Model:GIPL: Difference between revisions
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Freezing/Thawing day | Freezing/Thawing day | ||
|Output format=ASCII | |Output format=ASCII | ||
|Pre-processing software needed?= | |Other output format=netcdf, GIS | ||
|Post-processing software needed?= | |Pre-processing software needed?=Yes | ||
|Describe pre-processing software=For spatial case one can developed its own pre-processing in order to put the input dataset in the format readable for GIPL. | |||
|Post-processing software needed?=Yes | |||
|Describe post-processing software=To generate netcdf or GIS outputs one can write its own converter for that. | |||
|Visualization software needed?=Yes | |Visualization software needed?=Yes | ||
|If above answer is yes=ESRI, Matlab | |If above answer is yes=ESRI, Matlab | ||
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}} | }} | ||
{{Process description model | {{Process description model | ||
|Describe processes represented by the model=Main purpose of the model is to calculate subsurface temperature profile, active layer depth and freeze-up day. | |Describe processes represented by the model=Main purpose of the model is to calculate subsurface temperature profile, active layer depth and freeze-up day. | ||
|Describe key physical parameters and equations=Thermal capacities and conductivities prescribed for each subsurface layer, volumetric water content and unfrozen water coefficients. | |Describe key physical parameters and equations=Thermal capacities and conductivities prescribed for each subsurface layer, volumetric water content and unfrozen water coefficients. | ||
}} | }} | ||
{{Model testing}} | {{Model testing}} |
Revision as of 02:10, 25 April 2010
Contact
Name | Elchin Jafarov |
Type of contact | |
Institute / Organization | Univ. of Alaska Fairbanks |
Postal address 1 | |
Postal address 2 | |
Town / City | Fairbanks |
Postal code | 99775 |
State | Alaska |
Country | US"US" is not in the list (Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina, Armenia, Australia, Austria, ...) of allowed values for the "Country" property. |
Email address | eejafarov@alaska.edu |
Phone | |
Fax |
GIPL
Metadata
Summary
Technical specs
In/Output
Process
Testing
Other
IntroductionGIPL(Geophysical Institute Permafrost Laboratory) is an implicit finite difference one-dimensional heat flow numerical model. The model was developed by V.Romanovsky and G. Tipenko at University of Alaska Fairbanks. The model uses coarse vertical resolution grid which preserves the latent-heat effects in the phase transition zone, even under conditions of rapid or abrupt changes in the temperature fields. The air temperature is a driving force for the GIPL upper boundary condition and constant geothermal heat flux at the lower boundary (typically from 500 to 1000 m). The other inputs are precipitation, prescribed water content and thermal properties of the multilayered soil column. As an output the model produces temperature distributions at different depths, active layer thickness and calculates time of freeze up. HistoryPapersIssuesHelpInput FilesOutput FilesDownloadSource |