Showing posts with label global warming. Show all posts
Showing posts with label global warming. Show all posts

Tuesday, March 9, 2010

Global warming has slowed only briefly

Science starts with a hypothesis. The hypothesis I would take from Lorne Gunter's article Gore v. Gunter (which I will not give the honor of a link from here) is that global warming has stopped. This is a testable hypothesis. If it is true, we will see several indicators: earth's albedo (the amount of light reflected into space) should be increasing. Gases such as carbon dioxide and methane (which is several times more potent at trapping heat in the atmosphere) should also be on the decline. There are other indicators, but these will suffice to make my point.

1. Albedo is decreasing because glaciers are melting for the first time in thousands of years.
2. Albedo is increasing because contrails reflect light.
Experimentation has shown that 1 is more significant than 2.

3. Carbon dioxide emissions continue.
4. Carbon dioxide sinks (algae in the ocean, for example) are becoming saturated
5. Glaciers, as they melt, are releasing methane.

Given these facts, unless you have found some magical stash of planetary coolant, I'd say our Toyota may have run out of gas, but I see a cliff right ahead, so it's liable to pick up speed on the way down. An argument I heard against global warming 15 years ago was, "The Earth will take care of itself." It will, but it doesn't have any special concern for humans.

Before you go bashing science in the media, best check with a real scientist or two to find out how science is really done.

Wednesday, March 21, 2007

Save the planet: fuel economy gauge

Here's an idea: mandate a fuel economy gauge next to the speedometer for all cars. The display on a gasoline car would show mpg, while the display on an electric car would show mi/kJ or some such. With fuel efficiency staring people in the face while they drive, they might be more keen to shut off an idling car and drive less aggressively! [DIY]

From Environmental Defense:

Check out our list of facts on cars and global warming.
Then, take action in support of national global warming action!

232 million - Number of registered vehicles in the U.S. That's almost one per person!

600 gallons - Average amount of gasoline consumed by one U.S. car each year.

12,000 pounds - Amount of carbon dioxide emitted from one U.S. car each year.

240 - Number of trees needed to absorb the 12,000 pounds of carbon dioxide emitted from one U.S. car each year.

2.7 trillion - Number of miles U.S. cars and light trucks traveled in 2004. That's the equivalent of taking 10 million trips to the moon.

5 - Percent U.S. population is of the world population.

30 - Percent of world's automobiles in the United States.

45 - Percent that the United States contributes to the world's automotive carbon dioxide emissions.

4 - Number of car companies that support a national cap on global warming emissions. They are Ford, General Motors, DaimlerChrysler and Toyota.

0 - Number of bills passed by Congress to cut global warming pollution.

Tell Congress to do something about fuel economy.

Saturday, February 3, 2007

Save the planet - ride a bus


In the words of yesterday's N&O headline, "Panel Blames Warming on Man." Well arrest him, already! Seriously - we have known for years that there was some dramatic climate change underway, and the primary controversy has been due to corporate-funded disinformation campaigns. ($16 million in financing for the campaigns and Exxon Mobil is frequently mentioned among the perpetrators.) But what kind of change is it?

2006 was one of the hottest years on record, state by state[1]. Man is responsible for the change[2]. If you shut down the Gulf Stream by melting the Greenland ice sheets, the whole North Atlantic area (England and Europe come to mind) suddenly drops 9 degrees C[3]. Melt all that ice and where does it go? Into the ocean, of course, raising the sea level and changing the coastline dramatically[4]. Is it any wonder I don't live on today's coast?

We need to undertake a coordinated effort to address our greenhouse gas emissions. The Kyoto Protocol is one such effort, to which most countries agreed, with Australia and the United States the most notable shirks and among the worst polluters, too. The United States is 17th in the world in per-capita oil consumption [5] and first in oil consumption as a country [6]. We need to figure out how to conserve. Hint: not by using hydrogen fuel cells. They are hopelessly inefficient, especially when charged by electricity from a coal or oil generating plant.[7] We need to genuinely conserve, and one of the best ways we can do that is by public transit.

I had an interesting conversation with a staunch Republican friend of mine not too long ago about the price of gas. My premise, for the sake of the discussion, was that gasoline should be taxed to a cost of $5/gallon (brought there gradually), and the revenue generated should be put into establishing usable public transit systems. Her argument was that it was a regressive tax unfairly targeting the poor. (That and taxes and government are bad in the first place.) What if the public transit were genuinely efficient? Then the automobile would become a rich man's convenience and the train, bus, and other transit would be for the common folk. A subway ride in Mexico City costs 15 cents. Why not have bargains like that here?

When I lived and worked on a bus route, I took the bus to work. With my present job location, it would turn a 15 minute commute into a 1-hour ordeal to take the bus, so I drive or ride my bicycle. Biking and public transit is my personal answer to the climate change problem, that and NC Green Power to offset CO2 emissions from my electricity usage. What do you do?

Most bus systems have their schedules online for easy reference. Some, like TTA, even have door-to-door routing. You tell it when and where you want to go, and it tells you which buses, which changes, and even how long you'll spend walking. TTA's routing system even includes routing with the various city transit systems in the area. Very convenient.