Aerial photos from Greenland topple climate models. Aerial photos from the 1980s and 1990s show that Greenland has lost large quantities of ice before, but also that the ice-mass loss ceased later on.
New research questions the precision of existing climate models. (Photo: Niels Korsgaard, Natural History Museum of Denmark) Scientists have long believed that Greenland’s ice sheet is melting with increasing speed and that this will result in considerable rises in water levels in the world’s oceans over the next 100 years. But the foundation for this view now appears to be completely wrong. In the latest issue of the journal Science, Danish researchers report that Greenland’s ice sheet is not behaving quite as expected – the speed at which the ice disappears rises and falls considerably when measured over the years. The climate models for the influence of melting ice on water levels in the oceans must therefore be revised. Such is the message from the researchers, who are completely aware that they are touching on a controversial subject. How Climate Change Is Changing The Oyster Business : The Salt. Hide captionScientists blame higher levels of carbon dioxide in Pacific Ocean waters caused by global warming for the failure of oyster seeds to thrive in hatcheries.
Eric Risberg/AP Scientists blame higher levels of carbon dioxide in Pacific Ocean waters caused by global warming for the failure of oyster seeds to thrive in hatcheries. Austin Docter has worked at a shellfish plant in Shelton, Wash., for 18 years and has a lot of words to describe what he calls the flavor profiles of oysters: Minerally. Metallic-y. Sweet. "Wherever oysters are grown, they take on the characteristics of the algae and water that they grow up in," Docter says. But the way that oysters grow is changing, especially in the Pacific Northwest, where climate change threatens the hatcheries and nurseries where the little mollusks mature.
While that doesn't mean much for oyster flavor right now, it is adding up to a bit of an identity crisis for the region's aquaculture tradition. Greenland Ice Melt, Measured By NASA Satellites, Reaches Unprecedented Level. Unprecedented melting of Greenland's ice sheet this month has stunned NASA scientists and has highlighted broader concerns that the region is losing a remarkable amount of ice overall.
According to a NASA press release, about half of Greenland's surface ice sheet naturally melts during an average summer. But the data from three independent satellites this July, analyzed by NASA and university scientists, showed that in less than a week, the amount of thawed ice sheet surface skyrocketed from 40 percent to 97 percent. In over 30 years of observations, satellites have never measured this amount of melting, which reaches nearly all of Greenland's surface ice cover. When Son Nghiem of NASA's Jet Propulsion Laboratory observed the recent melting phenomenon, he said in the NASA press release, "This was so extraordinary that at first I questioned the result: Was this real or was it due to a data error? " "One of the big questions is 'What's happening in the Arctic in general?' " Also on HuffPost: Global Warming's Terrifying New Math. Study casts doubt on popular mass extinction theory.
Mussels and other species of sea animals died in large numbers at the end of the Triassic geological period. Scientists are trying to understand why. (Photo: Colourbox) About the time, 201 million years ago, that the super-continent Pangaea – the single land mass made up of all the present continents – started to break up, life on Earth was hit by a severe crisis that killed off numerous animal species. On land, the devastation was not so bad, although many plants did wither and die. Until now, this catastrophe has often been explained by violent volcanic actions started by the break-up of Pangaea. This volcanic activity released both carbon dioxide and methane to the Earth’ atmosphere – greenhouse gases that warmed the climate and possibly caused methane ice at the bottom of the oceans to melt. Both processes might have released so much of the greenhouse gas methane that global warming accelerated.
Findings question widespread theory The underground is a gigantic climate archive. Rise in sea level can't be stopped: scientists. By Nina Chestney LONDON Sun Jul 1, 2012 10:32pm IST LONDON (Reuters) - Rising sea levels cannot be stopped over the next several hundred years, even if deep emissions cuts lower global average temperatures, but they can be slowed down, climate scientists said in a study on Sunday.
A lot of climate research shows that rising greenhouse gas emissions are responsible for increasing global average surface temperatures by about 0.17 degrees Celsius a decade from 1980-2010 and for a sea level rise of about 2.3mm a year from 2005-2010 as ice caps and glaciers melt. Rising sea levels threaten about a tenth of the world's population who live in low-lying areas and islands which are at risk of flooding, including the Caribbean, Maldives and Asia-Pacific island groups. This is because as warmer temperatures penetrate deep into the sea, the water warms and expands as the heat mixes through different ocean regions. 'Hot Spring': Record Temps Herald Era of Warmer World. With the warmest March, third warmest April and second warmest May, the National Oceanic and Atmospheric Administration confirmed on Thursday that the 2012 Spring in the contiguous United States since has been the hottest ever on record.
(Source: NOAA) The spring season's (March-May) nationally-averaged temperature was 57.1°F, 5.2°F above the 1901-2000 long-term average, surpassing the previous warmest spring (1910) by 2.0°F. The nation has experienced since recordkeeping began in 1895, NOAA reported. Reuters reports: Record warmth and near-record warmth blanketed the eastern two-thirds of the country from this spring, with 31 states reporting record warmth for the season and 11 more with spring temperatures among their 10 warmest. "The Midwest and the upper Midwest were the epicenters for this vast warmth," Deke Arndt of NOAA's Climatic Data Center said in an online video.
Agence France-Presse adds: Search Results. Journal home : Nature Climate Change. Climate change makes cod grow. Global warming doesn’t only have negative effects.
A new study shows that the increase in ocean temperatures has caused a sharp increase in the size of North Sea cod. (Photo: Wikimedia Commons) The recent explosive increase in size of the North Sea cod is baffling marine scientists. A new study now claims to have found the cause: global warming. The study has just been published in the international journal Global Change Biology. ”When the seawater gets warmer, all life processes in the cod speed up,” says Peter Grønkjær, an associate professor of marine ecology at the Department of Biological Sciences at Aarhus university, who headed the study. When the seawater gets warmer, all life processes in the cod speed up. Peter Grønkjær “This causes the cod to digest their food faster and makes them convert it into extra muscle tissue.”
Cod were expected to shrink Researchers had anticipated that the North Sea cod would get smaller. Climate change threatens survival of cod These figures showed: Clouds’ Effect on Climate Change Is Last Bastion for Dissenters. Over time, nearly every one of their arguments has been knocked down by accumulating evidence, and polls say 97 percent of working climate scientists now see global warming as a serious risk.
Yet in recent years, the climate change skeptics have seized on one last argument that cannot be so readily dismissed. Their theory is that clouds will save us. They acknowledge that the human release of greenhouse gases will cause the planet to warm. But they assert that clouds — which can either warm or cool the earth, depending on the type and location — will shift in such a way as to counter much of the expected temperature rise and preserve the equable climate on which civilization depends. Their theory exploits the greatest remaining mystery in climate science, the difficulty that researchers have had in predicting how clouds will change.
“Clouds really are the biggest uncertainty,” said Andrew E. Richard S. Dr. Dr. Some politicians have welcomed that message, regularly calling Dr. Dr. Arctic Sea Emits Methane. Atmospheric scientist Eric Kort was flying over the Arctic Ocean three years ago, monitoring readouts as onboard sensors sniffed the air.
Suddenly, as the plane dipped low over some breaks in the sea’s ice cover, those instruments detected the unmistakable whiff of methane, the second most important climate-warming gas associated with human activities. “This was unexpected,” says Kort, of NASA’s Jet Propulsion Laboratory in Pasadena, Calif. On four more excursions north of the Beaufort and Chukchi seas through April 2010 — always in winter or early spring — the plane’s sensors detected the same taint of methane in very-low-altitude air over broken patches of ice, Kort and collaborators report online April 22 in Nature Geoscience.
Computer model predicts tomorrow’s nature. Computers’ powers of calculation have developed considerably in recent years – a situation that researchers have used to create complex simulation models of nature.
The new Danish model is a sort of virtual experiment that is based on reality. Therefore the models offer new possibilities of understanding and predicting changes in the future. (Photo: Colourbox) How will nature be affected if we change agricultural subsidies, use other pesticides or build a motorway? So far, researchers have not had usable tools or information for answering such questions without time-consuming and expensive fieldwork. But this will be easier in the future after researchers at Aarhus University have developed an advanced computer model that makes it possible to simulate various future scenarios in nature, based on the real world. Information about the new computer model has just been published in the scientific journal Ecological Indicators. Based on knowledge about individuals Resembles a computer game. It's Getting Hot in Here: Understanding the Impact of the "Meteorological March Madness" It's going to take some time for science to catch up with what happened this past winter.
For instance, a lot has been made of the "Meteorological March Madness" we just experienced, in which over 15,000 local, all-time warm-weather temperature records were broken across the U.S. What is particularly significant, and alarming, is the broad context of this weather pattern, which is visualized in this animated video below, courtesy of NOAA’s Environmental Visualization Lab. You can see how over the course of the month, the record warm temperatures were not at all geographically isolated, but actually formed a weather pattern that spanned the entire continental U.S.
(Alaska still had a cold one). Watch here (Note: the red dots represent daytime warm temperature records. What's the Big Idea? The ancient practice of forecasting the weather has evolved frustratingly slow over the course of thousands of years. And yet, this does not address the need for accurate long-range forecasting. NOAA: More Than 15,000 Temperature Records Broken In March. Should we blame the Sun? (Photo: NASA) Climate change can be confusing, especially because a number of researchers have criticised the UN Panel on Climate Change (IPCC).
"The effect of solar activity on climate change is one of the issues on which there remains some uncertainty in the IPCC's work," says Kristoffer Rypdal, a physics professor at the University of Tromsø. He is currently debating the issue with physicists Nicola Scafetta and Bruce West. Is the Sun's effect underestimated? In 2008, physicists Nicola Scafetta and Bruce West published an article entitled "Is climate sensitive to solar variability?
" The article argues in support of their hypothesis that there is a subtle complex link between the Sun's activity and variations in the Earth's climate. The two researchers used a statistical review of variations in soil temperature and solar radiation to support their view. The Sun can account for as much as 69 percent of the increase in the Earth's average temperature. Complex relationships Conceptual Confusion. Force of Nature: Watch This Texas Tornado Toss Semi-Trucks Around (Video) Arctic Sea Ice Eyed for Clues to Weather Extremes. On the Brink: Planet Near Irreversible Point of Global Warming. We may have already passed the tipping points on global warming, say scientists at the Planet Under Pressure conference. At the London conference, scientists are giving a bleak view of the future of the planet due to catastrophic damage and growth by humans, saying we are close to the irreversible point of global warming.
Will Steffen, executive director of the Australian National University's climate change institute, gave an urgent warning that humanity needs to act radically on climate change. "We can ... cap temperature rise at two degrees, or cross the threshold beyond which the system shifts to a much hotter state," he said. Bob Watson, former head of the UN's climate panel and chief advisor to Britain's environment ministry, stated that the world has already passed any hope of limiting global warming to two degrees Celsius, and stated that "we just have not acted.
The need for action is becoming more and more urgent with every day that passes. " "System Change Not Climate Change. " Gulf Oil Spill: Coral Death 'Definitively' Linked To BP Spill. NEW ORLEANS (AP) — After months of laboratory work, scientists say they can definitively finger oil from BP's blown-out well as the culprit for the slow death of a once brightly colored deep-sea coral community in the Gulf of Mexico that is now brown and dull.
In a study published Monday, scientists say meticulous chemical analysis of samples taken in late 2010 proves that oil from BP PLC's out-of-control Macondo well devastated corals living about 7 miles southwest of the well. The coral community is located over an area roughly the size of half a football field nearly a mile below the Gulf's surface. The damaged corals were discovered in October 2010 by academic and government scientists, but it's taken until now for them to declare a definite link to the oil spill. Most of the Gulf's bottom is muddy, but coral colonies that pop up every once in a while are vital oases for marine life in the chilly ocean depths. BP did not immediately comment on the study. Also on HuffPost: San Francisco Fights Erosion as Coastal Cities Watch Closely. Unprecedented, "Eye-Popping" Temperatures Soar, Highs Continue.
People from the Midwest and Northeast have been stepping out to record-setting temperatures this month. Meteorologists are calling the temperatures unprecedented. Deke Arndt, who leads the climate monitoring branch of the National Climatic Data Center in Asheville, N.C., said, “This will be a March event that we’ll look back on as one of the big March events of modern history.” And Jonathan Martin, chairman of atmospheric and oceanic sciences at UW-Madison, adds, "This is to me the most unusual weather event I've witnessed in my lifetime. " Weather maps show many areas with temperatures at 30 degrees above normal days in a row.
Compare today's "average" high temperatures to the forecast highs.Is this May or March? Andrew Freedman: Climate CentralHistoric March Heat Wave Sets New Milestones The March heat wave continues to shatter longstanding records from the Upper Midwest to the Northeast, with more than 2,200 warm temperature records set during the month so far.
CO2 is confusing fish. Climate towers in the Faroes? CO2 map provides quality control for climate research. The quest for the lost climate. Rising Sea Levels a Growing Risk to Coastal U.S., Study Says. Kiribati: First Nation to be Swallowed Up by the Sea. Antarctica Visitors Unwittingly Bring Invasive Species. Highway 12, Outer Banks Lifeline, Is Under Siege by Nature. INSURANCE INDUSTRY: Trust Us, Global Warming Is Real. Oceans' Acidity at Highest Point in 300 Million Years. ‘Expect the unprecedented’ Less Sea Ice Brings More Snow.