Sep 08, 2009
Excerpts from a scientific paper by Dr Martin Hertzberg
By Dr Martin Hertzberg
Martin Hertzberg 2009, “Earth’s radiative equilibrium in the solar irradiance”, Energy & Environment v.20 no.1&2, pp.85-96 (Special double-issue: Natural drivers of weather and climate, 278p.)
“Many interacting regions, both homogeneous and heterogeneous, are involved in the complex radiative balance. Unverified models do not realistically represent that balance, and it would be absurd to base public policy decisions on them.
“… the controlling factor in determining the average temperature of the Earth is its absorptivity to emissivity ratio.
Even for those portions of Earth that are not covered with clouds, the assumption that the ocean surface, land surfaces, or ice and snow cover would all have blackbody emissivities of unity, is unreasonable.
It is certainly true that in the absence of an atmosphere, temperatures would drop drastically at night as the darkened portions of Earth lost infrared energy by radiation to Space; however, with all the incoming solar radiation being concentrated on the daytime half of the surface, daytime temperatures would rise as drastically as the night time temperatures would fall.
If the near-surface air temperature is not representative, is it realistically possible to measure the average temperature of the entire mass of absorbing and emitting entities with sufficient accuracy to make a meaningful comparison between the data and the predictions?
How high in altitude should one go in the atmosphere to include it all?
Similarly, how deep in the liquid fluid of the oceans should one go in order to include the mass below the ocean surface that influences the heat and mass transport processes near the ocean surface and in the atmosphere above it?”
“… looking at the problem in depth, it may be more realistic to conclude that its resolution may be unattainable given our limited understanding of the complex processes involved, and the lack of data available for the current thermodynamic state of those entities.
The heat and mass transport from that enormous ocean reservoir to the atmosphere are the dominant factors in determining temperatures and weather conditions over the entire globe.
It is implausible to expect that small changes in the concentration of any minor atmospheric constituent such as carbon dioxide, can significantly influence that radiative equilibrium.
Further quotes by this accomplished research scientist:
“In 1994 I tried to get an analysis of the then prevalent state of climate science published in Nature and Science, but they weren’t interested. I even sent a copy of it with a long letter to Burt Bolin, who was then chair of the IPCC. He replied to the effect that who was I to challenge the decades of work of so many distinguished scientists. He also argued that I was being disrespectful by referring to the some of the theories of the global warming advocates as “catechisms”. After studying the issue more carefully and reading the well researched papers of the skeptics/realists, I now think that the AGW arguments do not deserve to be referred to as either “theories” or “catechisms”. In reality, they are elaborate hoaxes.”
“I tried explaining to [those] Senators that in order for them to accept the Gore-IPCC-Hansen theory as valid, they will first have to repeal the Second Law of Thermodynamics!”
Compiled by Hans Schreuder, 7 September 2009
Sep 06, 2009
August 2009 Global Temperature Update: +0.23 degrees C
By Dr. Roy Spencer
See larger image here.
See larger table here.
See larger image here.
August 2009 saw a modest fall in the global average tropospheric temperature anomaly, from +0.41 deg. C in July to +0.23 deg. C in August. The tropical and Northern Hemispheric troposphere remain quite warm, but the Southern Hemisphere cooled by over 0.4 deg. C in the last month.
NOTE: For those who are monitoring the daily progress of global-average temperatures here, we are still working on switching from NOAA-15 to Aqua AMSU, which will provide more accurate tracking on a daily basis. We will be including both our lower troposphere (LT) and mid-tropospheric (MT) pre-processing of the data. We will also be adding global sea surface temperature anomalies from the AMSR-E instrument on board the NASA Aqua satellite.
Global Oceanic Climate Update for August 2009
This is the first of what might turn into a series of monthly updates of some maritime climate parameters monitored by the AMSR-E instrument on NASA’s Aqua satellite. All monthly statistics have been computed by me from daily global gridpoint data produced and archived by Remote Sensing Systems (RSS) under the direction of Frank Wentz, a member of our U.S. AMSR-E Science Team. Since Aqua was launched in 2002, the data are available only since June, 2002. A description of how these products were derived, and where they reside, is provided here.
There are 5 “ocean products”: sea surface temperature [SST]; near-surface wind speed; vertically-integrated water vapor; vertically integrated cloud water; and rain rate. I will present time series of monthly anomalies averaged over the global, ice-free oceans (56 deg. N to 56 deg. S latitude), and separately for the deep tropics (20 deg. N to 20 deg. S latitude). ‘Anomalies’ are departures from the average seasonal cycles in those parameters, which will be recomputed as each new month of data is added.
See larger image here
How these different variables change relative to each other is illustrated in the following lag-correlation plot of SST versus the other variables. “PDO” is the Pacific Decadal Oscillation Index, while “SOI” is the Southern Oscillation Index (negative for El Nino, positive for La Nina). A discussion of these curves is provided later, below.
DISCUSSION
Using the 20N-20S lag correlation plot as an example, you can see that total integrated water vapor is highly correlated with SST, which in turn is highly correlated with El Nino conditions (negative SOI values). Also note that sea surface temperature tends to peak after months of anomalously low wind conditions, then falls as wind speeds increase. Cloud water and rain rates increase as SST increases, reaching a maximum 1 to 3 months after the SST peaked. Read more on tropical SST analyses here.
The following is the monthly USH global plot versus the ESRL CO2.
See larger image here
Sep 04, 2009
Not Again! Media Now Promoting Arctic ‘Hockey Stick’ - Scientists Already Rebuking Latest Study
Marc Morano, Climate Depot
The new study claims to show “human-generated greenhouse gas emissions have helped reverse a 2,000-year trend of cooling in the Arctic, prompting warmer average temperatures in the past decade that now rank higher than at any time since 1 B.C.,” according to a September 3, 2009 article by the Washington Post’s Juliet Eilperin. The study will appear in the September 3, 2009 online version of the journal Science. The lead author was Northern Arizona University professor Darrell S. Kaufman.
The Washington Post also saw fit to gave prominent play to the environmental group World Wildlife Fund’s new dire Arctic study claiming a scary global warming caused “transformation” of the Arctic. The Post article on the new Arctic “Hockey Stick” completely glossed over years of contrary data and instead mostly gave the authors a scrutiny free ride. (Eilperin also misspelled the name of one scientist she quoted.)
MIT climate scientist Dr. Richard Lindzen told Climate Depot, “This looks like this week’s “Hockey Stick” including many of Mann’s collaborators.” [Editor’s Note: Mann’s has attempted multiple “Hockey Stick” inventions and his newest creation is the Hurricane “Hockey Stick”.]
Ice Mann enlarged here.
Climate data analyst Steve McIntyre who publishes Climate Audit and is known for his research discrediting Mann’s original “Hockey Stick” temperature graph, weighed in on the new Arctic study. “Amusingly, the [Arctic study’s lead author] Kaufman Team perpetuates Mann’s upside down use of the Tiljander proxy,” McIntyre wrote on September 3, 2009. “You can readily see that this closely matches the Mann version,” McIntyre noted. “The most cursory examination [of the study] shows the usual problem of seemingly biased picking of proxies without any attempt to reconcile proxy conflicts,” McIntryre wrote. See also this post showing the cherry picking selection of the proxys with the most hockey stick appearance and other statistical chichanery.
New Peer-Reviewed Study Shows Arctic COOLING Over last 1500 years! - Feb 5, 2008 - Published in Climate Dynamics on 30 January 2008. Excerpt: New Arctic Study published in Climate Dynamics, and the work was conducted by Hakan Grudd of Stockholm University’s Department of Physical Geography and Quaternary Geology - Published online: 30 January 2008 - Excerpt: “The late-twentieth century is not exceptionally warm in the new Tornetrask record: On decadal-to-century timescales, periods around AD 750, 1000, 1400, and 1750 were all equally warm, or warmer.”
Danish Meteorological Institute records show: No Arctic Warming Since 1958! - ‘Arctic was warmer in the 1940s than now’ - May 13, 2009.
U.S. Government Arctic Study: ‘Current rate of human-influenced Arctic warming is comparable to peak natural rates documented by reconstructions of past climates’ - January 16, 2009
January 2008 study in the peer-reviewed journal Science found North Atlantic warming tied to natural variability. Excerpt: A Duke University-led analysis of available records shows that while the North Atlantic Ocean’s surface waters warmed in the 50 years between 1950 and 2000, the change was not uniform. In fact, the sub-polar regions cooled at the same time that subtropical and tropical waters warmed. This striking pattern can be explained largely by the influence of a natural and cyclical wind circulation pattern called the North Atlantic Oscillation (NAO), wrote authors of a study published Thursday, January 3 in Science Express, the online edition of the journal Science. [...] “It is premature to conclusively attribute these regional patterns of heat gain to greenhouse warming,” they wrote.
A November 2007 peer-reviewed study conducted by a team of NASA and university experts found cyclical changes in ocean currents impacting the Arctic. Excerpt: “Our study confirms many changes seen in upper Arctic Ocean circulation in the 1990s were mostly decadal in nature, rather than trends caused by global warming,” said James Morison of the University of Washington’s Polar Science Center Applied Physics Laboratory in Seattle, according to a November 13, 2007 NASA release.
A 2005 peer-reviewed study in Geophysical Research Letters by astrophysicist Dr. Willie Soon, solar irradiance appears to be the key to Arctic temperatures. The study found Arctic temperatures follow the pattern of increasing or decreasing energy received from the sun. Excerpt: Solar forcing explains well over 75% of the variance for the decadally-smoothed Arctic annual-mean or spring SATs (surface air temperatures).
According to a 2003 study by Arctic scientist Igor Polyakov, the warmest period in the Arctic during the 20th Century was the late 1930s through early 1940s. Excerpt: Our results suggest that the decadal AO (Arctic Oscillation) and multidecadal LFO (low-frequency oscillation) drive large amplitude natural variability in the Arctic making detection of possible long-term trends induced by greenhouse gas warming most difficult.
Report: Arctic ‘ice level in the 1920’s, 30’s and early 40’s was at a similar low level’ of today - September 10th, 2008. For many, many more Arctic studies, go to: Climate Depot’s Arctic Fact Sheet - Get the latest peer-reviewed studies and analysis - July 30, 2009
The Post article on the new Arctic study also reported: “The [new Arctic] paper in Science sheds light on several key scientific questions, including how the earth’s orbital pattern around the sun affects our climate, and the extent to which current computer climate models mirror real-world conditions. Some climate skeptics have argued that the fact that the earth wobbles in its axis of rotation has helped determine recent warming, rather than human activities. But the new study shows this wobble—which affects how much sunlight the earth receives in the middle of the summer—actually accounts for a long-term cooling trend in the Arctic, which has only been reversed in the past half-century.”
But geologist Dr. Don J. Easterbrook, Emeritus Professor at Western Washington University, who has authored eight books and 150 journal publications, disputed the findings of new Arctic report. “The glacial record (both advance and retreat history and the isotope data in Greenland ice cores) contrast sharply with the temperature curves shown in this paper,” Easterbrook told Climate Depot. “There is no way that the well documented, short-term climate changes can be orbitally driven because of the vastly longer time scales for orbital changes. Among the big surprises (and most significant) results of the ice core data is that the abrupt, short-term climate changes cannot be possibly be explained by orbital changes,” Easterbrook added.
Singer agreed, noting, “the Abstract tries to relate 20th century temperature changes to insolation changes and claims these are ‘orbitally’ driven. This is highly unlikely: the temperature changes on a time scale of decades; orbital changes are much slower, and generally measured in millennia. I prefer [Harvard University Astrophysicist] Dr. Willie Soon’s analysis of Arctic temperature changes.”
Eilperin then goes on to claim that that the “documentation of the Medieval Warm Period is primarily about Europe, and natural records indicate average Arctic temperatures during that time were not as high. There was a brief period in the early fifth century that came close to, but was not quite as warm, as the Arctic’s most recent summer temperatures.”
How sad, that Eliperin’s refused to do basic research before making such a whopper of a claim. The latest research clearly reveals that the Medieval Warm Period (used to be referred to as the Medieval Climate Optimum) has been verified and was in fact global, not just confined to the Northern Hemisphere. The Center for the Study of Carbon Dioxide and Global Change reported in 2009 that the “Medieval Warm Period was: (1) global in extent, (2) at least as warm as, but likely even warmer than, the Current Warm Period, and (3) of a duration significantly longer than that of the Current Warm Period to date.”
In addition, The Science and Public Policy Institute reported in May 2009: “More than 700 scientists from 400 institutions in 40 countries have contributed peer-reviewed papers providing evidence that the Medieval Warm Period (MWP) was real, global, and warmer than the present. And the numbers grow larger daily.”
After promoting the eco-group World Wildlife Fund’s new climate study, the Washington Post also digs up a scientist with a woeful reputation, Robert Corell, and chooses not to identify his employment with the partisan Heinz Foundation, vice-chaired by Teresa Heinz Kerry, wife of Senator John Kerry (who recently claimed: Global Warming Is The Next 9/11) Eilperin felt compelled to state that Fred Singer was a “skeptic” but the reporter felt no obligation to label any other scientists she cited in the article. Reporter Eilperin wrote: “Robert Correll, who chairs the Arctic Climate Impact Assessment, said the paper in Science will likely ‘in the long haul become a seminal piece in the scientific literature” because it allows other climate researchers “to set their work in a long time scale.’” First off, Eilperin misspelled Corell’s name as “Correll.” Second, Eilperin could not find the space in her article to note Corell’s affiliation with former Vice President Al Gore or his role in the left-wing Heinz Center or the fact that Corell, has been under fire for dubious climate claims. In addition, Corell has been linked to an “affiliate” of a Washington, D.C.-based consulting firm that provides “expert testimony” in trials and he was reportedly sponsored by the left-leaning Packard Foundation. Read much more here.
Sep 03, 2009
Phasing out our incandescent lightbulbs
The Scientific Alliance Newsletter September 3, 2009
This week saw the next step in the phasing out of traditional tungsten filament lightbulbs; manufacturers and importers are no longer supplying 100 watt or any pearl bulbs in EU Member States. By 2012, manufacture or import of all such bulbs will be banned, and consumers will instead need to rely on the low-energy compact fluorescent lamp (CFL). And this is not just another example of Europe leading the pack on environmental issues. A number of other countries, including the USA, are set on the same course.
It is undeniable that CFLs use considerably less energy and that many of their original disadvantages have been overcome. These days, you do not have to spend 10 pounds on an object much larger than a standard bulb and then wait five minutes for it to give a decent light. Modern bulbs are quite compact, available in a range of shapes and sizes, and produce a high output very quickly.
But they are not the same as filament bulbs or the increasingly common alternative of halogen lighting. And they are not universally popular. For many applications, they are excellent, especially if lights are to be left on for a long time. However, their disadvantages - well documented elsewhere - include requiring more energy to make, containing mercury (an end-of-life disposal problem which also makes clearing up a broken one more hazardous), their inability to be used with dimmer switches, the different quality of their light and their size making them too large for many existing fittings.
The drawbacks and lack of universal enthusiasm are perhaps not surprising. CFLs are, after all, just a different incarnation of the familiar fluorescent tube lighting: low energy and fine for some purposes, but not good for general domestic use. As well as the different spectrum of light they emit, some people are troubled by their inherent rapid flickering. In a free market, people make their own choices, and if lower electricity bills and longer bulb life are not enough to make them change, there must be some good reasons to stop them.
Although energy savings per bulb may be very significant, the direct impact on household and national energy use are more difficult to fathom. For a start, if people use low-energy bulbs, they are often more inclined to leave them on for longer. The same thing happens for other energy efficiency measures. Also, it will take a very long time to phase out use of filament bulbs once they are no longer available. It is clear that many people are stocking up, and their supply could last many years. So, the phasing in of actual CFL use in homes will be a long process.
EU statistics show that lighting accounts for just under 3% of domestic energy consumption (about 10% of electricity use, but remember that much of the energy used is for heating, and supplied by gas or oil). Looking at overall energy consumption, including transport and industry, domestic lighting represents 0.76% of the total used in the 27 Member States.
But this is not the whole picture. A study by VITO consultants showed the following breakdown of lamp use in European homes in 2007:
>54% incandescent (down from 85% in 1995 and still decreasing)
>18% low-voltage halogen (and increasing)
>5% mains-voltage halogen (and growing)
>8% linear fluorescent
>15% CFL
So, if we assume that all remaining filament bulbs are replaced by CFL at some point in the future (unlikely, as use of halogen bulbs is likely to increase), that these bulbs are used to the same extent as those they replace and that the energy reduction per bulb is 80%, the total reduction in EU energy use would be 0.54 x 0.8 x 0.76% = 0.33%. This figure is almost certainly an overestimate, particularly as the inefficiency of conventional bulbs generates heat which supplements other forms of heating in winter. Which begs the question: is it really worth it?
Politicians are forcing a change to a particular technology which is fine for some applications but not universally liked, and which has disadvantages. In the meantime, very efficient and flexible lamps are becoming available using light-emitting diode (LED) technology. Already, they are widely used in torches and for car brake lights. As their cost comes down, LEDs will probably become a preferred option for domestic lighting as well. A similar amount of energy would be saved and consumers would be happier. The problem is that legislators are unable to tackle the big issues of energy use effectively, so go for the soft target of a high profile domestic use of energy. Like the furor over supermarket plastic bags, this is gesture politics.
Read more on the incandescent, CFL and LEDs here.
Sep 02, 2009
Opinion: the Powerless Green Future
The Daily Bayonet
The UK could be rationing electricity within 8 years because demand for power is forecast to outstrip supply. The British government committed the nation to its Low Carbon Transition Plan in July, an idea that hopes wind and solar can produce enough electricity to power the entire country. Renewable energy is a green dream that will turn into a nightmare for families facing sudden power cuts or scheduled brown-outs.
In the 21st century, the idea that a nation cannot provide enough power for its people and industries should be unthinkable. There is no coal shortage, no oil shortage and no Uranium shortage. The only shortage is plants that convert these fuels into power. But why?
Greens have played a key role in dePowering the UK, Greenpeace scofflaws at Kingsnorth illustrate the radical scaremongering that made the idea of building new generating capacity a political nightmare. Eco-radicals are proud of their drive to deprive people of affordable energy, witness the Sierra Club in the USA and how they brag about the 100 power stations they ‘prevented’.
The perfect storm of a spineless political class and a somnolent public faced with aggressive green lobby groups has brought the UK to a point where it is a country without an energy future. No one listens to voices of reason, preferring to pretend that renewable energy can fill the gap and ignoring that ‘green’ alternatives require the industrialization of the open countryside:
“...the land area occupied by wind farms would be nearly 10 percent of the country, or roughly the size of Wales. The area occupied by desert solar power stations - in the case of Britain, they would have to be connected by long-distance power lines - would be five times the size of London. The 50 nuclear power stations required would occupy a more modest 50 square kilometers.
What will happen in 8 years when the lights start to go out across Britain? Here’s two predictions that will drive greens nuts, because the unintended consequences of their blinkered knee-jerk activism will result in bad outcomes for the environment:
Unlike the 1970’s, small generators are available and affordable. Families and small businesses that can afford them will buy their own rather than lose a freezer full of meat or their Internet connection. Small generators run on gas and are pretty inefficient, inconveniently.
The government of the day will panic and will build new generation capacity as cheaply and quickly as it can, which means new coal powered plants, the very thing that Greenpeace and other eco-naifs wished to avoid. (A potential problem for green radicals is that any attempts to block urgent new builds will likely be frowned upon by a public that want their lights on, cutting off their essential cover of public support.)
British people are waking up to a major problem that threatens to negatively impact their everyday lives. Politicians will pay a heavy price for their part in the fiasco, the only question is whether there will be a backlash against the idiot greens that pushed the country to the brink and perhaps over it.
Whatever happens, the situation in Britain is a canary in the coal mine for other countries blindly following the green path. If you live in the USA, Canada, Australia or any other country where carbon has been demonized by eco-hysterics, this could happen to you. Get involved and stop the rot, before your lights go out.
Read more here. H/T Benny Peiser, CCNet
|