The occurrence of sunspot varies in a/an ______________ cycle.
A. 9-year
B. 10-year
C. 11-year
D. annual
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The standard period of “climate” is .
A. 3-7 days
B. one year
C. two years
D. 30 years
_______________________ is/are climate variation(s) in decadal/multi-decadal time scales.
A. ENSO
B. MJO
C. NAM
D. PDO
E. AMO
F. IOD
G. QBO
H. NAO
The most likely weather at subtropical latitudes (high pressure at lower level) are _______.
A. clear
B. dry
C. windy
D. cloudy
E. mild
A coastal flood or tsunami-like phenomenon of rising water commonly associated with low pressure weather systems (such as tropical cyclones and strong extratropical cyclones) is called a___________________________.