Friday, January 25, 2013

New paper finds sea levels in Uruguay have been falling for 6000 years

A paper published today in Palaeogeography, Palaeoclimatology, Palaeoecology finds sea levels in Uruguay have been decreasing for the past 6,000 years. According to the authors, "the sea level was above the present level approximately 6000 yr BP [before the present] and has been declining since then."


Figure 5. A. Relative sea level curve obtained from our data. Envelope and smoothed curve. B. Relative sea level curve constructed with data from the literature. Envelope and smoothed curve. C. Relative sea level curve obtained using the combined dataset. Envelope and smoothed curve. D. The three previous curves shown together. In all cases, ages are in calibrated years BP. MSL: mean sea level.
Relative sea level during the Holocene in Uruguay

  • Instituto de Cs. Geológicas, Facultad de Ciencias, Universidad de la República. Iguá 4225, 11400 Montevideo, Uruguay

Abstract

A curve of the relative sea level during the Holocene in Uruguay was constructed based on data from beach storm deposits. The error envelope was too great to register small but significant oscillations, but the number of points used and the coincidence between our data and those from the literature show that in Uruguay the sea level was above the present level approximately 6000 yr BP and has been declining since then. The non-parametric smoothing technique used favours a smooth declining sea level curve similar to that proposed for the coast of Brazil (different slope).

Highlights

► We constructed a relative sea level curve for the Holocene of Uruguay, ► It was constructed on the basis of beach storm deposits. ► The curve is smoothly declining since around 6400 calculated yr AP.

New study says extinction fears are "alarmist"

Fears that most of the Earth's species will become extinct before they have even been discovered by science are "alarmist", according to an international study released on Friday. The study also put extinction rates at less than one percent a decade, one-fifth the level of previous estimates.

Extinction fears 'alarmist': study
by Staff WritersWellington (AFP) Jan 25, 2013




Fears that most of the Earth's species will become extinct before they have even been discovered by science are "alarmist", according to an international study released on Friday.

Researchers set out to examine estimates that there were 100 million species globally and they were dying out at a rate of five percent every decade, meaning many would disappear before scientists had a chance to discover them.
Writing in the journal Science, the researchers from New Zealand, Australia and Britain said the estimates were based on a massive over-estimation of how many species were still unknown.

They said about 1.5 million species of animals and plants had already been catalogued and statistical modelling showed the total number in existence was closer to five million than 100 million.

The study, released Friday, also put extinction rates at less than one percent a decade, one-fifth the level of previous estimates.

"Our findings are potentially good news for the conservation of global biodiversity," lead author Mark Costello from the University of Auckland said.

"Over-estimates of the number of species on Earth are self-defeating because they can make attempts to discover and conserve biodiversity appear to be hopeless. Our work suggests this is far from the case."

He said the research raised the prospect that all of Earth's species could be identified within the next 50 years, particularly since the number of taxonomists, scientists who describe new species, was increasing.

"Naming a species gives formal recognition to its existence, making its conservation far easier," Costello said.

The paper conceded that Earth was in the midst of a "human-caused mass extinction phase" but reached more optimistic conclusions on biodiversity than other researchers, such as those at the California Academy of Sciences.

In 2011, the academy said: "Despite intensive efforts to document life on Earth, scientists estimate that more than 90 percent of the species on this planet have yet to be discovered.
"In the face of large-scale habitat loss and degradation, many of these species are disappearing before we even know they exist."

Costello and his colleagues said any meeting of biologists or conservationists was "hardly complete" without similar worries being raised.

But they said the development of science in biological hotspots such as Asia and South America meant more researchers than ever were working to identify new species.
"Some people despair that most species will go extinct before they are discovered," the study said.

"However, such worries result from over-estimates of how many species may exist, beliefs that the expertise to describe species is decreasing and alarmist estimates of extinction rates."

Thursday, January 24, 2013

WSJ: Keystone XL pipeline could cause warming of an infinitesimal 0.00001°C/yr

Related: Wacko James Hansen says the Keystone XL pipeline would be "essentially game over"

The Keystone XL Objections Wither Away

Science says the oil pipeline will be safe. But approval isn't certain.

WSJ.COM  1/25/13:  It has been a busy week for the much-delayed Keystone XL oil pipeline. The proposed project, intended to carry heavy crude oil from Canada's Alberta tar sands to refineries along the U.S. Gulf Coast, won approval on Tuesday from Nebraska Gov. Dave Heineman, after its planned route had been adjusted to address environmental concerns. The following day, 53 senators signed a letter to President Obama urging speedy federal approval. "There's no reason to deny or further delay this long-studied project," the senators said.
Let's hope the president listens. It was also this week that the State Department, which is reviewing the TransCanada Corp. project, announced that it would not reveal its findings until the spring. The department had previously promised an announcement by the end of March.

Environmentalists, who in the past have had Mr. Obama's ear, continue to voice strong opposition to the Keystone XL project. An anti-pipeline rally is being organized for next month in Washington, D.C.
But the arguments against the pipeline have all but evaporated. The route now largely bypasses the most ecologically sensitive regions. The overall contribution of its activity to global warming is too small to measure. It is time for the project to move forward.

According to the State Department, which has final say because the pipeline crosses the border with Canada, the project must be determined to be "in the national interest." The department defines that as projects that "facilitate the efficient movement of legitimate goods and travelers across U.S. borders" so long as they are within "the context of appropriate border security, safety, health, and environmental requirements."

The Keystone XL pipeline, as it is now proposed, certainly meets all of these criteria. The new route, which bypasses the environmentally fragile Sand Hills region of Nebraska, was approved after a report this month by the Nebraska Department of Environmental Quality determined that it will have "minimal environmental impacts" if properly managed.

A study last year by the Congressional Research Service found that the greenhouse-gas emissions from energy produced from Canadian tar-sands oil delivered by the pipeline would increase U.S. annual greenhouse gas emissions by a paltry 0.06%-0.3%. These additional emissions have virtually no impact on the rate of global warming, increasing it by an infinitesimal 0.00001 degrees Celsius per year. This amount is too small to detect, much less to worry about.

The last and perhaps most desperate argument from opponents is that the pipeline will demonstrate the viability of the Canadian tar-sands deposits and unleash an oil rush that will ultimately result in sufficient greenhouse-gas emissions to push global warming beyond some critical limit. This is nonsense.

Any such limit is simply a human construct—the more pessimistic you are, the less global warming you're willing to tolerate. But everyone can take comfort in new scientific research that revises down the future warming for each unit increase in greenhouse-gas emissions. This means that current estimates of how much warming is locked up in the Canadian tar sands is exaggerated.

Neither are the benefits of tar sands an unproven secret that the Keystone XL pipeline will reveal. The Canadian tar sands—sandy deposits with oil in them—are already an important global oil resource. Production has tripled since the mid-1990s, with most of the oil exported to the U.S. through a network of existing cross-border pipelines.

Keystone XL's sister pipeline, simply known as Keystone, started delivering oil in 2010 to refineries in Illinois. There are a number of proposals in Canada to develop routes to deliver the tar-sands oil to burgeoning markets in Asia.

The expansion of tar-sands development will happen with or without the approval of Keystone XL. A likely consequence of U.S. rejection of the pipeline would be acceleration of the establishment of an Asian outlet.

Opponents are trying to cast the Keystone XL pipeline as a symbol of the type of energy development that the president—with his newly dusted-off promise for action on climate change—must act to stop. But the symbol we need is of leadership and presidential approval of the pipeline—a sign that substance, rather than style, underlies determinations of "the national interest."
Mr. Knappenberger is assistant director of the Center for the Study of Science at the Cato Institute.

WSJ: To approve natural gas exports & energy projects, Obama may demand carbon tax


WSJ.COM 1/25/13:  President Obama set off a guessing game this week as to what he intended with his inaugural promise to double down on climate change. There's no need to guess. California Democrat Barbara Boxer, the Senate's climate guru, was happy to fill in the gory details.
The president's climate shout-out sent the green community into flurries of ecstasy, with grand hopes of a new push for cap-and-trade in Congress, or of a redoubled U.S. commitment to a global carbon pact. It fell to Mrs. Boxer to tamp down those ambitions, even as she reassured her devotees that there is more than one way to skin the climate cat.
"A lot of you press me . . . on: 'Where is the bill on climate change? Where is the bill?' There doesn't have to be a bill," Mrs. Boxer explained in a briefing the day after Mr. Obama's speech. "I'm telling you right now, EPA has the authority in the transportation sector, the electricity sector, and the industrial sector under the Clean Air Act" to do everything that legislation might otherwise do.
image
Associated Press
Sen. Barbara Boxer (D., Calif.)
In other words, with the election over, all pretense is gone. Democrats won't waste political capital on a doomed cap-and-trade bill. Yet they'll get their carbon program all the same, by deputizing the EPA to impose sweeping new rules and using their Senate majority to block any GOP effort to check the agency's power grab. The further upside? Brute regulation is not only certain and efficient, it allows vulnerable Democrats to foist any blame on a lame-duck administration.
Mrs. Boxer has spent years on climate, and she wouldn't be surrendering her legislative ambitions without clear assurances the White House has her covered. Her words were a signal that the Obama EPA is about to re-energize the regulatory machine that it put on ice during the election. Republicans who hoped Lisa Jackson's resignation signaled a more humble EPA approach should instead prepare for an agency with a new and turbocharged mission.
Just as notable, Mrs. Boxer gave the clearest sign yet that Dems intend to simultaneously pursue the new holy grail of climate control: a carbon tax. The left has been ginning up enthusiasm for this energy tax, not only as a means of cutting fossil-fuel use, but as a way of generating enormous revenue to cover their spending ambitions. The Democrats' political problem, however, is that the tax remains hugely unpopular.
Mrs. Boxer helpfully detailed Democrats' new strategy for getting a foothold. Now that cars are so much more fuel-efficient, she explained, the gas tax isn't bringing in enough revenue to cover highway needs. How to fix this? Easy! Just replace the gas tax with a carbon tax.
As strategy goes, this is clever. The gas tax itself is unpopular, so Democrats are betting on some public support for killing it. They figure at least some Republican porksters will salivate at more state highway money. Democrats can initially sell the tax as limited to covering infrastructure, knowing that once the principle is established, they can ramp up. And all this can be silkily pitched as part of "tax reform."
The only thing Mrs. Boxer did not explain was how the administration intends to balance this climate crackdown with its position atop an American energy renaissance. Mr. Obama spent the past election year bragging that gas and oil production had risen on his watch, hoping to cadge some credit for the economic boom that has accompanied private-sector drilling advances.
The administration has kept open the possibility of approving the Keystone XL pipeline. It has hinted it will greenlight more export terminals for natural gas. It last week again delayed its fracking rules for public lands. These moves have encouraged the oil-and-gas industry, even as they have driven the environmental community nuts. The Natural Resources Defense Council this week declared that approving Keystone would be "fundamentally inconsistent" with Mr. Obama's renewed vow to "address climate change."
Or would it? Republicans might recollect that the Obama administration has a practiced method of winning controversial legislation like ObamaCare and Dodd-Frank. To wit, it uses a combination of bribes and threats to get pertinent sectors of the business community to back its efforts.
Consider what the mighty oil-and-gas lobby might be co-opted to do—either out of gratitude for the president's backing or fear that he might turn on it. Consider how the political environment might change if the industry threw its weight behind a carbon tax or the EPA climate scheme. Consider that this might prove an easy call, given that a tax would be borne by its customers, while EPA regs will mostly crush coal. Consider that numerous Big Oil chieftains have already endorsed such a carbon levy. And who says Mr. Obama has to decide Keystone XL or anything else soon? He could hold out, to see what he can extract in return.
All this is food for thought for those conservatives who have been lulled into complacency by the stall of cap and trade. A big climate agenda is coming, only on very different terms. If Republicans hope to spare the economy that pain, it's time to adapt.

New paper finds why weather & climate models are so often wrong

"Fluid dynamics expert and engineering professor Julie Crockett has figured out why the weatherman is so often wrong. According to Crockett, forecasters make mistakes because the models they use for predicting weather can't accurately track highly influential elements called internal waves." "Internal waves are difficult to capture and quantify as they propagate, deposit energy and move energy around," Crockett said. "When forecasters don't account for them on a small scale, then the large scale picture becomes a little bit off, and sometimes being just a bit off is enough to be completely wrong about the weather." Note climate models are the same computer models used by weather forecasters, only run for longer periods of time. If short term weather cannot be reliably predicted, long term climate change projections are exponentially more uncertain. 

The storm that never was: Why the weatherman is often wrong

BYU engineer pinpoints forecasting's complicating x-factor

 IMAGE: BYU engineering professor Julie Crockett has figured out why the weatherman is wrong so often.
Click here for more information.
Have you ever woken up to a sunny forecast only to get soaked on your way to the office? On days like that it's easy to blame the weatherman.

But BYU mechanical engineering professor Julie Crockett doesn't get mad at meteorologists. She understands something that very few people know: it's not the weatherman's fault he's wrong so often.

According to Crockett, forecasters make mistakes because the models they use for predicting weather can't accurately track highly influential elements called internal waves.

Atmospheric internal waves are waves that propagate between layers of low-density and high-density air. Although hard to describe, almost everyone has seen or felt these waves. Cloud patterns made up of repeating lines are the result of internal waves, and airplane turbulence happens when internal waves run into each other and break.

 IMAGE: A BYU engineer has figured out the complicated x-factor that causes meteorologists to be wrong so often.
Click here for more information.
"Internal waves are difficult to capture and quantify as they propagate, deposit energy and move energy around," Crockett said. "When forecasters don't account for them on a small scale, then the large scale picture becomes a little bit off, and sometimes being just a bit off is enough to be completely wrong about the weather."

One such example may have happened in 2011, when Utah meteorologists predicted an enormous winter storm prior to Thanksgiving. Schools across the state cancelled classes and sent people home early to avoid the storm. Though it's impossible to say for sure, internal waves may have been driving stronger circulations, breaking up the storm and causing it to never materialize.

"When internal waves deposit their energy it can force the wind faster or slow the wind down such that it can enhance large scale weather patterns or extreme kinds of events," Crockett said. "We are trying to get a better feel for where that wave energy is going."
 IMAGE: BYU fluid dynamics expert and engineering professor Julie Crockett has figured out why the weatherman is so often wrong.
Click here for more information.
Internal waves also exist in oceans between layers of low-density and high-density water. These waves, often visible from space, affect the general circulation of the ocean and phenomena like the Gulf Stream and Jet Stream.

Both oceanic and atmospheric internal waves carry a significant amount of energy that can alter climates.

Crockett's latest wave research, which appears in a recent issue of the International Journal of Geophysics, details how the relationship between large-scale and small-scale internal waves influences the altitude where wave energy is ultimately deposited.
To track wave energy, Crockett and her students generate waves in a tank in her lab and study every aspect of their behavior. She and her colleagues are trying to pinpoint exactly how climate changes affect waves and how those waves then affect weather.
Based on this, Crockett can then develop a better linear wave model with both 3D and 2D modeling that will allow forecasters to improve their weather forecasting.

"Understanding how waves move energy around is very important to large scale climate events," Crockett said. "Our research is very important to this problem, but it hasn't solved it completely."