0
That depends on who you ask and what the start and end date is that you use.
If you use 1850 as a date and go to 1998, you see a rise of 0.7 degrees C.
(1850 was the lowest portion of the most recent mini ice age)
If you use 1850 to present you will see 0.3 degrees C.
If you use 1400 to present we see -.02 degrees C.
If you use 10,000 years ago we see 11 degrees C.
If we use 1938 to present we see 0.1 degrees C.
The issue is really if where to start and stop.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoAlthough the sea level has so far risen only 20 centimetres since the beginning of the twentieth century, there has already been minor inundation of some coastal areas, and some Pacific Islanders have for had their homes threatened by ocean storm surges and erosion.
Environmental scientists have already seen evidence that fewer caribou calves are being born and more of them are dying in West Greenland as a result of a warming climate. Data shows that this is occurring because spring plant growth is occurring earlier and the timing of peak food availability no longer corresponds to the timing of caribou births. When the animals arrive at their calving grounds now, pregnant females find that the plants on which they depend already have reached peak productivity and have begun to decline in nutritional value. This phenomenon, called trophic mismatch, is a predicted consequence of climate change.
In some polar regions, polar bears are falling in numbers and those that survive are smaller and weaker than normal, due to less sea ice from which they feed. Although polar bears are flourishing in other areas not yet much affected by the ice melt, this suggests that polar bears could soon become extinct in the wild.
Temperatures are now predicted to rise by over the course of the twentieth century, by between 1.1 and 6.4 degrees celsius, depending in part on the extent to which humans choose to reduce their greenhouse gas emissions. Even at the lower end of this range, there will be serious consequences for the world.
Wiki User
∙ 9y agoAn estimate of that is difficult because of the trends. In some places, the extent of gases has been low.
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How are greenhouses gases helpful?
Greenhouse gases are helpful because they keep the earth warm enough for life. Too much greenhouse gases warm the earth up too much.
How much greenhouse gases does a television emit in a year?
The actual television sets emit no greenhouse gases at all. The connections you could make between a TV set and greenhouse gases would be the emissions during the manufacturing process, and the greenhouse gases emitted as the powerplant generates electricity to run the device. The amount depends on the size of the set and how long it is running. If your TV is powered by electricity from nuclear or renewable sources, then it causes no greenhouse gases at all.
What are the gases of Greenhouse Effect?
The "greenhouse effect" is a phenomenon whereby greenhouse gases in the atmosphere act to entrap heat from the sun. This process is thought to be a self-feeding cycle which can spiral out of control. (The planet Venus is a prime example of the greenhouse effect gone wild.) The greenhouse effect is supported by the earth's natural carbon and water cycles which move carbon dioxide and water vapor in and out of the atmosphere. The greenhouse effect has kept the earth comfortably warm for millions of years.A certain amount of greenhouse effect is normal for our environment; however, too much greenhouse gas may result in extreme changes to earth's weather patterns and atmosphere, climate change.Greenhouse gases are atmospheric gases which increase the greenhouse effect. It is hoped that by reducing the emissions of these "greenhouse gases" wherever possible we may be able to reduce or eliminate the possibility of a enhanced or accelerated greenhouse effectscenario.A:The Enhanced Greenhouse Effect occurs when too much carbon dioxide is released in the air. This has happened for the past 200 years when we began burning fossil fuels for industry, transport and the generation of electricity. The enhanced, or accelerated, greenhouse effect is causing the recent warming of the planet. A runaway greenhouse effect is the cause of Venus's very hot climate because it has trapped the sun's heat so much that the oceans have boiled dry.
Why mercury is not the hottest planet in Solar System?
Because it has no atmosphere and thus no greenhouse gases. Greenhouse gases absorbs infrared heat emitted by an object and redistribute the energy throughout out a planet. Since there are no greenhouse gases present on Mercury, the energy absorbed by the planet can also escape the planet at a much greater rate into the vacuum that is space, thus keeping the surface temperature of the planet well below freezing
How far are greenhouse gases from the surface of the earth?
Greenhouse gasses are all around us. In fact, you breathe out carbon dioxide every time you exhale, and when you drink water, you're conusming H2O, which in vapor form is also a greenhouse gas.
What greenhouse gases do in the atmosphere?
Greenhouse gases keep the earth warm.Too much greenhouse gas is causing global warming.
How are greenhouses gases helpful?
Greenhouse gases are helpful because they keep the earth warm enough for life. Too much greenhouse gases warm the earth up too much.
How much greenhouse gases does coal produce?
sulphur dioxide.
What are green house gases or atmospheric gases?
Atmospheric gases trap heat so that Earth is not a frozen wasteland. Greenhouse gases is the term used to refer to heat-trapping gases such as carbon dioxide and methane because these gaseous components of the atmosphere make Earth function like a greenhouse-heat from the Sun that is reflected off the Earth is reflected back up to the atmosphere and the greenhouse gases trap some of this heat. Understand that greenhouse gases are necessary to retain some of the Sun's heat, but they are bad in excess; to much carbon dioxide( a greenhouse gas) contributes to global warming-too much heat from the Sun is trapped by the atmosphere so that temperatures on the surface rise.
Where do greenhouses gases trap energy?
Greenhouse gases are very light but they change how sunlight is reflected back out into space in that greenhouse gases do not allow as much sunlight to be reflected. This increases the amount of energy held within the atmosphere and warms the planet
Are greenhouse gases helpful?
Greenhouse gases are helpful because they keep the earth warm enough for life. They are essential.Too much greenhouse gases are unhelpful because they make the earth too hot. Global warming is causing climate change which may make the world very uncomfortable for our children and grandchildren.
How much greenhouse gases does a television emit in a year?
The actual television sets emit no greenhouse gases at all. The connections you could make between a TV set and greenhouse gases would be the emissions during the manufacturing process, and the greenhouse gases emitted as the powerplant generates electricity to run the device. The amount depends on the size of the set and how long it is running. If your TV is powered by electricity from nuclear or renewable sources, then it causes no greenhouse gases at all.
What are the GreenHouse Gas emissions in Antarctica?
Truly, there aren't enough machines producing greenhouse gases on the Antarctic continent to have much effect at all.
What are greenhouse gases used for?
Normally greenhouse gases are bad, but without it, Earth would have no way of holding in heat and our planet would be below 0 degrees. We're just putting out too much.
How much surface area of the earth is covered by greenhouse gases?
Greenhouse gases, particularly carbon dioxide, are part of the Earth's atmosphere; as such, they cover all of the Earth's surface. The whole world is covered by atmosphere.
What are the gases of Greenhouse Effect?
The "greenhouse effect" is a phenomenon whereby greenhouse gases in the atmosphere act to entrap heat from the sun. This process is thought to be a self-feeding cycle which can spiral out of control. (The planet Venus is a prime example of the greenhouse effect gone wild.) The greenhouse effect is supported by the earth's natural carbon and water cycles which move carbon dioxide and water vapor in and out of the atmosphere. The greenhouse effect has kept the earth comfortably warm for millions of years.A certain amount of greenhouse effect is normal for our environment; however, too much greenhouse gas may result in extreme changes to earth's weather patterns and atmosphere, climate change.Greenhouse gases are atmospheric gases which increase the greenhouse effect. It is hoped that by reducing the emissions of these "greenhouse gases" wherever possible we may be able to reduce or eliminate the possibility of a enhanced or accelerated greenhouse effectscenario.A:The Enhanced Greenhouse Effect occurs when too much carbon dioxide is released in the air. This has happened for the past 200 years when we began burning fossil fuels for industry, transport and the generation of electricity. The enhanced, or accelerated, greenhouse effect is causing the recent warming of the planet. A runaway greenhouse effect is the cause of Venus's very hot climate because it has trapped the sun's heat so much that the oceans have boiled dry.
Why do you need some greenhouse gases?
Greenhouse gases reflect the suns radiation back against the planet, thus keeping it warm. Too little and we'd get too cold, too much we'd get too warm.
