Does global warming exist

Answer 1

Global climate change is a fact, demonstrated by historical evidence about the composition of various gases throughout Earth's history. Global temperature changes over time ("ice ages", "warming periods") Ice core sampling in the Arctic and Antarctic circles give us a record of CO2 and CH4 (methane) levels, as well as nitrogen and oxygen levels. From this information, climatologists can calculate average temperature over time. As far as the evidence shows, the composition of the Earth's atmosphere has stayed essentially the same for the last 800,000 years, as far back as ice core records can show. This composition is the textbook common 78% nitrogen gas, 21% oxygen gas, 1% other (Argon, CO2, water vapor, Neon and Helium). CO2 is of particular importance to the discussion on global warming because experiments have shown it to absorb infrared light (what we feel as radiated heat, by the sun or a fire), and therefore increase the temperature of the atmosphere. It is also known that since the Industrial Revolution, which brought about the common use of fossil fuels, global CO2 levels have nearly doubled.

A:The simple answer is yes: Temperature records show that average global temperatures have risen by 0.75 degrees Celsius since the Industrial Revolution and are now the highest for at least two thousand years, estimated to likely be the highest for at least a million years. And most of this rise has occurred since the 1970s. For the purpose of this question, we do not need to establish why this rise has occurred, but even sceptics acknowledge that carbon dioxide levels have risen rapidly since the Industrial Revolution.

Answer 2

AnswerOf course it does! It has been proven that our global temperature is on the rise. It can be seen by satellite that shows both the arctic and antarctic ice caps are getting smaller. Also, right now in February of 2010, the winter Olympics are taking place in Vancouver, Canada. Too bad because there is no snow in Vancouver. It's only raining because of global warming. They actually had to import snow in trucks. I remember when I was little, it always snowed. Nowadays, it rains a lot in the winter. The rumor that global warming doesn't exist is a Republican trend. Each summer, the temperatures go up.

Answer 3

no

Answer:

Global warming has been identified as a major issue for the global community. More properly this is called "Global Climate Change" as some areas may be warmer, some cooler, some wetter, some drier...

Background: The contention of the larger number of climatologists is that human activities since the industrial revolution have increased the content of CO2, methane, and other gases in the atmosphere that trap solar heat. At the same time human activities have reduced the forest cover that had traditionally absorbed these same materials. They state that an increasing level of these atmospheric constituents has lead to a chain of chemical and physical changes that have increased the world's average temperature.

Observations of atmospheric gas composition, average sea water temperatures, atmospheric temperatures etc. confirm the trends and support the proposition.

Potential Impacts:

1. The sea levels may rise. Technically this may be caused by melting ice from the polar ice caps or an increase in sea height as the less dense water is less compressed. Low lying land like many Pacific Islands and Miami will be under water.

2. Serious climate changes may result from diverted ocean currents. As an example, the Gulf Stream keeps Europe warm. If the Stream is not running Europe may be much cooler and drier. Crops may not grow.

3. Ecology changes on the land could include species of animals and plants extending their range to the polar regions. Local flora and fauna may become extinct. A good example is the spread of Africanized bees and Fire Ants. Sea life may also be impacted both through the introduction of competitive species presently kept in other areas by water temperature changes, and by failure to adapt to less saline water.

4. Human society may be disrupted if changes in rainfall and temperature cause crop failure. Famine refugees may require significant humanitarian attention by the "lucky" nations.

Answer 4

If global warming continues eventually our Ozone layer will disappear. When this happens the suns rays will destroy all organic life breaking down the life cycle. It will also be too hot for us to exist except maybe deeep underground

Answer 5

Yes, WE DO!