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Remote sensing-based anthropogenic heat emission time scale upscaling method

A technology of time scale and heat emission, applied in the field of remote sensing technology application

Inactive Publication Date: 2019-01-04
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI +1
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to propose a method for extending the time scale of anthropogenic heat emissions in view of the fact that the anthropogenic heat emissions estimated based on remote sensing methods are only instantaneous values

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  • Remote sensing-based anthropogenic heat emission time scale upscaling method
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Embodiment Construction

[0050] In order to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The data used in this embodiment is the Landsat image of Xiamen City with 2009 as the base year, such as figure 1 shown, including the following steps:

[0051] S1: Collect the Landsat images of each month in Xiamen City with 2009 as the base year. If there is a vacancy in a certain month due to cloudy and rainy weather factors, replace it with images of better quality in the adjacent month or the same month in the adjacent year;

[0052] Meteorological data include air temperature, atmospheric pressure, wind speed, water vapor pressure, daily minimum temperature, daily maximum temperature and radiation data. In the present invention, it is recommended to use Landsat as the satellite remote sensing image data source, mainly because the Landsat image is easy to obtain...

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Abstract

The invention provides a remote sensing-based anthropogenic heat emission time scale upscaling method. The method includes the following steps that: the multi-time phase Landsat images of a specific region are acquired; surface fluxes are estimated through using a surface energy balance method; a net radiant flux and a sensible heat flux are up-scaled to daily values through an integral method; alatent heat flux is up-scaled to a daily value through an evaporation ratio method; the daily latent heat flux is up-scaled to a monthly value through a crop coefficient method, the surface fluxes canbe extended to monthly values from daily values on the basis of the crop coefficient method provided that the proportion of the other fluxes to the net radiant flux is constant monthly; and monthly anthropogenic heat emissions are obtained through a remainder term method, and the monthly anthropogenic heat emissions are accumulated, so that annual anthropogenic heat emissions can be obtained. With the remote sensing-based anthropogenic heat emission time upscaling method of the invention adopted, the problem of the time upscaling during anthropogenic heat emission calculation can be solved; and long-time scale anthropogenic heat emissions are of great significance for fields such as energy resource management, climate numerical value simulation and urban environmental change.

Description

technical field [0001] The invention belongs to the application field of remote sensing technology, and in particular relates to a method for pushing up the time scale of man-made heat emission based on remote sensing. Background technique [0002] Anthropogenic heat emission refers to the waste heat discharged into the surrounding environment due to insufficient utilization of energy. It is not only one of the important reasons for the formation of urban heat islands, but also an indicator closely related to energy consumption. The study of urban man-made thermal emissions helps to identify sources of urban thermal pollution from the perspective of ecological environment, promotes the improvement of energy efficiency from the perspective of energy utilization, and provides decision support for reducing urban heat island effect and energy conservation and emission reduction. [0003] Compared with the commonly used energy consumption inventory method to estimate anthropogeni...

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Application Information

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IPC IPC(8): G01K17/00
CPCG01K17/00
Inventor 林剑艺刘嘉慧赵小锋
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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