A model for the isotopic composition in .50 and .5 180 of ice formed by refreezing at the glacier sole is developed. This model predicts relatively well the distribution of points representing samples from basal layers of an Arctic a nd an Alpine glac ier on a .50.5 180 diagram . The frozen fraction which is the part of the liquid that refreezes can be determined for each basal ice layer. This ...

Abstract Recent progress has been made in quantifying snowmelt the Himalaya. Although conditions are favorable for refreezing, little is known about spatial variability of meltwater hindering a complete understanding seasonal dynamics. This study aims to improve our how refreezing varies space and time. We simulated with seNorge (v2.0) snow model Langtang catchment, Nepalese Himalaya, covering ...

We present in situ firn temperatures from the extreme 2012 melt season in the southwestern lower accumulation area of the Greenland ice sheet. The upper 2.5 m of snow and firn was temperate during the melt season, when vertical meltwater percolation was inefficient due to a 5.5 m thick ice layer underlying the temperate firn. Meltwater percolation and refreezing beneath 2.5 m depth only occurre...

Sea ice breaks up and regenerates rapidly during winter conditions in the Arctic. Analyzing satellite data from the Kara Sea, we find that the average ice floe size depends on weather conditions. Nevertheless, the frequency of floes of size A is a power law, N ∼ A−τ , where τ = 1.6 ± 0.2, for A less than approximately 100 km. This scale-invariant behaviour suggests a competition between fractur...

Abstract In recent decades, surface melting on the inland Greenland ice sheet has increased, leading to significant meltwater-refreezing in snow and firn. Increased knowledge of physical chemical characteristics these melt features (i.e., layers) is needed help estimate future global sea-level rise. Here, using a combination microscopy spectroscopy, we investigate size, shape, location, composi...

Snow dynamics play a crucial role in the hydrology of alpine catchments Himalaya. However, studies based on in-situ observations that elucidate energy and mass balance snowpack at high altitude this region are scarce. In study, we use meteorological snow two high-altitude sites Nepalese Himalaya to quantify seasonal snowpack. Using data driven experimental set-up aim understand main drivers sno...