Analysis of Optical Turbulence over the South China Sea Using Balloon-Borne Microthermal Data and ERA5 Data

doi:10.3390/rs14174398

	Analysis of Optical Turbulence over the South China Sea Using Balloon-Borne Microthermal Data and ERA5 Data
	Xu, Manman 1,2,3; Shao, Shiyong 2,3; Weng, Ningquan 2,3; Liu, Qing 2,3
刊名	REMOTE SENSING
	2022-09-01
卷号	14
关键词	optical turbulence wind shear empirical model atmospheric physics ocean and atmospheric optics
DOI	10.3390/rs14174398
通讯作者	Shao, Shiyong(shaoshiyong@aiofm.ac.cn)
英文摘要	It is very useful for adaptive optics (AO) systems to have appropriate knowledge of optical turbulence. However, due to the limitations of space and time, it is difficult to obtain turbulence parameters, especially in the far sea area. In this paper, the characteristics of optical turbulence over the South China Sea are obtained by analyzing the meteorological data obtained from the field experiment of ocean optical parameters and the fifth set of reanalysis data of the European Centre for Medium-Range Weather Forecasts (ECMWF) for 10 years (2011-2020). Firstly, a new statistical model is proposed based on the measured data and the Hufnagel-Valley 5/7, which can well reconstruct the atmospheric turbulence characteristics of the South China Sea. Secondly, according to the comparison between the temperature and wind speed data in ERA5 data and microthermal measurement, the ERA5 data have good reliability, with the temperature deviation basically less than 1.5 K and the wind speed deviation basically less than 2 m center dot s(-1). Thirdly, the vertical distributions and seasonal behavior of the turbulence strength at the determined location are analyzed, which shows that the turbulence strength in the upper atmosphere is strongest in summer, followed by autumn and winter, and weakest in spring. Then, the distribution profile of the Richardson number provides us with the relative probability of the existence of optical turbulence. During summer and September, the instability of the atmosphere is significantly larger than other months and the extremely low intensity in April indicates the most stable condition in all months. Finally, the analysis results of turbulence parameter profiles for many years show that there is good consistency between different parameters.
资助项目	National Key Research and Development program[2018YFC0213102] ; Equipment Pre-research Fund[6142404180302] ; National Natural Science Foundation of China[41475024] ; National Natural Science Foundation of China[42027804]
WOS关键词	PROFILES ; RELEVANT
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
语种	英语
出版者	MDPI
WOS记录号	WOS:000851657600001
资助机构	National Key Research and Development program ; Equipment Pre-research Fund ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/128896]
专题	中国科学院合肥物质科学研究院
通讯作者	Shao, Shiyong
作者单位	1.Univ Sci & Technol China, Grad Sch, Sci Isl Branch, Hefei 230026, Peoples R China 2.Adv Laser Technol Lab Anhui Prov, Hefei 230037, Peoples R China 3.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Key Lab Atmospher Opt, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Xu, Manman,Shao, Shiyong,Weng, Ningquan,et al. Analysis of Optical Turbulence over the South China Sea Using Balloon-Borne Microthermal Data and ERA5 Data[J]. REMOTE SENSING,2022,14.
APA	Xu, Manman,Shao, Shiyong,Weng, Ningquan,&Liu, Qing.(2022).Analysis of Optical Turbulence over the South China Sea Using Balloon-Borne Microthermal Data and ERA5 Data.REMOTE SENSING,14.
MLA	Xu, Manman,et al."Analysis of Optical Turbulence over the South China Sea Using Balloon-Borne Microthermal Data and ERA5 Data".REMOTE SENSING 14(2022).