Abstract
On the completion of a large-scale hydropower station, the change of the water area can cause a corresponding change of local weather. To examine such changes, this paper analyzed the effect of the reservoir in the head area of the Xiluodu hydropower station based on the temperature data of MODIS MYD11A2. The temperature differences (TD) between various locations in the study area and the reservoir were calculated to explore the TD in different seasons. The reservoir effect change intensity (RECI) was established to explore the impact of the reservoir on local weather changes in different flood seasons. The combination of the TD and RECI was applied to explore the role of the hydropower station in regulating the temperature of the surrounding reservoir. The results showed the following: (1) after hydropower station construction (HSC), the TD in the valleys decreased and the TD in the dry season was lower than that in the wet season; (2) the RECI had different distribution characteristics in different flood seasons of the reservoir, and the RECI was stronger in the wet season than that in the dry season; and (3) unlike in the plains, cooling and warming effects existed simultaneously in different parts of the mountains.
Highlights
Water is an important component of nature and is the most active element in the environment
The results showed that the cold island effect of Shihezi Oasis first decreased and increased, and showed that an increased water area led to an enhanced oasis cold island effect [7]
Remote Sens. 2018, 10, 600 mountains or plains according to altitude, and the results showed that the cold island effect changed differently in the two regions [34]
Summary
Water is an important component of nature and is the most active element in the environment. Water is one of the main measures for alleviating urban heat island effects [1], mainly through cooling and humidifying surrounding air through transpiration and water evaporation [2,3,4]. This is significant as urban heat islands, generated during urban development and construction, have led to a series of problems such as the rise of urban air temperature, air pollution, and energy consumption [1]. The cooling effect of water is of great significance in maintaining the stability of urban and oasis ecological environments
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