Why the LAI from clm5-BGC and MODIS differ so much

[xiaoxiaokuishu]

Hi, all,

I use the clm5.0 BGC mode to simulate LAI, when I compare it with MODIS LAI (MYD15A2H, multi-year mean),

I find large difference between them.... not sure if it is normal or abnormal...




Best
Ru

 

[oleson]

The results you get will depend on many things, in particular, the spatial resolution, the atmospheric forcing, parameter settings and model configuration, initial conditions, etc. You could compare these results to some diagnostics we've posted for 1deg CLM5 out of the box (along with other model versions) here:

Output & Diagnostics | Community Earth System Model

www.cesm.ucar.edu

You could look at ILAMB results for example:

Community Climate System Model (CCSM)

Results for CLM5 forced by GSWP3 are here:

https://webext.cgd.ucar.edu/I20TR/_build_set1F/index.html

For example, CLM5 leaf area index compared to MODIS is here:

https://webext.cgd.ucar.edu/I20TR/_build_set1F/EcosystemandCarbonCycle/LeafAreaIndex/MODIS/MODIS.html

 

[xiaoxiaokuishu]

The results you get will depend on many things, in particular, the spatial resolution, the atmospheric forcing, parameter settings and model configuration, initial conditions, etc. You could compare these results to some diagnostics we've posted for 1deg CLM5 out of the box (along with other model versions) here:

Output & Diagnostics | Community Earth System Model

www.cesm.ucar.edu

You could look at ILAMB results for example:

Community Climate System Model (CCSM)

Results for CLM5 forced by GSWP3 are here:

https://webext.cgd.ucar.edu/I20TR/_build_set1F/index.html

For example, CLM5 leaf area index compared to MODIS is here:

https://webext.cgd.ucar.edu/I20TR/_build_set1F/EcosystemandCarbonCycle/LeafAreaIndex/MODIS/MODIS.html

Hi, Oleson,

Thanks for sharing the page, it is very helpful!!!!

Best
Ru