THE  NCAR  CSM  OCEAN  MODEL


                                                                by


                                         The NCAR Oceanography Section



                                  National Center for Atmospheric Research,1

                                                       P.O. Box 3000

                                             Boulder, CO   80307   U.S.A.



Preface______



This technical note documents the ocean component of the NCAR Climate System Model.
The  ocean  code  has  been  developed  from  the  Modular  Ocean  Model  (version  1.1)  which
was developed and maintained at the NOAA Geophysical Fluid Dynamics Laboratory in
Princeton.  The person who did the most work to produce and maintain the original GFDL
Ocean  Model  over  a  long  time  was  the  late  Michael  Cox.   The  oceanographic  modeling
community  owes  him  a  large  debt  because  this  is  still  the  standard  community  ocean
model.  As a tribute to Mike Cox, and because the material is still relevant, the first four
sections of this technical note are a straight reproduction from the GFDL Technical Report
that Mike wrote in 1984.  The remaining sections document how the NCAR Oceanography
Section  members  have  developed  the  MOM  1.1  code,  and  how  it  is  forced,  in  order  to
produce the NCAR CSM Ocean Model.



_________________________________________
   1  The National Center for Atmospheric Research is sponsored by the National Science

Foundation.


                                       Table  of  Contents



                                                                                                         Pages



A.   Introduction   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .     A1-A2

B.   Continuous Equations of the Model   .   .   .   .   .   .   .   .   .   .   .   .   .  B1-B5

C.   Finite Difference Formulation     .   .   .   .   .   .   .   .   .   .   .   .   .   .     C1-C9

D.   Integral Constraints     .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .     D1-D5

E.   Equation of State     .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .  E1-E5

 F.  Parameterization of Mesoscale Eddies   .   .   .   .   .   .   .   .   .   .   .   .  F1-F6

G.   KPP Boundary Layer Mixing Scheme   .   .   .   .   .   .   .   .   .   .   .     G1-G6

H.   Numerical and Coupling Improvements    .   .   .   .   .   .   .   .   .   .   H1-H10

  I. Surface Forcing Fields      .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .    I1-I7

 J.  List of Preprocessor Options   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   J1-J4

K.   How to Run the Model    .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .     K1-K4

 L.  Default Parameter Values    .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .  L1-L2

M.   Model Output Conventions     .   .   .   .   .   .   .   .   .   .   .   .   .   .   .    M1-M7