What is Global warming?

Question

I would like to know the scientific reason for this. Any guess to what way it would affect India and the World?

Answer 1

The overall increasing of the mean temperature.

Answer 2

The carbon dioxide in the atmosphere performs an important role known as greenhouse effect. The Sun emits light of different wavelengths consisting of ultraviolet(UV), visible and infrared radiations. Out of these, the harmful UV radiations are absorbed by the ozone layer which is present in the Stratosphere. The visible and infrared radiations pass through the atmosphere and reach the surface of the Earth. However, some of the light incident on the Earth is reflected back in the form of infrared light. The carbon dioxide gas present in the atmosphere absorbs the infrared radiation reflected from the Earth. Since infrared radiations have a heating effect, the atmosphere gets heated up because of the absorption of these rays. The heating up of the Earth's atmosphere due to the trapping of infrared rays by carbon dioxide is known as greenhouse effect. This leads to Global warming.
Global warming is a source of concern for India as well as the world because global warming may cause melting of polar ice caps further leading to the submergence of low lying areas under water. If these keeps on there will be no land in the world. The only thing that will remain will be water.

Answer 3

The term global warming refers to an increase of the Earth’s average temperature. Some theories say that climate change might be the result of human-generated carbon dioxide and other greenhouse gases. 79 per cent of respondents feel they understand the issue of global warming very well. But some scientists doesnot supports this theory.

But several countries agreed to the Kyoto Protocol, a proposed amendment to the United Nations Framework Convention on Climate Change (UNFCCC). The agreement commits nations to reduce their emissions of carbon dioxide and other greenhouse gases. The U.S. signed the protocol.

In India, weather-related natural disasters already cause annual chaos.Two months ago, whole regions of West Bengal disappeared under water - rescue workers had to use boats to give emergency help to more than 16 million affected people.
These were the worst floods for more than 20 years.
These can be condisered as the result of global warming.

another issue here exist is relating to himalayas.....

India also suffers acute water shortages - earlier this year the western state of Rajasthan was struck by drought.

The steady shrinking of Himalayan glaciers means the entire water system is being disrupted - global warming, that will cause even greater extremes.

The Himalayan glaciers are said to be shrinking. Statistically, it is proven that the Himalayan glaciers are actually shrinking, and within 50 to 60 years they will virtually run out of producing the water levels that we are seeing now.

This will cut down drastically the water available downstream, and in agricultural economies like the plains of UP (Uttar Pradesh) and Bihar, which are poor places to begin with. This is probably going to, over a short period of time, cause tremendous social upheaval.

Answer 4

to give u a simple answer global warming is due to the increasing pollution in the world. pollution which releases green house gases and carbon dioxide in the world and envioronment which effect ozone layer and the ultra voilet rays from sun hits the earth atmosphere and increases the warming on earth which is called global warming and due to this the ice on north and south pole will gradually melt and leads to floods and this may vanish summer season from our planet because there is a great quantity of ice there and if all of it is melted it can almost drown all the continents thats true . india may lose a land of 150 million people if this answer is hurting u then i m sorry but i too live in india near coastal line

Answer 5

Global warming is the observed increase in the average temperature of the Earth's atmosphere and oceans in recent decades and its projected continuation. Models referenced by the Intergovernmental Panel on Climate Change (IPCC) predict that global temperatures are likely to increase by 1.1 to 6.4 °C (2.0 to 11.5 °F) between 1990 and 2100. The uncertainty in this range results from both the difficulty of predicting the amount of future greenhouse gas emissions and uncertainties regarding climate sensitivity.

Global 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 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. Greenhouse gases are released by activities such as the burning of fossil fuels, land clearing, and agriculture. Other phenomena such as solar variation have had smaller but non-negligible effects on global temperature trends since 1950.[2]

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, glacier 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, even if no further greenhouse gases were released after this date, warming (and sea level) would be expected to continue to rise for more than a millennium, since CO2 has a long average atmospheric lifetime.

Remaining scientific uncertainties include the exact degree of climate change expected in the future, and especially how changes will vary from region to region across the globe. A hotly contested political and public debate has yet to be resolved, regarding whether anything should be done, and what could be cost-effectively done to reduce or reverse future warming, or to deal with the expected consequences. Most national governments have signed and ratified the Kyoto Protocol aimed at combating global warming.

Answer 6

Global warming is the observed increase in the average temperature of the Earth's atmosphere and oceans in recent decades and the projected continuation of rising temperatures. Models referenced by the Intergovernmental Panel on Climate Change (IPCC) predict that global temperatures are likely to increase by 1.1 to 6.4 °C (2.0 to 11.5 °F) between 1990 and 2100.[1] The uncertainty in this range results from both the difficulty of predicting the amount of future greenhouse gas emissions and uncertainties regarding climate sensitivity.

Global 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 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. Greenhouse gases are released by activities such as the burning of fossil fuels, land clearing, and agriculture. Other phenomena such as solar variation have had smaller but non-negligible effects on global temperature trends since 1950.[2]

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, glacier 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, even if no further greenhouse gases were released after this date, warming (and sea level) would be expected to continue to rise for more than a millennium, since CO2 has a long average atmospheric lifetime.

Answer 7

due to increase in the number of vehicles in the globe, the carbon dioxide content in the air has gone up significantly. now set this point aside. coming to the solar radiation, it consists of three main types of rays - infrared, ultraviolet and visible spectrum. the infra red radiation carry heat with them. therefore, they heat up objects on thier path. now going back to the first point, the carbon dioxide layer only allows infrared rays to enter the earth's atmosphere and not to escape from it. consequently, the temperature of the earth increases.
this is global warming...
now, coming to how india and the other countries willl be affected is that, this increase in the average earth temperature will result in melting of the polar ice-caps. this in turn increases the sea level and take to flooding of the land masses. then maybe apocalypse wil come... only god knows.. actually even we know.. we are the doers right? and the recent news is that the polar ice caps are melting a faster rate than ever in history.. now, that's a biggggg bigggg wake up call or rather an S.O.S from mother nature.

Answer 8

7 billion people in the world. These people live in houses and cook food on heated stoves and heat those homes to stay warm. They drive automobiles maybe 3 billion of those and when they're parked thay radiate heat until they've cooled to the surroundings. Airplanes maybe 300,000 or more flights a day burning fuel creating heat. Transport trucks, trains and ships at sea. Motorcycles, mopeds, generators and US large manufacturers as well as third world who refuse to take global warming seriously. That's a lot of heat being generated 24 hours a day!

Answer 9

The temperature of the atmosphere is increasing due to Industrialisation, Vehicles, deforestation, increase in population this phenomena of increasing temperature of the earth is known as Global Warming.