Upper and Lower Level Fields for Jan & Feb 1993: ECMWF Compared with NCEP

Figure 2.7 a,b. a) The monthly averaged ECMWF 200 mb horizontal divergence (s-1) for January and February 1993; b) ECMWF minus the NCEP horizontal divergence (contoured, s-1) and the daily variation (root-mean-square,m/s) of u and v (shaded) for January to February 1993.

Figure 2.7 c,d. c) The monthly averaged ECMWF 850mb wind vector (m/s) for January and February 1993; d) ECMWF minus the NCEP wind vectors and the daily variation (root-mean-square) contours for January and February 1993.