Current Question

Important Geophysical Phenomena & Geographical Features :

Equatorial Indian Ocean Oscillation

Recently, the Indian Institute of Sciences (IISc), Bengluru and National Centre for Ocean Information Services, Hyderabad jointly released a study paper about Equatorial Indian Ocean Oscillation (EQUINOO) and its effects over Indian Summer Monsoon. Consider the following statements regarding the EQUINOO.

  1. EQUINOO is as an oscillation or a seesaw between enhanced cloud formation and rainfall over the western equatorial Indian Ocean (WEIO) and suppressed clouding over the eastern equatorial Indian Ocean (EEIO) in west of Sumatra.
  2. A positive EQUINOO phase is when the surface sea temperature in WEIO is above 27.5 degree Celsius leading to enhanced clouding, which is then suppressed in the eastern equatorial Indian Ocean.

Choose the correct answer from the codes given below:


Cyclones

Consider the following statements with respect to Cyclones:

  1. A cyclone is an area of low pressure around which the winds flow counterclockwise in the northern hemisphere.
  2. It halts the onwards progression of Monsoon.

Which of the statements given above is/are correct?


Strawberry Moon

Which of the following conditions prevail, when Strawberry Moon is formed?

  1. The Full Moon appears ‘opposite’ the Sun.
  2. The Moon appears smaller than it is and will be visible through a shorter arc.
  3. The Moon cast a longer shadow on the Earth

Select the correct answer using the code given below:


Clouds

Consider the following statements with respect to the clouds:

  1. High level clouds primarily are composed of ice crystals, and often appear thin, streaky, and white.
  2. The two main types of mid-level clouds include stratus, which develop horizontally, and cumulus, which develop vertically.
  3. Altostratus and altocumulus are low level clouds.

Select the correct answer using the code given below:


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