John’s paper titled “Controls on Spatial and Temporal Variability in Northern Hemisphere Terrestrial Snow Melt Timing, 1979–2012” is published in the Journal of Climate. See more here: http://journals.ametsoc.org/doi/abs/10.1175/JCLI-D-14-00558.1
Full citation: Mioduszewski, J. R., Rennermalm, A. K., Robinson, D. a. and Wang, L.: Controls on Spatial and Temporal Variability in Northern Hemisphere Terrestrial Snow Melt Timing, 1979–2012, J. Clim., 28(6), 2136–2153, doi:10.1175/JCLI-D-14-00558.1, 2015.