Ranching, farming groups sue to end legal protections
Wildlife conservation advocates are helping fend off a nuisance lawsuit by a right wing group that seeks to end state endangered species protection for wolves in California. The lawsuit, brought against the California Fish and Wildlife Commission by the Pacific Legal Foundation, falsely claims that wolves are ineligible for state protection. Like many other legal actions filed by the group, this one is aimed mainly at harassing government agencies and others working in the public interest.
U.S. emissions at 1992 level, according to IEA report
Carbon dioxide emissions from the world’s biggest economies — the U.S. and China — dropped in 2016 and didn’t grow in Europe, showing that economic growth can occur without an increase in heat-trapping pollution, according to the latest emissions report from the International Energy Agency.
Scientists are currently mapping the biological damage caused by global warming
At the end of eastern Australia’s long, hot summer, ocean scientists are once again seeing devastating coral die-backs in the northern reaches of the Great Barrier Reef. Over the next few weeks, they’ll venture underwater to study how the coral communities responded to a second straight year of overheated water.
When temperatures pass a threshold, the coral expels its symbiotic algal partner, leaving underwater wastelands of white-washed reefs. The scientists will also use survey flights above the reef, and even satellite imaging as they mobilize to document one of global warming’s most devastating impacts. There has been a prolonged global mass bleaching under way for the past year, and climate researchers say nearly all the world’s corals will be at risk by mid-century under projected global temperature increases. Continue reading “Mass coral bleaching likely along northern Great Barrier Reef”→
Confirming measurements announced last week by the European Climate Change Service, NASA today announced that February 2017 was the second-warmest February on record, just 0.20 degrees Celsius cooler than last year’s record reading. The analysis by scientists at NASA’s Goddard Institute for Space Studies showed that the month was 1.1 degrees Celsius warmer than the 1951-1980 mean.
The monthly analysis by the GISS team is assembled from publicly available data acquired by about 6,300 meteorological stations around the world, ship- and buoy-based instruments measuring sea surface temperature, and Antarctic research stations.
The analysis shows that North America and Siberia, along with the Arctic, were the hot spots in February, with most of Europe also warmer than average. Cool areas included parts of the Pacific Northwest and the Middle East.
The pattern was reflected by the string of daily and monthly high temperature records set in the eastern U.S. The Arctic has also been record warm all winter, with sea ice in the region hovering near record low extent for several months in a row.
The persistent warmth comes despite the end of a warm El Niño Pacific Ocean phase, when a switch to La Niña — the cool part of the ENSO cycle — often brings a global cool down. Australian climate scientists this week said that yet another El Niño could be brewing in the Pacific for next year.
According to the Australian Bureau of Meteorology, there’s a 50 percent chance the El Niño threshold could be reached by July, as projections show steady warming of the central tropical Pacific Ocean over the next six months. So far, however, wind and cloud patterns have not shown any big shift away from neutral conditions. The researchers said it’s difficult to make an accurate forecast during the transition season.
Volcanoes seen as likely trigger for global glaciation
A 10-year string of steady volcanic eruptions may have been the trigger for a massive global cooling event that left much of the Earth encased in glaciers and ice sheets about 771 million years ago.
The eruptions could have spewed so much sulphur dioxide into the atmosphere that the planet’s climate reached a tipping point, resulting in what scientists call ‘snowball Earth,” according to a new study published this month in Geophysical Research Letters. Understanding the natural variability of climate is important to understanding current climate change driven by emission of greenhouse gases. Continue reading “What caused ‘snowball Earth?’”→
‘It is the equivalent of having summer for the first time in thousands to millions of years’
Deep sea ecosystems that have barely been explored are at risk from global warming, as low-oxygen zones spread and ocean acidification increaseses. By 2100, organisms deep on the ocean floor may face starvation and sweeping ecological changes, according to scientists from 20 of the world’s leading oceanographic research warned last week.
“Biodiversity in many of these areas is defined by the meager amount of food reaching the seafloor and over the next 80-plus years – in certain parts of the world – that amount of food will be cut in half,” said Andrew Thurber, an Oregon State University marine ecologist and co-author of the study, published in the journal Elementa. Continue reading “Deep oceans at risk from climate change”→
The two-year, 6-ppm surge between 2015 and 2017 is unprecedented in the observatory’s 59-year record and marked the fifth year in a row that CO2 increased by 2 ppm or more, according to Pieter Tans, lead scientist of NOAA’s Global Greenhouse Gas Reference Network. Continue reading “Atmospheric CO2 surges again in 2016”→