Note the dark “blemishes” in southeast Pennsylvania on the same daytime infrared

Question

Note the dark “blemishes” in southeast Pennsylvania on the same daytime infrared satellite image you used in Problem 8. What is the most likely cause of these dark spots?

A. urban heat islands

B. tops of mountains

C.

relatively shallow, warm lakes

D. areas with low albedo

E. tops of thunderstorms scattered across the region

A. urban heat islands

B. tops of mountains

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Explanation / Answer

the dark “blemishes” in southeast Pennsylvania on the same daytime. The most likely cause of these dark spots are urban heat islands. During the day, concrete, buildings, etc. absorb solar radiation, keeping towns and cities warmer than the surrounding countryside. Warm regions appear dark on conventional infrared imagery.

So answer is A

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