Anticyclones - GS questions based on daily current affairs

1)   Currently the temperatures are rising in the coastal regions of India especially the eastern coast. The reason behind is stated to be

a. An anti-cyclone
b. A cyclone
c. Pollution and emissions at coastal areas
d. Pollution in the hinterlands
Answer  Explanation 

ANSWER: An anti-cyclone

Explanation:

  • Currently, there is an anti-cyclone (circulation of winds around a region of high atmospheric pressure) in the Bay of Bengal.
  • This is not allowing advection, which means the sea breeze that helps in cooling the temperatures is not (flowing towards the land) happening.
  • The combined effect is leading to heat wave conditions.
2)   Which of the following is/are true about anticyclones?

1) Anticyclones move in the clockwise direction the southern hemisphere.
2) They have a high pressure at the centre.

a. Only 1
b. Only 2
c. Both 1 and 2
d. Neither 1 nor 2
Answer  Explanation 

ANSWER: Only 2

Explanation:

  • An anticyclone (that is, opposite to a cyclone) is a weather phenomenon that is a large-scale circulation of winds around a central region of high atmospheric pressure.
  • It moves clockwise in the Northern Hemisphere, anti-clockwise in the Southern Hemisphere.
  • The strongest anticyclones occur over snow-covered portions of Asia and North America in the winter when clear, dry air masses cool from a loss of infrared radiation, while little sunlight is absorbed to offset that infrared cooling.

Related Content

▲