CMIP1, CMIP2 and CDAS Comparisons. Vernon E. Kousky December 2007. CMIP1-CDAS Circulation and Temperature Differences. Average 200-hPa wind and 850-hPa temperature were computed for JFM and JJA over the last 50 years of the CMIP1 free run.
Vernon E. Kousky
The upper-level ridge over the western US is too weak in CMIP1 and the westerlies are too strong over the hurricane development regions in the Gulf of Mexico, off the Southeast US coast and over the northwestern Caribbean.
The low-level flow is too strong from the NW over the region of the Gulf of California during summer, and the easterlies are too weak over the Caribbean.