fraction approximately 70% originated other regions. This demonstrates S N is mostly long-range transport rather emissions, protect regional reduction controls needed.