Another term for "global warming" is "climate change."
Per the Intergovernmental Panel on Climate Change, which shared the 2007 Nobel Peace with Al Gore for landmark work on climate change:
The term "global warming" refers to the increase in the average temperature of global surface air and oceans since about 1950, and to continuing increases in those temperatures.
Another term for "global warming" is "climate change."
Per the Intergovernmental Panel on Climate Change, which shared the 2007 Nobel Peace with Al Gore for landmark work on climate change:
"The global surface temperature is an estimate of the global mean surface air temperature. However, for changes over time, only anomalies... are used, most commonly based on the area-weighted global average of the sea surface temperature anomaly and land surface air temperature anomaly."
Per Wikipedia, "The Intergovernmental Panel on Climate Change (IPCC) concludes that... greenhouse gases are responsible for most of the observed temperature increase since the middle of the twentieth century, and that natural phenomena such as solar variation and volcanoes probably had a small warming effect from pre-industrial times to 1950 and a small cooling effect afterward.
"These basic conclusions have been endorsed by more than 40 scientific societies and academies of science, including all of the national academies of science of the major industrialized countries."
Greenhouse gases are defined by the IPCC as "gaseous constituents of the atmosphere, both natural and anthropogenic, that absorb and emit radiation at specific wavelengths within the spectrum of thermal infrared radiation emitted by the Earth’s surface, the atmosphere itself, and by clouds."
Why Do We Care About Greenhouse Gases?
The IPCC explains "... Greenhouse gases effectively absorb thermal infrared radiation, emitted by the Earth’s surface, by the atmosphere itself due to the same gases, and by clouds.
Atmospheric radiation is emitted to all sides, including downward to the Earth’s surface. Thus, greenhouse gases trap heat within the surface-troposphere system. This is called the greenhouse effect."
Summary of "What Is Global Warming?"
Global warming refers to the increased temperature of Earth's surface, including land, water and near-surface air.
Per most of the scientific community, Earth has warmed significantly since the mid-20th century due to an increase in greenhouse gases that trap heat on Earth.
Our planet is warming up, and not in a good way! The last 20 years were the hottest in 400 years, according to several studies. An upsurge in the amount of extreme weather events, such as wildfires, heat waves, and strong tropical storms, is also attributed in part to climate change by some experts.
Between 1970 and 2004, global greenhouse gases (GHGs) have increased 70 per cent due to human activities. You don’t have to be an environmentalist to know that’s a massive jump in pollutants and a big problem for the effect it has on the planet’s natural temperature. It’s even worse for carbon dioxide; its annual emissions grew by about 80 per cent between the same period. Our society is pouring carbon dioxide into the atmosphere much faster than plants and oceans can absorb it.
According to e! Science News, atmospheric CO2 is currently 385 parts per million (PPM) and is increasing by about two PPM each year from the burning of fossil fuels (coal, oil and natural gas) and from the burning of forests. Experts predict the point of no return is 450-500 PPM — so that leaves us around 30 years before it will be very uncomfortable to breathe natural air. That may sound a long way off … but it’s probably in most people’s lifetime.
Paul Krugman, internationally renowned economist and author, painted precisely the current situation in his column for New York Times - "And as I watched the deniers make their arguments, I couldn’t help thinking that I was watching a form of treason — treason against the planet." It’s a basic fact that the Earth’s natural temperature is not going to stabilize itself unless we join our forces and start making a difference!
SUHAIL
Per the Intergovernmental Panel on Climate Change, which shared the 2007 Nobel Peace with Al Gore for landmark work on climate change:
"The global surface temperature is an estimate of the global mean surface air temperature. However, for changes over time, only anomalies... are used, most commonly based on the area-weighted global average of the sea surface temperature anomaly and land surface air temperature anomaly."
Per Wikipedia, "The Intergovernmental Panel on Climate Change (IPCC) concludes that... greenhouse gases are responsible for most of the observed temperature increase since the middle of the twentieth century, and that natural phenomena such as solar variation and volcanoes probably had a small warming effect from pre-industrial times to 1950 and a small cooling effect afterward.
"These basic conclusions have been endorsed by more than 40 scientific societies and academies of science, including all of the national academies of science of the major industrialized countries."
Greenhouse gases are defined by the IPCC as "gaseous constituents of the atmosphere, both natural and anthropogenic, that absorb and emit radiation at specific wavelengths within the spectrum of thermal infrared radiation emitted by the Earth’s surface, the atmosphere itself, and by clouds."
Why Do We Care About Greenhouse Gases?
The IPCC explains "... Greenhouse gases effectively absorb thermal infrared radiation, emitted by the Earth’s surface, by the atmosphere itself due to the same gases, and by clouds.
Atmospheric radiation is emitted to all sides, including downward to the Earth’s surface. Thus, greenhouse gases trap heat within the surface-troposphere system. This is called the greenhouse effect."
Summary of "What Is Global Warming?"
Global warming refers to the increased temperature of Earth's surface, including land, water and near-surface air.
Per most of the scientific community, Earth has warmed significantly since the mid-20th century due to an increase in greenhouse gases that trap heat on Earth.
Our planet is warming up, and not in a good way! The last 20 years were the hottest in 400 years, according to several studies. An upsurge in the amount of extreme weather events, such as wildfires, heat waves, and strong tropical storms, is also attributed in part to climate change by some experts.
Between 1970 and 2004, global greenhouse gases (GHGs) have increased 70 per cent due to human activities. You don’t have to be an environmentalist to know that’s a massive jump in pollutants and a big problem for the effect it has on the planet’s natural temperature. It’s even worse for carbon dioxide; its annual emissions grew by about 80 per cent between the same period. Our society is pouring carbon dioxide into the atmosphere much faster than plants and oceans can absorb it.
According to e! Science News, atmospheric CO2 is currently 385 parts per million (PPM) and is increasing by about two PPM each year from the burning of fossil fuels (coal, oil and natural gas) and from the burning of forests. Experts predict the point of no return is 450-500 PPM — so that leaves us around 30 years before it will be very uncomfortable to breathe natural air. That may sound a long way off … but it’s probably in most people’s lifetime.
Paul Krugman, internationally renowned economist and author, painted precisely the current situation in his column for New York Times - "And as I watched the deniers make their arguments, I couldn’t help thinking that I was watching a form of treason — treason against the planet." It’s a basic fact that the Earth’s natural temperature is not going to stabilize itself unless we join our forces and start making a difference!
SUHAIL
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