Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
SlideShare a Scribd company logo

Global warming

•Download as PPTX, PDF•
•
S
SARATH K C

Global warming refers to the long-term rise in the average temperature of the Earth's climate system due to increased greenhouse gas emissions. The effects of global warming include increasing global temperatures, rising sea levels, more extreme weather events, and threats to food security and populated areas near rising seas. While some effects will be seen in coming decades or centuries, many will persist for tens of thousands of years due to the large inertia of the climate system and long lifetime of greenhouse gases in the atmosphere.

1 of 7
GLOBAL WARMING
Global warming, also referred to as climate change, is the observed century-scale rise in the average temperature of the Earth's Climate system and its related effects. Multiple lines of scientific evidence show that the climate system is warming.
Anticipated effects incl ude increasing global temperatures, rising sea level, changing precipitation, and expansion of deserts in the subtropics. Warming is expected to be greater over land than over the oceans and greatest in the arctic, with the continuing retreat of glaciers, permafrost and sea ice.
Other likely changes include more frequent extreme weather events such as heat wave, droughts, heavy rainfall with floods and heavy snowfall; ocean acidification; and species extinction due to shifting temperature regimes. Effects significant to humans include the threat to food security from decreasing crop yields and the abandonment of populated area due to rising sea level. Because the climate system has a large “inertia" and greenhouse gases will remain in the atmosphere for a long time, many of these effects will persist for not only decades or centuries, but for tens of thousands of years to come.
CAUSES FOR INCREASING TEMPERATURE 1. Greenhouse gases 2. Aerosols and soot 3. Solar activity 4. Variations in Earth's orbit
ENVIRONMENTAL EFFECTS 1. Extreme weather 2. Sea level rise 3. Ecological systems 4. Long-term effects 5. Large-scale and abrupt impacts
THANK YOU

More Related Content

Global warming

  • 2. Global warming, also referred to as climate change, is the observed century-scale rise in the average temperature of the Earth's Climate system and its related effects. Multiple lines of scientific evidence show that the climate system is warming.
  • 3. Anticipated effects incl ude increasing global temperatures, rising sea level, changing precipitation, and expansion of deserts in the subtropics. Warming is expected to be greater over land than over the oceans and greatest in the arctic, with the continuing retreat of glaciers, permafrost and sea ice.
  • 4. Other likely changes include more frequent extreme weather events such as heat wave, droughts, heavy rainfall with floods and heavy snowfall; ocean acidification; and species extinction due to shifting temperature regimes. Effects significant to humans include the threat to food security from decreasing crop yields and the abandonment of populated area due to rising sea level. Because the climate system has a large “inertia" and greenhouse gases will remain in the atmosphere for a long time, many of these effects will persist for not only decades or centuries, but for tens of thousands of years to come.
  • 5. CAUSES FOR INCREASING TEMPERATURE 1. Greenhouse gases 2. Aerosols and soot 3. Solar activity 4. Variations in Earth's orbit
  • 6. ENVIRONMENTAL EFFECTS 1. Extreme weather 2. Sea level rise 3. Ecological systems 4. Long-term effects 5. Large-scale and abrupt impacts