2. The greatest positive values of E-P (more evaporation than precipitation) occ

Question

2. The greatest positive values of E-P (more evaporation than precipitation) occur in that part of the ocean where atmospheric circulation is dominated by ____ [sinking or rising?] air and ____ [low or high?] pressure (refer to the figure in your textbook showing the generalized atmospheric circulation). These massive semi-permanent weather systems are regions where rates of evaporation are relatively ___ [high or low?] and rates of precipitation are relatively ___ [high or low?].

a. sinking; low; low; high

b. sinking; high; high; low

c. rising; high; high; low

d. rising; low; low; high.

Explanation / Answer

Answer: b. Sinking; high: high; low

Sinking air can cause high-pressure regime over that part of the ocean. It will make evaporated air diverge out. Sinking air hinders evaporated air to reach could condensation level. Thus, precipitation becomes less than evaporation.

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