Multiple TimeScale Features of Temperatures over Different Underlying Surfaces in Chongqing
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Abstract:
This study uses the hourly insite data from the special observation station of Ba’nan District to conduct a comparative analysis of temperatures over different underlying surfaces (grass, soil, cobblestone, slate, concrete, and asphalt). The multiple timescale features of temperature difference between concrete and grass surfaces are assessed. The results show that the temperatures over different underlying surfaces show clear multiple timescale features. In monthly mean variation, the temperatures over slate, concrete and asphalt surfaces are higher than those over soil, grass and cobblestone surfaces. The difference is much bigger in summer and in the daytime. The extreme temperature of >45 ℃ is frequently occurred over slate, concrete and asphalt surfaces from 14:00 to 15:00 in the afternoon. The temperature differences between concrete and grass surfaces also show prominent seasonal and diurnal cycles. The differences are also larger in summer and in the daytime. The daily maximum values of the differences usually occur from 14:00 to 16:00 in the afternoon.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.