Forecasting seasonal snow cover is useful for planning resources and mitigating natural hazards. We present a link between the North Atlantic Oscillation (NAO) index and days of snow cover in Scotland between winters beginning from 1875 to 2013. Using broad (5 km resolution), national scale data sets like UK Climate Projections 2009 (UKCP09) to extract nationwide patterns, we support these findings using hillslope scale data from the Snow Survey of Great Britain (SSGB). Currently collected snow cover data are considered using remotely sensed satellite observations, from moderate-resolution imaging spectroradiometer; but the results are inconclusive due to cloud. The strongest correlations between the NAO index and snow cover are found in eastern and southern Scotland; these results are supported by both SSGB and UKCP09 data. Correlations between NAO index and snow cover are negative with the strongest relationships found for elevations below 750 m. Four SSGB sites (two in eastern Scotland, two in southern Scotland) were modelled linearly with resulting slopes between −6 and −16 days of snow cover per NAO index integer value. This is the first time the relationship between NAO index and snow cover duration has been quantified and mapped in Scotland.
- IWA Publishing
- Scottish snow cover dependence on the North Atlantic Oscillation ...
Lufft snow height sensor SHM30 at ICIMOD-station in Yala Glacier, Nepal - Case Study
Langtang is a region in the Himalayas of Nepal to the north of the Kathmandu Valley and bordering Tibet. Since 2011, it has been the focus of intense glaciological, meteorological, and hydrological fieldwork over the past four years as part of the Norwegian-supported cryosphere monitoring project (Cryosphere Monitoring Program CMP). In order to observe air temperature, wind speed, solar radiation, precipitation and water levels in the area, which is mainly difficult to access and to supply with electricity,...
Weather measurement in extreme conditions - Whistler Mountain - Case Study
Whistler Blackcomb mountain is a premiere winter resort in British Columbia Canada. Some months ago our subsidiary "LufftUSA" installed the first Ventus-UMB ultrasonic anemometer atop a main ski lift on the Whistler mountain. The first winter storm passed leaving the entire mountain and all mechanical equipment covered in snow and ice... except the Ventus-UMB. The Ventus-UMB continued to give accurate wind speed and wind direction data through the storm. Now there is a plan to install more Ventus-UMB sensors at...
Meteorological network of weather stations trusts in Lufft sensors in Italy - Case Study
Between 2009 and beginning of 2010 a huge meteo measurement network with more than 100 stations were build in the north and middle of Italy (Emilia Romagna, Ligurien, Toscana). The aim of the project was the extensively coverage for measurement of all important environmental data such as temperature, humidity, rain fall, wind speed and wind direction. The customer Autostrade per l`Italia decided to invest in Lufft sensors due to the possible differentiation of rain and snow fall with the radar sensor, the simple...
Snow studies track changes in water availability
New analysis of snowpack data by two research groups has changed conventional understanding of the mechanics of snowmelt: Both teams found warmer weather may change the amount of snow as well as how it melts.These studies are important in developing a better understanding of the amount of water available in snow (known as snow-water equivalent). This information can be used to calculate the amount of runoff bound for reservoirs and available for hydrogeneration. Understanding this influence on water shortages and...
How important are water, snow and ice layers for the friction?
A recent research project of the Technical University of Berlin (TU Berlin) aimed to develop a method for predicting the friction coefficient on the road. To achieve this, the team of the university’s automotive engineering section carried out extensive braking tests. For this, an important technical aid from Lufft mustn’t be left out… What influences friction on surfaces the most? Opinions about what influences friction tend to vary extremely: Up to now, there is neither a general algorithm...