lat: plotted from -9o to 90.00 lon: plotted from 0.00 to 357.50 lev: 50, 0000 t: an Monthly Longterm Mean (196B-1998)hgt NOAA-CIRES/CImata Dlognpoteg Center 2050 20500 61 M个N=203.3 NCEP GrADs image 50mb geopotential height Jan
50mb geopotential height Jan
lat: plotted from -90 to 9o0o lon: plotted from 0.00 to 357.50 lev:50.00a Monthly Longterm Mean (1968-1998)hgt. NOAA-CIRES/CImata Dlognpgtcg Centerl 30N 20850 Yn& 属 2D700 0400 FOE 120E 12M NCEP GrADs image 83 50mb geopotential height July
50mb geopotential height July
lat: plotted from o, to 90 lon: plotted from o0o to 360 ev:50.0o t: an Monthly Longterm Mean (1988-1996)hg NOAA-CIREs/ Clmate Dlagnastles Cante 240管 220合 220 19950 1940 13750 24D 1350 1930 MAX=20600 NCEP GrADS image
Jet Polar front Cold Warm
20 STRATOSPHERE Subtropical Tropopause 60 15 e Polar 50 front 10 Tropopause jet 309 20 10 H L H North 60 Polar Equator Pole front Latitude(°N)