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One of the biggest problems of today is climate change. However, the problem of the climate in which we live should not be underestimated, in fact, there have been major climate changes in the history of the country that are not the result of this. However, it can provide information about the present.
Therefore, you will find this article will tell you about the major climate changes in the history of the world and their importance.
What is Climate Change?
Global or regional climate change, especially in the middle of the 20th century, is caused by an increase in carbon dioxide in the atmosphere caused by the use of fossil fuels.
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Types of Climate Change
Before we can write a book, we need to understand what climate change is. Strictly speaking, climate change is a significant change in the composition of the climate over a long period of time (decades to centuries).
On the other hand, there have been many climate changes in the history of the world, and these changes have been studied by the science of paleoclimatology, whose job is to study the features of the Earth’s climate at that time. Currently, climate change can be classified into two categories:
Past Climate Change: A series of climate changes characterized by cold and heat waves.
Current Climate Change: Characterized by an increase in global average temperatures.
When Earth formed 4.6 trillion years ago, the sun emitted less radiation than it does today. And the equilibrium temperature is -41°C. We can therefore imagine that it was very cold at this stage and therefore later reproductive life was impossible at that time.
Major Climate Change in Earth’s History
Examination of glaciers and marine sediments led to the conclusion that there were periods in climate history when high concentrations of greenhouse gases, including carbon dioxide and methane, were recorded in the atmosphere, indicating the ultra-modern times of that time.
Among the consequences of this climate change, we can point to a significant increase in temperature, the intensity of extreme events such as droughts and floods, depending on the land area, a rise in sea level, a decrease in the thickness of the ice surface, and an increase in.
In changes in water temperature and biogeochemical cycles. These all affect very small or very rich ecosystems and species, depending on their characteristics, but many of the species that are adversely affected are disappearing.
Oxygen in Atmosphere | Climate Change
With the advent of cyanobacteria, aerobic photosynthesis began, a process by which organisms can fix carbon dioxide and release oxygen. Before the advent of cyanobacteria, there was no free oxygen in the atmosphere. Thus, the concentration of carbon dioxide in the atmosphere decreases and aerobic organisms appear.
The whole earth became a tropical climate and dinosaurs appeared. Global warming is believed to be caused by high concentrations of carbon dioxide released into the atmosphere due to accelerated rock erosion.
Paleocene-Eocene Thermal Maximum
It is also known as the Early Eocene Thermal Maximum or the Late Paleocene Thermal Maximum. This is a sudden increase in temperature, exactly a 6°C increase in the average temperature on Earth (about 20,000 years, a short time before global climate change).
This changed the circulation of the oceans and atmosphere and led to the extinction of many species. As the name implies, it marks the end of the Paleocene and the beginning of the Eocene.
Pleistocene Ice Age
One of the biggest climate changes in history was the Ice Age, when Earth’s temperature dropped, leading to the formation of continental ice sheets, coastal ice, and glaciers. It is estimated that there have been four previous major ice ages, the last being the Pleistocene Ice Age. It is believed to have existed from the Quaternary period, 2.58 million years ago, to the present day.
Minimum Maunder | Climate Change
This corresponds to the period from 1645 to 1715 when the sun almost disappeared from the surface of the Sun. As a result, solar radiation is reduced and winters are colder.
Beginning at least in Egypt around 1300 BC, it was thought that there were six smaller ones like the sun. C., in the end, there is the most Maunder.
In all these cases, the most important consequence is the decrease in global temperature, which means that species cannot adapt to winter, and the decrease in population affects the environment as a whole, and even some of them lead to the extinction of species.
Republics and Empires are not immune to Change
Find fossils, interpret remains, and collect traces of prehistoric climates… Smoke trails from the moon are complex. However, everything changed with the discovery of writing, especially papyrus and parchment. Then history starts talking about the future. If we want to know what happened to ancient Greece or how the Roman Empire disappeared, all we have to do is read.
The last ten years of the Roman Republic were marked by social unrest. The political strife that followed the assassination of Julius Caesar gave way to the Empire, which coincided with winter, bad harvests, and famine in almost every area under Roman control. These numbers are only known from ancient conservation history. Amid the political turmoil, famine and social unrest drove the final nail into the Republic’s coffin.
Now we are at 43 and 42. c. We have known the coldest for the past 2500 years. A study published in July 2020 linked the cold to two major eruptions at Alaska’s Okmok volcano. Ash blocks the sun for years, causing widespread cooling in the northern hemisphere; Precipitation patterns are also changing.
The empire that emerged after the fall of Rome could not survive the changing climate. Third century AD In the Fayoum area of Egypt, there was a Roman warehouse, and the Nile River became the largest agricultural center of the empire.
However, around the year 260 d. C.’s crops began to fail and grain production shifted to raising berries, which were more resilient. Conflicts over access to water are common, and reduced incomes lead to lower taxes and mass northward migration. The area would remain empty for years.
Again, climate change is to blame for all of this. During these years, several events (still unknown, although there may have been other volcanic eruptions) changed the monsoon pattern that supplies water to the Upper Nile each year. The change was also sudden (according to a study published in November), resulting in a drought.
Despite rapid changes and their causes, climate instability is not unlike our time. Climate change has shaped our history. Lessons have been gathered over thousands of years about the consequences of the climate crisis. Yes, things are very different these days. First, we have a climate crisis, we saw it coming and we can stop it. It is not caused by volcanic changes or ocean currents. Homo sapiens himself is testing his ability to adapt to climate change.
I hope this information helps you learn more about large-scale climate change throughout Earth’s history.
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