r 





' I » 



\ f— ^-^ 



-^.-v- 



'N 



\ _- 'V 



60° N 



^ 160 E 170^ 18p°E 





'■/ ~- 



_L 



Fig. 1. Five day back air trajectories during Cruise AK-47. Location the samples were taken, and the termination of the air trajectory: □ 925 mb trajectory. 

 O X.'iO mb trajectory. Each symbol denotes a six hour period. Following is the date of the sample and corresponding air: A, July 30, 1988-LAIR2, HAIRl : 

 B. August4, l988-LAIR5:C.Augusl7, 1988-LAIR6;D.Augu.st 10, 1988-LAIR8,HA1R2:E, August 13, I988-LAlR10;andF, Augu.st28, 1988-LAIR18, 

 HAIR4. 



273 



