Update "What's New in CTSM 5.3" #2789
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samsrabin
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| - Snow thermal conductivity is now Sturm_1997 | ||
| - New IC file for f09 1850 | ||
| - Snow thermal conductivity method is now `Sturm_1997` | ||
| - New initial conditions file for f09 ("1-degree") 1850, with more in progress |
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“with more in progress”—yes?
| - Surface datasets now provided for the `ne0np4.POLARCAP.ne30x4` grid. | ||
| - Surface datasets now have their version number embedded to prevent mismatch of surface dataset and CTSM version. | ||
| - Remove the `--hires_pft` option from `mksurfdata_esmf` as we don't have the datasets for it. | ||
| - Remove `VIC` fields from surface datasets. |
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What are (were) VIC fields?
| - Updates to BGC fire method | ||
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| Changes for all physics versions: | ||
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| - Parameter files updated | ||
| - FATES parameter file updated | ||
| - Glacier region 1 is now undefined |
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"Glacier region 1 is now undefined": What does this mean in terms of answer changes? Why should users care?
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| - With new surface datasets the following GLC fields have region "1" set to UNSET: | ||
| glacier_region_behavior, glacier_region_melt_behavior, glacier_region_ice_runoff_behavior | ||
| - With new surface datasets the following GLC fields have region "1" set to UNSET: glacier_region_behavior, glacier_region_melt_behavior, glacier_region_ice_runoff_behavior |
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"With new surface datasets the following GLC fields...": What does this mean in terms of answer changes? Why should users care?
| - Fix an important bug on soil fields that was there since `ctsm5.2.0`. This has the side effect of `mksurfdata_esmf` now giving identical answers with a change in number of processors, as it should. | ||
| - Surface datasets now provided for the `ne0np4.POLARCAP.ne30x4` grid. | ||
| - Surface datasets now have their version number embedded to prevent mismatch of surface dataset and CTSM version. | ||
| - Remove the `--hires_pft` option from `mksurfdata_esmf` as we don't have the datasets for it. |
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Is --hires_pft removal maybe not worth mentioning? If the datasets aren't available, was anyone using it? Moreover, this tool change doesn’t fit with the substantive changes to surface datasets described in the rest of the section.
| - Pass active glacier (CISM) runoff directly to river model (MOSART) | ||
| - Add the option for using matrix for Carbon/Nitrogen BGC spinup | ||
| - Add the option for using Matrix CN method for Carbon/Nitrogen BGC spinup |
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Since CN Matrix is an option, does it really fit in the “answer changes” section?
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| - With new surface datasets the following GLC fields have region "1" set to UNSET: | ||
| glacier_region_behavior, glacier_region_melt_behavior, glacier_region_ice_runoff_behavior | ||
| - With new surface datasets the following GLC fields have region "1" set to UNSET: glacier_region_behavior, glacier_region_melt_behavior, glacier_region_ice_runoff_behavior | ||
| - Updates to allow creating transient landuse timeseries files going back to 1700. |
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So mksurfdata_esmf can now make land-use timeseries files back to 1700. Have any of those actually been made?
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| New surface datasets: | ||
| ===================== | ||
| ## New surface datasets |
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Should this section title also mention land-use timeseries files?
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| Changes to CTSM Answers: | ||
| ======================== | ||
| ## Changes to CTSM answers |
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This section should mention new surface datasets and land-use timeseries files. Are those only used in clm6_0 physics or all physics versions?
Description of changes
It might be easier for further discussion to take place in a Google Doc for now... I've made one here.
Specific notes
Contributors other than yourself, if any: @ekluzek
CTSM Issues Fixed: None
Are answers expected to change (and if so in what way)? No
Any User Interface Changes (namelist or namelist defaults changes)? No
Does this create a need to change or add documentation? Did you do so? No
Testing performed, if any: None needed.
Remaining questions/tasks