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Example time series of within-chamber air temperature (Tair) and RH (A), δ2H (B), and δ18O (C) of transpired water vapor for an individual plant (T. chinensis) during the period of enclosure within a whole-canopy chamber for online, continuous transpiration isotope measurements. The shaded region denotes the period of ISS. The solid and dashed horizontal lines in B and C indicate isotope ratios of cryogenically extracted soil (or source water) and stem water, respectively.
