文献类型：期刊文献

中文题名：冬季南海北部近岸蒸发波导环境分析

英文题名：Analysis on the evaporation duct environment near coast of the northern South China Sea in winter

作者：成印河[1];张玉生[2];赵振维[2];朱凤芹[1]

机构：[1]广东海洋大学海洋与气象学院陆架及深远海气候、资源与环境省教育厅重点实验室,广东湛江524088;[2]中国电波传播研究所,山东青岛266017

年份：2013

卷号：28

期号：4

起止页码：697

中文期刊名：电波科学学报

外文期刊名：Chinese Journal of Radio Science

收录：CSTPCD、、北大核心2011、EI(收录号：20133816756503)、Scopus(收录号：2-s2.0-84883807012)、北大核心、CSCD、CSCD2013_2014

基金：国家自然科学基金项目(NO.41106011和NO.41175012)

语种：中文

中文关键词：冬季;南海;蒸发波导;修正大气折射率

外文关键词：winter ; SCS; evaporation duct ; modified refractivity

中文摘要：利用南海近岸冬季1月份铁塔气象梯度数据和海面皮层温度数据,对我国南海近岸蒸发波导环境及其影响参数进行了分析.结果表明:整个冬季南海北部近岸蒸发波导环境是变化的,不低于10m蒸发波导平均发生概率为85%以上,平均折射率梯度为-1.7Munits/m,同时日变化特征明显,中午前后发生概率较高为95%以上,平均折射率梯度为-2.0 M units/m,深夜发生概率较小80%左右,折射率梯度为-1.5Munits/m.南海北部近岸风向转换是影响整个冬季蒸发波导环境变化的主要原因.该分析为定量诊断和预报我国南海近岸蒸发波导环境提供依据.

外文摘要：Using the gradient hydrometeorological and surface skin temperature da-ta observed on iron tower platform in January of 2011, the characteristic parameters of evaporation duct environment such as occurrences, duct height etc and its related factors were analyzed. The results show that the evaporation duct environment near coast of the northern South China Sea （SCS） is changeable in whole winter. The average occurrence probability and modified refractivity gradient with their evapora-tion ducts heights less than 10 m are more than 85% and -1.7 M units/m respec-tively and their average diurnal variation is noticeable. There are more than 95% e-vaporation duct occurring at around noon and its modified refractivity gradient is - 2.0 M units/re. However the occurrence probabilities become small to 80% or so in the nighttime and its modified refractivity gradient is -1.5 M units/re. The whole winter＇s variation trend of evaporation duct environment appeared to be mainly caused by the changes of wind direction. The research provided a basis for quantita-tive analysis and forecast of the evaporation duct in the littoral of the northern SCS.