贺兰山东麓葡萄园区国家级观测站与自动气象站最低气温的对比分析

为了促进宁夏葡萄产业发展，提升葡萄气象保障能力，为今后格点化预报和专业预报服务提供支撑，本研究利用2009—2016年4—5月贺兰山东麓葡萄园区内27个自动气象站及7个国家级观测站逐时最低气温资料，对比分析代表酒庄的自动气象站（简称：酒庄站）与所辖区国家级观测站（简称：大监站）最低气温的差异性。结果表明：贺兰山东麓最低气温出现在20时—10时，以03—08时居多，其中07时出现次数最多；经历史资料分析和实况个例对比分析，均发现酒庄站最低气温与大监站最低气温之间存在明显差异，差异普遍在3℃以内。

National Observation Stations and Automatic Weather Stations in Vineyard Area at the East Foot of Helan Mountain: Comparative Analysis of the Minimum Temperature

The paper aims to promote the development of grape industry in Ningxia, enhance the meteorological service ability for grape production, and provide support for future lattice forecast and professional forecast services. Based on the hourly minimum temperature data of 27 automatic weather stations and 7 national observation stations of vineyard area at the east foot of Helan Mountain from April to May during 2009-2016, we compared and analyzed the differences of the minimum temperature between the automatic weather stations which were represented the chateau and the national observation stations in the area (abbreviation: Dajian Station). The results showed that the minimum temperature appearing at the east foot of Helan Mountain was from 20:00 to 10:00, with the majority in 03:00 to 08:00, and the occurrences at 07:00 were the most. According to historical data analysis and the comparison of actual cases, there was a significant difference between the minimum temperature of chateau station and national observation station, and the difference was generally within 3℃.