snow data Articles

  • Understanding the impact of snow`s reflectance

    To help improve the accuracy of climate models, an international team involving the National Physical Laboratory (NPL) has measured the reflectance of rough, snow-covered surfaces at large solar zenith angles. A crucial factor in climate models is Earth's albedo, which is the reflectance of Earth's surface: dark ground has a low albedo, reflecting little light, whereas ice and snow have a high ...

  • Weather SDM: estimating snow density with high precision using snow depth and local climate

    Snow density is an important measure in hydrology used to convert snow depth to the snow water equivalent (SWE). A model developed by Sturm, Tara and Liston predicts the snow density by using snow depth, the snow age and a snow class defined by the location. In this work this model is extended to include location and seasonal weather-specific variables. The model is named Weather Snow Density ...


    By IWA Publishing

  • Evaluating the snow component of a flood forecasting model

    The objective of this study is to evaluate the snow routine of a semi-distributed conceptual water balance model calibrated to streamflow data alone. The model is used for operational flood forecasting in 57 catchments in Austria and southern Germany with elevations ranging 200–3,800 m a.s.l. We compared snow water equivalents (SWE) simulated by the hydrologic model with snow covered ...


    By IWA Publishing

  • Ski resorts, web-bulb, and snow-making

    Weather stations can often be cost-prohibitive, even in applications where they may truly add value, such as for snow-making at ski resorts. Even if the initial purchase price can be justified, the engineering costs and complexity can require outsourced skills to install, program, and maintain the system. Getting useful data off of the weather station can also be a headache or unreliable. Dyacon ...


    By Dyacon, Inc.

  • Analysis and modelling of snow bulk density in the Tyrolean Alps

    An extensive collection of in-situ snow measurements is used to characterize snow conditions in the entire elevation range of the alpine area of Tyrol, Austria. Regularly observed snow station data are evaluated with respect to mean snow density–time curves of the period 1952–2010. Dependent on the observed snow depth (HS), the snow bulk density (ρ) is ...


    By IWA Publishing

  • Arctic snow distribution patterns at the watershed scale

    Watershed-scale hydrologic models require good estimates of spatially distributed snow water equivalent (SWE) at winter's end. Snow on the ground in arctic environments is susceptible to significant wind redistribution, which results in heterogeneous snowpacks. The scarcity and quality of data collected by snow gauges provides a poor indicator of actual snowpack distribution. Snow ...


    By IWA Publishing

  • 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 ...


    By Fluence Corporation

  • Scottish snow cover dependence on the North Atlantic Oscillation index

    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 ...


    By IWA Publishing

  • 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 ...

  • Evaluation of remotely sensed snow cover product in Central Asia

    Central Asian countries depend highly on water resources from snow and glacier melt, which has to be studied thoroughly to estimate water availability. However, the observation network in Central Asia is poor to carry out such studies in detail. Observations from space using remote sensing techniques might fill this observation gap, which needs to be validated. Therefore, this study evaluates ...


    By IWA Publishing

  • Measuring winter precipitation and snow on the ground in northern polar regions

    Measuring winter precipitation in cold and windy regions is recognized as a difficult task. Nonetheless, the accurate measurement of solid precipitation provides important input data for predicting snowmelt floods and avalanche danger and for monitoring climate change. The difficulties in measuring solid precipitation are associated with environmental factors and technological issues. ...


    By IWA Publishing

  • Comparison of digital and manual methods of snow particle size estimation

    Maintaining long time series of observations of the Cryosphere is a key issue in climate research. Long observational time series involve problems due to change in methodology or observers. In order to extend time series and introduce new methods, careful comparisons must be made to ensure homogeneity in the observational data. We have compared an established method for snow grain-size ...


    By IWA Publishing

  • In situ snow water equivalent observations in the US Arctic

    This paper summarizes 12 years of snow water equivalent (SWE) observations collected in the data-sparse region of Arctic Alaska, United States. The in situ observations are distributed across a 200 × 300 km domain that includes the Kuparuk River watershed from the Brooks Range to the Beaufort Sea coast. Data collection methods and analyses were classified to distinguish between snow ...


    By IWA Publishing

  • Use of auxiliary data of topography, snow and ice to improve model performance in a glacier-dominated catchment in Central Asia

    Whether coupling auxiliary information (except for conventional rainfall–runoff and temperature data) into hydrological models can improve model performance and transferability is still an open question. In this study, we chose a glacier catchment to test the effect of auxiliary information, i.e., distributed forcing input, topography, snow-ice accumulation and melting on model ...


    By IWA Publishing

  • Lufft snow height sensor SHM30 reveals secrets about Antarctica

    Neumayer III polar research station equipped with Lufft snow height sensor SHM30, photo: AWI Bremerhaven Neumayer Station III, short Neumayer III of the German Alfred Wegener Institute (AWI) is the biggest as well as most important research station of the central Antarctica. It was ...

  • Lufft snow height sensor SHM30 reveals secrets about Antarctica

    Neumayer Station III, short Neumayer III of the German Alfred Wegener Institute (AWI) is the biggest as well as most important research station of the central Antarctica. It was named after the geophysicist ...

  • How John Snow Changed the Way We Look at Water Supply Systems, Microorganisms, and Infectious Diseases with Data Mapping.

    Hearing the name ‘Jon Snow’ may bring Kit Harington’s face to the forefront of many people’s mind as an important character in ‘Game of Thrones’ but, for water treatment and public health professionals, there is another iconic ‘John Snow’ that may come to mind. Dr. John Snow, an English ...


    By LuminUltra Technologies Ltd.

  • ´More Stations. More Data. Better Forecasts.´ – the NYS Mesonet

    “More Stations. More Data. Better Forecasts.” – that’s the slogan of New York State Mesonet. The weather observation network consists of a total of 125 weather stations all over the state of New York and Lufft was selected as one of the vendors to support them in capturing the data. All 125 of the weathers stations have the standard instrumentation suite. Of those 125, 17 ...

  • Snow cover mapping using IRS-P6 AWiFS data and the relationships between some climatic factors with snowpack in the northwest of Iran

    In this study, we explored the potential of the multispectral and multi-temporal IRS Advanced Wide Field Sensor (AWiFS) data for mapping of the snow cover in the northwest regions of Iran. The AWiFS snow cover maps, based on the unsupervised classification method, were compared with the estimates of snow cover area derived from the moderate resolution imaging spectroradiometer (MODIS) images ...


    By IWA Publishing

  • Proportional coefficient method applied to TRMM rainfall data: case study of hydrological simulations of the Hotan River Basin (China)

    A low-density rain gauge network is always a major obstacle for hydrological modelling, particularly for alpine and remote regions. The availability of the Tropical Rainfall Measuring Mission (TRMM) rainfall products provides an opportunity for hydrological modelling, although the results must be validated and corrected before they can be used in further applications. In this paper, the ...


    By IWA Publishing

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