Posts

The Big Melt Accelerates.

http://www.nytimes.com/2014/05/20/science/the-melting-isnt-glacial.html By Kenneth Chang, The New York Times. Excerpt: Centuries from now, a large swath of the West Antarctic ice sheet is likely to be gone, its hundreds of trillions of tons of ice melted, causing a four-foot rise in already swollen seas. Scientists reported last week that the scenario may be inevitable, with new research concluding that some giant glaciers had passed the point of no return, possibly setting off a chain reaction that could doom the rest of the ice sheet. For many, the research signaled that changes in the earth’s climate have already reached a tipping point, even if global warming halted immediately. ...A full melt would cause sea level to rise 215 feet. During recent ice ages, glaciers expanded from the poles and covered nearly a third of the continents. And in the distant past there were episodes known as Snowball Earth, when the entire planet froze over. At the other extreme, a warm p...

Hot In My Backyard

http://www.latimes.com/news/science/sciencenow/la-sci-sn-everest-climate-20130514,0,7957473.story Author : Ira Glass Source:  WBEZ, This American Life Topic:  climate change "Podcast - After years of being stuck, the national conversation on climate change finally started to shift — just a little — last year, the hottest year on record in the U.S., with Hurricane Sandy flooding the New York subway, drought devastating Midwest farms, and California and Colorado on fire. Lots of people were wondering if global warming had finally arrived, here at home. This week, stories about this new reality. " For Investigation: 10.3

For Insurers, No Doubts on Climate Change.

http://www.nytimes.com/2013/05/15/business/insurers-stray-from-the-conservative-line-on-climate-change.html Author : Eduardo Porter Source:  New York Times Topic: climate change Excerpt: If there were one American industry that would be particularly worried about climate change it would have to be insurance, right? ...From Hurricane Sandy’s devastating blow to the Northeast to the protracted drought that hit the Midwest Corn Belt, natural catastrophes across the United States pounded insurers last year, generating $35 billion in privately insured property losses, $11 billion more than the average over the last decade. And the industry expects the situation will get worse. “Numerous studies assume a rise in summer drought periods in North America in the future and an increasing probability of severe cyclones relatively far north along the U.S. East Coast in the long term,” said Peter Höppe, who heads Geo Risks Research at the reinsurance giant Munich Re. “The rise in ...

Climate change may be baring Mt. Everest

http://www.latimes.com/news/science/sciencenow/la-sci-sn-everest-climate-20130514,0,7957473.story Author : By Geoffrey Mohan Source:  Los Angeles Times Topic:  climate change, glacier, Himalaya "Excerpt: A warming climate is melting the glaciers of Mount Everest, shrinking the frozen cloak of Earth’s highest peak by 13% in the last 50 years, researchers have found. Rocks and natural debris previously covered by snow are appearing now as the snow line has retreated 590 feet, according to Sudeep Thakuri, a University of Milan scientist who led the research. ...Researchers said they believe the observed changes could be due to human-generated greenhouse gases altering global climate, although their research has not established a firm connection. ...Small glaciers of less than a square kilometer (about 247 acres), are vanishing fastest, registering a 43% decline in surface area since the 1960s. ...“The Himalayan glaciers and ice caps are considered a water tower for Asia s...

New Study: As Climate Changes, Boreal Forests to Shift North and Relinquish More Carbon Than Expected

http://newscenter.lbl.gov/news-releases/2013/05/05/boreal/ Author : Dan Krotz Source:  Lawrence Berkeley National Lab News Center Topic:  forest, climate change Excerpt: ...Boreal forests will likely shift north at a steady clip this century. Along the way, the vegetation will relinquish more trapped carbon than most current climate models predict. ...research is published online May 5 in the journal Nature Geoscience. Boreal ecosystems encircle the planet’s high latitudes, covering swaths of Canada, Europe, and Russia in coniferous trees and wetlands. This vegetation stores vast amounts of carbon, keeping it out of the atmosphere where it can contribute to climate change. ...the Berkeley Lab research tells a different story. The planet’s boreal forests won’t expand poleward. Instead, they’ll shift poleward. The difference lies in the prediction that as boreal ecosystems follow the warming climate northward, their southern boundaries will be overtaken by even wa...

Buzzing about Climate Change

https://earthobservatory.nasa.gov/Features/Bees/bees.php Source:   By Rebecca Lindsey, NASA Earth Observatory For Investigation:   10.3 Excerpt: ...Will Plants and Pollinators Get Out of Sync? ...the changes aren’t just dramatic, they’re also kind of scary. The fertility of most flowering plants, including nearly all fruits and vegetables, depends on animal-mediated pollination. As the pollinators move from flower to flower for nectar--a high-energy, sugary enticement—the plants dust them with pollen, which the animals transfer from flower to flower. “Flowering plants and pollinators co-evolved. Pollination is the key event for a plant and for the pollinators in the year. That’s where pollinators get their food, and that’s what determines whether the plant will set fruit. Some species of pollinators have co-evolved with one species of plant, and the two species time their cycles to coincide, for example, insects maturing from larva to adult precisely when nectar flows beg...