drag coefficient (Cd)

[wanghaoyu]

I would like to ask, what is the default drag coefficient (Cd) scheme in bulk_flux.F, which formula is it, thank you very much

[wilkin]

The effective drag coefficient for air-sea momentum exchange depends on many factors associated with marine boundary layers conditions. There is no "default value".

Read the papers listed in the opening lines of the subroutine.

Code: Select all

!    Fairall, C.W., E.F. Bradley, D.P. Rogers, J.B. Edson and G.S.     !
!      Young, 1996:  Bulk parameterization of air-sea fluxes for       !
!      tropical ocean-global atmosphere Coupled-Ocean Atmosphere       !
!      Response Experiment, JGR, 101, 3747-3764.                       !
!                                                                      !
!    Fairall, C.W., E.F. Bradley, J.S. Godfrey, G.A. Wick, J.B.        !
!      Edson, and G.S. Young, 1996:  Cool-skin and warm-layer          !
!      effects on sea surface temperature, JGR, 101, 1295-1308.        !
!                                                                      !
!    Liu, W.T., K.B. Katsaros, and J.A. Businger, 1979:  Bulk          !
!        parameterization of the air-sea exchange of heat and          !
!        water vapor including the molecular constraints at            !
!        the interface, J. Atmos. Sci, 36, 1722-1735.                  !