A) Rossby waves - Jet stream
B) El Nino - Strong monsoon
C) Index cycle - Walker circulation
D) Hadley cell - Mid-latitude cell
Correct Answer: A
Solution :
Jet streams arc fast flowing, narrow, meandering air currents found in the atmosphere of some planets, including Earth. On Earth, the main jet streams arc located near the altitude of the tropopause and arc westerly winds ((lowing west to east). Their paths typically have a meandering shape. Jet streams may start, stop, split into two or more parts, combine into one stream, or flow in various directions including opposite to the direction of the remainder of the jet. The strongest jet streams are the polar jets, at 9-12 km (30,000-39,000 ft) above sea level, and the higher altitude and somewhat weaker subtropical jets at 10-16 km (33,000-52,000 ft).
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