How Long Was the Hockey Stick?
The "Hockey Stick" graph is a chart that shows the average global temperature over the past 1,000 years. It was first published in 1998 by Michael Mann, Raymond S. Bradley, and Malcolm K. Hughes, and it has since become one of the most iconic images in climate science. The graph shows a sharp upward trend in temperatures over the past 100 years, which is consistent with the theory that human activity is causing global warming.
The nickname "Hockey Stick" comes from the shape of the graph, which resembles the blade of a hockey stick. The long, straight handle of the stick represents the relatively stable temperatures over the past 900 years, while the sharp upward curve at the end of the stick represents the rapid warming that has occurred over the past 100 years.
The Hockey Stick graph has been used as evidence in support of the theory that human activity is causing global warming. However, it has also been criticized by some scientists, who argue that the graph is too simplistic and that it does not take into account all of the factors that can affect global temperatures.
Despite the controversy, the Hockey Stick graph remains one of the most important pieces of evidence in the debate over climate change. It is a powerful visual representation of the long-term trend of global warming, and it has helped to raise awareness of the issue.
Related Questions:
- What is the "Hockey Stick" graph?
- A chart that shows the average global temperature over the past 1,000 years.
- What does the nickname "Hockey Stick" refer to?
- The shape of the graph, which resembles the blade of a hockey stick.
- Who first published the Hockey Stick graph?
- Michael Mann, Raymond S. Bradley, and Malcolm K. Hughes.
- What is the significance of the Hockey Stick graph?
- It is a powerful visual representation of the long-term trend of global warming.
- Has the Hockey Stick graph been criticized?
- Yes, some scientists argue that it is too simplistic and that it does not take into account all of the factors that can affect global temperatures.
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