why GPP/LAI is zero, when change the surface from forest to CFT, e.g. oil palm

[xiaoxiaokuishu]

Hi, all,

I run a single-point simulation with Clm5-- with bgc-crop on, it workes well.
Here, the point property is forest, it means the item 4 in PCT_NAT_PFT is 100, it give the correct GPP and LAI

But when I change the surf data from forest to crop-oil palm by setting
PCT_NATVEG=0
PCT_CROP=100 and the item 53 (for all pfts) =100

It did not work well. The GPP/LAI is zero, but other biophysical variable,such as sensible heat, latent heat, TSA give the correct result.
Do you have any idea of why it happens.
Best
Ru

 

[slevis]

@xiaoxiaokuishu in your troubleshooting, consider the following questions:

1) Did you run longer than 1 year? I think that crops start growing in the second year because they need certain variables that get calculated in the course of the first year.
2) Does your version of the model have an explicit oil palm parameterization? If so, did you update mergetoclmpft(53) = 53 in your simulation's paramfile?
3) If you do not have an oil palm parameterization, then you could try setting mergetoclmpft(53) to 17 (temperate corn) or 75 (tropical corn) in your paramfile. This way the model would treat #53 as temperate or tropical corn, which I would expect to work.

The same topic is being discussed here: Adding crop column in CLM

 

[xiaoxiaokuishu]

@xiaoxiaokuishu in your troubleshooting, consider the following questions:

1) Did you run longer than 1 year? I think that crops start growing in the second year because they need certain variables that get calculated in the course of the first year.
2) Does your version of the model have an explicit oil palm parameterization? If so, did you update mergetoclmpft(53) = 53 in your simulation's paramfile?
3) If you do not have an oil palm parameterization, then you could try setting mergetoclmpft(53) to 17 (temperate corn) or 75 (tropical corn) in your paramfile. This way the model would treat #53 as temperate or tropical corn, which I would expect to work.

The same topic is being discussed here: Adding crop column in CLM

Hi, Slevis,

Thanks for list all the possibilities. I will try to debug that.

Best
Ru