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I'm trying a series of model runs starting with existing .pss and .css files using IED_INIT_MODE = 6. Of 5 runs, 3 of them went smoothly but two are moving extremely slowly taking many hours just to simulate one day. The slowest run has over 4000 cohorts according to the logfile, but only 7 cohorts are defined in the .css file. What could be going on here? .css:
.pss:
logfileED2INconfig.xml |
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Answered by
Aariq
Dec 12, 2022
Replies: 3 comments 5 replies
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Could it be related to trying to start a run in January with deciduous pfts? It's been a while since I've played around with that, but I think the initial routine immediately creates leaves, etc. which then immediately die in winter conditions and cause a real spiral of our trouble. If you have a June met file, maybe try that and see if you still have issues? (I always start my css/pss initialized runs in the summer for this reason.) |
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1 reply
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I just tried starting the run in June and getting the same 4109 cohorts unfortunately. |
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Do you use a config.xml file ( |
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3 replies
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Might be good that you actually upload your ED2IN file as well. |
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Thanks, I updated the question with the ED2IN and config.xml files. |
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I would suspect the allometric coefficients to be responsible for the issue. Could you try remove the b1bs and b2bs (small and large) from the config file, especially from PFT1? If that does not work, to find out what the cause is remove bits of the xml at the time and see if it resolves your issue until you find the culprit. To solve the broader issue, I guess you generated those simulations through PEcAn, so you will need to modify the default xml in the pecan.ed library . I can guide you for this step if you need. |
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I think maybe this was related to trying to grow an evergreen tropical tree at a temperate site. We are trying to use old pss and css files to start runs not from bare ground, but the ED2 PFTs have changed (we think) since those old runs. The sites that had problems had PFT 3 (tropical evergreen tree) growing in temperate climates. Changing those to PFT 8 (temperate evergreen hardwood) seems to have fixed things. |
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1 reply
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That's a good bet. FWIW, I always have to lower plant_min_temp for PFT 9 from its default to get it to survive even at mid-latitudes |
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Answer selected by
Aariq
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I think maybe this was related to trying to grow an evergreen tropical tree at a temperate site. We are trying to use old pss and css files to start runs not from bare ground, but the ED2 PFTs have changed (we think) since those old runs. The sites that had problems had PFT 3 (tropical evergreen tree) growing in temperate climates. Changing those to PFT 8 (temperate evergreen hardwood) seems to have fixed things.