搜索结果: 1-15 共查到“理学 Snowpack”相关记录23条 . 查询时间(0.078 秒)
Researchers have developed a new computer model for calculating the water content of snowpacks, providing an important tool for water resource managers and avalanche forecasters as well as scientists....
Snowpack in California’s Sierra Nevada in 2015 was at the lowest level in the past 500 years, according to a new report led by University of Arizona researchers.
The team’s research is the first to s...
The detailed snowpack scheme Crocus and its implementation in SURFEX v7.2
snowpack scheme Crocus implementation SURFEX v7.2
2014/12/10
Detailed studies of snow cover processes require models that offer a fine description of the snow cover properties. The detailed snowpack model Crocus is such a scheme, and has been run operationally ...
The Correlation of Snowpack with Topography and Snowmelt Runoff on Marmot Creek Basin, Alberta
Snowpack Topography Snowmelt Runoff
2014/4/3
In a model reliating snow water
equivalent to 6 combinations of topo-
graphic and forest variables on
Marmot Creek experimental basin,
36 per cent of the variance was
accounted...
Feasibility of Characterizing Snowpack and the Freeze–Thaw State of Underlying Soil Using Multifrequency Active/Passive Microwave Data
Freeze Characterizing Snowpack Freeze–Thaw State
2013/9/2
Abstract—An ensemble-based data assimilation approach isdeveloped to characterize the snow water equivalent (SWE)and underlying soil freeze–thaw tate (including the soil surfacetemperature and both so...
Recent ground-based and space borne observations suggest the presence of significant amounts of iodine monoxide in the boundary layer of Antarctica, which are expected to have an impact on the ozone b...
Acetaldehyde is a reactive intermediate in hydrocarbon oxidation. It is both emitted and taken up by snowpacks and photochemical and physical processes are probably involved. Understanding the reactiv...
Simulation of the specific surface area of snow using a one-dimensional physical snowpack model:implementation and evaluation for subarctic snow in Alaska
specific surface area snow one-dimensional physical snowpack model subarctic snow Alaska
2010/2/3
The specific surface area (SSA) of the snow constitutes a powerful parameter to quantify the exchange of matter and energy between the snow and the atmosphere. However, currently no snow physics model...
The Utilization of Spaceborne Microwave Radiometers for Monitoring Snowpack Properties
Utilization Spaceborne Microwave Radiometers Snowpack Properties
2009/10/29
Snow accumulation and depletion at specific locations can be monitored from
space by observing related variations in microwave brightness temperatures.
Using vertically and horizontally polarized br...
Prior microwave measurements of snow water equivalent and liquid water
content and conceptualizations of emission and backscattering models are
reviewed. The results of an experiment designed to col...
Environmental Isotope Studies of an Alpine Snowpack
Environmental Isotope Studies Alpine Snowpack
2009/10/28
At the experimental plot of Weissfluhjoch in Switzerland, 2,540 m a d . ,
tritium, deuterium and oxygen-18 have been used to study exchange processes
during the build-up and ablation of the snow cov...
Snowpack Liquid Water Determinations Using Freezing Calorimetry
Snowpack Liquid Water Determinations Freezing Calorimetry
2009/10/28
Liquid water in a snowpack has been recognized for some time as a quantifiable
variable of hydrologic significance. It is also important in the interpretation
of snowpack microwave remote sensing da...
Passive and Active Microwave Studies of Wet Snowpack Properties
Passive Active Microwave Studies Wet Snowpack Properties
2009/10/27
Microwave signatures have been found to, be related to variations in snow
conditions found on the earth's surface. Most of these observations have been
obtained by passive microwave radiometry. In g...
Microwave Remote Sensing of Snowpack Properties:Potential and Limitations
Microwave Remote Sensing Snowpack Properties Potential Limitations
2009/10/27
This review explores from a user's viewpoint the possibilities and limitations of
microwave-based techniques for the remote sensing of snowpack properties.
Mapping of dry snowpacks and detection of ...
Mesoscale Variability of the Upper Colorado River Snowpack
Mesoscale Variability Upper Colorado River Snowpack
2009/10/23
In the Aountainousr egions of the Upper Colorado River Basin, snow course observations
give local measurements of snow water equivalent, which can be
used to estimate regional averages of snow condi...