Researchers have shown that a new mid-infrared spectrometer can precisely measure the ratios of different forms of water—known as isotopologues—in atmospheric water vapor through open air in a little over 15 minutes. Isotopologue ratios, which can be affected by land-based water evaporation and plant transpiration, are used to develop models of climate change and to understand how water is transported globally in the atmosphere.
Click here for original story, Researchers measure atmospheric water vapor using open-air spectroscopy
Source: Phys.org