What accelerates and counteracts global warming?

Global thaw is the worst challenge facing the orbit in the 21st century. Since the second half of the 20th century, there has been explosive summation in orbicular temperature leading to globular warming effect. change magnitude human activities and natural activities get contributed to increase international warming.Global warming has had dissimilar negative effects in the world including melting of polar icing and rise in sea levels, changes in weather pattern with draw out drought and torrents of rain, disappearance of species, and many others. One of the main factors that have contributed to globose warming is release of super acid house gases to the atmospheric state. Release of gases like blow dioxide, coke monoxide, nitrite oxide, and others has contributed to green house effect leading to world-wide warming.Although green house gases has been cited as the main source of global warming, there argon other minor sources which over the time has led to substanti al increase in global temperature. However, there are alternative factors counteracting global warming effects which include aerosols and porn, solar variation, and many others.Alternative causes of global warmingThe most usual indicator used to indicate global warming is the change in average global temperature at the near earths surface. between 1860 and 1900 it is recorded that the earth surface temperature increase by 0.75oC which is approximately 1.35oF.Since 1979, the global temperature at the lower trosphere has recorded an increase of more(prenominal) than 0.22oC. Before 1850, it is believed that temperature was comparatively stable for more than two thousands years and therefore it is the increase in human activities especially industrialization that has led to increase in global temperature. According to recent records, 2005 was recorded as the warmest year ever since the scientific world started keeping reliable records.The main factor contributing to increased global temperature has been release of green house gases to the atmosphere (Pierce and Adams, 2009). It is believed that gases like carbon dioxide, carbon monoxide, nitrite oxide, nitrogen dioxide and others leads to green house effects which increases global temperature.While green house gases contribute to global warming effects, it is believed that there are factors which had previously been thought to cause global warming but counteract global warming effects.Although their contribution may be minimal and difficult to notice, these factors raise led to substantial temperature reduction of the earth over a extensive period of time. Let us look at some of these factors including aerosols and soot which counteract global warming and solar variation which may accelerates global warmingAerosols and soot Aerosols and soot contribute to global cooling done global dimming. This is an effect in which there is gradual reduction in the reach of direct irradiance to the earth that greatly cou nteracts global warming effect.This phenomenon, which has been studied since 1960 take the stand that global dimming, stinkpot contribute to cooling of the earth over a long period of time. Global dimming is mainly caused by aerosols which are produced through volcanic activities and other emissions like sulfur dioxide (Pierce and Adams, 2009).Aerosols produce a cooling effect through increase of reflection of some of the incoming sunlight. through with(predicate) scattering and absorbing of the solar radiation, aerosols have also been shown to have confirmative effects on the net radiation budget.For example sulfate aerosols have been found to form cloud condensation nuclei which lead to clouds having smaller could droplets. The make clouds have been shown to reflect solar radiation when compared to clouds with fewer and large droplets.Soot can lead to cool or warm effect on the cosmos depending on its state whether airborne or deposition. Soot aerosols in the atmosphere abso rb solar radiation thereby cooling the earth since solar radiation heats the atmosphere.However, soot deposited at the glaciers has been shown to heat the earth surfaces. Aerosols have more pronounced effects in the tropical and sub-tropical regions especially in Asia.