Transpiration and evapotranspiration (ET) data, potential evapotranspiration, actual evapotranspiration data, temperature data, rainfall data

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introduction

Retrieval of surface transpiration and evapotranspiration from various satellite remote sensing data （ET） The product is one of the ecological environment data products launched by the geographic remote sensing ecological network , Products include 2000-2009 Three bands in the year RGB data , range 0-252 Between , The data type is 8bit integer . The product has undergone data collection — Model simulation — quality testing — Surface transpiration and evapotranspiration data flow , And it has been verified by the expert group , Good quality .

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Raster data source

Data name	Retrieval of surface transpiration and evapotranspiration from various satellite remote sensing data （ET） product
data type	grid
data format	TIFF
Data accuracy	1km、500m、30m
Time range	1981-2021 year
Geographic coordinate system	GCS_WGS_1984
Coverage	Global

Data brief

    Surface transpiration and evapotranspiration refer to the sum of soil evaporation and plant transpiration , It's soil - plant - An important process of water movement in a continuous atmospheric system , It is a vital source of water and energy for crop growth and development , It is an important link between land ecosystem and hydrological process , Its strength is related to the underlying surface conditions 、 There is a close relationship between plants, etc .

    Retrieval of surface transpiration and evapotranspiration in Heilongjiang Province from various satellite remote sensing data （ET） The product is Geographic remote sensing ecological network One of the eco-environmental data products launched , Products include 2000-2009 Three bands in the year RGB data , range 0-252 Between , The data type is 8bit integer . The product has undergone data collection — Model simulation — quality testing — Surface transpiration and evapotranspiration data flow , And it has been verified by the expert group , Good quality .

Model algorithm

    utilize MODIS Product data 、AMSR-E Brightness temperature data and auxiliary data （DEM、 Weather data ）, use ETWatch Method , Inversion of surface evapotranspiration .

    Quantitative remote sensing category of remote sensing data of surface evapotranspiration , Vegetation evapotranspiration and soil evapotranspiration have different change rules under different environmental conditions . An accurate estimate of surface evapotranspiration , It can not only improve the precision of crop yield estimation , It is also of great significance to the management of water resources and agricultural resources . The formula is as follows ：

Heilongjiang Province 2009 year 1 month ET

Data source reference ： Geographic remote sensing ecological network www.gisrs.cn

meanwhile , Geographic remote sensing ecological network www.gisrs.cn Many scientific data in the field of Geographical remote sensing are shared on the website （ Land use data 、npp Net primary productivity data 、NDVI data 、 Weather data （ rainfall 、 The temperature 、 Evapotranspiration 、 radiation 、 humidity 、 Sunshine hours 、 The wind speed 、 Vapor pressure data ）、 Runoff data 、 Night light data 、 Statistical yearbook 、 road network 、POI Point of interest data 、GDP Distribution 、 Population density distribution 、 Vector boundary of tertiary watershed 、 Geological hazard distribution data 、 Soil type 、 Soil texture 、 Soil organic matter 、 soil PH value 、 Soil texture 、 Soil erosion 、 Vegetation type 、 Distribution of nature reserves 、 Building contour distribution and other geographic data , And about the gis、 A tutorial on remote sensing ）.