Question 13Give a reasoned accountGS1GS1
Give a reasoned account of the distribution of deserts across the earth with the help of relevant examples.
Introduction
Desert refers to a geographic phenomenon characterized with low rainfall (< 25 cm/year), low productivity, low vegetation and wildlife.
19 words
Main Body
The above distribution can be explained as follows:
1Desiccating effect of Ocean Currents:
Presence of cold ocean currents causes anti-cyclonic conditions
✓ Peru CurrentPatagonia desert
2Presence of location along Sub-tropical high pressure belt, As anti-cyclonic condition, due to convergence of air → no rainfall → △ Thar desert
3Continentality: location away from the coast → air loses moisture → △ Gobi desert
4Absence of obstruction that can force moisture laden to rain → Arawalis parallel to south-westerly so no rainfall over Thar
5Anthropogenic factors:
Deep sea trawling causing deep water deserts ✓ Atlantic Ocean
Overgrazing ✓ Ranni Grasslands
Deforestation expanding to give wood for chopsticksOver-extraction of groundwater as in Punjab ✓ ISEO says desertification at rate of 500 m²/year
6Cold deserts due to high altitude and cold temperature that dray out the air
✓ Ladakh and Gobi desert
Abidjan declaration must be implemented through joint collaboration under SDG 17.
163 words8 paragraphs
Conclusion
Abidjan declaration must be implemented through joint collaboration under SDG 17.
11 words
Diagram
Map showing world deserts marked: Saharan, Mohave, Thar, Arabian, Kalahari, Patagonia, Simpson, Gobi, Atacama, Nefud
Topper
BHAVESH JALPAN
AIR 1282024
Subject & Paper
GS1GS1
Topic
Salient features of World's Physical Geography
Distribution of Key Natural Resources
Desert Distribution
Writing Stats
193
Total words
8
Paragraphs
descriptive
Tone