Average temperature for the month more than 6 degrees above the historic norm
The deadly heatwave that spread across the southwestern U.S. in June also brought a new record high average temperature to Death Valley, one of the hottest places on Earth. According to the National Park Service, last month was the warmest June on record in the national park, with the average temperature for the whole month registering at 101.9 degrees Fahrenheit — about 6 degrees above the long-term average.
Death Valley’s average daily high temperature this June was 115.5 degrees Fahrenheit and the average overnight low was 88.2 degrees. In spite of a record-setting average temperature, Death Valley only set a new daily record one day last month, with 126 degrees recorded on June 21, 2016. The highest temperature ever recorded in Death Valley in June was just a few years ago: 129 degrees on June 30, 2013. Continue reading “Climate: Death Valley sets heat record in June”→
Continued illegal gill net fishing cited in push for ban on Mexican seafood
In what could be a last-ditch effort to save imperiled vaquita in the Gulf of California, conservation advocates are urging the Obama administration to launch economic sanctions against Mexico to halt that country’s trade in totoaba. According to the Center for Biological Diversity, the sanctions would be justified because Mexico is violating the Convention on International Trade in Endangered Species (CITES) by not enforcing the ban on totoaba trade.
New growth in delta could offset CO2 released from riverbed
Human management of natural ecosystems always has unintended consequences, and the Colorado River is no example. After decades of intense dam building and diversions, the mighty river is a mere shadow of it former self, reduced to a trickle in some places and polluted by return flows in others. Along its entire length, ecosystems, including riparian zones and native fish, have suffered, with some of the biggest impacts in the Colorado River delta.
In an effort to restore at least some key reaches of the river, scientists and water managers have teamed up to try mimic some of the Colorado’s natural functions, with controlled releases of water to build up beaches. Those efforts culminated in early 2014 during an eight-week experiment that unleashed a mighty torrent of water from Morelos dam (on the border with Mexico and the USA).
The huge surge (130 million cubic metres) of water raised river levels down to the delta, which has been starved of water for decades. Scientists closely monitored how the release — and potential future releases — affect agricultural crops and natural plant and animal life of the lower delta.
Settlement addresses pesky Adventure Pass fees on 4 Southern California national forests
A long-running and stubborn battle by activists against the spread of public lands access fees has paid off once again in Southern California, where the U.S. Forest Service agreed to designate and mark free parking areas for hikers who aren’t using developed facilities.
The court-sanctioned deal stems from yet another legal battle over federal recreation fees. Public land agencies started charging for access to plug alleged budget holes; public lands advocates have been trying to limit the spread of the fees and make sure they’ve only levied in the places specifically authorized by Congress — namely at developed recreation sites, and not just for general hiking access. Continue reading “Court deal a win for fee-free public lands access in SoCal”→
Global warming will irrevocably alter the face of the Earth
Rocky Mountain National Park Pano, mid-summer.
Der Ötscher (1,893M), the easternmost outpost of the Alps in Lower Austria.
Thick ice surrounds a jagged mountain range in south-central Greenland.
A popular local swimming hole along the Danube River in the town of Greifenstein, near Vienna.
An arch iceberg in the Antarctic Sound.
The more I report on climate change and the environment, the more I learn to cherish the landscapes that I see, because it’s really starting to sink in that humankind, during this Anthropocene Age, is fundamentally changing Earth’s ecosystems, altering the climate and impacting the landscape on levels seem almost inconceivable.
Study identifies bleaching and mortality thresholds for imperiled coral reefs
The steady rise in ocean temperatures projected for the next few decades will put more and more corals at risk of bleaching, as the warm water simply overwhelms their thermal tolerance mechanisms.
Recent research along the Great Barrier Reef shows that corals have been able to survive past bleaching events because they were acclimated to warmer temperatures by being exposed to a pattern of gradually warming waters in the lead up to each episode. But global warming is likely to change that, the scientists said.
Before long, temperature increases of as little as 0.5 degrees Celsius may push many corals over the edge as the warm water causes them to expel the algae-like dinoflagellates that help keep them alive and give them their color.
Lead author Dr. Tracy Ainsworth from Coral CoE said bleaching is like a marathon for corals.