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Causes of Global Warming

Scientists first hypothesized climate change in the late 1800s. The industrialization process involves burning fossil fuels, which produce greenhouse gases. These gases are responsible for a warming episode, which is now known as global warming. It is difficult to understand the exact cause of global warming, as scientists are not entirely sure whether it will be caused by natural climate variability or human activity. Read on to learn more. Global warming is an issue that concerns many people around the world.

Carbon dioxide

Scientists have long debated whether or not carbon dioxide contributes to global warming. The gas is one of the main causes of global warming and can be measured by examining ice core records from the past. Before humans began burning fossil fuels, Earth’s average temperature remained below freezing. In fact, the presence of CO2 in the atmosphere can greatly change the climate of the planet. Scientists have found that the amount of CO2 in the atmosphere has increased over the past century, but they haven’t been able to prove the carbon dioxide has changed the climate.


Methane emissions are increasing. The amount of methane in the atmosphere is increasing at a fast rate, making methane a significant threat to global warming initiatives. Researchers are tracking methane levels and developing computer models to understand the causes of this gas’ rise. While methane emissions are due to direct human activities such as cattle farming, they also occur from wetlands and landfills. According to an atmospheric chemist at the University of Washington, these trends are enigmatic and haven’t been proven to be definitively conclusive.

Natural climate variability

What is the difference between natural climate variability and global warming? Both of these terms are based on the fact that climate can vary over different time scales. While weather is highly variable from day to day, climate is determined by long-term averages over many decades and centuries. Climate variability occurs naturally, and is often attributed to changes in the air and ocean circulation patterns. Global warming, however, is caused by changes in the temperature and precipitation patterns over many decades.

Human activity

The connection between human activity and global warming has long been established. The IPCC report concluded that human activity contributed at least half of the observed increase in global temperatures from 1951 to 2010. This includes natural forcings and internal variability. The scientists believe that human activity has aggravated the problem. But the question remains, to what extent does it affect global warming And how do we determine whether our actions are responsible for it? How can we measure and act to prevent global warming?

Climate models

One common question that arises is whether climate change is due to human emissions. GCMs are designed to simulate the future climate by simulating the emissions of greenhouse gases. These models typically have a horizontal resolution of 100 to 200 km. Combined regional and global models allow a more detailed examination of regional changes. The most comprehensive models run on supercomputers, though some are now available for desktop computers. The results take about six to eight months to realize.

Impacts on humans

The impact of climate change on human health is an ongoing debate, and the Intergovernmental Panel on Climate Change (IPCC) recently released a landmark report. The report shows that the impact of climate change on human health is already outpacing the resilience of human and ecological systems. It also highlights how climate change affects health in terms of vector-borne diseases and mental health. The report highlights that unless we act now to reduce emissions, the impacts of global warming will continue to be devastating.

Climate change on marine species

There are already many questions regarding the effects of climate change on marine species. The researchers compiled a database of marine only species that recorded 1,735 changes in more than a century. These changes were compiled from scholarly peer-reviewed literature and time series averaging 40 years. The researchers found that a common response among species is shifting their geographic ranges. The researchers also found that climate change is likely to make these species more vulnerable to global warming.