Model:GIPL: Difference between revisions
No edit summary |
Watermann1 (talk | contribs) No edit summary |
||
Line 57: | Line 57: | ||
{{Model testing | {{Model testing | ||
|Describe available calibration data sets=We have tested the model for different permafrost observation sites for Alaska(USA) and Siberia(Russia). Typically, the model results show good correlation with measured data (if observations are accurate). | |Describe available calibration data sets=We have tested the model for different permafrost observation sites for Alaska(USA) and Siberia(Russia). Typically, the model results show good correlation with measured data (if observations are accurate). | ||
|Model calibration data=Sample.zip, | |Model calibration data=Sample.zip, | ||
}} | }} | ||
{{Users groups model}} | {{Users groups model}} | ||
{{Documentation model | {{Documentation model | ||
|Provide key papers on model if any=Romanovsky V.E.; Marchenko S. The GIPL Permafrost Dynamics Model. University of Alaska Fairbanks. | |||
|Manual model available=No | |Manual model available=No | ||
}} | }} |
Revision as of 11:14, 31 August 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 FilesThere are 6 input files. input.txt contains input parameters and input points. thermo.txt contains thermal and unfrozen water properties. grid.txt contains used for calculations grid. bound.txt includes upper boundary temperatures, which are usually air temperature. snow.txt and rsnow.txt contains snow depth and conductivity. Output FilesThe are two main output files. results.txt contains results which are depend on time step prescribed by user in input.txt file (usually timestep = 1 day). mean.txt contains results which are depend on mean time step, also assigned in input.txt DownloadSource |