what is global warming and its impact on natural and human system?

Answer 1

The impact is that politicians are using this fear to get the voters to elect them to office, and the "scientist" are using global warming to get more funding from the gvmt.

Other than that, no one would be interested, or notice anything different.

Answer 2

This is from Oprah's website from the show with Al Gore. It was really interesting.

First, it's important to understand that the atmosphere is extremely thin. "The late Carl Sagan used to say if you had a globe with a coat of varnish, the thinness of that varnish relative to the globe is similar to the thinness of the atmosphere to the planet," Gore says.

That atmosphere, which is just a few miles above the Earth's surface, traps some amount of the sun's energy, or light radiation, as it hits the Earth. "That's a good thing, the natural trapping of [the sun's radiation], because it keeps the temperatures within comfortable boundaries," Gore says. While other planets are either much too hot or much too cold, Earth is just like Goldilocks—just right for life.

As humans add pollution like carbon dioxide (also known as CO2) into the air, the Earth's atmosphere becomes thicker. The thicker atmosphere traps more of the reflected radiation, raising overall temperature. This process is what we call "global warming." Other major factors adding to global warming, Gore says, include the burning of coal, oil, gasoline and forests.

Answer 3

Global Warming is the idea that light loses energy passing through the atmosphere on its way from the sun, and becomes trapped within our ecosphere. Normally enough sunlight is reflected back into space, so conditions on earth stay stable. Adding certain gases to the atmosphere increases the amount of the sun's energy that is trapped, warming things up. This has been tracked for about a century, as factories, cars, etc produce a lot of those gases. Current projections by the scientific community are that this will reach a catastrophic level soon, much sooner than predicted. That is believed to be because production of those gases has increased more than predicted, and less has been done about the problem than predicted.

Carbon dioxide is the main problem. Doubling the level of CO2 would increase the earth's temperature by about 7 degrees. That has only happened once in the earth's history, and it killed off everything except the algae. Scientists are monitoring the level of CO2 as it rises.

Answer 4

Global warming is a new threat to prevailing 'Global balanced environment'

Causes:- increse in the temparature of the earth due to reflection of sun rays, environmental pollution by hazardous gases, reduction in greenary,

Consequences:- warming causes the ice concentrated at the poles of the earth to transfer into water , therby increasing the ses and ocean level and the land on the earth reduces day by day. Apart from this untimely mansoons and natural disaster causes lots of distruction.

Precautions: increase greenary, eco-friendly vehicles,

Answer 5

Global warming refers to the increase in the average temperature of the Earth's near-surface air and oceans in recent decades and its projected continuation.
Global average air temperature near the Earth's surface rose 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the twentieth century. The Intergovernmental Panel on Climate Change (IPCC) concludes, "most of the observed increase in globally averaged temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations, which leads to warming of the surface and lower atmosphere by increasing the greenhouse effect. Natural phenomena such as solar variation combined with volcanoes have probably had a small warming effect from pre-industrial times to 1950, but a small cooling effect since 1950. These basic conclusions have been endorsed by at least 30 scientific societies and academies of science, including all of the national academies of science of the major industrialized countries. The American Association of Petroleum Geologists is the only scientific society that officially rejects these conclusions. A few individual scientists disagree with some of the main conclusions of the IPCC.
An increase in global temperatures is expected to cause other changes, including sea level rise, increased intensity of extreme weather events, and changes in the amount and pattern of precipitation. Other effects include changes in agricultural yields, glacier retreat, species extinctions and increases in the ranges of disease vectors.

Answer 6

Global warming is caused by air pollution. Air pollution make a layer in atmosper that traps heat from sun. The heat from sun comes to earth, and it trys to reflect back in air, but it get trapped by air pollution layer. Global warming has started to malt ICE on north pole that also increase global warming. The ICE malting can cause folding like Katrina.

Answer 7

Global warming refers to the increase in the average temperature of the Earth's near-surface air and oceans in recent decades and its projected continuation.

Global average air temperature near the Earth's surface rose 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the twentieth century. The Intergovernmental Panel on Climate Change (IPCC) concludes, "most of the observed increase in globally averaged temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations,"[1] which leads to warming of the surface and lower atmosphere by increasing the greenhouse effect. Natural phenomena such as solar variation combined with volcanoes have probably had a small warming effect from pre-industrial times to 1950, but a small cooling effect since 1950.[2][3] These basic conclusions have been endorsed by at least 30 scientific societies and academies of science, including all of the national academies of science of the major industrialized countries. The American Association of Petroleum Geologists is the only scientific society that officially rejects these conclusions.[4][5] A few individual scientists disagree with some of the main conclusions of the IPCC.[6]

Climate models referenced by the IPCC project that global surface temperatures are likely to increase by 1.1 to 6.4 °C (2.0 to 11.5 °F) between 1990 and 2100.[1] The range of values reflects the use of differing scenarios of future greenhouse gas emissions and results of models with differences in climate sensitivity. Although most studies focus on the period up to 2100, warming and sea level rise are expected to continue for more than a millennium even if greenhouse gas levels are stabilized.[1] This reflects the large heat capacity of the oceans.

An increase in global temperatures is expected to cause other changes, including sea level rise, increased intensity of extreme weather events, and changes in the amount and pattern of precipitation. Other effects include changes in agricultural yields, glacier retreat, species extinctions and increases in the ranges of disease vectors.

Remaining scientific uncertainties include the exact degree of climate change expected in the future, and how changes will vary from region to region around the globe. There is ongoing political and public debate on a world scale regarding what, if any, action should be taken to reduce or reverse future warming or to adapt to its expected consequences. Most national governments have signed and ratified the Kyoto Protocol, aimed at reducing greenhouse gas emissions

Answer 8

Some gases ("greenhouse gases") let sunlight in, which warms the Earth, and then block that heat from leaving. That's the "greenhouse effect", and it's a natural thing, mostly caused by water vapor.

Man is making excessive amounts of greenhouse gases, mostly by burning fossil fuels. That causes the delicate natural balance to go out of whack and the Earth warms. That's global warming.

It won't be a Hollywood style disaster. Gradually coastal areas will flood and agriculture will be damaged. But it will be very bad. Rich countries will cope, but it will take huge amounts of money. In poor countries many people will die of starvation, but not all of them.

Most scientists say, in 20-50 years. But we need to start right now to fix it, fixing it will take even longer than that.

More information here:

http://profend.com/global-warming/

Lots of numerical scientific data proving it real here:

http://en.wikipedia.org/wiki/Image:Climate_Change_Attribution.png
http://www.ipcc.ch/SPM2feb07.pdf

Answer 9

Global warming is the increase in the average temperature of the Earth's near-surface air and oceans in recent decades and its projected continuation.

Refer - http://en.wikipedia.org/wiki/Global_warming

Answer 10

Global warming is scheme to further control, consolidate power, and generate new taxes.