Tag Archive for: Climate Change

‘This System Cannot Be Sustained’

/in , , /by /High Country Newsby Anna V. Smith

The Colorado River Basin is the setting for some of the most drawn-out and complex water issues in the Western U.S. In 2019, the Colorado River Drought Contingency Plan — a water-conservation agreement between states, tribal nations and the federal government for the basin, now in its 20th year of drought — passed Congress. This year, it goes into effect.

2020 will also see the start of the renegotiation of the Colorado River Interim Guidelines. The guidelines, which regulate the flow of water to users, were created in 2007 without tribal consultation and are set to expire in 2026. The 29 tribal nations in the upper and lower basins hold some of the river’s most senior water rights and control around 20% of its annual flow.
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California Scientists Study Climate Change at Bottom of the Ocean

/in , , /by /KPBSby Erik Anderson

California researchers have found that oxygen levels and water temperatures play a key role in the health of deep-sea fish populations. San Diego and Monterey Bay scientists studied fish on the floor of the Gulf of California.

“This is an example of some of the video that we are analyzing for this research,” said Natalya Gallo, a post-doctoral researcher at the Scripps Institution of Oceanography.

She pointed to footage taken along the seafloor on the Gulf of California near the Mexican coast. The pictures come from a remotely controlled submarine. Researchers use the underwater tool to gauge the impact of a warming ocean on fish.

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Opinion: The Dam Truth About the Colorado River

/in , /by /The Salt Lake Tribuneby Gary Wockner

The latest research about the Colorado River is alarming and also predictable: In a warming world, snowmelt has been decreasing while evaporation of reservoirs is increasing. Yet no politician has a plan to save the diminishing Colorado River. If you followed the news about the Colorado River for the last year, however, you’d think that a political avalanche had swept down from Colorado’s snow-capped peaks and covered the Southwest with a blanket of “collaboration” and “river protection.”

I won’t call it fake news, but I will point out errors of omission. First, the Colorado River is not protected. The agreement that was reached — called the “Drought Contingency Plan” — does not protect the river nor its ecological health. The agreement protects the federal government’s, the states’, the cities’, and the farmers’ ability to 100% drain the river bone dry every single year.

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Utah House Reaffirms Intent to Develop Colorado River Water

/in , , /by /Deseret Newsby Amy Joi O'Donoghue

Utah’s booming population growth and rapid economic development means the need for more water, a higher level of conservation and wise development of water supplies, which are not infinite.

With that in the backdrop, the Utah House of Representatives on Tuesday passed HCR22, which makes clear to neighboring states and policymakers that Utah will someday develop its unused portion of the Colorado River.

The Colorado River, termed the hardest working river in the West, serves 40 million people in the Southwest, including a large population in Utah through a diversion system.

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Why Does the Weather Stall? New Theories Explain Enigmatic ‘Blocks’ in the Jet Stream

/in , , /by /Science Magazineby Paul Voosen

It was the summer of 2003 in Europe, and, for a while, it seemed as if Earth’s weather system had broken down. For weeks a huge mass of air stalled over the continent, slowly subsiding and suppressing cloud formation, leaving day after day of brilliantly clear skies. The mercury rose, and a record-breaking heat wave gripped countries including France and Germany, causing 70,000 deaths. Then, as abruptly as it set in, the persistent atmospheric block eased, and high winds brought relief.

Few weather phenomena are as widely experienced—but poorly understood—as an atmospheric block. When a block arises, typically at the western edge of a continent, the jet stream splits, trapping a blob of seemingly static air thousands of kilometers across. Such blocks can last for weeks, and drive heat waves, drought, and winter cold snaps.

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Putting a Price on the Protective Power of Wetlands

/in , , /by /PHYS.orgby University of California, San Diego

In coastal communities prone to hurricanes and tropical storms, people typically turn to engineered solutions for protection: levees, sea walls and the like. But a natural buffer in the form of wetlands may be the more cost-effective solution, according to new research from the University of California San Diego.

In the most comprehensive study of its sort to date, UC San Diego economists show that U.S. counties with more wetlands experienced substantially less property damage from hurricanes and tropical storms over a recent 20-year period than those with fewer wetlands.

UC San Diego — A Leader in Climate Research — Under Pressure to Slash its Greenhouse Gases

/in , , /by /San Diego Union-Tribuneby Gary Robbins

Bigger wildfires. Stronger storms. Longer droughts.

For years, UC San Diego has been out front in forecasting the impact of climate change, earning the school international praise.

But the campus also is hearing a blunt, new message: Do more to help fix the problem. Start by slashing the 300,000 tons of carbon dioxide UCSD puts into the air each year. And act quickly.

The message comes from a UCSD faculty task force which is proposing changes that could affect everything from how the school generates energy and the courses it offers to how often faculty can travel and the foods students are offered in campus dining halls.

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California’s Driest February and Coming Drought?

/in , , /by /California WaterBlog (UC Davis Center for Watershed Sciences)by Jay Lund

February has been amazingly dry in California, if anyone hasn’t noticed.  No precipitation at all in February, a dry forecast, about 51% of seasonal Sacramento Valley precipitation (a bit less for the San Joaquin and Tulare basins), and only about half (45-57%) of normal snowpack for this time of year.  Unless March is wet, this dry year seems likely to advance the onset of the fire season and threaten forest health this year.

Reservoir levels are still not bad for this time of year.  Many are fuller than average, perhaps reflecting some snowpack loss.  Some other reservoirs are a bit low.  This is inherent in the first year of a drought, low precipitation and snowpack, but mostly ok reservoirs.

Groundwater has recovered somewhat from the previous 2012-2016 drought, better in the north, but less in the state’s more overdraft-prone areas in the San Joaquin and Tulare basins.

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Summers Are Starting Earlier, Finishing Later and Winter is in Retreat

/in , /by /The Sydney Morning Heraldby Peter Hannam

Australia’s summers have lengthened by as much as a month or more in the past half century, exposing people to greater fire and heat extremes and placing ecosystems and farm crops at risk.

Researchers from The Australia Institute analysed data from 70 of the Bureau of Meteorology’s weather stations across southern and sub-tropical Australia, where the bulk of the population lives. They found in the past five years, summers were 50 per cent longer than they were in the mid-20th century.

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What Would It Take to Get More Farmers Fighting Climate Change?

/in , /by /Mother Jonesby Tom Philpott

As signs of a new drought loom over California farm country and a potential return of last spring’s catastrophic floods haunts the Midwestern corn belt, Rep. Chellie Pingree (D-Maine) is out with a new plan to ready US agriculture for the insults of climate change. Called the Agriculture Resilience Act, the bill would enlist growers to help slow global warming by using their soil to sponge up carbon dioxide. Agriculture is responsible for nearly 10 percent of our country’s carbon emissions. Pingree’s plan would establish a “national goal” of net zero greenhouse emissions from agriculture by no later than 2040.

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