Showing posts with label carbon. Show all posts
Showing posts with label carbon. Show all posts

Thursday, November 28, 2019

A BIT OF GOOD NEWS FOR THANKSGIVING

If you've been following the escalating climate crisis, you know that decarbonization of the global economy is a crucial part of achieving a sustainable world. The good news is that the U.S. is moving in the right direction. The latest assessment of how much carbon was injected into the atmosphere from US electricity generation shows that the carbon intensity--pounds of carbon dioxide per MW-hour--dropped 9 percent since this time last year. Total generation fell by 4 percent in the same period. Even better, that's a 40 percent reduction in carbon intensity of power generation in just the last 15 years. 

Carbon emissions per MW-hour in U.S. 2001-2019
Credit: Power Sector Carbon Index, 
Scott Institute for Energy Innovation 

"The U.S. electricity sector is continuing to get cleaner, and both carbon intensity and overall emissions are dropping," said Costa Samaras, assistant professor of Civil and Environmental Engineering at Carnegie Mellon University and co-director of Carnegie Mellon's Power Sector Carbon Index.

The researchers say that this encouraging and continuing trend is due to the decline of coal-powered electricity generation, the increase in power from natural gas, and from renewables such as wind and solar. "We're in the middle of an energy transition right now, and the biggest part of that story in the U.S. is how swiftly coal has been declining over the past decade," said Samaras. "The decline of coal can be attributed to the rise of natural gas, the continued improvement of renewables, and energy efficiency efforts."

There's lots of room for improvement, however. Wind, solar and hydropower still account for less than 20 percent of U.S. electricity, just about equal to nuclear, the other zero-emissions source of power.

The goal, the experts point out, is to continue to produce abundant power while emitting less and less carbon, and also to grow the use of zero- or low-emission electricity in transportation, buildings and industry.

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REA




Thursday, August 30, 2018

CALIFORNIA POWERS AHEAD IN THE FIGHT AGAINST CLIMATE CHANGE

We need all the good news we can find these days, and California has just handed us a climate-change bouquet.

On August 28, 2018, the legislature passed a bill that requires 100 percent carbon-free electricity in the state by 2045. This massive change in the way power is produced in or imported to California will keep 70 million metric tons of greenhouse gases from being spewed into the atmosphere every year, equivalent to taking 12 million cars off the road.


California Wind Farm
a rapidly growing source of clean power
Credit: Creative Commons Zero; Max Pixel


If Governor Brown signs the bill into law, as expected, California will become the largest economy in the world to commit to 100% carbon neutral electricity before mid-century. (Yes! Governor Brown signed the bill into law on September 10, 2018).

Of course, much more than this is needed for the world to meet the goals of the Paris Climate Agreement and keep global temperatures no more than 1.5 or at most 2.0 degrees C (2.7/3.6 degrees F) above pre-industrial levels. Still, it's a giant step in the right direction, and one that we hope many more states, cities, countries, companies and industries will follow--and the sooner the better.

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You can find the text of California Senate Bill 100 here.

Tuesday, July 31, 2018

CALIFORNIA'S ECONOMY BOOMS WHILE ITS CARBON FOOTPRINT SHRINKS

As reported in Grist earlier this month, California's carbon emissions are down to the levels they were way back in the 1990s, while at the same time its economic productivity has soared. According to the state's Air Resources Board, “California now produces twice as many goods and services for the same amount of greenhouse gas emissions as the rest of the nation."

California windfarm--part of the state's energy success story
Credit: Creative Commons Zero--CC0 

If one believes economists and politicians who, like Donald Trump, are still pushing coal or other greenhouse-gas-spewing energy sources, California, which is leading the nation in the transition to renewable energy, should be failing. For those still interested in facts, nothing could be further from the truth. California's per capita greenhouse gas emissions are roughly one-half the US average, yet it produces twice as many goods and services for every unit of energy use.

Kudos to California for leading the way. However, there's still lots of room for improvement. Transportation still relies far too heavily on fossil fuels, and accounts for 41 percent of California's carbon emissions. To tackle this, the state has plans in place to multiply the number of electric vehicles on California's roads 12 times within the next 12 years.

If the state has the same success with that plan as it has had on its overall carbon emissions, it's likely to beat that deadline and still lead the country in terms of economic productivity, not to mention improved quality of life.

What are the rest of the states waiting for?

REA

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Tuesday, August 08, 2017

ORWELL STRIKES AGAIN, THIS TIME AT THE US DEPARTMENT OF AGRICULTURE

In his prescient novel, 1984, George Orwell introduced the world to Newspeak, a minimized and simplified revision of English designed to make nuanced, reasoned, independent thought impossible.

Inspired by our current president and his climate-change denial, the U.S. Department of Agriculture (USDA)--the agency whose mission is to guide and enhance American agriculture, conserve and improve the rural environment, and help feed America and the world--has decided to outlaw phrases such as "climate change," "climate change adaptation," "reduce greenhouse gases," and "sequester carbon." Newspeak is alive and well at the USDA.

Flooding in New Orleans--yet again

Those now-forbidden terms are to be replaced in official communication by what Orwell would call "goodthink"--terms approved by the all-powerful Party. "Climate change" becomes "weather extremes" or "intense weather events," "climate change adaptation" becomes "resilience to weather extremes," while "reduce greenhouse gases" and "sequester carbon" become "build soil organic matter" or the mind-numbing "increase nutrient use efficiency."

Wildfire, Black Forest, Colorado, June 12, 2013
Credit: DoD--photo by Master Sgt. Christopher DeWitt, U.S. Air Force

In Oldspeak--plain old English--it's at least possible to think and speak clearly about the global problem of climate change and ways to minimize or adapt to it. But, in Newspeak, in Trump's Department of Agriculture, that's now a thoughtcrime, or, better yet, simply unthinkable.

The flash drought that's currently decimating the high plains' wheat crop is simply an isolated weather extreme. It can't be linked to the raging wildfires in the Pacific Northwestflooding in New Orleans, the fact that Virginia's Tangier Island is washing away or that Death Valley just experienced the hottest month ever measured anywhere on Earth. The concept that ties these "weather extremes" together no longer exists, at least at the USDA.

You can see this in action at the EPA, where scientists explaining how climate change has added to the destructive power of Hurricane/Tropical Storm Harvey are being accused of politicizing the storm. In other words, understanding is politicizing. Remaining ignorant is the right thing to do.

 Credit: Stephen Bettany

One of the three guiding slogans of the Party in 1984 was "Ignorance is Strength." If that's true, Trump's USDA is certainly flexing its muscles.

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You can read environmentalist Bill McKibben's comments  on this issue here.

You can read about an outbreak of Trump-mandated Newspeak at the Centers for Disease Control and Prevention (CDC) here, or at this URL.Newly banned words and phrases include "vulnerable," "entitlement," "diversity," "transgender," "fetus," "evidence-based," and "science-based." I, for one, start to feel pretty vulnerable when concepts like "evidence-based" and "science-based" are banned. What will replace them? The Republican party line? Trump's latest whim?

Part of the CDC's "Pledge to the American People" is to "Base all public health decisions on the highest quality scientific data that is derived openly and objectively." They should amend that to read, "Base all public health decisions on the current political directives from the President and his appointees, derived behind closed doors to advance a partisan agenda."

And you can see how far this fascist penchant for censoring words and ideas can go in this recent news item about the censorship of words, phrases and internet search terms in China. Just to put the cork in the bottle, they've banned references to George Orwell, 1984 and Animal Farm.

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Thursday, July 28, 2011

Fire threatens the Arctic tundra for the first time in 11,000 years


As reported in the 24 July, 2011 issue of Nature, a research team studied the aftermath of a large, unprecedented wildfire that scorched Alaskan tundra in 2007. Tundra fires, in which the carbon-rich soil actually burns, have been small and infrequent for the last 11,000 years. This fire, however, released a huge amount of carbon into the atmosphere, as much as the entire tundra biome, which stretches across the far north of Alaska, Canada and Eurasia, stores in a year.

You can read more about this fire and its implications for climate change in the Arctic and globally at Suite101.
You can access the abstract of the original Nature article here.

Tuesday, November 02, 2010

Leading geologists warn, "Stop pulling carbon trigger."

The 200 year old Geological Society of London has issued a clear, eminently readable, fact-based statement summarizing what the geological record has to say about climate change. Their understated bottom line is that it would be "unwise" for humanity to continue pouring carbon dioxide into the atmosphere and oceans. Nature ran that experiment 55 million years ago, and the world that resulted would not be suitable for our current civilization. The president of the GSL was a bit more unspoken, writing, "Stop pulling the carbon trigger."

You can read more about this report by clicking here.

Robert Adler
for the institute