Hi everyone,
I’m trying to run CESM2.1.5 with the following component set:
Then I saved the last restart file from this run and use it as the “finidat” file for another spinup run in normal mode, with same component set and atmospheric forcing files. The outputs are as follows:
In the second spinup, I see a pronounced ~10-year oscillation in the time series—something that did not appear during the accelerated run. I’m wondering whether this is an artifact of my atmospheric forcing, or if I’ve made an error in the spinup procedure.
The guide mentions that the second spinup should run for 400+ years. Should I therefore extend this second run to 400 years or more to damp out these oscillations? Any advice or suggestions would be greatly appreciated. Thank you!
Best regards,
Zhu Zhu
I’m trying to run CESM2.1.5 with the following component set:
However, there is no default land initial file for this configuration. To generate one, I first ran the land model using the I2000Clm50BgcDvCrop component set, driven by a 10-year atmospheric forcing from fully coupled run. Following the user guide’s instructions for accelerated spinup (1.5.5. Spinup of CLM5.0-BGC-Crop — ctsm release-clm5.0 documentation), I turned on the accelerated spinup mode. I ran it for 300 years and it got equilibrium:
Then I saved the last restart file from this run and use it as the “finidat” file for another spinup run in normal mode, with same component set and atmospheric forcing files. The outputs are as follows:
In the second spinup, I see a pronounced ~10-year oscillation in the time series—something that did not appear during the accelerated run. I’m wondering whether this is an artifact of my atmospheric forcing, or if I’ve made an error in the spinup procedure.
The guide mentions that the second spinup should run for 400+ years. Should I therefore extend this second run to 400 years or more to damp out these oscillations? Any advice or suggestions would be greatly appreciated. Thank you!
Best regards,
Zhu Zhu