Which of the following sets pair s is are correctly matched Select the correct answer using the code...........

Which of the following sets pair(s) is/are correctly matched?

Select the correct answer using the code given below

Climatic phenomenon	Impact on Indian Monsoon
1. El-Nino	Weak monsoon causing droughts
2. Negative phase of Southern oscillation	Better than average rainfall
3. High pressure in western Arabian Sea with Somalian current	Heavy rainfall leading to floods

1 and 2 only

1 only

2 and 3 only

1, 2 and 3

Explanation:

Pair 1 is correctly matched. EI-Nino is a complex weather system that appears once every three to seven years, bringing drought, floods and other weather extremes to different parts of the world. The system involves oceanic and atmospheric phenomena with the appearance of warm currents off the coast of Peru in the Eastern Pacific and affects weather in many places including India. EI-Nino is merely an extension of the warm equatorial current which gets replaced temporarily by cold Peruvian current or Humboldt current (locate these currents in your atlas). This current increases the temperature of water on the Peruvian coast by 10°C. This results in a weak monsoon across Indian sub-continent.

Pair 2 is incorrectly matched. Southern Oscillations is a phenomenon of seesaw pattern of meteorological changes observed between pacific and Indian ocean. It is observed that whenever the surface pressure over Pacific Ocean is higher, the pressure over Indian ocean is lower. A negative value of Southern oscillation implies high pressure over Indian ocean (near Indonesia) and low pressure over Peru current. Thus, the Negative phase of SO brings a lower level of Monsoon in India. SO is related to El-Nino.

Pair 3 is incorrectly matched. Somalian current changes its direction every six months. After every 6-7 years, a low-pressure area is converted into a high-pressure area over Western Arabian Sea. This leads to weaker monsoon in the sub-continent.