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.
Greenhouse gases are helpful because they trap heat in Earth's atmosphere, which keeps the planet warm enough to support life. Without greenhouse gases, Earth would be too cold for humans, plants, and animals to survive. However, an overabundance of greenhouse gases can lead to climate change and negative impacts on ecosystems.
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.
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
The amount of greenhouse gases emitted by a television in a year would depend on factors such as its energy efficiency, usage patterns, and the source of electricity used to power it. Overall, televisions are not major contributors to greenhouse gas emissions compared to other household appliances.
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.
Greenhouse gases keep the earth warm.Too much greenhouse gas is causing global warming.
The glass or plastic walls of a greenhouse represent greenhouse gases in the atmosphere by trapping heat energy inside, much like how greenhouse gases in the Earth's atmosphere trap heat.
Greenhouse gases are helpful because they trap heat in Earth's atmosphere, which keeps the planet warm enough to support life. Without greenhouse gases, Earth would be too cold for humans, plants, and animals to survive. However, an overabundance of greenhouse gases can lead to climate change and negative impacts on ecosystems.
Without greenhouse gases, Earth would be much colder and unable to support life as we know it. Greenhouse gases, like carbon dioxide and methane, trap heat from the sun and keep our planet at a temperature suitable for living organisms to thrive.
The greenhouse effect is capturing heat in the atmosphere. It does this with the help of various greenhouse gases, especially carbon dioxide and methane. Because human activities are putting much more of these gases into the atmosphere without any signs of slowing, the atmosphere now has too much heat trapped in it.
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
Greenhouse gases trap heat from the sun in the Earth's atmosphere, preventing it from escaping into space. This trapped heat warms the planet, creating a stable temperature range that supports life. Without greenhouse gases, Earth would be much colder and uninhabitable.
If there were no greenhouse gases in the atmosphere, the Earth's temperature would be much colder than it is now. Greenhouse gases trap heat from the sun, so without them, the Earth would lose more heat and the average temperature would be significantly lower.
Truly, there aren't enough machines producing greenhouse gases on the Antarctic continent to have much effect at all.
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.
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.
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.