One of Stan Changnon’s abiding interests is the frequency and pattern of large hail occurrence. Stan started publishing papers in AMS journals on the occurrence of large hail in 1966. After that initial effort, Stan has published 27 papers in AMS journals alone. When other journals, such as those of the AGU, Conference Preprints, and Technical Reports are added, Stan has an amazing record of do...

This paper proposed an efficient approach, for weather Radar image classification and filtering, which is based on the combination of the textural analysis and support vector machine (SVM). Since the images are formed by two kinds of echoes, precipitations (rainfalls) and ground echoes (clutter), caused by earth's surface, thus, our purpose is to preserve precipitations and eliminate ground ech...

in different regions, precipitation takes place with different persistencies and every persistency supplies a share of rainfall days and precipitation. therefore, the importance of rainfall persistence could be evaluated in all places. iran is located in mid-latitude of an arid region, in which the mean rainfall is 250 mm and it has dramatic tempo-spatial changes. rainfalls with short persisten...

2. Chinese Academy of Meteorological Sciences, Beijing,10086 Abstract Using OTT-Parsivel Laser Particle Spectrometer at Nanjing in East China, several times heavy rain droplet scale & velocity spectral data aquatic from Mt. Lushan weather stations (elevation 1300meters) Compared to the plain deep convective clouds heavy precipitation, the rain droplet size distribution (DSD) with two elevation ...

A large quantity of world’s oil reserves exists in carbonate reservoirs. Carbonate reservoirs are very sensitive to chemical enhanced oil recovery process because of containing large amount of calcite, dolomite and calcium sulfate minerals. These minerals cause major obstacles during alkali-surfactant-polymer (ASP) flooding. Alkali reacts with these minerals and form undesired precipitations wh...

Climate is complex ecological factor described by different climate elements and phenomena that effect development of vegetation and its natural distribution. Climate elements the most important for vegetation are air temperatures, amount of precipitations, air humidity and wind. The aim of this research was to determine trends and changes of climate elements in the region of Mediterranean Croa...

Abstract SSM/I has been applied in derivation of liquid water and precipitation for many years. Due to the uncertainty in variance of surface emissivity and characters of precipitation, the comparison of rainfall retrieval with ground truth remains a controversial issue. In order to investigate this issue, data set for precipitation from stratus clouds over ocean area were collected for 5 years...

Due to climate change, frequencies of natural disasters, including earthquake, hurricane, typhoon and heavy precipitations, increase rapidly. The emergency distribution center (EDC) plays an important role in emergency planning and disaster response. During the process of delivering relief to shelters, the infrastructure could be deteriorated by the disaster. Most of the existing models neglect...

The use of more and more high frequency bands is presently one of the major trends in the satellite communications field. Several important advantages can be achieved by increasing frequency against a sensible impact with atmospheric effects, in particular with the heavy fading induced by rain precipitations. In the last few years, several methods based on adaptive techniques to counteract the ...