Q. Consider the following statement regarding Foehn wind.
- Warm dry air motion downwind side of a mountain.
- Cold wet air motion downwind side of a mountain.
Which of the above statements are correct?
a) Only 1
b) Only 2
c) Both 1 & 2
d) None of these
ANSWER :- a)
Related Fact:
- On July 1, 2021 The United Nations’ World Meteorological Organization recognized a new record high temperature for Antarctica. On February 6, 2020, the Esperanza station (the Argentine research station in Trinity Peninsula) experienced 18.3 degrees Celsius.
- The previous record for high temperature was 17.5 degrees Celsius, recorded on March 24, 2015, at the same station.
- Verification of this maximum temperature record is important because it helps us to build up a picture of the weather and climate in one of Earth’s final frontiers.
- The Antarctic Peninsula is among the fastest-warming regions of the planet, almost 3°C over the last 50 years. This new temperature record is therefore consistent with the climate change that is taking place.
- The warming temperature and increasing strength of westerly winds can enhance the Antarctic ice sheet melting even in winter due to the Foehn wind effect,”
- Föhn or Foehn winds are generally categorized by warm dry air motion descending in the lee or downwind side of a mountain.
- When the wind hits the mountain in its way, it rises above and causes precipitation in the upwind side of the mountain, while the downwind side of the mountain becomes dry and warm.
- These winds can warm the surface air temperature in the downwind side by several degrees for a prolonged time.
ABHISHEK KUMAR