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Ancient Forest Emerges Mummified From the Arctic

By Guest PostDecember 17, 2010Environment, Sciencealberta, Arctic, arctic biodiversity, arctic ice, atmosphere, birch, branches, canada, carbon dioxide, david elliot, ellesmere island, ellesmere island national park, global cooling, global warming, joel barker, landslide, melt, melting glacier, methane, mummified forest, North America, ohio state university, organic material, pollen, spruce, tree trunks

SAN FRANCISCO — The northernmost mummified forest ever found in Canada is revealing how plants struggled to endure a long-ago global cooling.

Researchers believe the trees — buried by a landslide and exquisitely preserved 2 to 8 million years ago — will help them predict how today’s Arctic will respond to global warming.

They also suspect that many more mummified forests could emerge across North America as Arctic ice continues to melt. As the wood is exposed and begins to rot, it could release significant amounts of methane and carbon dioxide into the atmosphere — and actually boost global warming. (more…)

Projected Losses of Arctic Sea-Ice and Polar Bear Habitat may be Reduced if Greenhouse Gas Emissions are Stabilized

By Guest PostDecember 16, 2010Environment, NatureArctic, arctic ocean, Arctic sea ice, atmospheric co2, average global temperature, current co2 levels, emissions, global, greenhouse gas, jessica k robertson, linear, modeling, modeling study, patrick Kelley, polar bears, sea ice habitats, sea ice loss, steve amstrup, usgs

ANCHORAGE, Alaska – Sea-ice habitats essential to polar bears would likely respond positively should more curbs be placed on global greenhouse gas emissions, according to a new modeling study published in the journal, Nature.

The study, led by the U.S. Geological Survey, included university and other federal agency scientists. The research broke new ground in the “tipping point” debate in the scientific community by providing evidence that during this century there does not seem to be a tipping point at which sea-ice loss would become irreversible. (more…)

High-Tech Software and Unmanned Planes Allow Scientists to Keep Tabs on Arctic Seals

By Guest PostDecember 15, 2010Environment, Natureaerial photos, aircraft, Arctic, arctic ringed seal, atmosphere, bearded, bering sea, cameras, climate scientists, earth, elizabeth weatherhead, four species of arctic seals, greenhouse gases, ice floes, marine, noaa, novel project, peter boveng, polar ecosystems, ribbon seals, ringed, scan eagle, sea ice, seal populations, seals, spotted, temperatures, terrestrial mammals

A novel project using cameras mounted on unmanned aircraft flying over the Arctic is serving double duty by assessing the characteristics of declining sea ice and using the same aerial photos to pinpoint seals that have hauled up on ice floes.

The project is the first to use aircraft to monitor ice and seals in remote areas without putting pilots and observers at risk, said Elizabeth Weatherhead of the University of Colorado at Boulder, who is leading the study team. Weatherhead is a senior scientist at the Cooperative Institute for Research in Environmental Sciences, a joint venture of CU-Boulder and the National Oceanic and Atmospheric Administration. (more…)

Climate Change May Create Tipping Points for Populations, Not Just Species

By Guest PostOctober 23, 2010Environmentalpine, Arctic, biological effects of climate change, climate change, climate warms, daniel doak, duke university, earth, ecological challenges, ecologist, mountains of colorado, national science foundation, new mexico, nsf, plants, plants and animals, saran twombly, william morris

*Researchers measure survival, reproduction of thousands of arctic and alpine plants over six years*

As Earth’s climate warms, species are expected to shift their geographical ranges away from the equator or to higher elevations.

While scientists have documented such shifts for many plants and animals, the ranges of others seem stable. (more…)

Who Gains Profit from Global Warming Myth?

By PravdaSeptember 13, 20101 commentGeneralAntarctic, anton evseyev, Arctic, atmosphere, australian, chukchi, chukotka, CO2, earth, global climate processes, global warming, greenhouse effect, greenhouse gases, hot summer, hypothesis, man-made CO2, melting of ice, meteorologist, phytoplankton, pravda, pythagorean theorem, russia, shaman, southern hemisphere, weather station

The unusually hot summer that devastated Russia this year once again reminded of a trendy horror story called “global warming.” Proponents of this hypothesis, talking about their cause, have entirely lost sight of an abnormally cold winter in the Southern Hemisphere. Their opponents said that single point cannot be used for plotting. However, reasonable arguments both for and against the warming have not been presented to the general public.

There is an old joke about a weather station in Chukotka.

(more…)

‘Arctic Climate May be More Sensitive to Warming than Thought’

By Guest PostJuly 6, 2010Environmentanthropogenic greenhouse, Arctic, ashley ballantyne, atmospheric, beaver pond site, british columbia, canada, carbon dioxide, dara finney, ecosystem, ellesmere island, geology, natalia rybczynski, permineralization, pliocene, strathcona fiord, vancouver

A new study shows the Arctic climate system may be more sensitive to greenhouse warming than previously thought, and that current levels of Earth’s atmospheric carbon dioxide may be high enough to bring about significant, irreversible shifts in Arctic ecosystems.

(more…)

Petroleum in the Arctic

By ShamsJuly 24, 2008EnvironmentArctic, oil and gas reserves, U.S. Geological Survey

Technically recoverable oil and gas reserves are surveyed in the Arctic by the U.S. Geological Survey.

(more…)

Tag Archives: Arctic

Ancient Forest Emerges Mummified From the Arctic

Projected Losses of Arctic Sea-Ice and Polar Bear Habitat may be Reduced if Greenhouse Gas Emissions are Stabilized

High-Tech Software and Unmanned Planes Allow Scientists to Keep Tabs on Arctic Seals

Climate Change May Create Tipping Points for Populations, Not Just Species

Who Gains Profit from Global Warming Myth?

‘Arctic Climate May be More Sensitive to Warming than Thought’

Petroleum in the Arctic