The hydrochemical and stable isotope composition of fresh surface water in rivers (Sieber and Oder) of a karst area in the southwestern foreland of the Harz Mountains, Germany, was investigated at several occasions between years 1986 and 1992. The campaigns covered different seasonal and hydrological (discharge) conditions, including a snow-melt induced high water at the rivers. Aim of the study was the investigation of the impact of discharge conditions at the river water loosing water to underground passage in the Basin of Pöhlde, dissolving carbonate and sulfate minerals in the karst aquifers, and reappearing in the karst springs of the Rhume river. Besides physical characterization, hydrochemical major and minor elements were measaured, as weill as the carbon isotope composition of DIC, the sulfur and oxygen isotope composition of sulfate, and the oxygen isotope composition of water. Results reflect the impact of hydrological conditions on the subterrestrial carbon and sulfur cycles.
This data resource contains 9 files, created as part of the work "Spatio-temporal Patterns of High Mountain Asia's Snowmelt Season Identified with an Automated Snowmelt Detection Algorithm, 1987-2016" by T. Smith, B. Bookhagen, and A. Rheinwalt (http://doi.org/10.5194/tc-2017-67). Full description of the methods can be found in the published paper. Data tracks the onset, end, and length of the snowmelt period in High Mountain Asia over the period 1987-2016.
Three HDF files (.h5) containing Snowmelt Onset, End, and Period lengths for 1987-2016 (shape 111 x 81 x 29). Numbers are provided relative to October First, previous year (ie, Snowmelt onset in 1988 is Onset + Oct 1, 1987).
Six TIF files, showing the average Snowmelt Onset, End and Period and Trends in the same three variables. Data format is GeoTIFF.
Rain-on-snow events with combined snow melting and rainfall is a frequent cause of floods in Europe. Reflecting possible long-term changes in climate conditions, there is the question of climate change impacts on the runoff regime at the regional and local scale. An important part of the research in mountain areas is therefore the issue of possible future changes in snow and glacier melt regimes. The main objective of this project is to contribute to research on processes connected with snow accumulation and melting as a factor of flood risk in the context of changing environment and climate change. The main focus will be possible future changes in snowpack using regional climate models (RCM) and impacts on runoff regime of mountainous basins. The project solution will lean on up-to-date hydrological and geoinformation methods and tools, which are presently applied for modelling the runoff from melting snow. The research will be carried out in selected middle-large basins in Switzerland and in the Czech Republic. Modelling the evolution of the snowpack (snow cover area, snow water equivalent, snowpack duration etc.) will be made by means of energy balance and temperature-index modelling techniques. Simulations using results from RCMs models will be made in order to simulate possible future changes of above mentioned snowpack.