What is the meaning of global warning?

Answer 1

Global warming means gradual increase the in the earth's temperature. This happens due to the excess amount of carbon dioxide, carbon monoxide and such other green house gases in the earth's environment, which are caused by burning of the fossil fuels, coal, etc. These gases have the capacity to retain heat and hence too much of these gases raises the earth's temperature. Such abnormal increase in earth's temperature causes melting of ice on polar regions, which increases the water-levels in the oceans and if this continues to happen then one day whole of the earth will be under water.

Answer 2

Don't look up in the sky and look if there was any global warming. When you get up in the morning first stop using the brand new tooth paste you have bought a couple of days ago as it contains a compound called chloro fluro carbon (CFC) which after much usage makes a hole in the ozone layer up above. Ozone layer stops much heating up of the earth below. More land is grabbed, the trees cut and more colonies spring up these days. As you are aware trees breath in carbon dioxide and contribute more oxygen in the atmosphere. Common households such as refrigerator, locomotives etc cause the imbalance in the atmosphere that results in the hard icy rocks to melt away to make more flood. If man stops his fight against the nature our younger generations would sure have some oxygen left in the atmos to breath in a new life. Global warming is a 'global warning', my dear.

Answer 3

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 atmospheric lifetime of 50 to 200 years. [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 4

Global warning means the warning for all those residing in the Globe to wake up and take proper consideration and steps to avoid any loss of any aspects.

Answer 5

an increase in global average surface temperature resulting from an increase in the amount of carbon dioxide, methane, and certain other trace gases in the atmosphere. These gases are known collectively as greenhouse gases because they contribute to a warming of the Earth's surface and lower atmosphere, a phenomenon called the greenhouse effect. In part because the emission of carbon dioxide is related to the essential use of carbon-based energy sources, the issue of global warming incorporates a broad scientific and political debate about its significance and consequences...

Answer 6

Global warming produces a rise in temperatures across the world and has an adverse affect on our environment, health, and the animal kingdom.

Answer 7

global warming

the gradual increase of the temperature of the earth's lower atmosphere as a result of the increase in greenhouse gases since the Industrial Revolution.

Answer 8

RISK TO ALL WORLD IS CALLED GLOBAL WARNING. DO NOT CUT FOREST IT INCREASES THE TEMPERATURE OF THE EARTH IS GLOBAL WARNING. LIKE THAT LOTS OF WARNING ARE THERE.

Answer 9

global warming is an effect when sun ray 's cannot escape from the atmosphere due 2 pollutants like carbon dioxide

Answer 10

That is where the whole world is warned about something. Could be an approaching asteroid, or a giant tsunami.