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Posts Tagged ‘U.S.’

U.S. Atmospheric Methane Concentrations Are 50% Higher Than Previously Thought

In Uncategorized on November 26, 2013 at 2:43 pm

Oldspeak: “Tick, tick, tick, tick….. in the wake of recent news that there are multiple and one ginormous  methane seeps venting  from the bottom of the oceans off the coast of the U.S. into the atmosphere, of ponds in the Canadian arctic venting significant and previously unknown amounts methane into the atmosphere, and 2 times as much methane venting from the arctic methane time bomb a.k.a. the East Siberian Arctic Shelf that will affect the entire globe venting 20 million tons per year of methane into the atmosphere, this is not good news. This irreversible feedback loop is ACCELERATiNG as a result of human activity.” -OSJ

By Becky Orskin @ Live Science:

Thanks in large part to gas wells and cow farms, the United States is spewing 50 percent more methane, a potent greenhouse gas, than previous estimates have measured, according to a new study.

For the study, published Monday (Nov. 25) in the journal Proceedings of the National Academy of Sciences, researchers from universities and government labs fanned out across the United States in 2007 and 2008 and measured levels of methane gas in the air. Though methane breaks down in the atmosphere after only 10 years, faster than carbon dioxide, it’s about 30 times more effective than carbon dioxide at trapping heat escaping the Earth — the greenhouse effect that leads to global warming.

Total methane emissions in the United States were 1.5 to 1.7 times higher than amounts previously estimated by the Environmental Protection Agency and by the International Emissions Database for Global Atmospheric Research (EDGAR), respectively, the study found.

The difference between the estimates comes from ways the various groups calculate methane emissions, the researchers said in a statement. The U.S. EPA and EDGAR count total emissions from the source, such as each cow and each unit of coal and natural gas sold in the country. The new study tracked actual methane emissions in the air, the scientists said.

“The bottom-up and top-down approaches give us very different answers about the level of methane gas emissions,” lead study author Scot Miller, a graduate student at Harvard, said in the statement. “Most strikingly, our results are higher by a factor of 2.7 over the south-central United States, which we know is a key region for fossil-fuel extraction and refining. It will be important to resolve that discrepancy in order to fully understand the impact of these industries on methane emissions.”

Man-made sources contributed about 60 percent of the methane, and 40 percent of the gas was from natural sources such as wetlands, the study concluded. Nearly 25 percent of the total man-made methane emissions were from Texas, Oklahoma and Kansas. [Greenhouse Gases: The Biggest Emitters (Infographic)]

In California, a related study led by Lawrence Berkeley National Laboratory found the state’s total methane emissions are 1.3 to 1.8 times higher than the California Air Resources Board estimate. Those findings were published Oct. 3 in the Journal of Geophysical Research.

The air samples were collected by aircraft and from instruments stationed on telecommunications towers. The research team is now tracking present-day methane levels to measure changes related to the boom in U.S. oil and gas production.

Becky Oskin
Becky was a science reporter at The Pasadena Star-News. She has freelanced for New Scientist and the American Institute of Physics and interned at Discovery News. She earned a master’s degree in geology from Caltech, a bachelor’s degree from Washington State University, and a graduate certificate in science writing from the University of California, Santa Cruz. To find out what her latest project is, you can follow Becky on

TEPCO Readies For Extremely Dangerous, Never Before Attempted Operation To Remove 400 Tons Of “Spent” Nuclear Fuel At Fukushima

In Uncategorized on November 4, 2013 at 3:34 pm

Poolside: The spent-fuel pool of reactor 4 at the crippled Fukushima No. 1 nuclear power plant

Oldspeak: “The operation to begin removing fuel from such a severely damaged pool has never been attempted before. The rods are unwieldy and very heavy, each one weighing two-thirds of a ton, The worst-case scenario could play out in death to billions of people. A true apocalypse. It will be one of the worst, but most important jobs anyone has ever had to do. And even if executed flawlessly, there are still many things that could go wrong.Christina Consolo, fallout researcher

“Should the attempt fail, a mishandled rod could be exposed to air and catch fire, resulting in horrific quantities of radiation released into the atmosphere. The resulting radiation will be too great for the cooling pool to absorb as it simply has not been designed to do so.

In the worst-case scenario, the pool could come crashing to the ground, dumping the rods together into a pile that could fission and cause an explosion many times worse than in March 2011.” -RT

The complex has recently seen a series of setbacks, including highly toxic water gushing from storage tanks into the Pacific. The incidents, many of them caused by human error, have added to concerns about operator Tepco’s ability to safely dismantle the No. 1 plant” –Japan Times

“Ummm…. this can’t be good. Let me get this straight. TEPCO is going to attempt an extremely dangerous and never before tried operation that it originally planned to do in 2 years in 1 YEAR? So they’re going to rush through the job, and expect everything to go off (pun intended) without a hitch?! Given its record of mismanagement, unpreparedness, false information, human error and breathtaking incompetence handling this ongoing and ever worsening ecological and environmental catastrophe, i don’t understand why  responsibility is still being left to TEPCO to do anything!  Why would anyone with knowledge of the situation have ANY confidence that TEPCO could execute this operation successfully?!?! Sure they’re accepting international help, 2 years later, but this is an unprecedented event. A triple-meltdown, where nuclear cores have been lost, and there is no existing means to contain the perpetual radiation release. Expect a potentially life altering fuck up to kill billions of people. There are just too many ways this shitshow can go sideways real fast. ” –OSJ

Related Story

U.S. To Help With No. 1 Shutdown

Dangerous Operation Planned For Fukushima Plant

By RT:

Fukushima operator TEPCO is getting ready for its toughest and the most dangerous clean-up operation. In November it will try to remove 400 tons of spent fuel from plant’s Reactor No. 4. But even a little mistake may result in a new nuclear disaster.

The operation is scheduled to start in the beginning of November and be completed by around the end of 2014.

Under normal circumstances, the operation to remove all the fuel would take about 100 days. TEPCO (Tokyo Electric Power Co) initially planned to take two years, but reduced the schedule to one year in recognition of the urgency, as even a minor earthquake could trigger an uncontrolled fuel leak.

During this period TEPCO plans to carefully remove more than 1,300 used fuel rod assemblies, packing radiation 14,000 times the equivalent of the Hiroshima nuclear bomb, from their cooling pool.

The base of the pool where the fuel assemblies are situated is 18 meters above ground and the rods are 7 meters under the surface of the water.

TEPCO’s first task is to remove the debris from the Reactor No. 4 fuel pool.

Then, one by one, the fuel rods will be removed from the top store of the damaged building using a crane suspended above the crippled reactor.

Installation status of fuel removal cover of Unit 4 (Image from tepco.co.jp)Installation status of fuel removal cover of Unit 4 (Image from tepco.co.jp)

Previously a computer-controlled process, this time it has to be done completely manually. And this is what makes this removal operation extremely dangerous.

The fuel rods must be kept submerged and must not touch each other or break.

“The operation to begin removing fuel from such a severely damaged pool has never been attempted before. The rods are unwieldy and very heavy, each one weighing two-thirds of a ton,” fallout researcher Christina Consolo earlier told RT.

Should the attempt fail, a mishandled rod could be exposed to air and catch fire, resulting in horrific quantities of radiation released into the atmosphere. The resulting radiation will be too great for the cooling pool to absorb as it simply has not been designed to do so.

In the worst-case scenario, the pool could come crashing to the ground, dumping the rods together into a pile that could fission and cause an explosion many times worse than in March 2011.

“The worst-case scenario could play out in death to billions of people. A true apocalypse,” Consolo said.

Reactor No. 4 contains 10 times more Cesium-137 than Chernobyl did. This lets scientists warn that in case of another nuclear disaster, it will be the beginning of the ultimate catastrophe of the world and the planet.

“It will be one of the worst, but most important jobs anyone has ever had to do. And even if executed flawlessly, there are still many things that could go wrong,” Consolo said.

The World Nuclear Report, released in July 2013, said “the worst-case scenario” will require evacuation of up to 10 million people within a 250-kilometer radius of Fukushima, including a significant part of Tokyo.

Although some experts are skeptical, TEPCO is confident the operation will be a success. Last year two fuel rods were successfully removed from the pool in a test operation, but back then rod assemblies were empty and posed a far smaller threat.

The operation will be just one installment in the decommissioning process for the plant, and is forecast to take about 40 years and cost $11 billion.

TEPCO, responsible for the clean-up, is struggling to cope with the aftermath of the nuclear disaster, but with the crisis over radiation-contaminated water at the plant, it has been criticized for its ad hoc response to the disaster. In August TEPCO pleaded for overseas help to contain the radioactive fallout, after 18 months of trying to control it internally.

The Japanese government was also ordered to take a more active role in controlling the overflow of radioactive water being flushed over the melted reactors in Units 1, 2 and 3 at the plant.

Three of the Fukushima plant’s nuclear reactors were damaged by an earthquake-triggered tsunami on March 11, 2011, which led to a nuclear disaster. The plant has been accumulating radioactive water ever since. The government imposed a 20-kilometer ‘no-go’ zone around the plant area.

West Coast Of North America To Be Hit Hard By Fukushima Radiation That Could Be 10 Times Higher Than In Japan

In Uncategorized on August 27, 2013 at 5:29 pm

https://i0.wp.com/iprc.soest.hawaii.edu/news/marine_and_tsunami_debris/2011/11_04_maximenko_tsunami_debris/map_of_trajectory_med.jpgOldspeak” This ongoing and uncontrolled ecological catastrophe continues, with no end in sight. Untold billions of tons of water are being dumped into the Pacific ocean by the Japanese. The contamination is expected to get worse as time passes and impact Baja California and other North American west coast hotspots. And no one knows how to fix it. “Last year, scientists from the National Oceanic and Atmospheric Administration’s (NOAA) Pacific Marine Environmental Laboratory and 3 scientists from the GEOMAR Research Center for Marine Geosciences showed that radiation on the West Coast of North America could end up being 10 times higher than in Japan“. These are reputable research scientists saying this. Yet, universal silence in state media. Citizens from Hawaii to Alaska to Baja should be demanding information about what’s going on and what’s being done in response to the threat. The civil war in Syria is infinitesimally less threatening to the millions of people to be affected.” –OSJ

By Washington’s Blog:

Radiation Levels Will Concentrate in Pockets In Baja California and Other West Coast Locations

An ocean current called the North Pacific Gyre is bringing Japanese radiation to the West Coast of North America:

North Pacific Subtropical Convergence Zone FDA Refuses to Test Fish for Radioactivity ... Government Pretends Radioactive Fish Is Safe

The leg of the Gyre closest to Japan – the Kuroshio current – begins right next to Fukushima:

Kuroshio Current - Colour show water speed.  Blue slowest; red fastest

While many people assume that the ocean will dilute the Fukushima radiation, a previously-secret 1955 U.S. government report concluded that the ocean may not adequately dilute radiation from nuclear accidents, and there could be “pockets” and “streams” of highly-concentrated radiation.

The University of Hawaii’s International Pacific Research Center created a graphic showing the projected dispersion of debris from Japan (see pic at top)

Last year, scientists from the National Oceanic and Atmospheric Administration’s (NOAA) Pacific Marine Environmental Laboratory and 3 scientists from the GEOMAR Research Center for Marine Geosciences showed that radiation on the West Coast of North America could end up being 10 times higher than in Japan:

After 10 years the concentrations become nearly homogeneous over the whole Pacific, with higher values in the east, extending along the North American coast with a maximum (~1 × 10−4) off Baja California. 

***

With caution given to the various idealizations (unknown actual oceanic state during release, unknown release area, no biological effects included, see section 3.4), the following conclusions may be drawn. (i) Dilution due to swift horizontal and vertical dispersion in the vicinity of the energetic Kuroshio regime leads to a rapid decrease of radioactivity levels during the first 2 years, with a decline of near-surface peak concentrations to values around 10 Bq m−3 (based on a total input of 10 PBq). The strong lateral dispersion, related to the vigorous eddy fields in the mid-latitude western Pacific, appears significantly under-estimated in the non-eddying (0.5°) model version. (ii) The subsequent pace of dilution is strongly reduced, owing to the eastward advection of the main tracer cloud towards the much less energetic areas of the central and eastern North Pacific. (iii) The magnitude of additional peak radioactivity should drop to values comparable to the pre-Fukushima levels after 6–9 years (i.e. total peak concentrations would then have declined below twice pre-Fukushima levels). (iv) By then the tracer cloud will span almost the entire North Pacific, with peak concentrations off the North American coast an order-of-magnitude higher than in the western Pacific.

(“Order-of-magnitude” is a scientific term which means 10 times higher.  The “Western Pacific” means Japan’s East Coast.)

In May, a team of scientists from Spain, Australia and France concluded that the radioactive cesium would look more like this:
And a team of top Chinese scientists has just published a study in the Science China Earth Sciences journal showing that the radioactive plume crosses the ocean in a nearly straight line toward North America, and that it appears to stay together with little dispersion:

On March 30, 2011, the Japan Central News Agency reported the monitored radioactive pollutions that were 4000 times higher than the standard level. Whether or not these nuclear pollutants will be transported to the Pacific-neighboring countries through oceanic circulations becomes a world-wide concern.

***

The time scale of the nuclear pollutants reaching the west coast of America is 3.2 years if it is estimated using the surface drifting buoys and 3.9 years if it is estimated using the nuclear pollutant particulate tracers.

***

The half life of cesium-137 is so long that it produces more damage to human. Figure 4 gives the examples of the distribution of the impact strength of Cesium-137 at year 1.5 (panel (a)), year 3.5 (panel (b)), and year 4 (panel (c)).

***

It is worth noting that due to the current near the shore cannot be well reconstructed by the global ocean reanalysis, some nuclear pollutant particulate tracers may come to rest in near shore area, which may result in additional uncertainty in the estimation of the impact strength.

***

Since the major transport mechanism of nuclear pollutants for the west coast of America is the Kuroshio-extension currents, after four years, the impact strength of Cesium-137 in the west coast area of America is as high as 4%.

Note: Even low levels of radiation can harm health.