Monday, May 23, 2011

The Incas had a medieval warm period too!

Another of many hits at the Warmist lie that the MWP was a "North Atlantic" event only

A FLAIR for military precision and a culture steeped in the legends of heroic warriors are traditionally credited with the rise of the Incas.

However, the powerful empire may have sprung from a more earthly innovation: the discovery that llama dung makes an excellent fertiliser. An archaeological study suggests that the adoption of llama droppings as fertiliser about 2,700 years ago allowed the Inca to switch from growing quinoa to the mass cultivation of maize, a more nourishing and easily-stored crop.

The ability to farm more efficiently fuelled the territorial expansion of the Incas, which at its peak stretched from the modern Colombian border to the middle of Chile.

The resultant surplus of maize and potatoes freed a large part of the growing population for activities outside food production, such as constructing roads and buildings, and serving in an increasingly ambitious army.

"Although a cereal such as maize is needed for civilisations to take off, and it provided many more calories than quinoa, or in fact potatoes, this widespread shift to agriculture and societal development was possible only with an extra ingredient - organic fertilisers on a vast scale," said Alex Chepstow-Lusty of the French Institute of Andean Studies in Lima, who led the study. "Maize and muck were the essential ingredients to drive the expansion of the Inca Empire."

The growth of the empire was consolidated by a warming of the climate between AD1100 and 1500, which allowed the Incas to colonise higher and higher territories for maize cultivation, Dr Chepstow-Lusty said.

The Incas' Royal Road, which went through the highlands for a distance of 3,250 miles, and the Coastal Road, which stretched for 2,520 miles, were both constructed following the switch to maize. So, too, was Machu Picchu, "the Lost City of the Incas", where temples, sanctuaries and houses stand remarkably intact today, demonstrating the scale and the skill of Inca architecture. By the time the Spanish colonials arrived in 1533, the Incas had built up food supplies to last the population more than ten years.


Duh! Oceans Drive Climate (Not CO2), Says New Nature Study

More evidence of the obvious now revealed in a recent Nature article from research conducted by the IFM GEOMAR and Woods Hole Oceanographic Institution. Believe it or not, they are slowly finding out that the oceans play a role in climate.

Once again climate scientists, who often claim the science is settled, are running into “surprises” and finding out that there is so much they don’t know. Here’s the press release from the IFM GEOMAR
Oceanographers from Kiel document the effect of equatorial deep currents on West African rainfall

Our climate is affected by the ocean in many ways.

The most prominent example is the El Niño phenomenon in the Pacific, a well-documented interannual climate signal. Oceanographers from the Leibniz Institute of Marine Sciences in Kiel (IFM-GEOMAR) and Woods Hole Oceanographic Institution (WHOI, USA) have recently documented the effect of deep equatorial currents in the Atlantic on rainfall and climate over West Africa.

Precipitation associated with the West African Monsoon is of major significance to agriculture, water resources and health concerns in one of the more densely populated regions in Africa. The timing and amount of rainfall each year in the countries along the northern coast of the Gulf of Guinea are determined in part by the sea surface temperature of the tropical Atlantic. The details of this interaction between the ocean and the atmosphere are not fully understood at this time. Previously it was thought that effects from the Pacific and North Atlantic were the main source for climate fluctuations in the equatorial Atlantic.

Oceanographers from the Leibniz Institute of Marine Sciences in Kiel (IFM-GEOMAR), in collaboration with their colleagues from the USA, were now able to demonstrate the existence of regular interannual temperature fluctuations which have an effect on the rainfall of the region but cannot be traced back to the previously known sources.

Even more astonishing for the scientists is the fact that all measurements indicate that these fluctuations are caused by deep currents of the equatorial Atlantic itself. “To date, when trying to explain tropical climate variations, we have always looked upwards, specifically to the atmosphere. Our new data, for the first time, direct our attention towards the depths of the ocean, thereby opening new perspectives for our scientific approach,” explained Dr Peter Brandt, professor at IFM-GEOMAR.

In a large-scale, international research programme, the Tropical Atlantic Climate Experiment (TACE), experts have attempted for years to track the causes, effects and potential periodicities of climate fluctuations in the tropical Atlantic. The German contribution to this programme also includes deep-sea moorings along the equator.

These moorings consist of several km of mooring wire held upright in the water column by flotation and buoys. Instruments are mounted along the wire to continuously record current speed and direction, salinity and temperature, thereby allowing the observation of long-term changes of parameters in the deep ocean.

Furthermore, the scientists obtain current data from freely drifting deep-sea buoys, so-called Argo floats, and also information on the sea surface itself and the atmosphere from various satellite-based sensors.

“The time series obtained over the past ten to twenty years have revealed previously unknown fluctuations of currents and temperatures at the surface of the tropical Atlantic which have a regular cycle of 54 months, or 4 ½ years,” explained Peter Brandt.

The scientists were able to document similar fluctuations of the “Deep Jets”, deep currents down to 3000 m with speeds of 10-20 cm/sec. They flow along the equator, crossing the entire Atlantic, with flow reversals every few hundred meters. “These jets are generated in the deep ocean, and their energy apparently propagates upwards through the water column. Once near the surface, this energy affects currents and temperatures,” stated Dr Brandt.

On the other hand, sea surface temperatures are among the deciding factors for rainfall fluctuations over West Africa. “How large the effect of these deep jets is, and how they are generated is still somewhat of a mystery,” said Dr Brandt, “we still have a lot of work ahead of us.”

We keep hearing that CO2 is the main climate driver, yet so much research has come out showing that it’s the sun and oceans.


A sample of tide gauge charts

Just a slow but steady long-term rise in evidence. No recent acceleration

Graphic by Nik From NYC

One of those "only 10 years to act" false prophecies

1979 NCAR Forecast : Sea Level May Rise 15-25 Feet Before The Year 2000


Life In The Climate Science Nut House

CHICAGO — The Windy City is preparing for a heat wave — a permanent one.
"Climate scientists have told city planners that based on current trends, Chicago will feel more like Baton Rouge than a Northern metropolis before the end of this century.

So, Chicago is getting ready for a wetter, steamier future. Public alleyways are being repaved with materials that are permeable to water. The white oak, the state tree of Illinois, has been banned from city planting lists, and swamp oaks and sweet gum trees from the South have been given new priority. Thermal radar is being used to map the city’s hottest spots, which are then targets for pavement removal and the addition of vegetation to roofs. And air-conditioners are being considered for all 750 public schools, which until now have been heated but rarely cooled."

Summers in Illinois have been cooling for at least eighty years. What trends are these climate scientists talking about? Once again, I have to ask – are they dishonest, or just grossly incompetent?



Three articles below

The prophesied end of the world did not come on May 21 but the Greenie prophecies of doom never stop

This is an old one though: Sea levels could rise a metre by 2100. And aerial pigs could appear too -- particularly when one considers that the sea level rose only 7" (18cm) over the entire 20th century. Even journalists are no longer swallowing the bunk whole, however. Note that they use the Australian slang term "spruik" to describe the prophecy. "Spruiking" is what a con-man or an over-enthusiastic salesman does

The federal government's climate commission says global warming could cause the world's sea level to rise up to one metre by the end of the century - higher than previously thought.

The commission, established by Labor to spruik the case for tackling dangerous climate change, is also calling for a fresh approach to reducing carbon emissions. It suggests that rather than focusing on interim targets based on percentage cuts, governments should commit to emitting no more than an agreed carbon dioxide "budget" by 2050.

This so-called budget approach would allow greater flexibility and encourage investment in the most-effective technologies rather than quick-fix solutions.

The commission is releasing its first major report, The Critical Decade, on Monday. "A plausible estimate of the amount of sea-level rise by 2100 compared to 2000 is 0.5 to one metre," it says. That's higher than the Intergovernmental Panel on Climate Change's top range of 0.18m to 0.76m.

Commissioner Will Steffen, a Canberra-based climate scientist, made the assessment after surveying the existing literature and speaking to experts. "Some people may take issue with that - but that's my judgment," Professor Steffen told AAP ahead of the report's release at Parliament House. [Good for you Prof. But how good is your judgment? Prophecies are almost always wrong, you know]

The report states that even a rise of 0.5m could lead to an increase in extreme flooding events for coastal areas of Sydney and Melbourne "by factors of 1000 or 10,000 for some locations".

The global sea level has risen by about 20cm since the 1880s. But the rises aren't uniform - they vary according to ocean currents and the local conditions on the land.

In Australia, sea levels are rising fastest on the northern coastline. Around Arnhem Land it's rising by more than seven millimetres a year while the global average is 3.2mm. [So if it's not global, is it unrelated to global warming?]

Prof Steffen notes that's bad news for Kakadu. "It is low-lying and already we're seeing some salt water intrusion into some of the fresh water wetlands," he said.

When it comes to damage to the Great Barrier Reef, the Australian National University academic argues the report contains "solid data that says we are indeed starting to see some of these affects on calcifying organisms".

Prof Steffen said he hoped the report would refocus the political debate on the risks posed by climate change. "The costs of not doing something about climate change will almost surely be far, far greater than the costs of doing something about it," he said.

When it comes to taking action, the report suggests focusing on limiting emissions to an agreed global budget.

"The strategic challenge (then) changes from whether the 2020 target is a five per cent, 25 per cent or 40 per cent reduction against a particular baseline to how do we implement the transition to a low- or no-carbon economy by 2050 with the least economic and social cost while staying within the budget," the report states.

For humanity to have a 75 per cent change of limiting temperature rises to two degrees Celsius it would need to emit no more than one trillion tonnes of carbon dioxide between 2000 to 2050. Some 30 per cent of that budget has already been spent.

The report acknowledges the difficulty with this approach would be allocating the global budget to individual countries.

But Prof Steffen points out the new method "really focuses attention on the endgame which is to decarbonise economies by the middle of the century". The report argues this would encourage investment decisions to be taken from a long-term perspective.


Prominent Australian conservative attacks Climate Commission report as 'nonsense'

LIBERAL [party] powerbroker Nick Minchin has attacked a new report that declares the world is in imminent danger from human-induced climate change as offensive nonsense from known "global warming alarmists".

Senator Minchin, who played a key role in terminating Malcolm Turnbull's leadership over his support for emissions trading, said there was still a legitimate debate over the role of humans in climate change. “The so-called Climate Commission is a Labor government-appointed committee of known climate alarmists, selectively appointed ... to further the cause of global warming alarmism,” he said following today's release of the commission's first report.

“I think everybody should take anything they say with a grain of salt,” Senator Minchin said. “What's most offensive is (climate commissioner) Will Steffen suggesting the scientific debate is over. “That's nonsense because there is a very lively scientific debate about the role of human-induced Co2 emissions in climate change.”

The Climate Commission report says the world has at best 10 years to cut carbon emissions or it will face dangerous atmospheric warming and sea level rises. [They have been putting out these 10 year warnings for years -- and none of them have ever come true]

Professor Steffen also called today for an end to “fruitless, phoney” debate, saying climate change denial is a luxury the world can no longer afford.

Senator Minchin is retiring in July but he remains a close confidant of Tony Abbott and his views as a party elder are widely sought. He is on the record as being sceptical of mainstream climate science, saying earlier this year he believed the world was more likely to be cooling than getting hotter.

Senator Minchin said the new report did nothing to further Labor's case for a carbon tax. “What I think is most frustrating in all of this is this report provides no basis for Australia acting unilaterally on a carbon tax,” he said.

“Given we are responsible for about one per cent of the world's emissions of CO2 and when it's clear that China's additional emissions over the next few decades will completely swamp any reductions in our emissions, anything Australia does will be utterly pointless and have no impact whatsoever on the global climate.”

Greens senator Christine Milne backed the commission's finding that Australia faced a critical decade on climate change, and also called for an end to the debate over whether climate change is real. “What this report will do is actually help the Australian population see that what we've been having is a phoney debate in Australia that's been run by the sceptics, financed by big business, by coal, by oil around the world,” she said. [Focus on finance rather than on the scientific issues?]


LOL! "Nearly all" Solar panel installations faulty

THE NSW government has ordered a statewide safety audit of solar panels after nearly all rooftop installations inspected were found to be faulty.

A Fair Trading report, obtained by News Limited, found nearly every installation under the contentious Solar Bonus Scheme was faulty and one third suffered from serious electrical defects.

Inspectors would be conducting further audits, particularly in Sydney and the Blue Mountains, Fair Trading deputy commissioner Steve Griffin told News Limited.

NSW Fair Trading Minister Anthony Roberts has ordered the review, comparing the solar panel installations to federal Labor's failed pink batts scheme. "Not only was Labor's solar bonus scheme a financial disaster for the state, it has clearly resulted in significant problems for people who raced to get panels on their roofs to cash in on the lucrative rates being offered," Mr Roberts told News Limited.

The audit by Fair Trading focused on installations in Port Macquarie, uncovering 29 per cent had potentially life-threatening electrical defaults and 64 per cent were in breach of the Home Building Act.

Premier Barry O'Farrell faces an uphill battle in parliament to push through legislation to slash the feed-in tariff for subscribers to curb a $759 million budget blowout to the scheme.



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1 comment:

NikFromNYC said...

"Duh! Oceans Drive Climate (Not CO2)"

Oh but this is bad news for climate modelers since ocean current changes are very likely chaotic and thus unpredictable. And since temperatures have already climbed for about three centuries, we are likely in for a sudden plunge.