Global Climate Change and Ozone Depletion – Flashcards

Has gone through global cooling and global warming

Scientists look at tiny air bubbles topped in ice cores learn about -troposphere composition, temperature trends, greenhouse gas concentrations, solar/snowfall/and forest fire activity

-the sun -greenhouse gases cause by the warm temperature at the troposphere and surface -Ocean stores CO2, and heat, which leads to evaporation and receives more water, moves stored heat to other parts of the world -natural cooling process through water vapor in the troposphere (heat rises)

Methane Carbon Dioxide (only comes from human sources) Water Vapor Nitrous Oxide *are mostly due to fossil fuel burning,deforestation,and agriculture They influence the greenhouse effect by trapping in heat within their molecules, which are eventually released then combined with another greenhouse gas molecule.

20th century was the hottest century in the past 100 years, glaciers and floating sea ice are melting and shrinking at increasing rates.

It is a global issue that will last for a long time, and will eventually lead to long term political issues. There are more harmful aspects than benefits. The options given to decrease global warming are known to help, but to do not help the people economically. Evidence of global warming existing is the reduction of water sources AND the melting of ice caps that are used to support life in the Arctic.

Limit fossil fuels/remove CO2 from small stack and vehicle emissions shift from coal to natural gas/ store c02 by planting trees improve energy efficiency/ place CO2 deep underground Political Strategies can be used to decrease the amount of greenhouse emissions by passing law and acts that will help limit the production of air pollutants.

A treaty on global warming which went into effect 2005, with 189 countries participating. Developed countries have to cut their greenhouse gas emissions Developing countries were excluded. U.S. did not sign, but California and Maine are participating U.S. did not sign because China, India and Brazil were excluded

When there is less ozone in the stratosphere allows for more harmful UV radiation to reach the earth's surface. The ozone helps protect us from UV Rays. Chlorofluorocarbon (CFCs) have lowered the average concentrations of ozone in the stratosphere CFCs are no longer made The ozone is depleted four months of each year *Ozone thinning*: caused by CFCs and other ozone depleting chemical. They increase UV radiation. Through an economic standpoint it will cost a lot more to maintain later on.

Chemicals that potentially deplete the ozone layer contain chlorine or bromine atoms Have long atmospheric life

An international agreement adopted in 1987 to control the production and consumption of specific man-made chemicals that destroy the ozone layer, the earth's protective shield. Reduces the consumption of ODS

worse sunburn, cataracts, skin cancer, immune system suppression.

Established primary and secondary air quality standards. Sets limits and goals to reduce mobile source air pollution and ambient air quality standards.

Maintains the nation's water quality by preventing point and non point source pollution.

Mandates an improvement of energy efficiency and calls for an increase in clean energy.

Promotes the enhancement of the environment

Regulate mining activity, rehabilitate abandoned mines, and protect society and the environment from the adverse effect of mining operations .

Established a program for the disposal of highly radioactive materials.

Chlorofluorocarbon Found in refrigerants and aerosol propellents Chlorine atoms into the ozone which are released when in contact with UV Rays Cause ozone depletion

The increase in temperature caused by the release of greenhouse gases' molecules when exposed to Solar radiation. The atmosphere warms down the surface of the planet when it's expected temperature is higher than if it didn't have an atmosphere.

Nitrogen oxides, Volatile Organic Compounds (VOCs), tropospheric ozone, and PAN (peroxyacytyl nitrate). It is a mixture of *air pollutants* that are activated by UV Rays. The air pollutants have become chemically altered through the combination of other major air pollutants.

The urban parts of a place are significantly higher in temperature than in their rural counterparts. Caused by human activities. They can be reduced by planting more trees/vegetation, green roofs, cool roofs, cool pavement The effect harms the communities that inhabit the cities.

Stratospheric Ozone: When there is less ozone, the stratosphere allows for more pollutants to come through and be released by the sun's UV rays. Tropospheric Ozone: When the ground level is inhabited by air pollutants that may aid in the production of acid rain. IT IS A POLLUTANT