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Measuring method and measuring apparatus for urban heat island strength

An urban heat island and measurement method technology, applied in the direction of instruments, climate change adaptation, etc., can solve the problems of complex and limited meteorological research, low accuracy of urban heat island intensity, etc., to simplify the measurement process, achieve accurate measurement, and improve measurement results. Effect

Inactive Publication Date: 2009-11-25
NANJING UNIV +1
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Problems solved by technology

However, the application of this method is relatively complicated, involving the observation of temperature data from multiple meteorological observation stations (at least one urban representative station and one suburban representative station)
The second method uses satellite remote sensing data to invert the ground temperature, and uses 3S technology to study the spatial variation characteristics of the heat island and the thermal environmental effects of land use / cover change. The main disadvantage of this method is that the accuracy of the obtained urban heat island intensity is too low
[0007] Due to the limitations of current technology, on the one hand, it is impossible to measure the intensity of urban heat island in a timely manner; on the other hand, it is difficult to obtain high-quality data on the intensity of urban heat island, which greatly limits the research on related meteorological issues

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  • Measuring method and measuring apparatus for urban heat island strength
  • Measuring method and measuring apparatus for urban heat island strength
  • Measuring method and measuring apparatus for urban heat island strength

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Embodiment 1

[0041] figure 2 It is the comparison between the urban heat island intensity UHI2 obtained when the present invention only considers the three specific meteorological factors of horizontal total wind speed, wind direction and temperature, and the urban heat island intensity UHI1 obtained by the existing observation technology. Utilize the built meteorological observation station to observe and collect the three specific meteorological factors of horizontal total wind speed, wind direction and temperature, and input them into the data analysis and processing device for analysis and processing, so as to obtain the urban heat island intensity UHI2. It can be seen from the figure that the urban heat island intensity obtained by the two methods has a good consistency. If the urban heat island intensity UHI1 obtained by the existing observation technology is used as an accurate value, then the average error of the urban heat island intensity obtained by the existing technology is ab...

Embodiment 2

[0043] image 3 It is when the present invention considers the impact of specific meteorological factor level total wind speed, wind direction, air temperature, surface temperature, humidity, solar radiation, cloud cover and stability on urban heat island intensity, the urban heat island intensity UHI2 obtained and the urban heat island intensity obtained by existing observation technology Comparison of heat island intensities UHI1. At this time, the meteorological factors collected and stored in the meteorological observation station include not only horizontal total wind speed, wind direction and temperature, but also surface temperature, humidity, solar radiation, cloud cover and stability. Depend on image 3 Visible, with figure 2 Similarly, the urban heat island intensity obtained by the two methods is also in good agreement, the average error between the two is about -0.05°C, which is negligible, the error variance is about 0.51°C, and the correlation coefficient reac...

Embodiment 3

[0045] Figure 4 It is the first measurement result when the present invention considers the impact of specific meteorological factors and diurnal changes on the intensity of urban heat island. At this time, it is simply divided into two time periods, day and night, for different time periods. , to establish the corresponding multivariate linear regression equation of urban heat island intensity-specific meteorological factors, so as to establish a data analysis and processing device. After the specific meteorological factors collected and stored in the meteorological observation station are input into the data analysis and processing device, different multiple linear regression equations are selected for processing according to the observation time of the meteorological data, so as to obtain the urban heat island intensity UHI2. It can be seen from the figure that considering the influence of diurnal variation on urban heat island intensity, the measurement results of urban h...

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Abstract

The invention relates to a measuring method and a measuring apparatus for the urban heat island strength, which considers the influence of at least three weather factors such as horizontal total wind speed, wind direction and air temperature to the measuring result of the urban heat island strength, applies the historical observation data of the city to be researched for establishing a data analysis process apparatus, and observes the observed result of the specific weather factors such as horizontal total wind speed, wind direction and air temperature of the city to be researched so as to correctly measure the urban heat island strength and provide a certain technology support for the weather study and atmosphere science.

Description

technical field [0001] The invention relates to a method for measuring urban heat island intensity and a measuring device thereof. Background technique [0002] The "urban heat island phenomenon" refers to the phenomenon that the temperature in urban areas is higher than that in the surrounding suburbs. The research on the heat island phenomenon in large and medium-sized cities at home and abroad in the past 20 years shows that climatic conditions are the external factors that cause the "heat island effect". Meteorological factors such as temperature, wind speed, wind direction, humidity, and cloud cover all affect the formation of the heat island phenomenon to varying degrees. , small wind speed, less cloud cover, suitable wind direction and humidity are all favorable meteorological conditions for strong heat island phenomenon. However, urbanization is the most fundamental reason for the formation of heat islands. This is mainly due to the development of urbanization. A la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01W1/00
CPCY02A30/60
Inventor 彭珍刘红年张宁戎春波郑秋萍朱焱朱莲芳
Owner NANJING UNIV
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