Global warming...explain??

Question

i dont really understand....i mean yea if the ice all melts...but can someone please explain whats after that & what are the causes & effects of these disasters?

thanks hunnies

Isabelle xox0

Answer 1

Global warming is the observed increase in the average temperature of the Earth's atmosphere and oceans in recent decades.

The Earth's average near-surface atmospheric temperature rose 0.6 ± 0.2 °Celsius (1.1 ± 0.4 °Fahrenheit) in the 20th century. The prevailing scientific opinion on climate change is that "most of the warming observed over the last 50 years is attributable to human activities"[1].

The increased amounts of carbon dioxide (CO2) and other greenhouse gases (GHGs) are the primary causes of the human-induced component of warming. They are released by the burning of fossil fuels, land clearing and agriculture, etc. and lead to an increase in the greenhouse effect. The first speculation that a greenhouse effect might occur was by the Swedish chemist Svante Arrhenius in 1897, although it did not become a topic of popular debate until some 90 years later. [2]

The measure of the response to increased GHGs, and other anthropogenic and natural climate forcings, is climate sensitivity. It is found by observational [3] and model studies. This sensitivity is usually expressed in terms of the temperature response expected from a doubling of CO2 in the atmosphere. The current literature estimates sensitivity in the range 1.5–4.5 °C (2.7–8.1 °F). Models referenced by the Intergovernmental Panel on Climate Change (IPCC) project that global temperatures may increase between 1.4 and 5.8 °C (2.5 to 10.5 °F) between 1990 and 2100. The uncertainty in this range results from both the difficulty of estimating the volume of future greenhouse gas emissions and uncertainty about climate sensitivity.

An increase in global temperatures can in turn cause other changes, including a rising sea level and changes in the amount and pattern of precipitation. These changes may increase the frequency and intensity of extreme weather events, such as floods, droughts, heat waves, hurricanes, and tornados. Other consequences include higher or lower agricultural yields, glacial retreat, reduced summer streamflows, species extinctions and increases in the ranges of disease vectors. Warming is expected to affect the number and magnitude of these events; however, it is difficult to connect particular events to global warming. Although most studies focus on the period up to 2100, warming (and sea level rise due to thermal expansion) is expected to continue past then, since CO2 has an estimated 50 to 200 year long average atmospheric lifetime [4]. Only a small minority of climate scientists discount the role that humanity's actions have played in recent warming. However, the uncertainty is more significant regarding how much climate change should be expected in the future, and there is a hotly contested political and public debate over what, if anything, should be done to reduce or reverse future warming, and how to deal with the predicted consequences.

Answer 2

Saule has provided an excellent answer. I will only add that global warming could lead to a sudden ice age. It may seem odd, but the melting of the polar regions would put a great deal of cold, fresh water into the oceans. That's what would cause the sea levels to rise, but it might also stop the global conveyor belts of warmth such as the Gulf stream off the US coast. If this happens, the northern and southern hemispheres will suddenly get much colder, causing an ice age, while the areas closer to the equator will get much hotter. The areas where the hot an cold meet will be in nearly constant rough weather.

Answer 3

Normally, if there is more energy than planet Earth needs, the excess is radiated into Outer Space as microwaves. This is our "Cooling system."

But certain gasses trap the microwaves, and keep them from radiating. CO2 (carbon dioxide) and Methane are the biggest ones. CO2 is more prevalent, but methane is more potent. This is called the "greenhouse effect".

For centuries, we have been deforesting our planet, to make way for towns and cities. Vegetation is Earth's way of turning CO2 back into oxygen. The less greenery, the more Co2.

Also, we take fossil fuels out of the ground, and burn them. So besides the heat of the sun, we make our own heat from oil, gas, and coal.
More heat into the pot of soup.

And the Co2 we burn , mostly from humans and our cars, is trapping the extra heat energy, so that it cannot radiate off
harmlessly into outer space.

So, the climate is changing, and even a few degrees of increase of temperature, will kill us all, besides melting the icecaps and flooding island countries, and wiping out Florida and Louisiana.

Hurricanes will continue to get bigger and more devastating, and there will be a coming Global Superstorm which none of us really wants to try to live through.

Answer 4

If all the ice melt in the North pole melt... Mostly half the state will be flooded and filled with water! The sun cause the ice to melt and the effect si that half the state will be flooded and have tons of disteaers goin on. Have you ever watched "The day after tomrrow"? lol

Answer 5

parts of lands in this world will be under water, like those who are low in sea level (i.e. half of florida will be under water; New York; Venice, Italy; New Orleans, and so on...) See pollution causes holes in the atmosphere (not sure what it's called) and the suns rays can beat harder on the Earth's surface. Temperature's will increase, making the weather mostly hotter, and there will be more storms (i.e. Hurricans, tornadoes, etc.) And there may be more diseases to spread around.

THAT'S why global warming is bad. But the Oil companies don't care cuz they just want to be rich.