TY - Generic T1 - Maximum snowmelt rates: some observations T2 - 66th Annual Western Snow Conference Y1 - 1998 A1 - Kattelmann, R.C. A1 - Cooley, K.R. A1 - Palmer, P.L. KW - SNOTEL, Snowmelt AB - In response to discussion and debate about how fast snow can melt under extreme conditions, this paper identifies and interprets some reported observations of rapid snowmelt rates. Energy availability suggests that maximum snowmelt under typical conditions in the mountains of North America is about 50 mm per day. Conditions that enhance snowmelt rates include long day-length near the summer solstice, clear skies during daytime combined with cloud cover at night, warm and humid air combined with high wind speeds, particulate matter in the near-surface snow layer, and discontinuous snow cover that is thin enough for sunlight to penetrate to the ground surface. Records of snowmelt rates from four research sites and more than ninety SNOTEL sites provide the observational basis to discuss empirical estimates of maximum melt water generation. JF - 66th Annual Western Snow Conference T3 - Proceedings of the 66th Annual Western Snow Conference PB - Western Snow Conference CY - Snowbird, Utah UR - sites/westernsnowconference.org/PDFs/1998Kattelmann.pdf ER -