Boreal Summer Intra-Seasonal Oscillation (BSISO)

Boreal Summer Intra-Seasonal Oscillation (BSISO).

Why in news?

• Researchers at the Indian National Centre for Ocean Information Services (INCOIS), Hyderabad have reportedly found a way to improve wave forecasts using the Boreal Summer Intra-Seasonal Oscillation (BSISO).

About BSISO:

• Boreal Summer Intra-Seasonal Oscillation (BSISO) is a climactic phenomenon.
• It is the movement of convection (heat) from the Indian Ocean to the western Pacific in roughly every 10–50 days of the monsoon season from June to September.
• BSISOs represent monsoon’s ‘active’ and ‘break’ periods, in which weeks of heavy rainfall give way to brilliant sunshine before starting all over again.
• The active phase also enhances monsoon winds and hence the surface waves.
• The new research that waves induced by active phases of BSISO are nearly 0.5 meters higher than those which occur during other phases of BSISO.

PRELIMS QUESTION

Boreal Summer Intra-Seasonal Oscillation (BSISO) is a climatic phenomenon closely associated with:
(a)Forest Fires
(b)Arctic glacier formation
(c)Temperate Cyclones
(d)Indian monsoons

Answer to prelims question