Remote sensing based retrieval of snow cover properties Case study (Shirkooh Mountain Yazd, Iran)
Journal Title: International journal of Advanced Biological and Biomedical Research - Year 2014, Vol 2, Issue 5
Abstract
Snow cover area is one of the most important criteria to calculate snow melt runoff. This can have an effect on the biology of the plant and the environment of a region. Using the catchment basin physical characteristic to calculate snow cover area is a conventional method, though its accuracy is not good enough. Most of the useful methods in calculating snow cover area are based on satellite images and remote sensing methods. In this research, based on satellites images and Weather-station data, two methods have been used to calculate snow cover properties. As MODIS images have better spatial/spectral resolution in comparison with other similar Satellite images like NOAA/AVHRR, they are more suitable to distinguish snow from cloud. In this research, Normalized Difference Snow Index (NDSI), and threshold technique have been used to snow cover properties in Shirkooh Mountain. In first step, snow cover were separated based on NDSI. Then, optimum threshold was determined for three spectral bands (2, 4 and 6) to separate snow from clouds and other wet resources. Furthermore, ASTER images which have 15m spatial resolution, have been used as base images to check the accuracy of snow cover areas that extracted from MODIS images. The results show that correlation between the snow cover area extracted from ASTER and MODIS images is about 0.87. Also, since the correlation obtained from the snow pixels reflectance and snow Persistence is more than 0.5, by using these images, snow Persistence can be estimated.
Authors and Affiliations
A. Sarkargar. Ardakani| Assistant professor in Emam Hossin University, Babaei Highway, Tehran. Iran
Keywords
Related Articles
- EP ID EP13266
- DOI -
- Views 289
- Downloads 12
Effect of Selenium spraying on yield and growth indices of Wheat (Triticum aestivum L.) under drought stress condition
An experiment was conducted in order to evaluate the effects of Se spraying on yield and growth indices of wheat under drought stress condition, in agriculture and natural resource research center of Tehran province in...
An Examination of the Ecological Effects of Pure and Mixed planting on the Production Grasses and the Living Place of Weeds Under the Dry Farming Condition
In order to examine the impact of pure and mixed planting on the production of grasses and also the biological control of weeds an experiment was conducted in the research farm of Alashtar city of Lorestan province betwe...
Searching for Alpha-Glucosidase Inhibitory Activity in Hexane Extracts by some Plants from Kurdistan Province
Objective: Alpha-glucosidase, as a carbohydratase catalyses the liberation of alphaglucose from the nonreducing end of some carbohydrates from foods in digestive tract. Consequently, retard absorption of glucose by the...
The Effect of Supplemental Irrigation and Cultivars on Population of Safflower Fly (Acanthiophilus Helianthi Rossi.)
Damage caused by water shortages leads to physiological and biochemical changes in metabolism of plants and make them predispose to attack by pests and diseases and reduce the quality of the crops. In order to evaluate t...
Investigating the Effect of Washing, Saturating and Cooking Procedures on the Residual Amounts of Butachlor and Diazinon Vegetable Pesticides in White Rice
Objective: The usage of pesticides has increased during the recent years. One the other hand, presence of harmful pesticides residue in rice and other food has caused a great concern among the consumers. Therefore, it...