Relevance: GS-1/GS-3 (Climate Change); 

Source: Nature Climate Change, WMO

A new Nature Climate Change study shows that global warming is increasing sharp day-to-day temperature fluctuations, especially in mid–low latitudes (South Asia, East Asia, Africa, South America). These swings pose rising risks to human health and agriculture.

Rising Global Climate Extremes

• Daily temperature variation has increased by 20–50 percent in many regions.
• Heatwaves are becoming longer and 4 times more frequent (World Meteorological Organization).
• Heavy rainfall events have increased by ~30 percent since the 1950s.

Causes, Concerns and Way Ahead

Q. Increasing day-to-day temperature variability is mainly linked to which of the following?

1. Jet-stream shifts
2. Rising greenhouse gases
3. Ocean surface warming

Select the correct answer:
A. 1 and 2 only,  B. 2 and 3 only, 

C. 1 and 3 only,  D. 1, 2 and 3