Tag: climate change

Southern Colorado Plateau has dried 17 percent since 1985

New study projects impacts for world’s drylands

Hikers enjoying the view at Colorado National Monument, near Grand Junction. Researchers say recreation economies in the world’s drier zones are likely to take a big hit from global warming in the next few decades. @bberwyn photo.

Staff Report

Global warming is bad enough on its own for the world’s drylands, but when you add in the impacts of population growth, development and the increasing demand for water, the future looks downright grim.

The end result will be conditions that are detrimental to the recreation economy, wildlife habitat, water availability and other resources in hyper-arid landscapes, according to a recent paper published in Ecosphere. Drylands are of concern because broad-scale changes in these systems have the potential to affect 36 percent of the world’s human population. Continue reading “Southern Colorado Plateau has dried 17 percent since 1985”

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Global warming drives more extreme rainfall

Summer rainstorm in the Rocky Mountains. @bberwyn photo.

New study pinpoints regional patterns in changes

Staff Report

Basic physics tells us a warmer atmosphere can hold more moisture, and that, at some point, that moisture will condense and fall as rain. That’s why climate scientists are certain that global warming will lead to more extreme rainfall, as has already been documented in various parts of the world the past few decades.

A new study now helps quantify the impact of warming and also reveals regional patterns that will help people prepare. According to the researchers with MIT and the Swiss Federal Institute of Technology, the most extreme rain events in most regions of the world will increase in intensity by 3 to 15 percent, depending on region, for every degree Celsius that the planet warms. Continue reading “Global warming drives more extreme rainfall”

Antarctica is melting all over

No ice build-up in East Antarctica, new study says

Antarctica permafrost
Antarctica is melting all over. @bberwyn photo.

Staff Report

Despite some suggestions that increased has bolstered the vast East Antarctic ice sheet, it appears the frozen continent is still shedding ice and has been a net contributor to sea level rise since at least 2003.

There’s been little doubt during the last decade that the West Antarctic Ice Sheet has been losing mass, but the picture has been much less clear to the east, where there’s enough ice to raise global sea level by some 50 meters. One study led by NASA researchers in 2015 suggested that this part of Antarctica was gaining so much mass that it compensated for the losses in the west. Continue reading “Antarctica is melting all over”

April ends up as second-warmest on record for Earth

Will El Niño re-emerge?

The Copernicus Climate Change Service says April 2017 was the second-warmest April on record.

Staff Report
European climate trackers say that April extended a stretch of exceptionally warm global weather going back to mid-2015. The warmth peaked in February 2016 at the height of Pacific Ocean El Niño, then gradually dropped off through June. But in July and August 2016 global temperatures surged upward once again and have stayed high since, according to the latest update from the Copernicus Climate Change Service.

February and March 2017 were the most anomalous months since April 2016. April 2017 was less extreme, but the average global temperature was still 0.51 degrees Celsius warmer than the average between 1981 and 2010 and the second-warmest April on record for the planet. Continue reading “April ends up as second-warmest on record for Earth”

U.S. Supreme Court rejects fossil fuel industry effort to remove protection for threatened polar bears

Polar bears will keep their endangered species status. Photo by Eric Regehr, U.S. Fish and Wildlife Service.

Global warming seen as main threat to Arctic predators

Staff Report

Endangered Species Act protection for polar bears will remain in place following a U.S. Supreme Court decision late last week to reject an attempt by the fossil fuel industry to overturn the 2010 listing.

At issue was a decision by the U.S. Fish and Wildlife Service’s to designate more than 120 million acres as critical habitat in Alaska for imperiled polar bears. The Supreme Court decision came just days after President Trump issued an executive order that attempts to rescind a ban on new offshore oil drilling in the Arctic and Atlantic oceans. Continue reading “U.S. Supreme Court rejects fossil fuel industry effort to remove protection for threatened polar bears”

Global warming threatens key ocean bacteria

Loss of nitrogen-fixers would ripple through ocean ecosystems

Increasing CO2 concentrations may threaten fundamental ocean chemistry. @bberwyn photo.

Staff Report

In another sign that greenhouse gas emissions are going to fundamentally affect ecosystems in ways that we are just beginning to understand, a team of researchers has shown that bacteria in the ocean are losing their ability to fix nitrogen.

The study, published in the journal Science, took a close look at a type of cyanobacteria called Trichodesmium, which through nitrogen fixation, Trichodesmium converts nitrogen gas into ammonia and other molecules that organisms need for survival. Continue reading “Global warming threatens key ocean bacteria”

EPA removes web pages with climate change information

Will updates reflect real science, or ideology?

Many of the previously existing pages on climate science, greenhouse gases and global warming impacts are no longer available at the current EPA website.

By Bob Berwyn

Continuing its Orwellian policies of trying to create an alternative, fact-free reality, the Trump administration has started to remove climate-related information from the EPA website. As of Friday, April 28, a Google search for EPA climate information leads to a page-update notice, including a statement from a politically appointed spokesperson saying,” “We want to eliminate confusion by removing outdated language first and making room to discuss how we’re protecting the environment and human health by partnering with states and working within the law.” Continue reading “EPA removes web pages with climate change information”