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Measurement and Interpretation of Water Vapor Isotopic Fluxes Xuhui Lee

Yale University School of Forestry and Environmental Studies. Measurement and Interpretation of Water Vapor Isotopic Fluxes Xuhui Lee. Collaborators. University of Minnesota John Baker, Tim Griffis Yale University Kyounghee Kim, Ron Smith, Lisa Welp Campbell Scientific

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Measurement and Interpretation of Water Vapor Isotopic Fluxes Xuhui Lee

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  1. Yale University School of Forestry and Environmental Studies Measurement and Interpretation of Water VaporIsotopic FluxesXuhui Lee

  2. Collaborators University of Minnesota John Baker, Tim Griffis Yale University Kyounghee Kim, Ron Smith, Lisa Welp Campbell Scientific Steve Sargent, Bert Tanner Chinese Academy of Sciences Xiaomin Sun, Xuefa Wen, Guiru Yu

  3. Transpiration, photosynthesis, leaf water enrichment, and the Pelect effect sunlight H2O + CO2 CH2O + O2 xylem water

  4. TDL system for measuring water vapor and flux isotope ratios air 2 air 1 N2 gas bypass flow gradient interface 5 4 3 dry air sample cell 2 1 manifold reference cell dripper pump enriched water Flux isotope ratio

  5. Soybean field, Minnesota

  6. Instrument TowerGreat Mountain Forest, Connecticut

  7. Eddy Covariance Instrument, Great Mountain

  8. Tunable Diode Laser Analyzer, Great Mountain

  9. Dripper Calibration Device

  10. Water Vapor GradientAug 30 – Sep 7, 2005 Rain Dew

  11. Seasonal variation of dET, dP and dXGreat Mountain, 2005 xylem water of overstory trees ET precipitation

  12. Isotopic composition of water pools Soybean field, Minnesota, 2006

  13. 18O in H2O and CO2Soybean, Minnesota, 2006

  14. CO2 and 18O-CO2 ProfilesSoybean, Minnesota, 2006

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