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000002919 005__ 20160915110929.0
000002919 0247_ $$2DOI$$a10.1002/2016GL070534
000002919 037__ $$aSCART-2016-0016
000002919 100__ $$aVan Camp, Michel
000002919 245__ $$aDirect measurement of evapotranspiration from a forest using a superconducting gravimeter
000002919 260__ $$c2016
000002919 520__ $$aEvapotranspiration (ET) controls the flux between the land surface and the atmosphere. Assessing the ET ecosystems remains a key challenge in hydrology. We have found that the ET water mass loss can be directly inferred from continuous gravity measurements: as water evaporates and transpires from terrestrial ecosystems, the mass distribution of water decreases, changing the gravity field. Using continuous superconducting gravity measurements, we were able to identify daily gravity changes at the level of, or smaller than 10^-9 nm.s-2 (or 10^-10 g) per day. This corresponds to 1.7 mm of water over an area of 50 ha. The strength of this method is its ability to enable a direct, traceable and continuous monitoring of actual ET for years at the mesoscale with a high accuracy.
000002919 594__ $$aNO
000002919 6531_ $$aEvapotranspiration
000002919 6531_ $$aDeciduous forest
000002919 6531_ $$aSuperconducting gravimeter
000002919 6531_ $$aTime variable gravity
000002919 700__ $$ade Viron, Olivier
000002919 700__ $$aPajot-Métivier, Gwendoline
000002919 700__ $$aCasenave, Fabien
000002919 700__ $$aWatlet, Arnaud
000002919 700__ $$aDassargues, Alain
000002919 700__ $$aVanclooster, Marnik
000002919 773__ $$pGeophysical Research Letters$$v43$$y2016
000002919 8560_ $$fmichel.vancamp@observatoire.be
000002919 85642 $$ahttp://dx.doi.org/10.1002/2016GL070534
000002919 905__ $$apublished in
000002919 980__ $$aREFERD