search

ESCOMP / CAM

Community Atmosphere Model
77 stars 145 forks source link

Pass surface ozone concentrations to the coupler #381

Closed billsacks closed 2 years ago

billsacks commented 3 years ago

CTSM would like to be able to receive surface ozone concentrations from the atmosphere. There were some discussions involving @danicalombardozzi @mvertens and @fvitt in late 2016, and a plan was developed at the time, but CESM2 release priorities interfered and this never happened. We would like to restart these discussions.

My impression / recollection is that, when running with CAM-Chem, surface ozone concentrations are readily available. Things get trickier when running CAM without Chem; a note from a few years ago suggested that CAM may still have surface ozone concentrations in that case, but that they may just be monthly averages. I'm not sure what the best approach will be, but we'd like to have some discussions about this.

@danicalombardozzi and I would like to talk with the relevant people to (re)chart a path forward on this: @mvertens @fvitt and anyone else who should be included.

fvitt commented 3 years ago

When we run CAM without chemistry, ozone is prescribed for radiation transfer calculations. The prescribed ozone is typically monthly averaged and are time interpolated. It seems that we should be able to provide ozone concentrations in the bottom most layer whether the concentrations are prognosed by chemistry or prescribed.

AndrewJConley commented 3 years ago

I agree as well. This is not the only surface flux that needs to be calculated by, or passed to, the surface models. With the transition to NUOPC, it will be good to reevaluate where and how we do surface flux computations.

On Wed, May 26, 2021 at 10:22 AM fvitt @.***> wrote:

When we run CAM without chemistry, ozone is prescribed for radiation transfer calculations. The prescribed ozone is typically monthly averaged and are time interpolated. It seems that we should be able to provide ozone concentrations in the bottom most layer whether the concentrations are prognosed by chemistry or prescribed.

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub https://github.com/ESCOMP/CAM/issues/381#issuecomment-848913418, or unsubscribe https://github.com/notifications/unsubscribe-auth/ACB7OK7FCXZHSYMCVDLEQ2DTPUN4BANCNFSM45QWZDXA .

billsacks commented 3 years ago

Thanks @fvitt and @AndrewJConley . If we arrange a meeting to discuss this further, should the two of you be included? Anyone else?

AndrewJConley commented 3 years ago

Thanks for including me. I expect Francis can cover the technical aspects of the specific question of Ozone deposition to land for both prescribed and prognostic chemistries. I look forward to the discussion for informational purposes as we design the next phase of our deposition work for other chemicals and aerosols.

On Wed, May 26, 2021 at 11:47 AM Bill Sacks @.***> wrote:

Thanks @fvitt https://github.com/fvitt and @AndrewJConley https://github.com/AndrewJConley . If we arrange a meeting to discuss this further, should the two of you be included? Anyone else?

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/ESCOMP/CAM/issues/381#issuecomment-848989643, or unsubscribe https://github.com/notifications/unsubscribe-auth/ACB7OK7H3DZ4RRMXNBR4I3LTPUX3ZANCNFSM45QWZDXA .

gold2718 commented 2 years ago

Should have been closed by #404