Lubbock, Texas: In light of the dramatic extremes of the last two years... Where are we now in terms of climate, and what is the current research showing us?
Dr. Katharine Hayhoe on the "New Normal":
Medieval Warm Period?
Twentieth-century warming revives the world’s northernmost lake
Bianca B. Perren1,
Alexander P. Wolfe2,
Colin A. Cooke3,
Kurt H. Kjær4,
David Mazzucchi5 and
Eric J. Steig6
Although recent ecological changes are widespread in Arctic lakes, it remains unclear whether they are more strongly associated with climate warming or the deposition of reactive nitrogen (Nr) from anthropogenic sources. We developed a 3500-yr paleolimnological record from the world’s northernmost lake to explore this question. Microfossils indicate that siliceous diatoms and chrysophytes were abundant initially, but disappeared 2400 yr ago in concert with Neoglacial cooling. Microfossils reappear in 20th-century sediments and reach unprecedented concentrations in sediments deposited after ca. A.D. 1980, tracking increasing summer temperatures in the absence of evidence for atmospheric nutrient subsidies. These results indicate that current warming in northern Greenland is unprecedented in the context of the past 2400 yr, and that climate change alone is responsible for the marked biological changes observed.
Twentieth-century warming revives the world
Scientific American points out the dangers anti-scientism to American democracy.
IMHO, the rot set set in when Ronald Reagan announced he supported teh teaching of creationism in schools. In doing so, he gave Republicans permission to be actively anti science advocates.It is hard to know exactly when it became acceptable for U.S. politicians to be antiscience. For some two centuries science was a preeminent force in American politics, and scientific innovation has been the leading driver of U.S. economic growth since World War II...
The Founding Fathers were science enthusiasts.
Yet despite its history and today's unprecedented riches from science, the U.S. has begun to slip off of its science foundation. Indeed, in this election cycle, some 236 years after Jefferson penned the Declaration of Independence, several major party contenders for political office took positions that can only be described as “antiscience”: against evolution, human-induced climate change, vaccines, stem cell research, and more. A former Republican governor even warned that his own political party was in danger of becoming “the antiscience party.”
Antiscience Beliefs Jeopardize U.S. Democracy: Scientific AmericanAsked if he personally accepted the theory of evolution, Reagan replied: "I have a great many questions about it. I think that recent discoveries down through the years have pointed up great flaws in it" (Science, 1980, p. 1214).
Mild Little Ice Age and unprecedented recent warmth in an 1800 year lake sediment record from Svalbard
William J. D’Andrea1,*,
David A. Vaillencourt1,
Nicholas L. Balascio1,
Steven R. Roof3,
Michael Retelle4 and
Raymond S. Bradley1
The Arctic region is subject to a great amplitude of climate variability and is currently undergoing large-scale changes due in part to anthropogenic global warming. Accurate projections of future change depend on anticipating the response of the Arctic climate system to forcing, and understanding how the response to human forcing will interact with natural climate variations. The Svalbard Archipelago occupies an important location for studying patterns and causes of Arctic climate variability; however, available paleoclimate records from Svalbard are of restricted use due to limitations of existing climate proxies. Here we present a sub-decadal- to multidecadal-scale record of summer temperature for the past 1800 yr from lake sediments of Kongressvatnet on West Spitsbergen, Svalbard, based on the first instrumental calibration of the alkenone paleothermometer. The age model for the High Arctic lake sediments is based on 210Pb, plutonium activity, and the first application of tephrochronology to lake sediments in this region. We find that the summer warmth of the past 50 yr recorded in both the instrumental and alkenone records was unmatched in West Spitsbergen in the course of the past 1800 yr, including during the Medieval Climate Anomaly, and that summers during the Little Ice Age (LIA) of the 18th and 19th centuries on Svalbard were not particularly cold, even though glaciers occupied their maximum Holocene extent. Our results suggest that increased wintertime precipitation, rather than cold temperatures, was responsible for LIA glaciations on Svalbard and that increased heat transport into the Arctic via the West Spitsbergen Current began ca. A.D. 1600.
High latitude lakes coming back to life, a catastrophic disaster if ever there was one.
1. The IPCC tells us that most of the warming will be at night, in the winter and in the Arctic.
2. The IPCC tells us that in a warmer world there will be more rain.
3. If the models were correct about CO2's climate sensitivity, temperatures should be a lot warmer than they are.
So the lower latitudes aren't suffering and there's no evidence that they will. Sea levels aren't rising like you guys claim, the droughts you guys fret over aren't happening.
This post suggests you need better evidence for number 3: Carbon Dioxide and Temperature | Climate Abyss | a Chron.com blog
I never said the lower latitudes were suffering, I say they inevitably will. But some countries do see the effects of climate change already. How Bangladesh Is Preparing for Climate Change: Scientific American
And the world is looking forward to another years of Mother Nature's bounty: UN warns of looming worldwide food crisis in 2013 | Global development | The Observer
I already posted Professor J. Nielsen-Gammon on the Texas Drought and your refutation was that he used the word "drought" too often. A real knockdown argument, Steve, thousands will be convinced by it.
As for sea level rise, I am afraid your few charts are totally unconvincing. Try these instead:
hahahahahahahahaha Katharine Hayhoe: ,the Evangelical creationist professor, you are desperate these days, this woman just loves fairtytales, lust ask her husband "Pastor Hayhoe" he will tell you all about it.........
You certainly wont catch her talking about the Roman warming period since she belives the earth was even around back then......
Last edited by Pep4321; 22nd October 2012 at 05:35 PM.