L波段高空气象探测系统的更新换代,提高了大气探测精度,L波段＂秒级＂数据为垂直高分辨率廓线探测信息的获取提供了气象要素再分析的基础平台。为了探讨L波段探空垂直高分辨数据应用的可行性,考虑到用于对比分析的其他观测系统获取＂秒级＂＂高时间密度＂同步观测数据的设备条件,本文重点选用了JICA（中日气象灾害合作研究中心项目）PBL（行星边界层）通量铁塔梯度观测系统来进行对比分析,并构造L波段探空再分析与通量铁塔近地层气象信息相关模型。研究结果表明,L波段探空垂直高分辨率廓线近地层数据能够较好地描述大气边界层内近地层温、湿、压;所建立的温、湿、压模型具有推算PBL铁塔近地层的温、湿、压的可行性。研究结论可为L波段高分辨率垂直廓线再分析平台及其对大气结构描述可行性提供具有应用价值的技术基础。基于L波段高分辨率垂直廓线再分析信息平台的构造,将有助于开发全国L波段探空在数值模式应用方面的潜力,推进探空垂直高分辨信息在数值模式同化系统中新技术的发展。%The renewal of L-band upper-air meteorological sounding system increases the atmospheric sounding precision,and the L-band ＂seconds level＂ data offer the basis platform of ＂seconds level＂ meteorological element data reanalysis for the L-band vetical high resolution profile.In order to discuss the application feasibility of L-band sounding vertical high resolution data,considering the acquisition conditions of other observation system ＂high time density＂ synchronous observation data,this paper selects the JICA （Japan International Co-operation Agency） PBL（planetary boundary layer） flux tower gradient observation to compare with,and also constructs the correlation model of L-band sounding data and flux tower surface layer meteorological information.The result shows that the L-band sounding vertical high-resolution profile reanalysis surface data can preferably describe pressure,temperature,and humidity of the surface layer;the pressure,temperature,and humidity models have the feasibilities of calculating PBL surface layer pressure,temperature,and humidity.It provides the scientific proof and technical basis for the development and application of L-band detection ＂seconds level＂ data.On the basis of constructing L-band high resolution vertical profile reanalysis platform,it will help to develop national L-band sounding application in numerical model and promote the new technical development of radiosonde vertical high resolution information in numerical model assimilation system.
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