Posted on May 23, 2015 by Bob Berwyn
Study shows widespread, simultaneous ice shelf melting
Satellite data shows sudden shift in ice shelf dynamics along the southern Antarctic Peninsula. @berwyn photo.
FRISCO — Along with studies showing dramatic changes in individual ice shelves in Antarctica, new research shows widespread changes in the region since 2009. Up until then, the Southern Antarctic Peninsula showed no signs of change.
But suddenly, multiple glaciers along a vast coastal expanse, measuring some 750km in length, suddenly started to shed ice into the ocean at a nearly constant rate of 60 cubic kilometers, or about 55 trillion liters of water, each year. This makes the region the second largest contributor to sea level rise in Antarctica and the ice loss shows no sign of waning. Continue reading
Filed under: Antarctica, climate and weather, Environment, global warming | Tagged: Antarctica, climate change, climate tipping point, global warming, sea level rise | Leave a comment »
Posted on May 21, 2015 by Bob Berwyn
Extreme storms can happen outside expected times
FRISCO — A new study led by Colorado-based scientists seems to reinforce the old saying that, when it comes to the state’s weather, there’s no such thing as normal.
The research aimed to track seasonal and geographical patterns of extreme weather events, especially the monster storms that create headaches for emergency responders and resources managers. But pinpointing those trends is not easy the weather experts found. Continue reading
Filed under: climate and weather, Colorado, extreme weather, seasons, Summit County snow and weather | Tagged: climate change, Colorado, Colorado flooding, Colorado weather, extreme weather | 2 Comments »
Posted on May 20, 2015 by Bob Berwyn
A warming Arctic is changing the configuration of the jet stream, which affects mid-latitude weather. GRAPHIC COURTESY NOAA.
‘Too soon to tell …’
*More Summit Voice stories on this subject are here
FRISCO — There’s been lots of speculation and some early research on a possible link between soaring temperatures in the Arctic and extreme weather in North America and Europe, but the jury is still out, according to scientists with the National Oceanic and Atmospheric Administration.
NOAA’s James Overland was part of an international team that took a close look at possible connections and concluded that more research is needed.
“We are in the pre-consensus stage of a theory that there are links between the rapid warming of the Arctic and some severe weather events since 2007,” said Overland, lead author of the new study, “The melting Arctic and Mid-latitude weather patterns: Are they connected?” Continue reading
Filed under: Arctic, climate and weather, climate change, extreme weather, global warming | Tagged: Arctic amplification, climate change, extreme weather, global warming, Jet stream | 3 Comments »
Posted on May 19, 2015 by Bob Berwyn
Year to-date is record warm
Only a few small areas of the globe were cooler than average in April 2015.
FRISCO — April’s globally averaged temperature was the fourth-warmest on record, at 1.33 degrees Fahrenheit above the 20th century average, according to federal climate trackers releasing the monthly Global State of the Climate update. Continue reading
Filed under: climate and weather, climate change, global warming | Tagged: April 2015 global temperatures, climate change, global warming | 2 Comments »
Posted on May 19, 2015 by Bob Berwyn
‘In their development plans, power providers are not taking into account climate change impacts …’
Renewable energy sources may be less susceptible to climate change impacts.
FRISCO — The Western power grid is vulnerable to projected global warming impacts, and should be climate-proofed to minimize the risk of future power shortages, according to a new study by two Arizona State University engineers.
Their findings show that extreme heat waves and droughts and related changes in precipitation, air and water temperatures, air density and humidity, are all factors in the energy equation, and that those changes could significantly constrain the energy generation capacity of power plants. Continue reading
Filed under: climate and weather, climate change, energy, extreme weather, global warming | Tagged: climate change, climate change impacts, energy, global warming, renewable energy, western power grid | Leave a comment »
Posted on May 17, 2015 by Bob Berwyn
Bull trout in the Columbia River Basin. USGS photo.
Warming water, more winter flooding not a good combination for fish
FRISCO — A native western trout species that’s been listed as endangered since 1998 will likely be further threatened by global warming, according to biologists, who found that genetic diversity in bull trout is lowest where stream temperatures are warmest and winter flooding is highest.
With these trends predicted to continue, a new U.S. Geological Survey-led study suggests that the species is more susceptible to climate change than previously thought. Continue reading
Filed under: climate and weather, climate change | Tagged: Bull trout, climate change, endangered species, Environment, genetic diversity, global warming | Leave a comment »
Posted on May 16, 2015 by Bob Berwyn
Scientists say disintegration of Larsen B remnant will speed glaciers, raise sea level
Icebergs floating along the coast of the Antarctic Peninsula. @bberwyn photo.
FRISCO — There’s more meltdown news from Antarctica. Despite a trend of expanding sea ice in the past few years, the all-important coastal ice shelves, which regulate the flow of continental ice to the sea, are in trouble.
Last week, researchers with the British Antarctic Survey said they measured incredibly fast thinning of the Larsen C Ice Shelf, warning that the massive sheet of floating ice could crumble suddenly and without much warning. Those findings reflect the more widespread trend of ice shelf thinning around the continent, tracked in another comprehensive NASA-led study.
And in the same region, along the eastern coast of the Antarctic Peninsula, a new NASA study suggests that remnants of the previously collapsed Larsen B Ice Shelf probably won’t last much longer. Continue reading
Filed under: Antarctica, climate and weather, climate change, global warming | Tagged: Antarctica, climate change, global sea level rise, global warming, Larsen B ice shelf, Larsen C Ice Shelf | Leave a comment »