Investigations of main factors affecting tropospheric nitrate aerosol using a coupling model--颗粒学报PARTICUOLOGY

Wang, T., Li, S., Jiang, F., & Gao, L. (2006). Investigations of main factors affecting tropospheric nitrate aerosol using a coupling model. China Particuology, 4(6), 336-341. https://doi.org/10.1016/S1672-2515(07)60286-3

Investigations of main factors affecting tropospheric nitrate aerosol using a coupling model

Tijian Wang ^{a b *}, Shu Li ^a, Fei Jiang ^a, Lijie Gao ^c

a Department of Atmospheric Science, Nanjing University, Nanjing 210093, China
b State Key Laboratory of Soil and Agriculture Sustainable Development, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
c State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Science, Chinese Academy of Sciences, Beijing 100029, China

10.1016/S1672-2515(07)60286-3

Volume 4, Issue 6, December 2006, Pages 336-341

Received 17 April 2006, Accepted 6 November 2006, Available online 14 December 2007.

E-mail: tjwang@nju.edu.cn

Highlights

Abstract

Factors affecting tropospheric nitrate aerosol formation were investigated through a number of sensitivity studies using the thermodynamic equilibrium model ISORROPIA and the condensed gas-phase chemistry model. Results indicate that the equilibrium concentration of nitrate aerosol varies with solar zenith angle, air temperature, relative humidity, initial SO₂ concentration, initial NO₂ concentration and initial NH₃ concentration. NH₃ concentration and solar zenith angle play the most important roles, followed by relative humidity and NO₂ concentration. It seems that the relations between nitrate aerosol and these four factors, as well as air temperature, are strong and highly nonlinear due to the coupling effect. The influence of SO₂ concentration on nitrate aerosol is near-linear and weak.

Graphical abstract

Keywords

nitrate aerosol; troposphere; thermodynamic equilibrium model

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