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Tag: global warming

The Mythical Dogma of Climate Change Denial

Some actual numbers. (Engineers like things quantified.)

Atmospheric CO2 was identified as a greenhouse gas over 100 years ago. We’ve been measuring it ever since. Technology has allowed us to measure atmospheric CO2 over ever longer time scales. Polar ice cores contain tiny air bubbles that allow us to measure atmospheric CO2 over much longer time periods. We have a clear picture of what the atmosphere has been like over the past several hundred thousand years, and longer. It’s been over 40 years since Hansen made his forecasts before Congress on what would happen in the future with respect to CO2 and climate change, and it’s all come true, and it continues to get worse. Atmospheric CO2 is now at the highest level it’s been for over a million years.

Yet, there are many people who believe that climate change is a hoax. A favorite meme that I see is that volcanoes put more CO2 into the atmosphere than humans. I was listening live when that rumor began.

In the early 90s, I enjoyed listening to Rush Limbaugh. I enjoyed his style of pretending to be highly educated and ridiculing politicians and social movements. I was listening on the day he began his long stretch of daily comments about the eruption of Mt. Pinatubo, in the Philippines. He claimed that it put more greenhouse gases into the atmosphere than humans ever have. I hadn’t considered the numbers involved carefully before so this seemed possible to me. It didn’t occur to me that a famous personality with millions of listeners would just make something up and present it as fact.

Mt. Etna, Paroxysmal Eruption

Silly me. As an engineer, I decided to look into this Mt. Pinatubo thing and see what the numbers really were. If what Rush said was true, there’s nothing we can do about global warming. It’s a natural process and we have to deal with it.

What I found shocked me. Rush’s claim was so far beyond false, so ridiculous, there are no words for it. Not only do humans utterly overwhelm the output of Mt. Pinatubo, but we overwhelm all volcanic activity on the planet combined.

The problem here is comprehending the magnitudes of numbers. There are 7 BILLION people on the planet. Most people have trouble visualizing a thousand. Then imagine a thousand thousands. Most are completely lost at this point, and we’ve only reached one million. Now take the million and imagine a thousand of those, to get to one billion. Then times seven. The Bible said to be fruitful and multiply. Well, we did that. There are 420 million tons of human flesh walking around right now.

If we gave each person on Earth a 10 by 10 foot square of land, we’d occupy 25,200 square miles. Of course, I’ve lost everyone again because few can imagine a space that big. And, we need vastly more space than that in order to grow the food we eat, process our waste, obtain fresh water, and so forth.

Our impact on the planet is far greater than anything I had imagined. We are already using nearly all of the arable land on the planet to grow our food. Yes, we fly in planes and look out over vast spaces. There’s plenty of room. Actually, there isn’t because the majority of that space is not arable land. You can’t grow food in the Rocky Mountains, or Himalayas, or in the desert, Northern Canada, or Siberia.

There are vast regions of the Pacific Ocean that are fished out, stripped down to the bare seafloor, to satisfy our need for protein. Fishing fleets scrape the seafloor itself, leaving nothing but bare sand. When astronauts look down at night, whole regions of the Pacific Ocean are lit up by vast fishing fleets.

So, seven billion people, and half of them cook over open fires. Wood averages 50 percent carbon, by weight. So a pound of wood contains 1/2 pound of carbon. When you burn that pound of wood, each carbon atom combines with two oxygen atoms to form 1.7 pounds of CO2. Burning a pound of wood results in 1.7 pounds of CO2. With 3-1/2 billion people doing this, it adds up fast.

There are more than a billion cars (a thousand millions) driving around every day, burning gasoline. Everyone must eat. We humans slaughter 800 million chickens every day. Imagine the feed and farming required just to raise 800 million chickens every day. Farming burns fuel. Fishing fleets, and a billion cars, and trucks, trains, airplanes, ships, and power generation all burn fuel. Everyone living in northern climates must heat their homes in winter by burning large amounts of some kind of fuel.

Here are the numbers. Total volcanic activity, including undersea volcanoes produces 200 million tons of CO2, annually. Human activity produces 24 billion tons of CO2, annually. It’s not even close. We humans generate 120 times as much CO2 as all the volcanic activity in the world combined. In just two weeks, we generate, as much CO2 from burning wood for cooking, as the sum of all volcanic activity in a year.

To say that one volcano in the Philippines generated more CO2 than humans have ever produced?? Wow. In one fell swoop, I saw Rush Limbaugh for what he is.

Yet Rush’s little prank caught on. Ridiculous as it is, it’s still commonly quoted 25 years later.

Please comment below.

Polar Outbreak, January 2019

The big news right now is the record low temperatures in the Mid- and Upper-Midwest. The Dakotas, Minnesota, Wisconsin, Michigan, and Indiana are experiencing extreme low temperatures and high winds, bringing the chill down to dangerous levels of -40 to -60 degrees Fahrenheit. These conditions are expected to set numerous all-time record lows.

I blogged about this a month ago, on December 28th. It was expected. The only question a month ago was how far south it would go.

You might ask, who am I? I’ve been an amateur meteo guy for over 50 years, I’m an engineer, and from 1998 to 2005 I did marine weather forecasting — guiding yachts at sea, talking them through dangerous weather conditions using marine SSB radio. So, I have some experience with these things and know my way around a 500 millibar chart.

With this polar outbreak, as expected, climate change deniers, including Donald Trump, jumped on this phenomenon with foolish comments like “we need more global warming.”

The key question that a smart person would ask is how did I know a month ago that this was going to happen? I knew because I observed two masses of very warm air in equatorial regions rise to the stratosphere and move north. I knew that those warm air masses would disrupt the circulation around the pole (the so-called Polar Vortex), destabilize it, and push a large mass of extremely cold air out of the polar region and south over Canada to the USA.

What I didn’t know was how far south it would reach. But, about a week ago, it looked like a pair of north-south ridges were forming that would squeeze the cold air mass and vigorously squirt it south, well into the USA. Then, I knew the cold blast would be severe. This squirting effect also meant high winds and severe wind chill — what I call a Blue Screamer. That’s what we’re going to get tomorrow (Wednesday) and into Thursday.

The bottom line here is that the cause of this outbreak is warm air that came from the tropics. Global warming doesn’t mean a perceived increase in warmth. Not yet, anyway. Raising the average global temperature by one degree doesn’t result in feeling warmer all the time. It results in more violent and severe weather, both cold and hot. The amplitudes increase. Temperature swings get wider. The winds become more violent. We’ll set both high and low temperature records as this proceeds.

The workings of Earth’s atmosphere are extremely complex. I know it may seem contradictory, but the next two days will bring us record-breaking cold and high winds — as a direct result of global warming.

Please comment below.

World faces irreversible climate change, researchers warn

The world is facing an increasing risk of “irreversible” climate shifts because worst-case scenarios warned of two years ago are being realized, an international panel of scientists has warned.

Temperatures, sea levels, acid levels in oceans and ice sheets were already moving “beyond the patterns of natural variability within which our society and economy have developed and thrived,” scientists said in a report released Thursday.

The findings came at the end of a three-day conference in Copenhagen, Denmark, where nearly 2,000 researchers gathered to discuss climate change.

See the rest of the story here.

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