Daily variation of radon gas and its short-lived progeny concentration near ground level and estimation of aerosol residence time
Mohery M1, 2, †, , Abdallah A M1, Ali A3, 4, Baz S S5
       

(a) Average diurnal variation of 222Rn and its short-lived progeny concentration for each season over a period of one year (November 2014-October 2015) for surface air measurements at Jeddah, KSA. (b) Average diurnal variation of relative humidity, air temperature and wind speed for each season over the same period of a year (November 2014-October 2015) for surface air measurements at Jeddah, KSA.