34 lines
2.2 KiB
ReStructuredText
34 lines
2.2 KiB
ReStructuredText
.. _spinning-up-sp:
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.. include:: ../substitutions.rst
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===========================================
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Spinning up the Satellite Phenology Model
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===========================================
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To spin-up the CLMSP model you merely need to run CLMSP for about 50 simulation years starting from arbitrary initial conditions.
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You then use the final restart file for initial conditions in other simulations.
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Because, this is a straight forward operation we will NOT give the details on how to do that here, but leave it as an exercise for the reader.
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See the `Example 4-7 <CLM-URL>`_ as an example of doing this as the last step for CLMCN.
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You can also start from a default initial file that is setup as part of the selected compset. :numref:`Figure SP spinup plot for 1850` shows
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spinup behavior for an 1850 SP case that loops over one year of coupler history output for atmospheric forcing (generated from the fully coupled model),
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initialized with an initial file generated from a GSWP3 atmospheric forcing case. Note that it takes less than 10 years for state variables
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such as FSH (sensible heat flux), EFLX_LH_TOT (latent heat flux), GPP (photosynthesis), H2OSOI (soil water), and TSOI (soil temperature) to reach
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a specified equilibrium state (denoted by the dotted lines) due to the different atmospheric forcing. TWS (total water storage) may take a bit longer.
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.. _Figure SP spinup plot for 1850:
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.. figure:: image1.png
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SP spinup plot for year 1850. Variables examined are FSH (sensible heat flux), EFLX_LH_TOT (latent heat flux), GPP (photosynthesis), TWS (total water storage), H2OSOI (volumetric soil water in layer 8) and TSOI (soil temperature in layer 10). Generated using .../tools/contrib/SpinupStability_SP.ncl.
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:numref:`Figure SP spinup plot for 2000 CO2` shows spinup behavior for the same case but also changes CO2 to present-day conditions (379ppmv).
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Again, it takes about 10 years to reach equilibrium.
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.. _Figure SP spinup plot for 2000 CO2:
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.. figure:: image2.png
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SP spinup plot for year 2000 CO2. Variables examined are FSH (sensible heat flux), EFLX_LH_TOT (latent heat flux), GPP (photosynthesis), TWS (total water storage), H2OSOI (volumetric soil water in layer 8) and TSOI (soil temperature in layer 10). Generated using .../tools/contrib/SpinupStability_SP.ncl.
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