Water vapor δ17O measurements using an off-axis integrated cavity output spectrometer and seasonal variation in 17O-excess of precipitation in the east-central United States

Chao Tian, Indiana University Purdue University Indianapolis, Department of Earth Sciences, Indianapolis, IN, United States, Lixin Wang, Indiana University Purdue University Indianapolis, Indianapolis, IN, United States and Kimberly A Novick, Indiana University Bloomington, Bloomington, IN, United States