Later, Roger Revelle, and Hans Suess dispelled this school of thought by discovering that there was a complex chemical buffering system preventing the sea water from absorbing large volumes of atmospheric carbon dioxide. Since then, the potential of humans contributing to global warming was raised (Harding, n.d). Human beings should not be blamed for the ever-increasing levels of global warming. The increase in atmospheric temperatures may be attributed to the more vigorous solar energy’s output. A section of scientists researching on the causes of global warming have postulated that the solar activity have increased rapidly over the past decades as well as the amount of carbon dioxide from the volcanic emissions, and this may have potentially contributed to the increased amount of greenhouse gases in the atmosphere leading to a rise in global warming (Harding, n.d). According to the theory on solar variation, scientists assert that the sun is continually gaining strength and as a result it is as the strongest point as compared to the past years.
The increased amount of radiation from the sun is therefore hypothesized as the contributing factor toward the increasing global warming phenomenon.
The amount of radiant energy that the sun emits continually changes and this phenomenon is known as solar variation. Consequently, according to scientists, the changes in the temperature and climate of the earth have been linked to the solar variation effects (Haldar, 2011). Furthermore there have been scientific works of the researchers highlighting the cause of global warming to be due to sunspots, which are argued to have enhanced global warming. The scientific reports state that the population of sunspots in a particular region directly affects the time span that the nearby earth takes to cool.
The earth primarily gets its energy from the sun. This concept is established in that the earth absorbs approximately two-thirds of the solar flux of the earth. Therefore, solar flux raises the temperature of the atmosphere of the oceans, land, and earth (Haldar, 2011). In addition, the other natural cause of global warming is orbital forcing. Scientific research reports have demonstrated that the slow tilting of the axis of the earth has some considerable effects on the climate of the earth (Gray, et al. , 2010).
When the shape of the orbit of the earth around the sun changes or the axis of the slightly changes, there is a significant possibility that the total amount of the solar energy that the earth receives from the sun would change.
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