. Smithsonian miscellaneous collections. large amplitude of oscillation. 1890 1895 1900 1905 1910 100 -10 10 0-10 100 -10 10 0 -1010 0 -10 0 2 Y EA RS fl-l .- II .3 YE AR 5 .• ^h •_ ;? 7. 54 Y EA RS cA ..• ._ ?•. , ... .•? 5. 65 Y EA RS d^y^ •?? .• •._ ^--^6 3. 77 Y EA RS •• ? /•.>8 2. 83 Y EA RS t * Fig. 23.—Harmonic analysis of sun-spot period, 1890-1913. The meteorological data at more than a hundred stations in variousparts of the world were analyzed in the same manner. Figures24, 25, 26, and 27 show lines of equal departure of pressure for thevarious periods at the time o
. Smithsonian miscellaneous collections. large amplitude of oscillation. 1890 1895 1900 1905 1910 100 -10 10 0-10 100 -10 10 0 -1010 0 -10 0 2 Y EA RS fl-l .- II .3 YE AR 5 .• ^h •_ ;? 7. 54 Y EA RS cA ..• ._ ?•. , ... .•? 5. 65 Y EA RS d^y^ •?? .• •._ ^--^6 3. 77 Y EA RS •• ? /•.>8 2. 83 Y EA RS t * Fig. 23.—Harmonic analysis of sun-spot period, 1890-1913. The meteorological data at more than a hundred stations in variousparts of the world were analyzed in the same manner. Figures24, 25, 26, and 27 show lines of equal departure of pressure for thevarious periods at the time of maxima of the solar periods of thesame length. A chart showing the departures at the time of thesolar maxima of the year period is given in figure 17. 38 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 82 Certain common features stand out clearly in all these , in the equatorial belt, except possibly over parts of the PacificOcean, the pressure is lov^er than normal at the time of maximum. Fig. 24.— period in pressure = ^ of years. Departures at timeof maximum of solar period of same length. solar activity in each period. Second, in middle latitudes of theSouthern Hemisphere there is a tendency to a belt of pressure abovenormal which cannot be well outlined on account of insufficient
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Keywords: ., bookauthorsm, bookcentury1800, bookdecade1860, booksubjectscience
