The residence time of atmospheric aerosol particles is a function of various removal processes, such as dry deposition by impaction, diffusion, sedimentation and resuspension as well as wet deposition by rain drops (precipitation scavenging). Estimation of the mean-residence time of atmospheric aerosols could be based on measurements of the activities and ratios of activities of cosmic-ray prod...

in this research, for synchronization analysis of black sea high pressure with daily precipitation in iran data base have been created with using the sea level pressure data in reanalysis ii database in national centers for environmental prediction(ncep)/national center for atmospheric research(ncar). temporal resolution of data is daily and spatial resolution is 2.5 㗠2.5 degrees of arc. fram...

Observations of Titan's mid-latitude clouds from the W. M. Keck and Gemini Observatories show that they cluster near 350 degrees W longitude, 40 degrees S latitude. These clouds cannot be explained by a seasonal shift in global circulation and thus presumably reflect a mechanism on Titan such as geysering or cryovolcanism in this region. The rate of volatile release necessary to trigger cloud f...

Tumkur Taluk is located in the southeastern corner of Karnataka state between 13 degrees 06'30'' to 13 degrees 31' 00'' North latitude and 76 degrees 59' 00'' to 77 degrees 19' 00'' East Longitude. The Taluk spreads over an area of 1043 sq.km falling within the semiarid region and frequently facing water scarcity as well as quality problems. The major sources of employment are agriculture, hort...

Mauritius forms part of the Mascarene Islands of the Indian Ocean and is situated ca. 700 km to the east of Madagascar at latitude 20 degrees S and longitude 57.5 degrees E. Mauritius has jurisdiction over a proclaimed Exclusive Economic Zone that stretches over 1,900,000 km2. This extensive area holds an immense potential for exploration and presents a wide range of scientific and industrial c...

The haplogroup identities of 800 mtDNAs randomly and systematically selected to be representative of the population of Puerto Rico were determined by restriction fragment length polymorphism (RFLP), revealing maternal ancestries in this highly mixed population of 61.3% Amerindian, 27.2% sub-Saharan African, and 11.5% West Eurasian. West Eurasian frequencies were low in all 28 municipalities sam...

abstractâ in this study, for spatial-temporal analyzing of cyclones in 1376, the spatial range of 30 to 80 degrees of east longitude and 0 to 80 degrees of north latitude and geo potential data with 2/ 5* 2 / 5 degrees of networking in arc levels of 1000, 925, 850, 700, 600 and 500 hpa have been used. these data are extracted for six hours (00, 06, 12, 18 zulu) database (ncep / ncar). so that, ...

The study features an analysis of 40 years of records of longitude, latitude and power (wind speed) of tropical storms and typhoons over South East Asia seas. The results demonstrate the growing intensity of the most severe events. The singular spectrum analysis of wind speed series from 1960 till 2000 identified two sub-periods of roughly similar behavior. Then, the recorded events were classi...