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Cause and Effect of Smoking
Cambodia

Climate Change Impacts and Vulnerability
By Kalyan Keo, Programme Analyst Environment and Energy Unit, UNDP Cambodia Siem Reap 01 August 2012

Outline
Cambodia

• • • •

Climate Change Science Climate Change Impacts Climate Change Vulnerability Climate Change Implications

2

Cambodia

Weather
Day

Climate
Average weather over a period of time ranging from months to thousand/millions of years.

to day status and (short term) changes in the status of the atmosphere in terms of meteorological parameters: rainfall, temperatures, pressure, etc. be perceived by people (bad, good, cold, warm, rainy, extremes - heat waves, downpours, cold spells)

Can

Cannot be perceived – needs science. Concerns the status of the entire Earth system, (atmosphere, land, oceans, snow, ice and living things)

Climate is what you expect, weather is what you get.

Natural and man-made changes in climate
Cambodia

Cambodia

This natural effect is responsible for the comfortable living conditions on earth, with a mean global temperature of 15 ºC. Without GHGs the mean temperature would be approximately 30 ºC lower.

5

What is Climate Change?
Changes in long-term averages of daily weather
Cambodia

6

Greenhouse Effect
SUN

Cambodia

GREENHOUSE EFFECT

INFRARED RADIATION

GHGs GHGs

EARTH

7

7

Causes of Climate Change
Cambodia

Increase in Green House Gases mainly due to human activities such as:
• • • Burning fossil fuels (coal, oil, natural gas) to generate energy Land use change and deforestation Agricultural activities or change in land use such as rice paddies, livestock, waste dumps, and domestic sewage Usage of chemical fertilizers or pesticides

•

This leads to Greenhouse Effect – increase in GHGs in atmosphere preventing heat to escape into the space, keeping the earth warmer
8

Impacts of Climate Change
Cambodia

Rise in sea level

Increase in Earth’s surface temperature

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