Category: climate change

We’re losing the global warming poker game

Greenhouse gases tilt odds toward record warmth

June 2017 was another near-record warm month around the globe.

Staff Report

It’s highly unlikely Earth would have seen a three-year run of record global temperatures without its blanket of human-caused greenhouse gases, scientists concluded in a new study that tried to pin down the relationship between record warmth and human-caused global warming.

Without the warming effect of carbon dioxide, methane and other heat-trapping pollutants, there’s only a 0.03 percent chance that there would be three consecutive years of record temperatures; when the warming effects of greenhouse gases are added into the equatio, the odds of three consecutive record-breaking years happening any time since 2000 rises to as high as 50 percent, according to the new study. Continue reading “We’re losing the global warming poker game”

Advertisements

Study documents shrinking Alaska snow season

Winter comes later, spring sooner along the North Slope of AK

A January 2011 image from the NASA Earth Observatory library shows Alaska completely covered with snow.

Staff Report

The snow season is getting shorter in one of the coldest parts of the U.S. On Alaska’s North Slope, snow is piling up later in the fall and melts earlier in the spring, climate change that is having consequences for communities and ecosystems. Continue reading “Study documents shrinking Alaska snow season”

Sunday set: Bugs on blooms

In the woods …

It’s mid-summer, so all the bugs and plant are engaged in their eternal dance of life, with flowers blooming and pollinators doing their thing, all setting the stage for the next act of the play. But as you may or may not know, global warming has thrown many of these cycles out synch. Some of the best long-term research on this topic comes from the Rocky Mountain Biological Laboratory in Crested Butte, where scientists have shown how the shifting seasons are affecting butterflies and hummingbirds.

And when it comes to climate change, nature is kind of the opposite of Las Vegas. What happens there doesn’t stay there. All of nature is interconnected, so you can be sure that impacts to one part of the ecosystem will ripple through all the other parts eventually. The cycle of blooming plants and pollinating insects is so critical that there is actually a potential threat to food systems for humans. That doesn’t mean that we might not be able to address some of those challenges with technology or other innovations, but that’s bound to be expensive. It’s probably best to try and maintain natural ecosystem functions as best as we can by limiting global warming. And even if we do that right away, we’re still going to see some long-term impacts based on the warming that’s already locked into the climate system.

Vail Resorts targets zero emissions by 2030

Can the Colorado-based ski company lead the industry to a sustainable future?

The ski slopes of Breckenridge, one of the Vail Resorts-owned ski areas planning to cut its operational carbon footprint to zero by 2030. @bberwyn photo.

Staff Report

In what may be a game-changer for the ski industry, Vail Resorts has announced that it wants to cut greenhouse gas emissions from its operations to zero by 2030, a goal even more ambitious than the global targets of the 2015 Paris climate agreement.

“Through improved business practices, capital investment and continued innovation and environmental stewardship, we are setting a goal of achieving a zero net operating footprint by 2030,” said Vail Resorts chairman and CEO Rob Katz. Continue reading “Vail Resorts targets zero emissions by 2030”

Swallowed by rising seas

Sea level rise is very real in western Louisiana

Coastal forests in Louisiana are being drowned as the ground sinks and sea level rises. @bberwyn photo.
Coastal flooding is nearly a daily reality in parts of Louisiana. @bberwyn photo.

Staff Report

Big chunks of Louisiana’s coast will be swallowed by the sea within decades unless there’s a major effort to rebuild wetlands. Over the last six to 10 years, sea level has been rising about .5 inches per year on average in the region, according to Tulane University researchers, who recently published a new study in the journal Nature Communications .

“In the Mississippi Delta, about 65 percent of study sites are probably still keeping pace, but in the westernmost part of coastal Louisiana, more than 60 percent of sites are on track to drown,” said Tulane geology professor Torbjörn E. Törnqvist, a co-author of the study. Continue reading “Swallowed by rising seas”

Is global warming changing the Southwest monsoon?

Study shows more intense but less frequent storms

Monsoon precipitation is an important part of the water cycle in the dry western half of the U.S. so climate scientists are trying to figure out global warming will affect the pattern. @bberwyn photo.

An international research team says monsoon storms in the Southwest have become less frequent but more intense, bringing more extreme wind and rain to central and southwestern Arizona than just a few decades ago.

The study, led by scientists with the University of Arizona, compared precipitation records from 1950 to 1970 with data from the 1991-2010 period to verify their climate model, scaled down to capture changes at a resolution of 1.5 square miles. At that level of detail the changes over time became apparent, while models using a 10 square mile grid aren’t able to accurately recreate the precipitation trends. Continue reading “Is global warming changing the Southwest monsoon?”

Is global warming killing bees?

Study finds 15 common bee species suffer as temps rise

A common bumblebee visits a garden in Vienna, Austria. @bberwyn photo.

Staff Report

The urban heat island effect isn’t just bad for people — it’s also harming bees, according to a new study from North Carolina State University.

“We looked at 15 of the most common bee species in southeastern cities and – through fieldwork and labwork – found that increasing temperatures in urban heat islands will have a negative effect on almost all of them,” said associate entomology professor Steve Frank. Continue reading “Is global warming killing bees?”