CESM1.2.z - The SE version of gravity_waves_sources in CESM 1.2 has a bug and workaround.

[aliceb]

Affected Releases: CESM1.2.zUPDATED:

• Fixed in CESM1.2.2

(bugzilla 1766) The SE version of gravity_waves_sources in CESM 1.2 has a frontogenesis function ~14x larger than it should be due to a unit conversion error. The main effect is to trigger frontal waves more often and in the tropics. This only affects WACCM-SE.This will be fixed for CESM 1.3 in the next CAM tag but a workaround patch for gravity_waves_sources is listed below.

@@ -39,7 +39,7 @@
     call initEdgeBuffer(edge3,3*nlev)
     allocate(deriv(0:Nthreads-1))

-    psurf_ref = hypi(plev+1)
+    psurf_ref = hypi(plev+1)/100._r8

   end subroutine gws_init