Nitrogen deposition from CAM

[shirleyxyliu@gmail_com]

Dear all,Has anyone dealt with Nitrogen (NHx, NOy) deposition from CAM?CAM has four output variables respectively represent wet and dry deposition for NHx and NOy, and I summed them up, finding that the total amount of N deposition is just ~70 Tg N per year. But N deposition for CLM to read in is the magnitude of ~100 Tg N per year. BTW, the component set I'm using is FMOZ (with active CLM and CAM but inactive ocean). My question is where N deposition from CAM includes deposition onto the ocean?  If so, the maybe the missing ~30 Tg N per year is deposited onto the ocean!? (From the attached pic you can see there are around 30 Tg N deposited onto the ocean)Any ideas?Thanks in advance! Best,Shirley

 

[lamar]

Hi Shirleydepending on the method used (Neu or MOZART) wetdep can be either positive or negative.Are all your terms in the N-budget positive?  We also found recently that there is a missing sink associated with the chemistry and that could also be the reason for the imbalance.

 

[lamar]

Hi Shirleydepending on the method used (Neu or MOZART) wetdep can be either positive or negative.Are all your terms in the N-budget positive?  We also found recently that there is a missing sink associated with the chemistry and that could also be the reason for the imbalance.

 

[lamar]

Hi Shirleydepending on the method used (Neu or MOZART) wetdep can be either positive or negative.Are all your terms in the N-budget positive?  We also found recently that there is a missing sink associated with the chemistry and that could also be the reason for the imbalance.

 

[shirleyxyliu@gmail_com]

Hi LamarThanks for your reply.MOZART is the chemistry I'm using and deposition (NHx, NOy) and N species concentration (NH3, NOx etc.) are all positive. May I ask what exactly is the missing sink you mentioned?Best,Shirley 

 

[shirleyxyliu@gmail_com]

Hi LamarThanks for your reply.MOZART is the chemistry I'm using and deposition (NHx, NOy) and N species concentration (NH3, NOx etc.) are all positive. May I ask what exactly is the missing sink you mentioned?Best,Shirley 

 

[shirleyxyliu@gmail_com]

Hi LamarThanks for your reply.MOZART is the chemistry I'm using and deposition (NHx, NOy) and N species concentration (NH3, NOx etc.) are all positive. May I ask what exactly is the missing sink you mentioned?Best,Shirley