Observed characteristics of atmospheric ducts over the South China Sea in autumn
Cheng Yinhe; Zhou Shengqi; Wang Dongxiao; Lu Yuanzheng; Huang Ke; Yao Jinglong; You Xiaobao; Cheng, YH (reprint author), Guangdong Ocean Univ, Coll Ocean & Meteorol, Guangdong Prov Key Lab Coastal Ocean Variat & Dis, Zhanjiang 524088, Peoples R China.; Cheng, YH; Wang, DX (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China.
2016
发表期刊CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
卷号34期号:3页码:619-628
摘要The observed characteristics of lower atmospheric ducts over the South China Sea (SCS) were analyzed based on Global Position Systerm (GPS) radiosonde data collected four times daily during autumn open cruises from 2006 to 2012. Duct occurrence, thickness, and strength over the SCS were about 40%, 150-m thick, and 8 M units, respectively, which were larger than during the summer monsoon period. Most ducts occurred at heights <1 500 m and these ducts easily trap electromagnetic wave clusters with wavelengths <2 m. Diurnal variation of the SCS ducts appeared evident. They occurred more often at midnight at higher altitudes (about 1 100 m), with a thickest layer of about 145 m and less frequently during the evening at lower altitudes (about 800 m), with a thinnest layer of about 125 m. Moreover, ducts during the daytime at a mean height of about 900 m, with the greatest strength of about 10 M units. Furthermore, all duct variables observed over the SCS in autumn decreased from north to south. These findings are useful not only in the design of radar and communication systems, but also for evaluating possible effects of anomalous propagation on meteorological radar and military applications.
部门归属[Cheng Yinhe] Guangdong Ocean Univ, Coll Ocean & Meteorol, Guangdong Prov Key Lab Coastal Ocean Variat & Dis, Zhanjiang 524088, Peoples R China; [Cheng Yinhe; Zhou Shengqi; Wang Dongxiao; Lu Yuanzheng; Huang Ke; Yao Jinglong] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China; [You Xiaobao] Beijing Inst Appl Meteorol, Beijing 100029, Peoples R China ; LTO
关键词Gps Radiosonde Atmospheric Ducts Autumn Statistical Characteristics
学科领域Marine & Freshwater Biology ; Oceanography
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/15367
专题热带海洋环境国家重点实验室(LTO)
通讯作者Cheng, YH (reprint author), Guangdong Ocean Univ, Coll Ocean & Meteorol, Guangdong Prov Key Lab Coastal Ocean Variat & Dis, Zhanjiang 524088, Peoples R China.; Cheng, YH; Wang, DX (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China.
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Cheng Yinhe,Zhou Shengqi,Wang Dongxiao,et al. Observed characteristics of atmospheric ducts over the South China Sea in autumn[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2016,34(3):619-628.
APA Cheng Yinhe.,Zhou Shengqi.,Wang Dongxiao.,Lu Yuanzheng.,Huang Ke.,...&Wang, DX .(2016).Observed characteristics of atmospheric ducts over the South China Sea in autumn.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,34(3),619-628.
MLA Cheng Yinhe,et al."Observed characteristics of atmospheric ducts over the South China Sea in autumn".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 34.3(2016):619-628.
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