Study on Cloud Change Trend in Southern China under the Influence of Climate Warming

摘要

[Objective] The research aimed to study influences of the climate warming on cloudage and cloud-like structure in southern China.[Method] Annual average temperature,total cloudage and low cloudage in Gan County,Nankang,Shangyou and Xinfeng of southern Jiangxi from 2004 to 2011 were selected.Influences of the annual average temperature change on annual average total cloudage,annual average low cloudage and cloud-like structure in southern Jiangxi were analyzed.[Result] Climate warming was affecting cloudage and cloud-like structure in southern China.When annual average temperature rose,annual average total cloudage and low cloudage both presented decrease trends.When annual average temperature declined,annual average total cloudage and low cloudage both presented rise trends.When annual average temperature was equal to that in prior year at low point,annual average total cloudage and low cloudage increased.Annual average low cloudage was different in mountain area and basin.Influences of the annual average temperature on annual average total cloudage and low cloudage in basin at the low altitude presented slow fluctuation form,and had severe influence on that in mountain area at the high altitude.Rise of the annual average temperature had larger influence on high cloudage,while decline of the annual average temperature had larger influence on annual average low cloudage.Under different weather situations,formation and disappearance change of the low cloud had different manifestation forms.[Conclusion] The research provided scientific basis for studying changes of the cloudage and cloud-like structure in southern China as climate warming.