How does global warming effect weather?
It is believed that the global mean temperature may rise by 2 degree celcius and sea level by half metre by 2100 A.D.Regional temperature changes may differ substantially from the global mean.Deserts are expected to be hotter.There will be changes in the amount,frequency and intensity of rainfall causing floods in some places and droughts in some other places.There are likely to be some adverse effects on human health partly because of increased heat stress and partly because of infectious diseases. Cities are likely to be more affected because of the increase in the levels of the greenhouse gases in the air immediately above the cities.Greenhouse gases are supposed to contribute more to the global warming.It is estimated that a city of one million people generates 25000 tons of carbon dioxide(an important greenhouse gas) every day.So, they have to face more frequent and more intense heat waves.Several cities situated in coastal regions will be at direct risk from rising sea level.Pola
An increase in global temperatures is expected to cause the sea level to rise, increase the intensity of extreme weather events and change the amount and pattern of precipitation. Other effects of global warming include changes in agricultural yields, glacier retreat, species extinctions and increases in the ranges of disease vectors. Earth’s climate changes in response to external forcing, including variations in its orbit around the sun (orbital forcing volcanic eruptions, and atmospheric greenhouse gas concentrations. The detailed causes of the recent warming remain an active field of research, but the scientific consensus identifies elevated levels of greenhouse gases due to human activity as the main influence. This attribution is clearest for the most recent 50 years, for which the most detailed data are available. In contrast to the scientific consensus that recent warming is mainly attributable to elevated levels of greenhouse gases, other hypotheses have been suggested to expl
