热带气象学报2017，Vol.33Issue(3)：426-432,7.DOI:10.16032/j.issn.1004-4965.2017.03.013
热带地区出射长波辐射的长程持续性研究
LONG-TERM MEMORY BEHAVIORS FOR OUTGOING LONGWAVE RADIATION IN THE TROPICS
摘要
Abstract
In order to explore inner change patterns of OLR over the tropics,daily outgoing longwave radiation (OLR) records (1979-2010) from NOAA are analyzed by using the detrended fluctuation analysis (DFA) method.The results indicate that the OLR over the tropics is power-law correlation and the value of scaling exponents is between 0.65 and 0.72 in most of the cases.Therefore,the OLR has strong long-range correlation (or consistency).The value of the OLR mainly depends on the cloud-top temperature and cloudiness due to strong convection in the western Pacific,the Congo Basin and South America.The clouds of these are asvary rapidly,which results in a weak long-term memory of the OLR in these regions.While the value of the OLR in the Middle East Pacific,Atlantic Ocean and Sahara Desert mainly relys on the sea surface or the land surface temperature,since the sea surface or land surface temperature barely change,which makes the OLR show a strong long-term memory.In addition,the long-term memory behaviors of the OLR in the tropics are caused by the fractal characteristics of time series,and further proved by randomly disrupting the time series to remove trends and correlation.关键词
出射长波辐射(OLR)/长程持续性/去趋势波动分析(DFA)Key words
outgoing longwave radiation/long-term memory/detrended fluctuation analysis (DFA)分类
天文与地球科学引用本文复制引用
雷亚栋,张峰,杨全,张敬昕,蒋磊,刘仁强..热带地区出射长波辐射的长程持续性研究[J].热带气象学报,2017,33(3):426-432,7.基金项目
国家自然科学基金项目(41305004、91537213、41575040) （41305004、91537213、41575040）
中国气象科学研究院灾害天气国家重点实验室开放课题(2016LASW-B07)共同资助 （2016LASW-B07）
