Journal Title
Title of Journal: J Earth Syst Sci
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Abbravation: Journal of Earth System Science
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Authors: K Charan Kumar T Rajendra Prasad M Venkat Ratnam Kamsali Nagaraja
Publish Date: 2016/09/28
Volume: 125, Issue: 7, Pages: 1391-1397
Abstract
Analysis of one year measurements of in situ radon 222Rn and its progenies along with surface air temperature relative humidity and pressure near to the Earth’s surface has been carried out for the first time at the National Atmospheric Research Laboratory NARL 135∘N and 792∘E located in a rural site in Gadanki south India The dataset was analysed to understand the behaviour of radon in relation to the surface air temperature and relative humidity at a rural site It was observed that over a period of the 24 hours in a day the activity of radon and its progenies reaches a peak in the morning hours followed by a remarkable decrease in the afternoon hours Relatively a higher concentration of radon was observed at NARL during fair weather days and this can be attributed to the presence of rocky hills and dense vegetation surrounding the site The high negative correlation between surface air temperature and activity of radon R = – 070 on an annual scale suggests that dynamical removal of radon due to increased vertical mixing is one of the most important controlling processes of the radon accumulation in the atmospheric surface layer The annual averaged activity of radon was found to be 1201±066 Bq m−3 and 425±018 Bq m−3 for its progenies in the study periodAuthors are thankful to the Director National Atmospheric Research Laboratory Gadanki India for the constant encouragement and extending all the facilities to carry out the experiments at Gadanki and also to the Indian Space Research Organization ISRO Government of India for financial assistance to carry out the present research work
Keywords:
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