Agricultural drought monitoring method based on meteorological time lag caused by soil moisture
A soil moisture and drought technology, applied in climate change adaptation, data processing applications, complex mathematical operations, etc., to strengthen disaster prevention and mitigation decision-making, with remarkable results
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[0043] The technical scheme of the present invention is described in detail below based on specific embodiments, and the flow process is as follows figure 1 Shown:
[0044] Step 1, data preprocessing.
[0045]Prepare the data of the study area, including long-term soil moisture data, precipitation data, vegetation health index data, surface climate data, (including sunshine time (h / day), average temperature (°C), average maximum temperature (°C), average minimum temperature (°C), average wind speed (m / s), average water pressure (hPa) and average relative humidity (%)), and vegetation health index data. Using Penman formula and surface climate data to calculate evapotranspiration data, carry out spatial interpolation operation on precipitation and evapotranspiration, and perform resampling operation on vegetation health index to obtain corresponding grid data in the study area to ensure soil moisture data, precipitation data, The spatial resolution of the evapotranspiration d...
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