Intra-annual tree-ring δ18O variations in subtropical China reflect seasonal transitions in climate response
Guobao Xu1,2, Valerie Trouet1 and Xiaohong Liu3, (1)University of Arizona, Laboratory of Tree-Ring Research, Tucson, AZ, United States, (2)Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China, (3)Shaanxi Normal University, Xi'an, China