Model:Alpine3D: Difference between revisions
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|Model type=Modular | |Model type=Modular | ||
|Categories=Terrestrial | |Categories=Terrestrial | ||
|One-line model description=3D model of alpine surface processes | |One-line model description=3D model of alpine surface processes | ||
|Extended model description=Alpine3D is a model for high resolution simulation of alpine surface processes, in particular snow processes. The model can be driven by measurements from automatic weather stations or by meteoro-logical model outputs. The core three-dimensional Alpine3D modules consist of a radiation balance model (which uses a view factor approach and includes shortwave scattering and longwave emission from terrain and tall vegetation) and a drifting snow model solving a diffusion equation for suspended snow and a saltation transport equation. The processes in the atmosphere are thus treated in three dimensions and coupled to a distributed one dimensional model of vegetation, snow and soil model (Snowpack) using the assumption that lateral exchange is small in these media. The model is completed by a conceptual runoff module. The model modules can be run in a parallel mode, using the POP-C++ toolkit, using a grid infrastructure to allow computationally demanding tasks. | |Extended model description=Alpine3D is a model for high resolution simulation of alpine surface processes, in particular snow processes. The model can be driven by measurements from automatic weather stations or by meteoro-logical model outputs. The core three-dimensional Alpine3D modules consist of a radiation balance model (which uses a view factor approach and includes shortwave scattering and longwave emission from terrain and tall vegetation) and a drifting snow model solving a diffusion equation for suspended snow and a saltation transport equation. The processes in the atmosphere are thus treated in three dimensions and coupled to a distributed one dimensional model of vegetation, snow and soil model (Snowpack) using the assumption that lateral exchange is small in these media. The model is completed by a conceptual runoff module. The model modules can be run in a parallel mode, using the POP-C++ toolkit, using a grid infrastructure to allow computationally demanding tasks. | ||
Alpine3D is a valuable tool to investigate surface dynamics in mountains and is currently used to investigate snow cover dynamics for avalanche warning and permafrost development and vegetation changes under climate change scenarios. It could also be used to create accurate soil moisture assessments for meteorological and flood forecasting. | Alpine3D is a valuable tool to investigate surface dynamics in mountains and is currently used to investigate snow cover dynamics for avalanche warning and permafrost development and vegetation changes under climate change scenarios. It could also be used to create accurate soil moisture assessments for meteorological and flood forecasting. | ||
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{{Model technical information | {{Model technical information | ||
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|Does model development still take place?=Yes | |Does model development still take place?=Yes | ||
|Model availability=As code | |Model availability=As code | ||
|Program license type=GPL v3 | |Program license type=GPL v3 | ||
|Memory requirements=several Gbits (depends on the surface that is simulated) | |Memory requirements=several Gbits (depends on the surface that is simulated) | ||
|Typical run time=hours to days | |Typical run time=hours to days | ||
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{{Input - Output description | {{Input - Output description | ||
|Describe input parameters=The area to be simulated has to be described (DEM, landuse). The meteorological input data (air temperature, relative humidity, precipitations...) have to be described (units, interpolations types). Some parameters about the model itself must be given (precision of the radiation ray tracing algorithms, characteristic lengths, parameters for a bucket model of runoff...) | |Describe input parameters=The area to be simulated has to be described (DEM, landuse). The meteorological input data (air temperature, relative humidity, precipitations...) have to be described (units, interpolations types). Some parameters about the model itself must be given (precision of the radiation ray tracing algorithms, characteristic lengths, parameters for a bucket model of runoff...) | ||
|Input format=ASCII | |Input format=ASCII | ||
|Describe output parameters=for every grid cell: air and surface temperature, relative humidity, short and long wave radiation, snow height, snow water content, albedo | |Describe output parameters=for every grid cell: air and surface temperature, relative humidity, short and long wave radiation, snow height, snow water content, albedo | ||
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Global outputs: catchment discharge, surface and subsurface flow | Global outputs: catchment discharge, surface and subsurface flow | ||
At user defined locations: full snow profiles (temperature profile, grain types, grain sizes, density, water content, liquid water content) | At user defined locations: full snow profiles (temperature profile, grain types, grain sizes, density, water content, liquid water content) | ||
|Output format=ASCII | |Output format=ASCII | ||
|Pre-processing software needed?=No | |Pre-processing software needed?=No | ||
|Post-processing software needed?=No | |Post-processing software needed?=No | ||
|Visualization software needed?=Yes | |Visualization software needed?=Yes | ||
|Other visualization software=any software able to visualize data in a 2D grid | |Other visualization software=any software able to visualize data in a 2D grid | ||
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{{Process description model | {{Process description model | ||
|Describe processes represented by the model=Alpine3D is a model for high resolution simulation of alpine surface processes, in particular snow processes. The model can be driven by measurements from automatic weather stations or by meteoro-logical model outputs. The core three-dimensional Alpine3D modules consist of a radiation balance model (which uses a view factor approach and includes shortwave scattering and longwave emission from terrain and tall vegetation) and a drifting snow model solving a diffusion equation for suspended snow and a saltation transport equation. The processes in the atmosphere are thus treated in three dimensions and coupled to a distributed one dimensional model of vegetation, snow and soil model (Snowpack) using the assumption that lateral exchange is small in these media. The model is completed by a conceptual runoff module. | |Describe processes represented by the model=Alpine3D is a model for high resolution simulation of alpine surface processes, in particular snow processes. The model can be driven by measurements from automatic weather stations or by meteoro-logical model outputs. The core three-dimensional Alpine3D modules consist of a radiation balance model (which uses a view factor approach and includes shortwave scattering and longwave emission from terrain and tall vegetation) and a drifting snow model solving a diffusion equation for suspended snow and a saltation transport equation. The processes in the atmosphere are thus treated in three dimensions and coupled to a distributed one dimensional model of vegetation, snow and soil model (Snowpack) using the assumption that lateral exchange is small in these media. The model is completed by a conceptual runoff module. | ||
|Describe key physical parameters and equations=Snow settling, temperature diffusion, snow saltation and suspension, snow metamorphism, terrain radiation. | |Describe key physical parameters and equations=Snow settling, temperature diffusion, snow saltation and suspension, snow metamorphism, terrain radiation. | ||
|Describe length scale and resolution constraints=The model has been used with cells from 5 meters up to kilometers scale. | |Describe length scale and resolution constraints=The model has been used with cells from 5 meters up to kilometers scale. | ||
|Describe time scale and resolution constraints=The time scale constraints usually comes from the input meteorological data: each time step must be provided with a set of input data. | |Describe time scale and resolution constraints=The time scale constraints usually comes from the input meteorological data: each time step must be provided with a set of input data. | ||
|Describe any numerical limitations and issues=Overall, the model is very computationally intensive. It is usually ran on a grid or a cluster. | |Describe any numerical limitations and issues=Overall, the model is very computationally intensive. It is usually ran on a grid or a cluster. | ||
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{{Model testing | {{Model testing | ||
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{{Users groups model | {{Users groups model | ||
|Do you have current or future plans for collaborating with other researchers?=The underlying 1D model (SNOWPACK) is already being used by various collaborating researchers/institutions. | |Do you have current or future plans for collaborating with other researchers?=The underlying 1D model (SNOWPACK) is already being used by various collaborating researchers/institutions. | ||
}} | }} | ||
{{Documentation model | {{Documentation model | ||
|Provide key papers on model if any="ALPINE3D: a detailed model of mountain surface processes and its application to snow hydrology", Michael Lehning, Ingo Völksch, David Gustafsson, Tuan Anh Nguyen, Manfred Stähli, Massimiliano Zappa, Hydrological Processes, Volume 20 Issue 10, Pages 2111 - 2128, 8 Jun 2006 | |Provide key papers on model if any="ALPINE3D: a detailed model of mountain surface processes and its application to snow hydrology", Michael Lehning, Ingo Völksch, David Gustafsson, Tuan Anh Nguyen, Manfred Stähli, Massimiliano Zappa, Hydrological Processes, Volume 20 Issue 10, Pages 2111 - 2128, 8 Jun 2006 | ||
|Manual model available=Yes | |Manual model available=Yes | ||
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|CCA component=No but possible | |CCA component=No but possible | ||
|IRF interface=No but possible | |IRF interface=No but possible | ||
|CMT component=Not yet | |||
}} | }} | ||
{{End headertab}} | {{End headertab}} | ||
Revision as of 15:28, 21 June 2011
