“Decoding the Weather Machine” Right now, on Nova

Dunkirk, NY natural gas/coal fired power plant

Located at the eastern end of Lake Erie, the Dunkirk power plant, built in 1950, now burns natural gas, though coal can still be used as a backup fuel. As you can see, the stacks no longer emit that dense smoke plume as in years past.  Coal only produces about 1/2% of New York State’s power.  In 1950, coal power generated nearly 46 percent of electricity in the country, making it the largest power source at the time, according to the Energy Information Administration. However, by 2017 natural gas had overtaken coal , generating about 34 percent of electricity compared to coal’s 30 percent.

Still, natural gas emits some particulates, along with carbon dioxide. While natural gas is a step forward, greenhouse gases will continue to raise global temperatures, most pronounced at the poles and in the seas, at an alarming rate. The computer models all show that the planet’s flora and fauna will be drastically affected by the end of the century. Many coastal cities will be partly under water, agricultural land will be displaced, and summer heat will become dangerously high.

Nova recently aired a two-hour special on climate change, showing each step of how scientists from a range of disciplines have demonstrated how the level of carbon dioxide (and other greenhouse gases such as methane and water vapor) have caused global temperature change over the past 800,000 years.  Scientists have also documented the fossil fuel signature of modern carbon dioxide molecules, showing how they differ from those carbon dioxide molecules produced before the industrial revolution. This is the “smoking gun” proving not only that the global temperature is the hottest in 800,000 years, but that the warming climate is caused by human activity.

The documentary concludes with the political and economic realities, and the policy strategies  needed to address this global threat. Addressing climate change is a formidable challenge not only because of politics and economics, but also because we not only have to stop emitting carbon dioxide, we have to go carbon negative to stop the steady increase of global temperatures.

This not only means producing nearly all of our power from renewable energy, it also means using far less power—leading us into what I call neo-industrialization.  More on this in a future post.

Will we do it?

Even if you disagree with the findings of climate scientists, this Nova special is well worth watching. It is always useful to be familiar with one’s opponents’ arguments and evidence to know what one is refuting.

 

The Natural Environment Aloft

I recently revisited some of my older photos and came across some shots taken from the cockpit of our Piper Arrow during a return flight from Connecticut to Rochester, NY in August 2009. I think these photos are appropriate for this blog since weather is certainly a major component of the natural environment.

This trip found us on an instrument flight plan (permitting properly certified pilots and aircraft to fly inside the clouds) at 10,000 feet. The forecast called for the threat of scattered thunderstorms just to the south of our route, so we decided to launch and remain north of that activity.  However, any pilot worth his salt knows that you want to treat forecasts as something possible–not probable.  In other words–always have an out.

Things were going pretty well for most of the trip. We were well on top of the cloud deck, wpid1152-IMG_0072.jpgand most of the build-ups (containing turbulence and the precursors of thunderstorms) were indeed to our south. However, as we neared Syracuse the build-ups were not only continuing to tower upwards, but they were moving north, threatening our route to Rochester.  You can see what we saw in the photo on the left. It was abundantly clear that it was time to disregard “get thereitis” and ask ATC (air traffic control) for an alternate airport. ATC advised that weather was clear to the north at the not too distant Griffith Field.  We asked for headings and landed without incident, as did at least one other pilot on his way to Philadelphia. We monitored weather from the ground as we sat around discussing weather with other pilots.  As things began to clear late in the day we resumed our flight.

Though the atmosphere was still hot, as you can see in the following photographs, the build-ups were dissipating and most of the clouds were well southeast of our route.

wpid1154-IMG_0148.jpgwpid1156-IMG_0152.jpgThe flight was smooth and we arrived at Rochester around 9:00 PM, several hours later than planned. Pilots, like drivers, often feel a compulsion to push on and hold to the original plan. Unfortunately, this proves fatal in many cases, since planes can be ripped apart in moderate and heavy turbulence, or pilots become disoriented thus losing their ability to interpret their gyroscopic instruments (i.e., they are no longer able to keep the plane flying straight and level).

The next day we learned that intense thunderstorms were accompanied with one-inch hail that battered crops around Syracuse–my decision to fly to an alternate was vindicated!

Given the effects of global warming, thunderstorms are becoming more numerous and intense–posing ever greater threats to aviation (and those on the ground). The next time your flight is delayed, due to thunderstorms, be sure to thank your pilots for using good judgement.