The influence of dusts on radiation and temperature over the eastern Asia with a regional climate model

In order to investigate the climate effects of dusts, a regional model (RegCM 4.6) with dust scheme was used simulate direct radiative forcing and air temperature response at 2 m near surface dusts over eastern Asia. Two sets experiments were conducted, one without aerosols. The experiment covered main occurrence months from March May for 8 years (2011−2018), simulation results evaluated against ground station, reanalysis satellite data. captured spatiotemporal distribution AOD mass loading However, it tended underestimate downwind source region Taklimakan Desert, overestimate them north Xinjiang. net including shortwave longwave up −20 W·m−2 −10 TOA due dominant negative forcing. only exception positive observed along western boundaries Tibetan Plateau semi-persistent ice snow cover. warm atmosphere more than 18 cool locally −0.7 °C. Among 5 sub-areas, largest averaged induced by appeared central Inner Mongolia in value −3.0 ± 2.1, −12.2 4.1 9.2 4.4 TOA, atmosphere, respectively. indicated that should be further improved included estimates change