Method for building mountainous area surface temperature base line and application

Abstract

The invention discloses a method for building a mountainous area surface temperature base line and application, and relates to the measurement and application of mountainous area surface temperature base lines. A transient temperature field distributed continuously in MODIS thermal infrared remote sensing image inversion spaces is combined with longitude and latitude raster data to build the annual average temperature linear estimation model of a weather station as the calibration model of the transient surface temperature field. The model corrects the transient temperature field to obtain the mountainous area surface temperature base line. In YunnanProvince with the mountain landform as the main landform, the temperature base line with a 90m*90m grid as a unit is built, the temperature distribution characteristics and rules of the area are reflected, and the average temperature base line value of a 90m*90m land parcel can be found out in a quantitative mode. The temperature base line is used as basic data to be combined with an expert scoring method to respectively build a Yunnan Province pine wilt disease occurrence risk pre-warning model and a Yunnan Province forest fire danger long-term forecast model.

Description

Technical field [0001] The invention belongs to the measurement of geographic temperature characteristic values, especially the measurement and application of ground surface temperature baselines. Background technique [0002] Surface temperature is a key factor in many ecological environmental processes, and its changing law is the basic content of the establishment and practical application of theories in meteorology, hydrology, ecology, forestry and other fields. The traditional method is based on the meteorological station observation data as sample data, using interpolation method, temperature lapse rate correction method, multiple regression method and other methods of geographic information system to carry out temperature rasterization research. Essentially, it is made by applying statistical methods. The model lacks the realistic meaning of physical temperature simulation. Even if there is a correction model based on environmental gradient factors such as altitude and la...

AI Technical Summary

Problems solved by technology

Under the comprehensive effect of terrain and the direction of mountains and rivers, the regional differences and vertical variation of heat are very obvious. However, the complex and changeable mountainous landforms and the remarkable characteristics of the three-dimensional climate make the more than 100 conventional weather stations in the province representative Poor, the traditional temperature baseline often has only a few isolines in the whole territory of Yunnan, which has caused great difficulties to explore the temperature law in mountainous areas

At present, there is no spatially continuous baseline data of surface temperature in Yunnan that can be widely used in various industries

Images