气候变化领域集成服务门户(CCPortal): A climatology of open and closed mesoscale cellular convection over the Southern Ocean derived from Himawari-8 observations

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DOI	10.5194/acp-22-2135-2022
	A climatology of open and closed mesoscale cellular convection over the Southern Ocean derived from Himawari-8 observations
	Lang, Francisco; Ackermann, Luis; Huang, Yi; Truong, Son C. H.; Siems, Steven T.; Manton, Michael J.
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	2135
结束页码	2152
卷号	22 期号:3 页码:18
英文摘要	Marine atmospheric boundary layer clouds cover vast areas of the Southern Ocean (SO), where they are commonly organized into mesoscale cellular convection (MCC). Using 3 years of Himawari-8 geostationary satellite observations, open and closed MCC structures are identified using a hybrid convolutional neural network. The results of the climatology show that open MCC clouds are roughly uniformly distributed over the SO storm track across midlatitudes, while closed MCC clouds are most predominant in the southeast Indian Ocean, with a second maximum along the storm track. The ocean polar front, derived from ECMWF-ERA5 sea surface temperature gradients, is found to be aligned with the southern boundaries for both MCC types. Along the storm track, both closed and open MCCs are commonly located in post-frontal, cold air masses. The hourly classification of closed MCC reveals a pronounced daily cycle, with a peak occurring late night/early morning. Seasonally, the diurnal cycle of closed MCC is most intense during the summer months (December-February; DJF). Conversely, almost no diurnal cycle is evident for open MCC.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000759330400001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273592
作者单位	Monash University; University of Melbourne
推荐引用方式 GB/T 7714	Lang, Francisco,Ackermann, Luis,Huang, Yi,et al. A climatology of open and closed mesoscale cellular convection over the Southern Ocean derived from Himawari-8 observations[J],2022,22(3):18.
APA	Lang, Francisco,Ackermann, Luis,Huang, Yi,Truong, Son C. H.,Siems, Steven T.,&Manton, Michael J..(2022).A climatology of open and closed mesoscale cellular convection over the Southern Ocean derived from Himawari-8 observations.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(3),18.
MLA	Lang, Francisco,et al."A climatology of open and closed mesoscale cellular convection over the Southern Ocean derived from Himawari-8 observations".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.3(2022):18.