The data are reprojected and interpolated from their original polar stereographic projection at 10km spatial resolution to the 4km Pathfinder Version 5.3 grid. When the OSISAF data are not available for both hemispheres on a given day, the sea ice concentration data are taken from the sea_ice...
The data are reprojected and interpolated from their original polar stereographic projection at 10km spatial resolution to the 4km Pathfinder Version 5.3 grid. When the OSISAF data are not available for both hemispheres on a given day, the sea ice concentration data are taken from the sea_ice...
AVHRR stands forAdvanced Very High-Resolution Radiometer. “Very high resolution” is a bit of a misnomer. This is because itsspatialresolutionis actually very coarse at 1.1 km. So the “very high resolution” refers to its daytemporalresolutionand revisit times. Because of its high temporal res...
Relatively short time intervals between observations in conjunction with global coverage twice a day, high spatial resolution and radiometric sensitivity of the NOAA radiometers make such pairs superior to any geosynchronous satellite even at low and middle latitudes, while providing the only means of ...
Satellite data from the Advanced Very High Resolution Radiometer (AVHRR) provides the main input which permits the high temporal-spatial coverage beginning in late 1981 to the present. 此星光明 2024/02/02 3950 Google Earth Engine ——比Landsat更全的NDVI数据NOAA CDR AVHRR NDVI)1981-2019年0.05 ...
Areal rainfall averages derived from rain-gauge observations suffer from limitations not only due to sampling but also because gauges are usually distributed with a spatial bias towards populated areas and against areas with high elevation and slope. For a large river basin, however, heavy rainfall...
Due to their coarse spatial resolution, however, the problem of mixed pixels has to be addressed. Traditional hard classification approaches cannot be applied because of sub-pixel heterogeneity. We evaluate neural networks as a modeling tool for sub-pixel crop acreage estimation. The proposed ...
their spatial resolution, 2. pixel locational errors, 3. sampling biases and systematic errors introduced during the production of the data, and 4. the presence of signal noise in multi-temporal profiles of the data. The paper concludes that these errors may prove a considerable limitation to ...
FireCCILT11 showed consistency during both AVHRR2 and AVHRR3 periods and showed similar global and regional BA trends to FireCCI51 and MCD64A1. Despite its lower spatial resolution, the use of BA proportions allowed to obtain a total BA similar to the MODIS products. Annual and monthly ...
Instead of correlation coefficients, spatial correlation through visual comparison was found to provide better and more meaningful pictures. The highest correlation values were obtained when VHI or Drought Severity Index (DSI) values were correlated with the current month's SWI data. DSI maps showed ...