tailieunhanh - Spatial distribution of hot days in north central region, Vietnam in the period of 1980-2013

The initial result shows that in general, in the north of the study area, the large number of hot days occurred in the plain, and tended to decrease westward and eastward. In the south, this number tends to increase from the west to the east. Especially, the largest number occurred in two areas: The Ma and Ca River's valleys (Thanh Hoa and Nghe An provinces) and the coastal areas (Thua Thien Hue province), creating two heat centers in Tuong Duong district, Nghe An province and Nam Dong district, Thua Thien Hue province. | Vietnam Journal of Earth Sciences 41 1 36 45 Doi 0866-7187 41 1 13544 VAST Vietnam Academy of Science and Technology Vietnam Journal of Earth Sciences http jse Spatial distribution of hot days in north central region Vietnam in the period of 1980-2013 Pham Thi Ly Hoang Luu Thu Thuy Institute of Geography VAST Received 9 August 2016 Received in revised form 20 December 2018 Accepted 9 January 2019 ABSTRACT Based on the data of daily maximum temperature of 26 meteorological stations in the North Center Region Vietnam over the period of 1980-2013 the authors conducted the research on spatial distribution of the number of hot days. The initial result shows that in general in the north of the study area the large number of hot days occurred in the plain the hot days tend to decrease moving from the plain to the west and the east. In the south the number tends to increase from the west to the east. Especially the largest number occurred in two areas Ma and Ca Rivers valleys Thanh Hoa and Nghe An provinces and coastal areas Thua Thien Hue province creating two hot centers in Tuong Duong district Nghe An province and Nam Dong district Thua Thien Hue province . Keywords . Heat wave hot day spatial distribution North Center Region. 2019 Vietnam Academy of Science and Technology 1. Introduction Heat waves are among the extreme weather events with extreme temperature significantly affecting on human being environment and social-economic activities. Heat waves are direct causes of some disasters such as drought and usually associated with variety of calamities influencing society in term of water quality and quantity human health mortality to name but a few Naim and Fawcett 2013 Unal et al. 2013 Liu et al. 2015 . For example more Australians die every year due to extreme heat events than other natural hazards Will Steffen 2015 and increased risk of heat-related deaths in many populated areas of the United States Peterson Corresponding author .