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Lenaerts, J.T.M. (author), Medley, Brooke (author), van den Broeke, Michiel R. (author), Wouters, B. (author)Surface mass balance (SMB) provides mass input to the surface of the Antarctic and Greenland Ice Sheets and therefore comprises an important control on ice sheet mass balance and resulting contribution to global sea level change. As ice sheet SMB varies highly across multiple scales of space (meters to hundreds of kilometers) and time (hourly...journal article 2019