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Spatial and Temporal Validation of In-Situ and Satellite Weather Data for the South West Agricultural Region of Australia

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Journal of Meteorological Research 2022年第1期36卷 175-192页

作者： Tristan CAMPBELL Peter FEARNS Centre for Mine Site Restoration Curtin University of TechnologyWA 6102Australia Remote Sensing and Satellite Research Group Curtin University of TechnologyWA 6102Australia

Seasonal variations in weather have significant impacts on crop *** accuracy of weather data is an important consideration for crop yield *** study uses an independent in-situ weather station network to validate the accuracy of monthly temperature and precipitation data from the in-situ weather station network operated by the Bureau of Meteorology(BOM),interpolated gridded data from this network,and satellite weather data for the South West Agricultural Region of *** region covers five classes of the K?ppen-Geiger climate classification system and is responsible for 10 billion AUD of agricultural produce annually.A strong bias was found for the maximum temperatures in the Copernicus LST(land surface temperature)satellite *** bias was linearly correlated with the in-situ temperature and exceeded 20℃in warmer *** to the bias’s linear nature,a linear correction was able to reduce the root-mean-square error(RMSE)of the Copernicus LST product by 82%.This process was tested for other regions of Australia and,despite some regional differences,a linear correction consistently reduced RMSE by 80%.The validation process demonstrated that the dataset with reliably the lowest RMSE is the gridded weather data calculated from BOM’s in-situ weather *** neighbor in-situ weather stations generally had the next lowest RMSE,followed by weather-station corrected satellite products and lastly the non-weather station corrected satellite *** the in-situ gridded product generally had the lowest RMSE,there were spatial and seasonal *** maximum temperatures were more accurately measured by the bias-corrected Copernicus LST product in the northern and eastern extents(where there is a lower density of BOM in-situ stations).Monthly minimum temperatures from the Copernicus LST product had similar to slightly better RMSE than the australian water availability project(AWAP)product for the southern half of the study ar

关键词： australian water availability project land surface temperature satellite precipitation validation

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