About the Settings for Reading Atmospheric CO₂ Concentration and ch4 Concentration

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lucia

luyaohuang
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Hello everyone, I have a question I'd like to ask. I am currently running the CLM model to simulate regional methane fluxes. However, the atmospheric methane concentration is currently set as a fixed parameter. I would like to input dynamic atmospheric methane concentrations, similar to how CO₂ and nitrogen deposition are handled. So, I created a stream file for methane, following the same approach as CO₂. In all the source code sections that involve CO₂, I added similar settings for methane. In the generated log file, I can see that the methane file was successfully opened. However, when I printed out the methane concentration after reading it, the output value was zero. I realized that the methane data might not have actually been read. I'm not sure where the issue lies. I have tried multiple times to locate the error but haven't been able to find it. I would really like to understand why this is happening. If anyone could share the relevant settings for CO₂ or nitrogen deposition, I would greatly appreciate ！
 

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oleson

Keith Oleson
CSEG and Liaisons
Staff member
Your approach of following the example of CO2 seems logical. Unfortunately, I can't think of anything specific that would fix your problem, others are welcome to chime in of course.
 
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lucia

luyaohuang
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Thank you very much for your reply, Keith. I previously didn't set the corresponding methane variables correctly in avofld and avifld, but now I have successfully resolved the issue.
 
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