Polar Week Fall 2016 Figure Competition

Acquisition of the isotopic composition signal in Polar Region: first, during evaporation, the clouds are depleted in heavy isotopes by the cumulated effect of equilibrium fractionation at the phase transition and kinetic fractionation; second, the cloud isotopic composition is depleted at each precipitation events as the heavy isotopes are preferentially found in the condensed phase; finally, in remote polar region, due to the low amount of precipitation and it is necessary to take into account post-deposition processes in the isotopic budget of the snow.

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