Comparison of Temperature Variation Based on the Installation Environment of Conventional Meteorological Observation Stations
Due to the limitation of management and land ownership of conventional meteorological observation stations,it is difficult for some two-element stations(temperature and precipitation)to have ideal detection environment.The installation environments of observation stations have certain influence on temperature observation data.This paper selects hourly temperature data in 2023 from four conventional meteorological observation stations,namely Shunchang Station and Paper Mill Station with grassland as underlying surface and Shunchang Middle School Station and Yushe Reservoir Station with roof cement slab as underlying surface.The four stations are located in Shunchang Township,the mountainous and hilly areas of the urban area,and Yushe Town with the underlying surface near large water bodies.Through statistical and comparative analysis,we have found that in mountainous and hilly environments,the temperature warming time of Shunchang Station is longer than that of Shunchang Middle School Station.Moreover,the temperature at Shunchang Station is higher than that at the Shunchang Middle School Station.The temperature difference between the two types of underlying surfaces is more pronounced during the daytime in winter.In environments close to large water bodies,the grassland underlying surface in summer and autumn presents a higher temperature compared to the roof cement slab underlying surface.Due to the influence of large water bodies,the heating and cooling rates of Yushe Reservoir Station are relatively slow.The daily maximum and minimum temperatures at the two stations show significant differences in January,June,September and October.Under the two different environmental conditions,the large difference between the monthly highest and lowest temperatures under the same underlying surface is mainly concentrated in the period from August to November.In the exchange period of hot and cold seasons,the difference in temperature observation values under the same underlying surface reaches its maximum.During the continuous period of high temperature in summer and autumn,the temperature difference in the same underlying surface is the smallest.In summary,the selected sites for building conventional meteorological observation stations should be able to represent the meteorological conditions within a certain range of the surrounding area.They should be built on a flat underlying surface,and the regular work of environment maintenance such as the grass weeding and cutting should be carried out to better ensure the accuracy,representativeness,comparability and continuity of observation data.
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