Abstract:

Based on meteorological data during 1966-2018, the variation of climate comfort degree (CCD) in Qinhuangdao over the past 53 years was analyzed using the methods of climate comfort evaluation and trend analysis.The results show that the change trends of CCDs in the northern mountainous area, the central plain and the southeastern coastal areas in Qinhuangdao are generally consistent, and present some spatial differences.In general, Qinhuangdao features mainly comfortable to cool climate.The CCDs of comfort and relative comfort levels account for 47% to 49%, and that of cold discomfort level accounts for 34% to 37%, and those of hot and hotter discomfort levels are rare.In the past 53 years, Qinhuangdao shows a warming trend in both summer and winter, and the warming range in winter is larger than that in summer.Meanwhile, the hot discomfort days have sharply increased, and the cold discomfort days have decreased year by year since the 1990s.The number of hot discomfort days increases with the decrease of altitude and latitude of the station, while the situation of the cold discomfort days is the opposite.In Qinhuangdao, the comfortable or relatively comfortable climate from May to October is suitable for tourism and recuperation, the slightly hot weather without intense heat in July and August is suitable for swimming in the sea, and the relative cold climate in March, April and November is suitable for mountain climbing.However, the cold and uncomfortable climate from December to February is not suitable for mass tourism, but is suitable for ice and snow tourism activities.Therefore, it can be thought that Qinhuangdao is suitable for tourism in all seasons, which provides a basis for tourism development and planning and for studying the impacts of climate change on tourism, and also provides life and travel weather service guidance for the recuperation people who come to Qinhuangdao known as "Qinhuangshanhai, Kangyangfudi".

Key words: Climate comfort degree, Discomfort days, Recuperation