--- MITgcm/pkg/ggl90/GGL90_OPTIONS.h	2004/09/16 11:27:18	1.1
+++ MITgcm/pkg/ggl90/GGL90_OPTIONS.h	2004/09/27 08:02:05	1.2
@@ -1,4 +1,4 @@
-C$Header: /home/ubuntu/mnt/e9_copy/MITgcm/pkg/ggl90/GGL90_OPTIONS.h,v 1.1 2004/09/16 11:27:18 mlosch Exp $
+C$Header: /home/ubuntu/mnt/e9_copy/MITgcm/pkg/ggl90/GGL90_OPTIONS.h,v 1.2 2004/09/27 08:02:05 mlosch Exp $
 C$Name:  $
 C     /=============================================================\
 C     | GGL90_OPTIONS.h                                             |
@@ -16,6 +16,11 @@
 
 #include "CPP_OPTIONS.h"
 
+C     Enable horizontal diffusion of TKE. The orignal OPA code does not use
+C     horizontal diffusion but uses some sort of horizontal averaging
+C     for viscosity and diffusivity.
+#define ALLOW_GGL90_HORIZDIFF
+
 #endif /* ALLOW_GGL90 */
 #endif /* GGL90_OPTIONS_H */