Which warm and dry local Foehn wind blows on the leeward side of the Rocky Mountains ?
Chinook
A Foehn-type wind forms when moist air is forced up the windward slope of a mountain, loses its moisture as rain or snow on the way up, and then descends the leeward slope. Descending air is compressed, so it warms rapidly and arrives dry and hot at the foot of the range.
On the leeward, eastern side of the Rocky Mountains this wind is called the Chinook. It is famous for melting snow so quickly on the prairies of Alberta and Montana that it is nicknamed the snow-eater, which helps expose winter pasture for livestock.
The other winds belong to different regions: the Harmattan is a dry dusty wind blowing off the Sahara over West Africa, the Sirocco is a hot wind carrying Saharan air towards southern Europe, and the Mistral is a cold northerly wind funnelled down the Rhone valley in France.
Hence, the answer is the Chinook.
Important Questions from World Economic and Human Geography
- Which one of the following cities was the first to attain the status of a 'megacity'?
In which one of the following countries is intensive subsistence agriculture not predominantly practiced?
'Yakuts' are the nomadic herders of
Match List I with List II and select the correct answer using the code given below the Lists:
List I
(Paper industry
centre)
List II
(State)
A.
Kamptee
1.
Karnataka
B.
Rajahmundry
2.
Maharashtra
C.
Shahdol
3.
Andhra Pradesh
D.
Belagola
4.
Madhya Pradesh
The concept of demographic transition provides a model for
