مصطفى جرار
New Member
- إنضم
- 27 ديسمبر 2008
- المشاركات
- 97
- النقاط
- 0
Bromine oxide- ozone interaction over the dead sea
The results showed a diurnal repeating cycle of ozone and Bro variations correlated with solar radiation and wind direction. During the elevated Bro events. Where bromine oxide rose to daily maximum values often exceeding 100ppt. A clear negative correlation with ozone was observed.
During these episodes. The ozone regularly decreased from noontime levels of 50-80pp or higher down to 10-30ppb and occasionally to levels below the detection limit of 2ppb. The enhanced Bro levels were associated with southerly winds that are typical for location during midday hours. This suggests that possible source for the reactive bromine species is the interaction of atmospheric oxidants with bromide at the surface of large salt pans located at southern end of the dead sea. Research flights flown over the area showed that ozone destruction to levels well below the background values were observed over large areas of the dead sea valley. 