NASA, NOAA, and the NSIDC make a big deal about Arctic sea ice. They show us animations of how the sea ice extent has been in decline since 1979 (the start of the satellite era), and they blame it on human activity and our CO2 emissions.
NASA and NOAA have hidden their satellite data for Arctic sea ice extent for the years before 1979. However, Tony Heller recently found a graph from the 1990 IPCC Climate Assessment Report, which showed satellite data dating back to 1973. It turns out, that the Arctic sea ice extent was lower in the years 1973 – 1978 than it was in the years 1979 – 1990.
Tony also found a 1980 Department of Energy graph depicting Arctic sea ice extent with data dating back to 1920, when they used planes to map out the data. The Arctic sea ice was at its highest extent in the 1920s, but fell to its record low extent by the 1930s, ’40s, and ’50s. Then, the sea ice recovered in the 1960s and 1970s to where it was in the late 1920s.
I do want you to take notice of the x-axis. If you look at the 1990 graph, you will see that the data is in millions of square miles and in anomalies. On the other hand, the 1980 graph is just in millions of square miles. Luckily for us, they are both in millions of square miles. This means, that both graphs would look exactly the same in either anomalies or just millions of square miles.
Once we put the two together, we get something that looks like this…
If we include the current graph as well, we get something that looks like this.
As we can see by the overlapped graphs, Arctic sea ice extent is currently no higher than it was during the early 1930s, late 1950s, and late 1960s.
However, NASA’s method for measuring sea ice by its extent, is not the proper way to measure sea ice. Sea ice extent is a two-dimensional surface, it has no height or weight to it, therefore, extent is not a reliable measurement of how much sea ice there is.
In order to properly measure the sea ice, we need to measure the thickness of it. If we look at the data from PIOMAS, we can clearly see that Arctic sea ice volume (thickness) has not changed since 2006, whereas the extent has slightly declined.
However, I will admit, that a greater extent of something should mean that there will also be a greater thickness or volume. Seasonal snowfall for example, should have a greater depth (thickness), if and only if there is a large snow cover extent for the season. This is because the snow stays in one place, then melts before another snowstorm comes and covers the ground again.
For sea ice however, extent does not really matter because there are winds in the Arctic which push the sea ice around every day. In the past decade or so, there has been a natural shift in the winds, so that the multi-year sea ice gets pushed and compacted around the coast of Greenland. From there, it flows into the North Atlantic Ocean, which results in melting of some of that multi-year sea ice.
The North Atlantic is cooled by the Arctic winds, and the Gulf Stream pulls up warm water from the Gulf of Mexico. This occurs on a daily basis and it affects the climate and global weather patterns on Earth.
Every nine or so years, there is a surge of warm water that is pulled up into the Arctic by the Gulf Stream, known as the Atlantic Climate Pulse. This warm pulse of water comes from the Gulf of Mexico.
These surges of warm water circle the Arctic Ocean and melt some of the sea ice every nine or so years. It has nothing to do with increasing levels of CO2. Meteorologist and Climatologist David Dilley has done a great job investigating this.
We have also gotten bombarded with predictions about how the Arctic is going to melt one year after the other. However, these stories are not new. In fact, they started as early as the 1900s.
In 1922, the Arctic was warming up rapidly and glaciers were disappearing.
In 1923, scientists were saying that the Arctic was warming up at an unheard of rate.
By 1940, the ice in the Arctic was melting rapidly.
In 1952, the Newcastle Morning Herald said that the melting ice caps in the Arctic were a mystery.
In 1958, the New York Times said that the Arctic was melting rapidly.
However, by 1970, the New York Times said that the Arctic sea ice was thicker (which was true), and that a new ice age was on the way.
In December of 2007, many climate alarmists, including BBC News and National Geographic warned us that the North Pole would be ice free by the summer of 2013. That backfired!
In 2009, Nobel Piece Prize Winner, Al Gore, predicted that the Arctic would be ice free by the summer of 2014. That backfired!
In 2013, experts predicted that the Arctic would be gone by 2015. That also backfired!
Enough about the Arctic. We almost never hear about the Antarctic. So, what is going on there? Well, as it turns out, the Antarctic sea ice extent is increasing, while the Arctic sea ice extent is decreasing. The gain in overall Antarctic sea ice outweighs losses on the West Antarctic Ice Sheet according to NASA themselves.
Unfortunately, there is no public data or current measurements of the volume of the Antarctic sea ice. However, it can be assumed, as many scientists say, that the volume of the Antarctic sea ice has also increased since 1979.
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