About these ads

Will global warming wipe out Devils Hole pupfish?

i;ou

Devils Hole pupfish — a poster child for climate extinction? Photo courtesy USFWS.

Rare fish species in steep decline as global, regional temperatures soar

Staff Report

FRISCO — Rare fish living in desert freshwater springs in Nevada may be adapted to warm weather, but they may not be able to survive long-term global warming, researchers said this week, outlining the threats facing endangered Devils Hole pupfish.

At times, the population of the fish has been as low as just 35 individuals, and the geothermal water on a small shelf near the surface of an isolated cavern in the Nevada desert where the pupfish live is heating up as a result of climate change and is likely to continue heating to dangerous levels.

From the 1970s through the mid-1990s, the population appeared stable, but 1997 marked the start of a long-term decline that is probably linked with global warming, according to scientists who closely watch the fish. The population dropped to an all-time low of just 65 fish in the fall of 2013, with a further decline expected this year that will push the species toward extinction. Continue reading

About these ads

Climate: Coastal threats should be tackled now

Sea level is rising, and will continue to rise for centuries even if we cut greenhouse gas emissions.

Sea level is rising, and will continue to rise for centuries even if we cut greenhouse gas emissions.

Addressing non-climatic impacts will improve long-term resilience

Staff Report

FRISCO — From mountains, forests and rivers down to the seashore, a common theme among researchers is that, in many places, human impacts stemming from land use and development still outweigh the global warming signal.

That includes coastal regions, were there is an immediate need to tackle the threats from non-climatic changes, an international research team said this week after a detailed review of Intergovernmental Panel on Climate Change assessments. Continue reading

Climate study explores link between El Niño, the polar vortex and extreme cold outbreaks in Europe

Cold snaps more likely during El Niño winters

anomnight.current.small

How does El Niño affect weather in Europe?

Staff Report

FRISCO —El Niños don’t just affect anchovy fishermen in Peru and the ski resorts of the Sierra Nevada. The somewhat cyclical variation in equatorial Pacific sea surface temps can shift weather patterns worldwide, including in Europe, which may be more susceptible to extreme cold outbreaks in El Niño years, according to a new study led by a University of Colorado, Boulder researcher.

Other research has hinted at the connection, but the new paper is the first to show that El Niños might be linked with Sudden Stratospheric Warming events, when temperatures high in the atmosphere change radically, affect the polar vortex, a belt of winds that form a boundary between the cold Arctic and the temperate mid-latitudes. Sudden Stratospheric Warming weakens those winds, often leading to outbreaks of bitter cold Arctic air across Europe and possibly the eastern U.S. Continue reading

Morning photo: Cloudplay IV

Seasonal shift

I could feel this rainbow before it appeared as an intense afternoon thunderstorm moved from west to east across Summit County. Since it was mid-afternoon, the sun was relatively high, making for a low-slung rainbow.

I could feel this rainbow before it appeared as an intense afternoon thunderstorm moved from west to east across Summit County. Since it was mid-afternoon, the sun was relatively high, making for a low-slung rainbow.

FRISCO — It’s not even September yet, but the skies over the Colorado high country have taken on a definite tinge of autumn, even bringing a few early dustings of snow, or a snow and hail mix to the highest peaks. I’m not going to post any snow shots yet; there’s plenty of time for that in the months ahead, but you should be able to feel the transitioning seasons in some of these late summer shots. It’s an awesome month for rainbows, as long as the monsoon moisture continues to stream into Colorado, so keep your camera handy and send us your best rainbow shot. We’ll post it in one of our photo essays. Follow our Instagram fee for daily updates, and visit our online gallery to buy fine art Colorado landscape prints and greeting cards. Continue reading

Climate: Greenhouse gas buildup ‘loads the dice’ for Southwest megadroughts

Odds of 30-year dry spells increase dramatically as global temps rise

'j

Green bars indicate wet periods, the larger the bar the more unusually wet. In a similar way, yellow indicates dry and droughty periods. The graph stretches from January 1895 on the left to last month on the right, showing how the cycle of droughts alternating with wet years has changed, with dry years becoming more prevalent.

By Summit Voice

FRISCO — Tree ring records clearly show that the southwestern U.S. experienced megadroughts long before the anthropogenic global warming era. One such decades-long dry spell may have been a factor in the collapse of the Anasazi civilization at Mesa Verde.

But the steady buildup of heat-trapping gases in the atmosphere is loading the dice in favor of another megadrought sooner, rather later, according to scientists with Cornell University, the University of Arizona and U.S. Geological Survey. The chances of a decade-long drought is now at least 50 percent, and there’s a 20 percent to 50 percent chance of a 30-year megadrought.

“For the southwestern U.S., I’m not optimistic about avoiding real megadroughts,” said Toby Ault, Cornell assistant professor of earth and atmospheric sciences and lead author of the paper. “As we add greenhouse gases into the atmosphere – and we haven’t put the brakes on stopping this – we are weighting the dice for megadrought conditions.” Continue reading

Environment: NOAA lists 20 coral species as threatened under the Endangered Species Act

oj

Widespread threats lead to “threatened” listing for 20 coral species under the Endangered Species Act. Photo courtesy NOAA.

Conservation and recovery plans will be crafted in partnership with coastal communities

Staff Report

FRISCO — Twenty types of coral in the Pacific and Caribbean will be listed as threatened under the Endangered Species Act, federal officials announced this week, citing declines of up to 90 percent in some species. Continue reading

Climate: UK study eyes links between global warming, extreme flooding

An extratropical cyclone

An extratropical cyclone spread heavy rain across the UK in February 2014. Visit this NASA website for more.

More coastal damage likely as rising seas fuel storm surges

Staff Report

FRISCO —British scientists aren’t quite ready to say that last winter’s record flooding is linked with human-caused global warming, but in a recent study published in the journal Nature Climate Change, they warned that more coastal flooding is likely as sea level rises. Continue reading

Follow

Get every new post delivered to your Inbox.

Join 7,395 other followers