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The Dangerous Myth That Climate Change Is Reversible

The CMO (Chief Misinformation Officer) of the climate ignorati, Joe Nocera, has a new piece, “A Real Carbon Solution.” The biggest of its many errors comes in this line:

A reduction of carbon emissions from Chinese power plants would do far more to help reverse climate change than — dare I say it? — blocking the Keystone XL oil pipeline.

Memo to Nocera: As a NOAA-led paper explained 4 years ago, climate change is “largely irreversible for 1000 years.”

This notion that we can reverse climate change by cutting emissions is one of the most commonly held myths — and one of the most dangerous, as explained in this 2007 MIT study, “Understanding Public Complacency About Climate Change: Adults’ mental models of climate change violate conservation of matter.”

The fact is that, as RealClimate has explained, we would need “an immediate cut of around 60 to 70% globally and continued further cuts over time” merely to stabilize atmospheric concentrations of CO2 – and that would still leave us with a radiative imbalance that would lead to “an additional 0.3 to 0.8ºC warming over the 21st Century.” And that assumes no major carbon cycle feedbacks kick in, which seems highly unlikely.

We’d have to drop total global emissions to zero now and for the rest of the century just to lower concentrations enough to stop temperatures from rising. Again, even in this implausible scenario, we still aren’t talking about reversing climate change, just stopping it — or, more technically, stopping the temperature rise. The great ice sheets might well continue to disintegrate, albeit slowly.

This doesn’t mean climate change is unstoppable — only that we are stuck with whatever climate change we cause before we get desperate and go all WWII on emissions. That’s why delay is so dangerous and immoral. For instance, if we don’t act quickly, we are likely to be stuck with permanent Dust Bowls in the Southwest and around the globe. I’ll discuss the irreversibility myth further below the jump.

First, though, Nocera’s piece has many other pieces of misinformation. He leaves people with the impression that coal with carbon capture and storage (CCS) is a practical, affordable means of reducing emissions from existing power plants that will be available soon. In fact, most demonstration projects around the world have been shut down, the technology Nocera focuses on would not work on the vast majority of existing coal plants, and CCS is going to be incredibly expensive compared to other low-carbon technologies — see Harvard stunner: “Realistic” first-generation CCS costs a whopping $150 per ton of CO2 (20 cents per kWh)! And that’s in the unlikely event it proves to be practical, permanent, and verifiable (see “Feasibility, Permanence and Safety Issues Remain Unresolved”).

Heck, the guy who debated me on The Economist‘s website conceded things are going very slowly, writing “The idea is that CCS then becomes a commercial reality and begins to make deep cuts in emissions during the 2030s.” And he’s a CCS advocate!!

Of course, we simply don’t have until the 2030s to wait for deep cuts in emissions. No wonder people who misunderstand the irreversible nature of climate change, like Nocera, tend to be far more complacent about emissions reductions than those who understand climate science.

The point of Nocera’s piece seems to be to mock Bill McKibben for opposing the idea of using captured carbon for enhanced oil recovery (EOR): “his answer suggests that his crusade has blinded him to the real problem.”

It is Nocera who has been blinded. He explains in the piece:

Using carbon emissions to recover previously ungettable oil has the potential to unlock vast untapped American reserves. Last year, ExxonMobil reported that enhanced oil recovery would allow it to extend the life of a single oil field in West Texas by 20 years.

McKibben’s effort to stop the Keystone XL pipeline is based on the fact that we have to leave the vast majority of carbon in the ground. Sure, it wouldn’t matter if you built one coal CCS plant and used that for EOR. But we need a staggering amount of CCS, as Vaclav Smil explained in “Energy at the Crossroads“:

Sequestering a mere 1/10 of today’s global CO2 emissions (less than 3 Gt CO2) would thus call for putting in place an industry that would have to force underground every year the volume of compressed gas larger than or (with higher compression) equal to the volume of crude oil extracted globally by [the] petroleum industry whose infrastructures and capacities have been put in place over a century of development. Needless to say, such a technical feat could not be accomplished within a single generation.”

D’oh! What precisely would be the point of “sequestering” all that CO2 to extract previously “ungettable oil” whose emissions, when burned, would just about equal the CO2 that you supposedly sequestered?

Remember, we have to get total global emissions of CO2 to near zero just to stop temperatures from continuing their inexorable march toward humanity’s self-destruction. And yes, this ain’t easy. But it is impossible if we don’t start slashing emissions soon and stop opening up vast new sources of carbon.

For those who are confused on this point, I recommend reading the entire MIT study, whose lead author is John Sterman. Here is the abstract:

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Australian Sunshine Illuminates The Path Toward Massive Solar PV Growth

Global solar insolation average. Notice bright red oval on lower right. (Credit Mines ParisTech/Armines 2006)

Australia is climate change’s canary in a coal mine. It has been suffering heat waves, floods, and wildfires in a climate-fueled “angry summer” that demonstrates how critical reducing carbon emissions really is.

Australians are finding ways to use the sun’s energy to reduce fossil fuel consumption. According to a new report, Australia’s solar photovoltaic market could reach 10 gigawatts in five years:

The Australian solar PV market could tip the 10,000 mewagatt (10 gigawatt) mark as early as 2017, and could reach the “saturation” levels for owner-occupied houses in many areas in coming years, according to a new report.

The five-year forecast prepared by leading market analysts Sunwiz and Solar Business Services says that the Australian solar PV market – currently at 2.5GW – will likely grow to between 6GW and 10GW by 2017.

The actual outcome will depend on the speed of the growth in the largely untapped commercial sector, the pace of large, utility-scale solar farms, and the industry’s ability to penetrate more challenging parts of the residential sector.

That “saturation rate” has already been achieved in some areas of the owner-occupied residential sector — reaching 90 percent in some localities. Nationally, the average penetration rate is 20 percent. Adding apartment buildings into the mix, this share drops to 10 percent, and it is this rental market that offers the most promise for growth in solar installations.

You can see the prime driver of solar PV installation in Australia here:

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NASA’s Startling Satellite Data Shows Massive Drop In Mideast Freshwater Reserves During Warming-Driven Drought

Variations in total water storage from normal in the Tigris and Euphrates river basins (from 1/03 through 12/09), as measured by NASA’s GRACE satellites (Full image here).

By Alan Buis, Steve Cole, and Janet Wilson, via NASA

A new study using data from a pair of gravity-measuring NASA satellites finds that large parts of the arid Middle East region lost freshwater reserves rapidly during the past decade.

Scientists at the University of California, Irvine; NASA’s Goddard Space Flight Center in Greenbelt, Md.; and the National Center for Atmospheric Research in Boulder, Colo., found during a seven-year period beginning in 2003 that parts of Turkey, Syria, Iraq and Iran along the Tigris and Euphrates river basins lost 117 million acre feet (144 cubic kilometers) of total stored freshwater. That is almost the amount of water in the Dead Sea. The researchers attribute about 60 percent of the loss to pumping of groundwater from underground reservoirs.

The findings … published Friday, Feb. 15, in the journal Water Resources Research, are the result of one of the first comprehensive hydrological assessments of the entire Tigris-Euphrates-Western Iran region. Because obtaining ground-based data in the area is difficult, satellite data, such as those from NASA’s twin Gravity Recovery and Climate Experiment (GRACE) satellites, are essential. GRACE is providing a global picture of water storage trends and is invaluable when hydrologic observations are not routinely collected or shared beyond political boundaries.

GRACE data show an alarming rate of decrease in total water storage in the Tigris and Euphrates river basins, which currently have the second fastest rate of groundwater storage loss on Earth, after India,” said Jay Famiglietti, principal investigator of the study and a hydrologist and professor at UC Irvine. “The rate was especially striking after the 2007 drought. Meanwhile, demand for freshwater continues to rise, and the region does not coordinate its water management because of different interpretations of international laws.”

Famiglietti said GRACE is like having a giant scale in the sky. Within a given region, rising or falling water reserves alter Earth’s mass, influencing how strong the local gravitational attraction is. By periodically measuring gravity regionally, GRACE tells us how much each region’s water storage changes over time.

“GRACE really is the only way we can estimate groundwater storage changes from space right now,” Famiglietti said.

The team calculated about one-fifth of the observed water losses resulted from soil drying up and snowpack shrinking, partly in response to the 2007 drought. Loss of surface water from lakes and reservoirs accounted for about another fifth of the losses. The majority of the water lost — approximately 73 million acre feet (90 cubic kilometers) — was due to reductions in groundwater.

“That’s enough water to meet the needs of tens of millions to more than a hundred million people in the region each year, depending on regional water use standards and availability,” said Famiglietti.
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California To Other 49 States: Can You Match Our Clean Energy Economy?

While the prospects of comprehensive energy legislation remain grim in Washington, real action to address climate change and grow the clean economy is being taken on the state level.

California in particular is a shining example of state-based leadership on climate, having established its own cap-and-trade mechanism — a key element in the Global Warming Solutions Act of 2006 (also known as AB 32) — that will soon be linked with the Province of Québec which will decrease overall greenhouse gas emissions and provide greater flexibility to California businesses. The state also has a Renewable Portfolio Standard of 33 percent by 2020 (the state utilities have already met 20 percent of its electricity needs through renewables), and a net metering program allowing customers to receive financial credit for power generating by their onsite system.

Thanks to the foresight of California policymakers and ample natural resources, the state leads the nation in solar projects, solar megawatts installed, and the average cost per watt of solar. In 2011, $1.9 billion was invested in the state to install solar on homes and businesses, and there are currently more than 1,500 solar companies working throughout the manufacturing chain in California. California even ranks second in wind installation, while also leading the nation in most wind capacity installed in 2011.

Clearly, Californians have much to be proud of when it comes to taking strong action to reduce carbon emissions and fighting the urgent threat of climate change.

This week, Southern California energy providers came to DC to highlight the state’s great achievements and recommend action that could be taken at the federal level needed to maintain long term energy reliability for California while at an event hosted by the Los Angeles Area Chamber of Commerce. The panelists called for three specific items of legislation that federal lawmakers can enact to not only support California policies, but create economic and environmental benefits for the entire country:

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