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气象:2011,37(8):1006-1017
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边界层风廓线仪多普勒频谱高度图综合应用初探
(1.上海市气象局,上海 200030;2.上海市气象局,上海 200030;3.上海市气象信息与技术支持中心,上海 200030;4.上海市闵行区气象局,上海 201100)
Preliminary Analyses on Comprehensive Applications of Stacked Spectral Plots in the Control and Dwell Display Window of Wind Profilers
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投稿时间:2010-10-04    修订日期:2011-03-18
中文摘要: 文章介绍了边界层风廓线仪多普勒频谱高度图的原理,并且给出了无降水、有降水、降雪、速度折叠、地物杂波、外界信号干扰等典型的多普勒频谱高度图型。研究发现,多普勒频谱高度图除了可以从中提取测风产品所需的数据外,该在线显示的图形还实时提供了许多其他潜在的气象信息,并可用于:连续监视测站上空天气;提前了解测站上空风的垂直切变;发现并确定降水起始时间;在线估测风向风速;实时判别降水云底高度和0°层的范围;验证和解释风羽剖面图产品中的奇异现象;帮助固定和移动风廓线仪选址;诊断风廓线仪系统故障;评价风廓线仪系统软/硬件性能优劣等。文章指出:深入发掘边界层风廓线仪在降水天气系统中进行高时间密度探测的潜力,使得它可以晴雨两用,对今后将边界层风廓线仪配备到一般气象观测站,提高单站天气监测/预警能力和开展精细化天气预报意义深远。文章还对当前商业化的边界层风廓线仪提出了具体的改进意见,以满足频谱在线分析的需要。
Abstract:The paper has described the principals of the stacked spectral plots (SSP)in the control and dwell display window of boundary wind profiler (BWP). Some typical SSP patterns including precipitation, non precipitation, snow, radial velocity ambiguity, ground clutter as well as outliers have been provided in the paper for application references. It has also been found that the raw data of BWP for producing wind measurement products can be obtained not only from the SSP on lined, but also it can offer lots of potential meteorological information in a real time. All of those said above can be used to carry out a round clock weather monitoring over the observation station, understand the wind shear with height in advance, determine rainfall commence time and estimate the wind direction and speed, on line estimate the bottom height of rainfall clouds and the range of 0° layer, verify the data quality in other non real time products, support site selection for both stationary and mobile BWP, diagnose BWP system issues, assess the software and hardware of BWP, etc. It has been pointed out for the first time that developing the potential abilities of BWP sounding in the rainfall weather systems with a high temporal resolution and making it working well in both precipitation and non precipitation conditions are significantly meaningful with respect to BWP to be deployed to the weather observation stations nationwide in the near future to enhance the integrated capabilities in weather surveillance and detailed weather forecast. The comments and suggestions are also presented in order to improve the performance for the current commercial BWP to meet on line analysis demand.
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基金项目:“上海市气象局边界层风廓线仪组网项目”资助
引用文本:
吴志根,丁若洋,郑杰,陈浩君,查亚峰,李建成,胡平,2011.边界层风廓线仪多普勒频谱高度图综合应用初探[J].气象,37(8):1006-1017.
WU Zhigen,DING Ruoyang,ZHENG Jie,CHEN Haojun,ZHA Yafeng,LI Jiancheng,HU Ping,2011.Preliminary Analyses on Comprehensive Applications of Stacked Spectral Plots in the Control and Dwell Display Window of Wind Profilers[J].Meteor Mon,37(8):1006-1017.