Instruments for studying evaporation (up at about 1,000 feet on the tower), and a NOAA P-3 aircraft doing simultaneous measurements for calibration and verification. Instruments will be tested on Great Lakes freighters, August 2014. Credit: ESRL Boulder Atmospheric Observatory
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/43788330@N05">NOAA Great Lakes Environmental Research Laboratory</a>
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