Taking the pulse of snowmelt: in situ sensors reveal seasonal, event and diurnal patterns of nitrate and dissolved organic matter variability in an upland forest stream - Pellerin, Brian A.; Saraceno, John Franco; Shanley, James; Sebestyen, Stephen; Aiken, George; Wollheim, Wilfred M.; Bergamaschi, Brian A. (Biogeochemistry, 2011)