Features Of Thermal And Humidity Environments In Chenggong New District Of Kunming

With the rapid economic development,China's urbanization process is also accelerating.Large suburban fields have been developed,which made the urbanization rate get higher and higher,followed by the aggravation of energy consumption and the environmental degradation problem has been getting worse.Currently,heat island effects exist not only in crowded metropolises,but also in emerging cities or new urban areas.Therefore,research in the urban thermal and humidity environment is a topic of practical significance.In this paper,the thermal-humidity environment features in Chenggong New District were tested by the mobile observation and fix point observation method.Analyzed the overall wind and thermal-humidity environment of the city by collected and organized meteorological data over the years.Tested the thermal-humidity environment of various local climate zones along the route through multiple vehicle-mounted mobile observations.The main research work in this paper are as follows:(1)Collected the air temperature,relative humidity and wind speed data of two urban meteorological observation stations in Kunming and Chenggong from 1981 to2010.Analyzed the yearly,seasonally,monthly,daily,hourly characteristics of wind and thermal-humidity environment which were obtained by a point-to-point way.that based on the data comparison between the meteorological stations.The results showed that summer and autumn are in a state of high temperature and high humidity,and the climate in winter and spring is dominated by low temperature and low humidity.Late spring,summer,and early autumn belong to the dry season and gale season,late autumn,winter,and early spring are the rainy season and breeze season.(2)The air temperature and relative humidity in winter and the end of autumn in Chenggong New District were tested by 16 measurements through vehicle-mounted mobile observations.The original data of the mobile observation was revised to the middle time with the established mathematical model and the polynomial regression equation obtained from the air temperature and humidity data recorded by the fixed point weather station.the distribution of air temperature and relative humidity in the100-meter buffer area with the observation route as the centerline was drawn by Arc GIS,and the causes and characteristics of the thermal and humidity environment in different LCZs were analyzed.The results showed that the outdoor thermal-humidity environment during the day is significantly affected by solar radiation,cloud cover and shadow occlusion.The temperature rise is mainly due to human-generated heat that there is no solar radiation at night.The main factors affecting the humidity environment are mainly surrounding water bodies,artificial heat release and dominant wind direction,which the dominant wind direction and surrounding water bodies have the most obvious influence.(3)By testing the eight different directions and distances of Bailongtan Lake and Luolong Lake in the windy dry season,the degree and law of the influence of the water body on the thermal-humidity environment in all directions were studied.The results showed that the water body plays a significant role in regulating the thermal-humidity environment in the surrounding small area.The temperature gradually decreases and the relative humidity gradually increases from the upwind to the downwind.(4)Based on the above research contents,the urban thermal and humidity environment planning strategies and improvement suggestions were proposed,providing some reference for the improvement of thermal and humidity environment and low-carbon development in low-latitude plateau and lakeside cities.