نتایج جستجو برای: normalized dust difference index
تعداد نتایج: 858485 فیلتر نتایج به سال:
The aim of this study was to evaluate the frequency and severity drought over arable lands Romania using Normalized Difference Drought Index (NDDI). This index obtained from Moderate Resolution Imaging Spectro-Radiometer (MODIS) sensor Terra satellite. interval between March September investigated occurrence early stage crop growth its harvest time. covered a long period (2001–2020), hence it i...
With the advent of advanced geographical informational systems (GIS) and remote sensing technologies in recent years, topographic (elevation, slope, and aspect) and vegetation attributes are routinely available from digital elevation models (DEMs) and normalized difference vegetation index (NDVI) at different spatial (watershed, regional) scales. This study explores the use of topographic and v...
particulate matters commonly found dispersed in the atmosphere are composed of a large variety of substances. dustfall is the usual index of particles in the size range greater than 10 m. two semi automated so2 sampling units were installed in tehran university campus (from 21 january 1973 to 22 dec. 1974) and gheitarieh area (from 23 august to 23 oct. 1974) hydrogen peroxide method was used fo...
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