Posted on September 20, 2014 by Bob Berwyn
Alpine country warming faster than global average
A map showing the changing climate suitability for different varieties of grapes suggests how the country’s climate is going to warm in coming decades.
By Summit Voice
FRISCO — Austria is one of Europe’s climate change hotspots, scientists said last week as they released a comprehensive climate assessment showing that temperatures in the alpine country are climbing much faster than the global average.
“Already by now, Austria has warmed by 2 degrees Celsius in contrast to the rest of the world, with 0.85 degrees Celsius,” said project leader Nebojsa Nakicenovic, deputy director of the Vienna-based International Institute for Applied Systems Analysis.
Not surprisingly, the warming has also lead to a big jump in the average temperatures of Austria’s lakes and rivers, which since the 1980s, warmed by 1.5 degrees in summer and 0.7 degrees Celsius in winter, according to the assessment. Continue reading
Filed under: climate and weather, extreme weather, global warming | Tagged: Austria, Austrian Assessment Report, climate change, global warming, IIASA | 2 Comments »
Posted on September 18, 2014 by Bob Berwyn
2014 on track to be one of the warmest years ever
August 2014 was record warm.
FRISCO — Planet Earth was record warm in August 2014, National Oceanic and Atmospheric Administration scientists said Thursday, explaining that warm oceans continue to drive temperatures around the world to the highest levels seen since observations started more than 100 years ago. Continue reading
Filed under: climate and weather, global warming | Tagged: August 2014 global temperatures, August record warm, climate change, global warming, NOAA | Leave a comment »
Posted on September 17, 2014 by Bob Berwyn
Coral growth is slowing dramatically along parts of the Great Barrier Reef. Photo courtesy NOAA.
Will the world’s coral reefs simply dissolve as oceans become more acidic?
FRISCO — Scientists monitoring the Great Barrier Reef said they’ve tracked a “perilous” 40 percent slowdown in coral growth rates since the 1970s.
The trend may be linked with increasing ocean acidification, according to the new study led by researchers with the Carnegie Institution for Science.
The researchers compared current measurements of the growth rate of a section of Australia’s Great Barrier Reef with similar measurements taken more than 30 years ago. Continue reading
Filed under: biodiversity, climate and weather, coral reefs, Environment, global warming, ocean acidification | Tagged: carbon dioxide, climate change, CO2, coral reefs, greenhouse gases, ocean acidification | 1 Comment »
Posted on September 15, 2014 by Bob Berwyn
August 2014 global temperatures were more than 1 degree Fahrenheit above the 20th century average. Map courtesy NASA.
Down-scaled climate modeling suggests sugar maples will probably persist for a while
FRISCO — New downscaled climate models for Vermont suggest that the state will probably be able to produce maple syrup in the coming decades, but the distribution of best habitat for sugar maples will shift, and average temperatures will increase by 5 degrees Fahrenheit by 2050.
By late in the century, Vermont’s average temperature will increase by 8 degrees Fahrenheit, adding 43 days to the growing season — and 10 additional days with temps above 90 degrees in Burlington, while snowfall is likely decrease by 50 percent at six major ski resorts, according to a team of scientists who recently published states-specific projections in the Journal of Applied Meteorology and Climatology. Continue reading
Filed under: climate and weather, Environment, global warming, Snow and weather | Tagged: climate change, global warming, skiing, Vermont | Leave a comment »
Posted on September 15, 2014 by Bob Berwyn
The lionfish are coming, for better or worse.
New study takes detailed look at changing ocean temperatures
FRISCO — Careful study of ocean temperatures shows how tropical fish are likely to expand northward along the Atlantic coast into the temperate ocean zone off the Carolinas. Invaders could include the poisonous lionfish, which is already causing problems on coral reefs in the Caribbean.
Researchers with NOAA and the University of North Carolina-Wilmington combined year-round bottom water temperature data with 2006-2010 fish community surveys in water depths from 15 to 150 feet off the coast of North Carolina. The study revealed that the fish community was primarily tropical in the deeper areas surveyed, from 122 to 150 feet, with a winter mean temperature of 21 degrees Celsius (69.8 degrees Fahrenheit).
Many of the native tropical fishes, usually abundant in shallow, somewhat cooler reefs, tended to remain in the deeper, warmer water, suggesting that temperature is a main factor in controlling their distribution. The findings were published in the September issue of Marine Ecology Progress Series. Continue reading
Filed under: biodiversity, climate and weather, coral reefs, Environment, global warming, invasive species | Tagged: climate change, global warming, invasive species, oceans | Leave a comment »
Posted on September 13, 2014 by Bob Berwyn
Major research project to examine carbon cycling, circulation dynamics
A new research project will help explain how the Southern Ocean helps regulate the global climate. bberwyn photo.
FRISCO — Even though it’s eparated from the rest of the world’s oceans by a strong circulation of currents and a distinct temperature gradient, the Southern Ocean is known to be a key driver of global climate and carbon cycles.
Climate researchers and oceanographers may soon know a lot more about the enigmatic ocean as they deploy hundreds of robotic floats deployed around Antarctica in a six-year, $21 million research project aimed at understanding ocean dynamics, chemistry and carbon cycling. The new instruments will increase the flow of Southern Ocean data 30-fold. Continue reading
Filed under: Antarctica, climate and weather, Environment, global warming, ocean acidification | Tagged: carbon cycle, climate, global warming, Southern Ocean | Leave a comment »