Question

Consider the extreme temperature variations in deserts. Which of the following is a TRUE statement?

1. Diurnal temperature ranges are minimal in sandy deserts.
2. Clear skies and low humidity lead to low diurnal temperature ranges.
3. Temperatures can exceed 50°C in some desert locations.
4. Mean annual temperatures in hot deserts are typically below 20°C.

• A. None of these
• B. iii only
• C. iii, iv
• D. i only

Answer 1

Answer:

B. iii only

• Hot deserts are generally warm throughout the year. Mean annual temperatures are above 20°C.

• They are extremely hot in summer, with day time temperatures well in excess of 40°C.

• Places such as Jacobabad (Pakistan), Death Valley (California, USA) and Azizia (Libya) have recorded temperatures higher than 50°C.

• The clear skies and low humidity also allow for high diurnal and annual ranges of temperature.