The debate on the role global warming plays in causing a heat wave has been fueled by science and politics alike. As scientists explore the underlying causes of the rising temperatures, citizens of countries around the world are bracing for the increasing frequency and intensity of extreme weather patterns. It is well documented that the combustion of fossil fuels leads to emissions of greenhouse gases, which in turn trap heat in the atmosphere and elevate the ambient temperature.
Evidence of global warming in this century can be seen in a variety of ways. Over the past 150 years, the average global temperature has increased by approximately 1.2 degrees Celsius. Additionally, it is estimated that 18 of the 19 warmest years have occurred since the year 2000. The historic levels of greenhouse gases in the atmosphere have been linked to this warming trend, with human activities cited as the primary cause. For example, burning fossil fuels releases carbon dioxide and other gases into the atmosphere.
At the same time, there is no definitive answer as to whether or not the increasing frequency and intensity of heat waves are caused by global warming. It is important to consider both natural and human factors when discussing the causes of the heat wave. Geologists have observed that cyclical climate patterns, such as El Niños, and volcanoes can also contribute to the phenomenon. Additionally, the variation in cloud cover, ocean currents, and other natural factors can play an important role in driving the temperatures to extraordinary levels in certain parts of the world.
However, experts are now finding that rising concentrations of greenhouse gases are significantly impacting global temperatures. An analysis from the Intergovernmental Panel on Climate Change found that the intensity of heat waves in the northern hemisphere has doubled since the 1950s. The organization noted that the overall frequency and intensity of extreme weather events have increased since the 1990s, including heat waves, storms, floods and droughts.
Another factor to consider is the role of human behavior when evaluating factors that might contribute to global warming. Global urbanization generates heat, which can contribute to heat waves in urban areas. Furthermore, deforestation leaves fewer trees to absorb carbon dioxide and thus reduce concentrations of heat in the atmosphere. Finally, fuel efficient transportation and an emphasis on renewable energy could reduce the levels of carbon dioxide and other greenhouse gases in the atmosphere, thereby decreasing the likelihood of future heat waves.
In summary, there is no single contributing factor when it comes to the causes of heat waves. While the combustion of fossil fuels is known to release harmful gases into the atmosphere, there are also a range of other elements that can result in a rise in temperature. If society takes the necessary steps to reduce greenhouse gas emissions, curb deforestation and pursue renewable energy, it could reduce the risk of heat waves and other extreme weather events caused by global warming.
