نتایج جستجو برای: snowmelt
تعداد نتایج: 1720 فیلتر نتایج به سال:
Logistical constraints have caused data collection in seasonally-snow covered areas to generally be on a campaign basis with limited instrumentation. The problems of winter access, cold air temperatures, and blowing snow cause both equipment malfunctions and problems with consistent and timely maintenance. At the Long-Term Ecological Research (LTER) network site in an alpine area of Colorado, w...
KUČEROVÁ, D., JENÍČEK, M. (2014): Comparison of selected methods used for the calculation of the snowpack spatial distribution, Bystřice River basin, Czechia. Geografie, 119, No. 3, pp. 199–217. – The knowledge of the water volume stored in the snowpack, including its spatial distribution, is vital for many hydrological applications. Such information is useful for hydrological forecasts and it ...
Pesticides stored at or close to the soil surface after field application can be mobilized and transported off the field when surface runoff occurs. The objective of our study was to quantify the potential pesticide losses in surface runoff from a conventionally managed agricultural field in a Swedish climate. This was achieved by measuring surface runoff volumes and concentrations in runoff of...
Climate change effects on snow cover and thermic regime in alpine tundra might lead to a longer growing season, but could also increase risks to plants from spring frost events. Alpine snowbeds, i.e. alpine tundra from late snowmelt sites, might be particularly susceptible to such climatic changes. Snowbed communities were grown in large monoliths for two consecutive years, under different mani...
Over half of California’s water supply comes from high elevations in the snowmelt-dominated Sierra Nevada. Natural climate fluctuations, global warming, and the growing needs of water consumers demand intelligent management of this water resource. This requires a comprehensive monitoring system across and within the Sierra Nevada. Unfortunately, because of severe terrain and limited access, few...
Real time forecasts of the snowmelt runoff up to six days in advance were carried out for basins in the Alps of the Zillertal, Austria, which are part of a network of reservoirs for hydropower generation. The forecasts are based on the Snowmelt Runoff Model (SRM). Input data to SRM are taken from online measurements of hydro-meteorological parameters, from numerical weather forecast models, and...
Boreal peatland covers large areas on the northern hemisphere and thus plays an important role especially as carbon storage. Results from a range of microwave sensors have already shown a large potential for hydrological applications. We tested the ScanSAR system ENVISAT ASAR Global Mode (1km) time series for wetland monitoring in boreal environments. With a simple threshold method homogeneous ...
[1] Biogeochemical cycling of N and S was examined at two watersheds in the Adirondack Mountains, New York, to better understand the retention and loss of these elements during winter and spring snowmelt. We analyzed stable isotope compositions of NO3 (dN-NO3 , dO-NO3 ) and SO4 2 (dS-SO4 2 , dO-SO4 2 ), along with concentrations and fluxes of NO3 and SO4 2 , in precipitation, throughfall, snowp...
Abstract Soil Water Index (SWI) represents the conceptual water stored in soil and is calculated using a three-layer tank model with hourly precipitation. In Japan, landslide disasters are likely to occur when SWI an event exceeds maximum value of past 10 years; however, snowmelt-driven have not been considered yet. Using that simultaneously calculates runoff, we implemented snowfall-accumulati...
This paper presents results of spatial and temporal analyses of hydro-climatic regimes and simulation of climate-induced hydrologic changes in the Lake Winnipeg watershed. The hydrologic and agricultural chemical yield model, Soil & Water Assessment Tool (SWAT), was employed for the simulation of hydrologic scenarios in the Upper Assiniboine catchment of the Lake Winnipeg watershed, Canada. Ana...
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