The Spatiotemporal Distribution Characteristics of Cloud Types and Phases in the Arctic Based on CloudSat and CALIPSO Cloud Classification Products  

作　　者：Yue SUN Huiling YANG Hui XIAO Liang FENG Wei CHENG Libo ZHOU Weixi SHU Jingzhe SUN 

机构地区：[1]Key Laboratory of Cloud-Precipitation Physics and Severe Storms(LACS),and Department of Lower Atmospheric Observation Research(LAOR),Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China [2]College of Earth Sciences,University of Chinese Academy of Sciences(UCAS),Beijing 100049,China [3]Beijing Institute of Applied Meteorology,Beijing 100029,China

出　　处：《Advances in Atmospheric Sciences》2024年第2期310-324,共15页大气科学进展（英文版）

基　　金：supported in part by the National Natural Science Foundation of China (Grant No. 42105127);the Special Research Assistant Project of the Chinese Academy of Sciences;the National Key Research and Development Plans of China (Grant Nos. 2019YFC1510304 and 2016YFE0201900-02)。

摘　　要：The cloud type product 2B-CLDCLASS-LIDAR based on CloudSat and CALIPSO from June 2006 to May 2017 is used to examine the temporal and spatial distribution characteristics and interannual variability of eight cloud types(high cloud, altostratus, altocumulus, stratus, stratocumulus, cumulus, nimbostratus, and deep convection) and three phases(ice,mixed, and water) in the Arctic. Possible reasons for the observed interannual variability are also discussed. The main conclusions are as follows:(1) More water clouds occur on the Atlantic side, and more ice clouds occur over continents.(2)The average spatial and seasonal distributions of cloud types show three patterns: high clouds and most cumuliform clouds are concentrated in low-latitude locations and peak in summer;altostratus and nimbostratus are concentrated over and around continents and are less abundant in summer;stratocumulus and stratus are concentrated near the inner Arctic and peak during spring and autumn.(3) Regional averaged interannual frequencies of ice clouds and altostratus clouds significantly decrease, while those of water clouds, altocumulus, and cumulus clouds increase significantly.(4) Significant features of the linear trends of cloud frequencies are mainly located over ocean areas.(5) The monthly water cloud frequency anomalies are positively correlated with air temperature in most of the troposphere, while those for ice clouds are negatively correlated.(6) The decrease in altostratus clouds is associated with the weakening of the Arctic front due to Arctic warming, while increased water vapor transport into the Arctic and higher atmospheric instability lead to more cumulus and altocumulus clouds.

关 键 词：CloudSat and CALIPSO cloud type cloud phase temporal and spatial distribution interannual variation 

分 类 号：P426.5[天文地球—大气科学及气象学]