1.0 INTRODUCTION Much progress has been made in modeling trace gases such as ozone and ozone precursors; however, relatively large uncertainties are still associated with urban, regional, and global-scale model predictions of aerosols (mass, size distribution, composition, physical characteristics, and optical properties) and aerosol direct and indirect forcing. A key step in improving the repr...

Abstract Atmospheric chemistry transport models have been extensively applied in aerosol forecasts over recent decades, whereas they are facing challenges from uncertainties emission rates, meteorological data, and over-simplified chemical parameterizations. Here, we developed a spatial-temporal deep learning framework, named PPN (Pollution-Predicting Net for PM 2.5 ), to accurately efficiently...

ii To My Family and Friends iii ACKNOWLEDGMENTS

Abstract. The Gridpoint Statistical Interpolation data assimilation (DA) system was developed for the four size bin sectional Model Simulating Aerosol Interactions and Chemistry (MOSAIC) aerosol mechanism in Weather Research Forecasting-Chemistry (WRF-Chem) model. forward tangent linear operators optical depth (AOD) analysis were derived from WRF-Chem code. We applied three-dimensional variatio...

Abstract. Correct description of the boundary layer mixing process particle is an important prerequisite for understanding formation mechanism pollutants, especially during heavy pollution episodes. Turbulent vertical determines distribution momentum, heat, water vapor and pollutants within planetary (PBL). However, what questionable that turbulent particles usually denoted by diffusion heat in...

The Weather Research and Forecasting model (WRF) is a simulating system developed for atmospheric weather prediction. WRF model is used for both operational as well as research purposes. The need for accurate weather and climate simulation to be carried out in shorter time is increasing day by day, which leads to the acceleration of existing Numerical Weather Prediction (NWP) system. This paper...

Convective clouds are important for both the vertical redistribution of tropospheric trace gases and removal, via microphysical scavenging, soluble gas precursors ozone. We investigate wet scavenging formaldehyde (CH2O), hydrogen peroxide (H2O2), methyl (CH3OOH) in quasi-marine land convective storms over Texas, USA observed on 18 September 2013 during SEAC4RS campaign. Cloud-resolving simulati...