The average weather conditions in an area over a long period of time (20 + years)
The condition of Earth's atmosphere at a particular time and place.
Emission of energy from the sun in the form of shortwave electromagnetic waves.
Natural situation in which heat is retained in Earth's atmosphere by carbon dioxide, methane, water vapor, and other gases
changes in the earth's climate mostly as a result of changes in temperature and precipitation.
Deviation from what is normal
anthropogenic climate change
climate change which is human caused, either directly or indirectly
Coal, oil, natural gas, and other fuels that are ancient remains of plants and animals.
dark spots on sun associated with increase in solar storms
Precession, eccentricity, and obliquity Precession is the wobble in Earth's axis, obliquity is the variation in Earth's tilt, and eccentricity is the change in the shape of Earth's orbit (more elliptical vs more round)
The wobble of earth
A long period of dry weather
A prolonged period of extensively hot weather.
scientific research is evaluated by experts in same field
mitigation (related to climate change)
making changes that reduce greenhouse gas emissions
adaptation (related to climate change)
altering human behavior to adapt to the changing climate
Energy sources that release very small amounts of greenhouse gases
Is energy which comes from natural resources such as sunlight, wind, rain, tides, and geothermal heat, which are renewable (naturally replenished).
fuels made from crops that can replace gasoline in vehicles
cars ability to go farther on the same amount of gasoline
combines gasoline and electricity to power and move the car (solar, hydrogen fuel cells)
What happens to solar radiation that reaches Earth's atmosphere? (3)
Some is absorbed and converted to heat, Some of that heat radiates back into space, and Some of that heat is trapped in the atmosphere,
What happens to shortwave radiation absorbed by earth? (4)
Reflected at the top of the atmosphere, Reflected, absorbed or scattered by clouds, water vapour, dust O3 or other gases in the atmosphere, Transmitted to the surface and then either absorbed or reflected back upward into the atmosphere (albedo)
What are major GREENHOUSE GASES?
water vapor (H2O), carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O)
What are top two ways people emit greenhouse gases?
burning fossil fuels for electricity and transportation
Rank greenhouse gases in order for greatest to least influence on climate change (anthropogenic influences).
carbon dioxide, methane, nitrous oxide, CFCs
Positive feedback mechanism of global climate change
Process that increases global climate change
Ability of a surface to reflect sunlight
Electromagnetic long wave in the form of heat
long tube of ice drilled out of a glacier that tell us about the atmosphere and climate of the past
making changes that reduce greenhouse gas emissions.
altering human behavior to adapt to the changing climate that is inevitable.