Urban heat island strength calculation method based on composite indexes
A technology of urban heat island and composite indicators, applied in calculation, instrumentation, climate change adaptation, etc., can solve the problems that cannot fully represent the intensity of regional heat island, reflect and describe the characteristics of urban thermal environment changes, etc.
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[0044] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0045] Please refer to Figure 5 , the present invention provides a method for calculating urban heat island intensity based on a composite index, comprising the following steps:
[0046] Step S1: Determine the center of gravity of the urban form in the study area, and use the four-way thermal field profile method to calculate the regional temperature difference RTR;
[0047] Step S11: Determine the center of gravity of the urban form in the study area; the coordinates (x, y) of the center of gravity of the urban form are determined on the basis of the outline of the urban form of each typical city by the following formula:
[0048]
[0049] In the formula: w i is the weight of the i-th discrete target, which is determined according to the ratio of the area of each discrete target to the total area; x i 、y i It is the horizontal and vertical co...
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