. Elementary physical geography . upon the ground. It takes sometime for the suns rays to warm the ground and the air;and when this is done, the effect of solar energy becomesgreater than before, even though the days be shorter andthe amount of energy coming from the sUn less than in mid-summer. In the opposite season, the effect of radiationduring the long nights becomes most marked after themiddle of winter, which is really the 22d day of January is almost invariably colder than Decem-ber, and February also may be colder than December. For the sake of diagrammatic illustra
. Elementary physical geography . upon the ground. It takes sometime for the suns rays to warm the ground and the air;and when this is done, the effect of solar energy becomesgreater than before, even though the days be shorter andthe amount of energy coming from the sUn less than in mid-summer. In the opposite season, the effect of radiationduring the long nights becomes most marked after themiddle of winter, which is really the 22d day of January is almost invariably colder than Decem-ber, and February also may be colder than December. For the sake of diagrammatic illustration, the seasonal curveis represented as being a continual rise and fall of tempera-ture. It represents the average temperatures for the severalparts of the different months. In reality there is no suchregular and uniform rise, but it is interrupted by dailyrisings and fallings (the daily curve, pp. 60-62), and byirregular interruptions (Fig. 23). For days at a time thenormal seasonal rise or fall may be interrupted, and even be. Face page 50, Isothermal <
Size: 1493px × 1673px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthortarrralphsralphstockm, bookcentury1900, bookdecade1900
