烟台海域海岛站大风资料的可用性研究

发布时间：2018-05-19 14:31

本文选题：海面大风 + 海岛自动气象站　；参考：《兰州大学》2015年硕士论文

【摘要】：论文借助对比实验和统计分析方法研究测站高度对海岛自动站大风资料代表性的影响,并与实验站观测对比评估高度订正后大风资料的可靠性,以期获得客观真实的海上大风实况信息,用于指导大风预报,服务海洋经济的发展。首先,结合各海岛站地理位置和海拔高度,对烟台海域海岛自动站大风资料的可用性进行定性分析。基于Monin-Obukhov相似理论,利用乘幂律风廓线公式把各海岛站观测资料订正到10 m高处。以国家基本气象站--长岛站的大风资料作为基准资料,采用统计分析历史资料的方法,统计对比了11个海岛站2008年10月到2010年7月近2年间共142个大风日最大风速,同时用2008年10月到2010年7月间11个海岛站风资料制作风向、风速玫瑰图。分析对比结果表明：测站高度和地形对各个风向的风速有直接影响,需要选取合适的参数将观测数据订正到10米高度；采用与基本气象站观测的对比分析可以初步确定每个测站在不同风向上观测资料的可用性。其次,用对比实验的方法进一步研究各海岛自动气象站大风资料的可用性。在实验中选择了实验点周围环境比较理想的蓬莱八仙渡、担子岛、桑岛3个海岛自动站,其实测风基本代表偏北风时海面的标准风,从2012年11月-2013年5月,对6级以上大风及不同风速下的风向进行了7个月的连续对比实验。综合历史资料统计和对比实验分析,评估了各海岛站大风数据质量,并划分了各海岛站大风观测资料在不同风向上可利用价值大小,给出了烟台海域海面风的规则和订正方法。最后,建立海上大风数据平台,显示订正结果,并用于实际监测预报业务。按照上述结论,对海上大风评定中使用的实况资料重新界定,剔除不可用风向的实况资料,这将对提高预报准确率和服务效果起到积极的推动作用,同时对调整优化、布设海岛气象站点提供了科学依据。
[Abstract]:By means of comparative experiment and statistical analysis, the paper studies the influence of station height on the representative wind data of island automatic station, and evaluates the reliability of the revised gale data compared with the experimental station. In order to obtain objective and real information of sea gale, it can be used to guide wind forecast and serve the development of marine economy. Firstly, the availability of strong wind data of island automatic stations in Yantai sea area is analyzed qualitatively by combining the geographical location and altitude of each island station. Based on the Monin-Obukhov similarity theory, the observed data of each island station are revised to 10 m height by using the power law wind profile formula. Taking the gale data from the National basic Meteorological Station-Changdao Station as the datum data and using the method of statistical analysis of historical data, the maximum wind speed of 142 gale days in 11 island stations during the past two years from October 2008 to July 2010 was statistically compared. At the same time, the wind direction and wind speed rose map are made from 11 island stations wind data from October 2008 to July 2010. The results of analysis and comparison show that the height of the station and the topography have direct influence on the wind speed of each wind direction, so it is necessary to select the appropriate parameters to correct the observation data to 10 meters. The availability of observational data in different wind directions can be preliminarily determined by comparing the observations with basic meteorological stations. Secondly, the availability of gale data of automatic meteorological stations on each island is further studied by means of comparative experiments. In the experiment, three island automatic stations, Penglai Baxiandu, Guozi Island and Sangdao, which are ideal in the surrounding environment of the experimental sites, are selected. In fact, the wind measurement basically represents the standard wind of the sea surface during the northerly wind, from November 2012 to May 2013. A 7-month continuous contrast experiment was carried out on the wind direction of force 6 and different wind speed. Based on the statistics of historical data and comparative experimental analysis, the quality of gale data of each island station is evaluated, and the value of the observed data in different wind directions is divided. The rules and correction method of sea surface wind in Yantai sea area are given. Finally, the offshore gale data platform is established to show the revised results and to be used in actual monitoring and forecasting operations. According to the above conclusions, the redefinition of the actual data used in the offshore gale assessment and the elimination of the unusable wind direction data will play a positive role in improving the forecasting accuracy and the service effect, and at the same time, the adjustment and optimization will be improved. The establishment of island meteorological stations provides a scientific basis.
【学位授予单位】：兰州大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P714.2

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