CAJ | 학술논문

基于VAD算法原理及雷达观测噪音、缺测及风场非线性程度对反演风的影响,设置了有效数据点数、数据空缺的最大间隔、相对离差、高波项能量分量四个判据来判别VAD风的可靠性.利用美国KTLX雷达2001年3月的观测资料以及邻近探空观测资料共1 895个样本的统计分析表明单个的判据对VAD风好坏的识别能力较差.但是综合四个判据可以得到较有效的VAD风质量控制标准,进而得到判断VAD风适用性的两种判断策略.
기우VAD산법원리급뢰체관측조음、결측급풍장비선성정도대반연풍적영향,설치료유효수거점수、수거공결적최대간격、상대리차、고파항능량분량사개판거래판별VAD풍적가고성.이용미국KTLX뢰체2001년3월적관측자료이급린근탐공관측자료공1 895개양본적통계분석표명단개적판거대VAD풍호배적식별능력교차.단시종합사개판거가이득도교유효적VAD풍질량공제표준,진이득도판단VAD풍괄용성적량충판단책략.
VAD winds retrieved from radar data are often subject to the observed noise, data vacancy and the nonlinear characteristic of the actual wind. Based on the principle of VAD algorithm, four criteria were designed to distinguish the usable levels of VAD winds. The criteria were, respectively, the number of available data points, the maximum interval of data vacancy, relative bias and component of higher-wave energy. The statistical analysis over 1895 samples from the observations available at KTLX radar and neighboring sounding data showed that single criterion was disabled to strictly distinguish the quality of VAD winds. However, the effective criteria of quality control could be obtained by combining four criteria as a whole. Furthermore, two strategies were extended to adjust usable or unusable VAD winds based on the analysis of the results of multi-criteria.