. Europe and other continents . nd the heat grows ground. Briefly, — when air descends, it becomes denser andgrows warmer ; then the sky is clear and the weather dry. Rain Belts. — The belt of calms is the most rainy beltof the earth (see Figs. 26, 27, and 28), because itshot, moisture-laden air is rising and cooling. After aclear night in that region, the sun usually rises in a cloud-less skymore intense,the damp airrises more rap-idly ; then smallclouds appearand grow stead-ily until rainfalls from occurpr acticallyevery day, in-creasing in the sunsets and the
. Europe and other continents . nd the heat grows ground. Briefly, — when air descends, it becomes denser andgrows warmer ; then the sky is clear and the weather dry. Rain Belts. — The belt of calms is the most rainy beltof the earth (see Figs. 26, 27, and 28), because itshot, moisture-laden air is rising and cooling. After aclear night in that region, the sun usually rises in a cloud-less skymore intense,the damp airrises more rap-idly ; then smallclouds appearand grow stead-ily until rainfalls from occurpr acticallyevery day, in-creasing in the sunsets and the airrises less active-ly, the cloudsmelt away, the stars appear, and the night is as clear as before. Our hot,muggy summer days, with heavy thunder showers in theafternoon and evening, illustrate the Aveather that is re-peated day after day in this belt of calms. Since the trade winds blow from cooler to warmer re-gions, and are therefore steadily growing warmer, theirair tends to take up moisture rather than to drop it. The. Fig. 28. Showing the heavy rainfall on the east-facing coast ofAustralia where the trade winds hlow. Notice alsothe arid interior and west coast. What is the condi-tion in the helt of calms ? What resemblance do yousee to Figure 30 ? 32 GENERAL GEOGRAPHY
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