نتایج جستجو برای: aster gdem v2
تعداد نتایج: 11635 فیلتر نتایج به سال:
Slope has obvious scale-dependent characteristics and it changes with the change in DEM resolution, which brings uncertainty to evaluation process of regional resource environment. In this paper, one typical county each six water erosion regions China was selected as sample area, respectively. Based on data ALOS DEM, ASTER GDEM SRTM different spatial resolutions, slope characteristics, such gra...
In this study, we comparison of NDVI of ground measurement, atmospheric corrected ASTER LIB data and ASTER surface reflectance product (AST07) data to evaluate the accuracy of the ATCOR software atmospheric correction of Terra/ASTER data (Jun 30, 2002), using ground radiometric measurement data (ASD's FieldSpec® Pro). Our research selected the study area Sarobetsu Marsh located in coastal area ...
atmospheric correction of the satellite data, for example correction of visible and near-infrared spectral bands, requires removing the adjacency effect that is due to the reflection from contiguous pixels. To evaluate the accuracy of the ATCOR software atmospheric correction method of Terra/ASTER data (Jun 30, 2002) we compared the NDVI parameters taken from different sources, such as ground m...
ASTER stereo and ASTER infrared (IR) retrieved cloud top heights (CTHs) at 90 m spatial resolution are compared to operational Multi-Angle Imaging SpectroRadiometer (MISR) stereo and MODerate Resolution Imaging Spectroradiometer (MODIS) thermal IR techniques at 1100 m and 5000 m spatial resolution, respectively. ASTER data availability limits this study to trade wind cumulus clouds only. ASTER ...
Glaciers in High Mountain Asia (HMA) have a significant impact on human activity. Thus, detailed and up-to-date inventory of glaciers is crucial, along with monitoring them regularly. The identification debris-covered fundamental yet challenging component research into glacier change water resources, but it limited by spectral similarities surrounding bedrock, snow-affected areas, mountain-shad...
[1] A three-dimensional absolute velocity field on the isopycnal surface in the northwest Pacific subtropical region in the summer is calculated from the Navy’s Generalized Digital Environmental Model (GDEM) climatological temperature and salinity data on a 0.5 0.5 grid using the P-vector method. GDEM for the area was built from historical (1930–1997) temperature and salinity profiles. The basi...
As the impacts of global climate change, rapid economic development, and anthropogenic activities on environment are intensifying, it is becoming increasingly apparent that we need to understand ecological conditions their responses change human disturbances. The objective this study was present an assessment Kaikukang–Walagan District using remotely sensed index (RSEI) newly introduced integra...
A new Global Digital Elevation Model is being generated at 30" resolution by combining the best available ground truth with a unique global database of satellite altimeter derived heights. This model, ACE (Altimeter Corrected Elevations) demonstrates radically improved spatial accuracy and resolution over large parts of the globe, in particular over Africa and South America. The independent alt...
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