Method for forecasting urban heat island effect

An urban heat island effect and prediction method technology, applied in climate change adaptation, special data processing applications, instruments, etc., can solve problems such as difficulty in true and effective expansion, flat layout of urban heat islands, and difficulties in internal structure, etc. The effect of practical significance and high prediction accuracy
CN105930633AActive Publication Date: 2016-09-07INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
Publication Date
2016-09-07

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Abstract

The invention discloses a method for forecasting urban heat island effect. The method includes the steps of performing temperature inversion for remote sensing image data using a single window algorithm to obtain urban surface temperature data; grading the urban surface temperature data according to mean parameters and standard deviation parameters; conducting statistics of heat island area data of different grades; and calculating an initial state matrix S(0) based on the heat island region data of different grades at the first moment, calculating a transition matrix P based on the heat island region data of different grades at the second moment and the initial state matrix S(0), and calculating the evolution state data of heat island regions in the subsequent required time based on the initial state matrix S(0) and the transition matrix P. The invention constructs the state transition matrix and the initial state matrix by utilizing the temperature inversion grading results, and forecasts the next evolution trend of the heat island based on Markov chain transition probabilities. The invention is high in forecasting accuracy and has a great practical significance.
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Description

Technical field

[0001] The invention relates to a remote sensing data processing method, in particular to a method for predicting urban heat island effect. Background technique

[0002] The heat island effect means that when a city develops to a certain scale, the temperature of the city is significantly higher than that of the suburbs due to changes in the nature of the underlying surface of the city, air pollution, and artificial waste heat emissions, forming a phenomenon similar to high temperature islands. The underlying surface refers to the surface of the earth that is in direct contact with the lower layer of the atmosphere. It includes terrain, geology, soil, rivers and vegetation, etc., and is one of the important factors affecting climate. Since the day when the heat island effect was recorded in writing, many scientists have observed many large and small cities around the world. According to statistics, as of 2012, there are more than 1,000 cities of different sizes in...

Claims

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