clm5

Hi everyone, I am running a BHIST case on CESM 2.1.5 using surfdata and land use time series data that I generated myself using the ctsm52landusedatatool-main and mksurfdata_map tools. I have ensured that these two datasets have the same variables and dimensions as the official data. However...

I cannot understand why the annual total number of fires calculated using the NFIRE variable does not match the number of records where the burned area is greater than zero. Which one actually represents the real-world number of fires?

What version of the code are you using? CESM2.2 (CLM5, CAM6-chem/MOSAIC) Composet: FCnudged Have you made any changes to files in the source tree? ./xmlchange CLM_BLDNML_OPTS="-bgc bgc -crop" #turn on BGC and crop model user_nl_cam: Nudge_Model =.false. user_nl_clm: use_ozone = .true...

Hi I would like to do a global simulation using CLM5. At first, I was use I2000Clm50BgcCrop (2000_DATM%GSWP3v1_CLM50%BGC-CROP_SICE_SOCN_MOSART_CISM2%NOEVOLVE_SWAV) compset but the CO2 concentration is constant. I want to set a time-varying CO2 forcing. Which compset should I use or is there...

Hi, I am using CLM5.0 for a single-point simulation. I created the surface data and atmospheric forcing data myself. The PFT at this site is C3 grassland, but when I output the LAI, I found that the LAI was zero throughout the 1000-year spinup period. I also checked LEAFC and GPP, and their...

I am trying to analyze isoprene emissions (MEG_isoprene) from the CLM5 and MEGAN but have found conflicting information on what units this variable defaults to in the daily output from my model run. Can anyone provide insight into the units the emissions from MEGAN (e.g., 'MEG_<species>') are...

Hi, In a F2000Climo simulation, I set ‘use_soil_moisture_streams = .true. ’. The model automatically reads the monthly average H2OSOI file. I just wonder how the model processes the daily H2OSOI data, as I have observed that the daily H2OSOI values are not entirely consistent year-on-year. Any...

Hello everyone, I would like to ask how to replace the fire area simulated using Professor Li Fang's method in CLM with external fire data. I want to use GFA data to force-input into CLM instead of using the existing fire scheme to simulate fires.

What version of the code are you using? I am using CESM2.1.5 Have you made any changes to files in the source tree? I have not made any change yet Describe your problem or question: Dear CESM staff: I am working with the following component set...

Hi everyone, I plan to design a set of experiments using the B1850 compset in CESM2.1.3 to investigate the wildfire. My question is: do I need to make some necessary settings to activate the wildfire simulation? Looking forward to get any useful information. Best regards, KW

Hello, I have been trying to separate biophysical and biochemical effects using different components in CLM under the SSP126 scenario.My CESM version is 2.1.3 and CLM version is CLM5. I attempted to change the long name of BSSP126 in CESM from BGC to SP and link my own generated landtimeseries...

Hello, CESM team! Recently I started BSSP126 runs with my own landtimeseries data.I checked the sum of PCT_NAT_PFT is 100, also the sum of PCT_CFT. However, my simulations stopped in 2026 with the error message as below. My version is release-2.1.3, and the resolution is 0.9x1.25. I...

Hello everyone, my CESM version is 1.2.2. I want to modify SST boundry data to discover observational SST's(from 1979-2021) impact on atmospheric variability. To achieve this goal, i use FAMIPC5 compset to simulate the period of 1979-2021 and modify user_nl_cam to the same emission...

Hello everyone ,"Does anyone know what parameters in user_nl_clm can be adjusted to change the simulation of soil moisture and soil temperature?"

Hi,all, I am porting my model (CLM5 )from a gcc compiler platform to derecho, it works well with gcc compiler. but derecho seems only has default intel compiler, as I did not find any gcc tag in config_compiler.xml and config_machine.xml for derecho. Is there anyone can share how to use gcc...

Hi,everyone！ I have recently generated land use data for the years 2015–2100. My data format is similar to LUH2, but the land unit in my data represents the area (in square kilometers) of different land types within each grid cell. My land use data includes seven plant functional types (PFTs)...

Hi everyone, I am doing some studies about ozone-vegetation feedback. And the ozone can damage the vegetation's stomatal conductance. I have seen the source code in the `PhotosynthesisMod.F90` file. The ozone damage factor for stomatal conductance (`o3coefg`) only affects `rs_z` (resistance)...

Hi, I want to run a simulation for 1980-2020 using the compset FHIST, but the model stopped when it reached 2015. I checked the log file, and the error shown is: ERROR: GETEIL: FAILED to get Inputdata/atm/cam/strataero/ ozone_strataero_WACCM_L70_zm5day_18500101-20150103_CMIP6ensAvg_c180924.nc...

What version of the code are you using? CESM2.1.5 Have you made any changes to files in the source tree? Not yet Describe your problem or question: Dear community, I plan to run a set of nudging experiments based on compset FHIST_BGC in CESM2.1.5. However, instead of using the default...

I want to use a LAI with interannual variability (1980-2020) in the model. From previous posts, I roughly understand that lai_streams can be used to achieve this, but I still have some doubts that I hope you can help me clarify. The compset I am using is FHIST...