The early months of 2021 saw a series of heatwaves sweep across many countries and regions. These sweltering conditions posed a major risk to both public and environmental health, leading to a common question being asked: Is this heatwave because of global warming?
To answer this question, it is important to recognize that global warming is a long-term trend, not a one-time event. Changes to global temperatures, among other factors, have been slowly accumulating since the late 19th century and continue to do so today. According to scientific research, the western United States has experienced a warming trend of 2.5°F over the past century.
At the same time, it is also important to recognize that various forms of weather, such as heatwaves, have both natural and human-induced causes. Short-term heatwaves are caused by jet streams—gaps in the atmosphere that allow hot air to linger in a single area for an extended period of time. Climate researchers hypothesize that global warming may be affecting the jet stream, causing more frequent and intense heatwaves.
In support of this claim, a study from the National Academy of Sciences found that the Western Pacific warm pool has significantly increased in temperature since 1950, alongside the drastic rise in global surface temperatures. The added heat is theorized to be a major factor in the emergence and persistence of extreme weather events such as heatwaves.
It is clear, then, that global warming is playing a role in the current heatwave, although it is not the only factor. Other human activities, such as burning fossil fuels, are also contributing to hotter temperatures. Furthermore, although climate change is indeed a global problem, some regions are more impacted than others. The American West Coast experienced significant disruptions in its climate system over the past few decades, leading to the intensified heatwave events of 2021.
It is likely that we will continue to see heatwaves become more of an issue as the earth continues to get warmer. Limiting further human emissions would be an important step in limiting the intensity and duration of future heatwaves. Additionally, individuals can take it upon themselves to reduce their own emissions at the local and national level. By conserving energy, eating mostly plant-based foods, and recycling whenever possible, each person can contribute to solving this global issue.
Ultimately, there is a need for immediate action on the part of both governments and individuals in order to combat the increasing effects of climate change. Heatwaves, like the one seen in 2021, are a sign of the harsh realities that are to come if climate change and global warming are not addressed proactively and with the proper resolve.
Is This Heatwave Because Of Global Warming
