· Orographic and non-orographic gravity wave parameterizations
Here I have attached a modified, momentum conserving orographic and non-orographic gravity wave parameterization which can be used in the dynamical core of GFDL’s AGCM. You can look for the changes we made by searching for ‘nyc213’. These subroutines and especially the non-orographic one can be used to replace the sponge layer, that is acting at the top layer of the model. For more details look at: N. Cohen, E.P.Gerber and O. Bühler, 2013: Compensation between resolved and unresolved wave driving in the Stratosphere: Implications for downward control, JAS.