Simulating global horizontal irradiance in the Arabian Peninsula: Sensitivity to explicit treatment of aerosols

摘要: Abstract Global horizontal irradiance (GHI) is simulated using a three-dimensional atmospheric meteorology-chemistry model and triple-nesting configuration over the Middle East with focus on hot desert climate of Qatar. The performance was assessed measurement data solar radiation from ground monitoring station in Doha (Qatar) collected three-month period, representative distinct meteorological regimes. We have examined ability to reproduce GHI values under two different shortwave downward parameterizations, sensitivity our results presence aerosols. introduction an advanced treatment aerosols greatly improves predicting GHI. Explicitly including aerosol processes its emissions significantly reduces relative root mean square error for 25% 13% May 20% 12% August. A significant improvement systematic bias achieved (from up 30% approximately 2%) when are fully considered during all three seasons. RRTM (Rapid Radiative Transfer Model) scheme performs somewhat better than Goddard both without This work suggests that predictions regions experience high loadings can benefit detailed explicit their physicochemical processes. offers novel approach manage fluctuating nature originating variable weather air pollution conditions.