Global Warming

What are the three most important greenhouse gasses?
Carbon Dioxide, Methane and Nitrous Oxide.
What is Solar Radiation?
Electromagnetic radiation emitted by the Sun. Has a distinctive range of wavelengths (spectrum)determined by the temperature of the Sun, peaking in visible wavelengths.
What is an Aerosol?
Aerosols may be of either natural oranthropogenic origin.

They tend to have a cooling effect.

What are some human activities contributing to climate change?
Fossil fuel burning(transportation, heating, cooling, electricity), Deforestation and Cement manufacturing.
What powers the climate system?
Solar radiation.
How much of the solar radiation is absorbed by the earth?
About half.

What type of radiation is emitted from the Earth’s surface?
Infrared radiation.
What effect do greenhouse gasses have on the infrared radiation emitted from the Earth’s surface?
The greenhouse gasses absorb most of the radiation, heating the atmosphere.
Is infrared radiation visible?
What solar radiation is visible?
Wavelengths from 400 nm to 700 nm.

What is a sink?
Any process, activity or mechanism which removes a greenhouse gas, anaerosol or a precursor of a greenhouse gas or aerosol from the atmosphere.
What is the average amount of carbon dioxide emmited for an American?
18 tonnes.
What is a source.(sources and sinks)
Any process, activity or mechanism that releases agreenhouse gas, an aerosol, or a precursor of a greenhouse gas or aerosolinto the atmosphere.
What are the most substantial aerosol?

What is a fossil fuel?
Carbon-based fuels from fossil hydrocarbon deposits, including coal, peat,oil, and natural gas.
What is the energy balance?
The difference between the total incoming and total outgoing energy in theclimate system. If this balance is positive, warming occurs; if it is negative,cooling occurs.
What is the carbon cycle?
The term used to describe the flow of carbon (in various forms, e.

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g. ascarbon dioxide) through the atmosphere, ocean, terrestrial biosphere andlithosphere.

What is Albedo?
The fraction of solar radiation reflected by a surface or object, often expressedas a percentage.
What part of the Earth’s surface has a high albedo?
Snow-covered surfaces.
What part of the Earth’s surface has a low Albedo?
Vegetation-covered surfaces andoceans have a low albedo.
What are the anthropogenic sources of Aerosols?
Fossil fuel and biomass burning.
What incident led scientists to beleive that Aerosols had a strong cooling effect?
The erruption of the Pinatubo volcano.
What is the biggest carbon resevoir on Earth?
The deep ocean.
Which atmospheric constituents/entities, may reflect incoming solar radiation?
Clouds and other aerosols.
What are three ways to change the Earth’s energy balance?
Greenhouse gasses, aerosols and the reflective property of the Earth’s surface.
What is a Hydrocarbon?
An organic compound consisting entirely of hydrogen and carbon.(Crude Oil)
What is the Earth’s largest known Oil feild?