IAP PhD candidate Zhang Jie passed her thesis defense in Paris on 20 Dec, 2010 and received her PhD degree from Université Pierre et Marie Curie. Supported by the protocol of Sino-French Joint PhD Scholarship Program, Zhang Jie studied at CNRS-LMD under the joint supervision of Prof. Laurent Li (CNRS-LMD, France), and Zhou Tianjun  (IAP, China). Her PhD thesis is about General features of climate changes during the last 1000 years in a climate system model.