The tropical belt, located between the Tropics of Cancer and Capricorn, has been expanding since the late 1970s due to man-made global warming. This expansion of the Hadley circulation could have significant consequences, including severe drought, higher temperatures, spread of diseases, and impacts on global food supply and water resources. To curb these effects, policies aim to reduce emissions through measures like carbon credits and promoting efficient public transportation, while individuals can help by reducing their carbon footprint.

1. Growth of the
Tropical Belt
Wakako Kobayashi, Joy Yuen

2. What is the Tropical Belt?
Area between the Tropics of Cancer and the
Tropics of Capricorn
o Hadley Circulation

3. What's Happening?
• The Tropical belt has
been expanding
since the late 1970s
• Expansion of the
Hadley Circulation

4. What are the Key
Consequences?
• Severe Drought
• Diseases
• Higher Temperature
• Global Food Supply (Agriculture)
• Water Resources

5. What are the Key causes?
Man-made Global Warming:
• Tropospheric Ozone
• Black Carbon
• Greenhouse Gases
Which also causes:
•Stratospheric Cooling
•Stratospheric Ozone
Depletion

6. Possible implications of Tropical
Belts on Human Civilization
• People may experience different weather
o semi-arid regions may have drier conditions, while
other areas may have increased moisture
• Agriculture and water resources
o hardships for people who live in marginal areas
• Wider spread for tropical diseases

7. What we should do
"We need to implement more stringent policies
to curtail emissions..."
- Climatologist Robert Allen

8. What we should do
• Individually: Carpooling, biking/walking to
nearby places
• Nationally: Implementation of efficient public
services (taxis, buses, MRT's, etc.)
• Internationally: Carbon credits (Kyoto protocol)

9. Sources
• http://www.cosmic.ucar.edu/oct2012workshop/abstracts/davis.pdf
•
http://blogs.nicholas.duke.edu/thegreengrok/tclimate-change-and-a-tropical-
•
expansion/
•
http://adsabs.harvard.edu/abs/2011AGUFM.A11F0162C
•
http://www.sciencedaily.com/releases/2012/05/120516140004.htm
http://news.bbc.co.uk/2/hi/science/nature/7126069.stm
•
http://www.ec.gc.ca/inre-nwri/0CD66675-AD25-4B23-892C-5396F7876F65/ch3-
•
drought%5B1%5D.jpg
http://loveforlife.com.au/files/244-FeverEarth.jpg
•
http://images.tutorvista.com/content/environmental-changes/green-house-gases-
to-global-warming.jpeg
•
•
http://media.maps101.com/SUB/GITN/ARCHIVES/GIF/924_021508tropics.gif
http://colli239.fts.educ.msu.edu/2007/12/03/tropical-belt-2007/
•
•
http://encyclopedia2.thefreedictionary.com/Tropical+Belt
http://waterdirectors.com/wp-content/uploads/2012/02/water-scarcity-web.jpg
A_Sad_Earth_With_an_Adhesive_Bandage_Royalty_Free_Clipart_Picture_0901
10-114173-274009.jpg