Antecedent Soil Moisture Conditions Influenced Vertical Dust Flux: A Case Study in Iran Using WRF-Chem Model

Soil moisture is one of the most important parameters affecting dust emission flux. This study was conducted to investigate effects soil on vertical flux in central plateau region Iran. In this study, WRF-Chem (Weather Research and Forecast with Chemistry) model, GOCART (Global Ozone Chemistry Aerosol Radiation Transport) scheme, used estimate during a major storm from 19 21 July 2015, discriminate between sources. The results showed that Kyrgyz deserts Turkmenistan, Arabian Saudi Arabia, Iraq, Helmand Afghanistan are sources foreign dust. Additionally, desert plain identified as an internal source, where level reached 7000 µg m−2 s−1. simulation were verified reanalysis data MERRA2 AERONET Natanz station, which good agreement simulation. Based GLDAS reanalysis, content varied 2.6% 34%. Linear nonlinear regression values behavior following exponential function, correlation coefficient 0.8 strong negative association