Modulation of sea surface temperature in three oceans on precipitation increase over Northwest China during the past 60 years: A review

Northwest China is a typical arid and semi-arid region that part of Central Asia. However, during the past 60 years, climate in has shown warm humid trend, with both average extreme precipitation continuing to increase. Humidification mainly caused by anomalous westward water vapor transport. Change transport path directly related Mongolian anticyclone anomaly weakening Asian summer monsoon. Our research shows interdecadal changes sea surface temperature (SST) North Atlantic, Pacific, Indian oceans, play an important role adjustment atmospheric circulation wetting over China. Since 1980s, Ocean been warming continuously, land–sea thermal gradient weakened, resulting significant reduction In contrast, northerly from polar increased. Concurrently, SST Atlantic also warming, multidecadal oscillation (AMO) negative positive phase, triggering anticyclones Mongolia, which leads Therefore, eastern affected abnormal northeast winds. These winds can continuously western China, leading prevalence easterly Moreover, Pacific decadal (PDO) changed phase after 1990s, promoted East westerly jet move Arctic produce anomalies Asia Interdecadal Indian, Oceans all have reduced Ocean. high latitudes (including region) be transported through anomalies, increased humidification.