Arctic permafrost is already thawing, creating lakes that emit methane. The heat-trapping gas could dramatically accelerate global warming. How big is the threat? What can be done? Methane bubbling up into the atmosphere from thawing permafrost that underlies numerous Arctic lakes appears to be hastening global warming. New estimates indicate that by 2100 thawing permafrost […]
By Staff WritersGeneva (AFP) Nov 23, 2009 Greenhouse gas emissions have kept increasing, reaching a record level since the pre-industrial era, the UN climate agency warned Monday, just weeks before a crucial climate change summit. “Levels of most greenhouse gases continue to increase,” said the World Meteorological Organisation in a statement. “In 2008, global concentrations […]
MOSCOW (AFP) — Thawing permafrost caused by global warming is costing Russian energy firms billions of dollars annually in damage control and shrinking Russia’s territory, Greenpeace warned in a new study Friday. According to the report by the environmental watchdog, up to 55 billion roubles (1.9 billion dollars) a year is spent on repairs to […]
This figure shows the mean extent of permafrost in the Arctic, estimated for (a) the years 1990-2000 and (b) the years 2090-2100. In (c), the estimation of loss of permafrost by 2100 is overlaid on estimates for the year 2000. The Arctic could potentially alter the Earth’s climate by becoming a possible source of global […]
ScienceDaily (Sep. 28, 2009) — Unusually high temperatures in the Arctic and heavy rains in the tropics likely drove a global increase in atmospheric methane in 2007 and 2008 after a decade of near-zero growth, according to a new study. Methane is the second most abundant greenhouse gas after carbon dioxide, albeit a distant second. […]
A rush to extract methane from the depths of Africa’s Lake Kivu could trigger a huge upwelling of suffocating gas, potentially affecting over 2 million people By Shanta Barley BENEATH the shimmering surface of Africa’s Lake Kivu, a deadly time bomb awaits. A “gold rush” to extract valuable methane from the lake’s depths might trigger […]
Unimaginable quantities of methane — a greenhouse gas 20 to 25 times more potent than carbon dioxide — are stored underground in the Arctic. Some of it is leaking out By Bob Weber, The Canadian Press You can see them from shore along the Arctic coast or even in some northern lakes — seething domes […]
KODIAK ISLAND, Alaska, August 24, 2009 (ENS) – Billions of tons of carbon are buried in the frozen Arctic tundra, now heating up because of human-caused climate change. To measure which greenhouse gases are being released and in what quantities, government scientists are flying instrument-laden planes over the tundra from now through November. They say […]
Sonar survey spies mysterious, 1.4-kilometer-tall feature in the depths off California By Sid PerkinsAn oceanographic survey has discovered a 1,400-meter-tall plume rising from the seafloor off the coast of California. Water samples taken at the site, about 32 kilometers northwest of Cape Mendocino, indicate that the feature isn’t mineral-rich water spewing from a hydrothermal vent, […]
The warming of an Arctic current over the last 30 years has triggered the release of methane, a potent greenhouse gas, from methane hydrate stored in the sediment beneath the seabed. Scientists at the National Oceanography Centre Southampton working in collaboration with researchers from the University of Birmingham, Royal Holloway London and IFM-Geomar in Germany […]
