Impact of climate fluctuations on deposition of DDT and hexachlorocyclohexane in mountain glaciers: evidence from ice core records.
How do climate fluctuations affect DDT and hexachlorocyclohexane (HCH) distribution in the global scale? In this study, the interactions between climate variations and depositions of DDT and HCH in ice cores from Mt. Everest (the Tibetan Plateau), Mt. Muztagata (the eastern Pamirs) and the Rocky Mountains were investigated. All data regarding DDT/HCH deposition were obtained from the published results. Concentrations of DDT and HCH in an ice core from Mt. Everest were associated with the El Nino-Southern Oscillation. Concentrations of DDT in an ice core from Mt. Muztagata were significantly correlated with the Siberia High pattern. Concentrations of HCH in an ice core from Snow Dome of the Rocky Mountains responded to the North Atlantic Oscillation. These associations suggested that there are some linkages between climate variations and the global distribution of persistent organic pollutants.
Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China. wangxp@itpcas.ac.cn
Xiaoping
X
Wang
Ping
P
Gong
Qianggong
Q
Zhang
Tandong
T
Yao
D001955:British Columbia; D002980:Climate; D003634:DDT / Q000032:analysis*; D004784:Environmental Monitoring / Q000706:statistics & numerical data*; D001556:Hexachlorocyclohexane / Q000032:analysis*; D046448:Ice Cover / Q000737:chemistry*; D009390:Nepal; D012044:Regression Analysis; D018609:Tibet
D001556:Hexachlorocyclohexane; D003634:DDT