How Today’s Global Warming Is Unlike The Last 2,000 Years Of Climate Shifts
Today, we are seeing the hottest temperatures. In fact, average global temperatures are increasing every day, which ha caused some record-breaking heat waves. Scientists have said that this universal warming is unique to this era only. The other worrying concern is that the rate at which the temperatures are increasing is rather alarming, exceeding any previous temperature fluctuations. The reports also say that previous temperature fluctuations were mainly due to natural causes whereas now, it’s mainly due to human-caused greenhouse gas emissions.
It has been claimed that the climate fluctuations that have happened in the past 2,000 years were regional, although it was previously thought that they were global. The research also showed that temperatures were hottest at the end of the 20th century.
It has been reported by NASA and the National Oceanic and Atmospheric Administration that 9 of the 10 hottest years on record have happened since 2005, with the last 5 years being the hottest. Scientists have pointed out that it’s mainly human activities that are causing these record-breaking temperatures.
There were a series of powerful volcanic eruptions over the years, which include the eruption of Mouyt Tambora ibn 1815. This is what actually powered the end of the cold period that was known as the Little Ice Age. This period lasted from 1350, all the way to 1850. At the time, such eruptions were thought to be global. However, it was only recently that these eruptions are known to be jus regional.
Researchers found out that way back, before the Industrial Revolution in the mid-1800s, such large scale temperature fluctuations were mainly due to the eruptions of powerful volcanoes. This is why it has already been mentioned that the temperature fluctuations in the past decades were mainly due to natural causes, unlike now when humans are mostly to blame. One great example is that of the five powerful eruptions that happened toward the end of the Little Ice Age. As previously mentioned, these eruptions happened from around 1350 to 1850.
These eruptions resulted in cooling, as well as climate upheaval. Soon after that, there was a period of recovery in which the planet began warming up again. This period happened at the same time as the Industrial Revolution. It is believed that it was then that the greenhouse gas emissions began, which became the primary driver for global warming.
It has been noted that the current warming is rising at a rather unprecedented rate although this is exactly a new idea. In fact, a 1998 report stated that a dramatic upward rise in temperatures at the end of the 20th century, when plotted through time, will actually take the shape of a hockey stick.
Researchers say that new studies are actually a valuable addition. In fact, carefully screened set of data that are of high quality can synthesize, as well as reproduce the past temperatures. However, it should be noted that the database of temperature proxies actually has some holes, mainly in the oceans, as well as the tropical regions. However, this data will not be able to change the underlying storyline but will do a very good job helping scientists to see the global temperature fluctuations clearly.