View source for Coupling GEOS-Chem with BCC CSM

== Overview ==

'''Lead Developers:'''
*[http://www.phy.pku.edu.cn/~acaq/group.html Lin Zhang] (PKU)
*[https://scholar.harvard.edu/xiaolu/home Xiao Lu] (PKU)

'''Presentation given at GCA1 (May 2018):'''
:[http://acmg.seas.harvard.edu/presentations/GCA1/Oral/Wednesday_AM/GCA1-XiaoLu_201805.pdf Development of the China National Climate Center Climate-Chemistry Model (BCC-CSM-GEOS-Chem): model development and evaluation for atmospheric chemistry component] (Xiao Lu, PKU)

'''''Xiao Lu wrote:'''''

:We are coupling the whole GEOS-Chem with BCC-ACGM. So we also use the GCHP interface (e.g. gigc_chunk_mod.F90, although may be an older version), and transfer the State_Met and State_Chm objective between BCC and GC. The difference regards to CESM-GC or WRF-GC as I read from Seb’s and May’s slides is that we turn off HEMCO at this stage and process emissions directly in the model. BCC-GC coupling also does not use MAPL or ESMF as BCC is not build on ESMF.

:I guess the GC code will add many tags as <tt>defined (CESM)</tt> or <tt>defined (WRF)</tt> in the modules. If so, I suggest a tag of <tt>defined (BCCCSM)</tt> be added together. As all couplings are similar in many ways but (I guess) BCC-GC is more model-specific and requires additional coding, e.g. on emissions and eliminating ESMF dependency, I think this is a good way at this stage, and I will reconcile my changes based on these updates in the near future. This can be further discussed.

== Validation ==

TBD

== Known issues ==

TBD