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6 November 2013
AGU has launched the Thriving Earth Exchange, a new initiative that supports communities as they protect themselves from hazards, adapt to a changing planet, and create sustainable futures. Featured in this week’s edition of Eos, learn more about the program where AGU members will work with local leaders to contribute their Earth and space science expertise to significant societal challenges. The Thriving Earth Exchange is inspired by a series of …
26 July 2013
In between bouts of hottish weather (I don’t count it as hot unless it’s well into the nineties and the humidity is fairly high) and the occasional cool day like today, we’ve been having some fairly spectacular thunderstorms in Buffalo. That’s no unusual thing in the summertime, but after teaching a chunk of an intro course about streamflow and what happens after it rains, I’ve started paying more attention to water features in my area.
28 June 2013
As President Obama announced sweeping policies Tuesday aimed at curbing carbon emissions and combating climate change, water resources experts at a Washington, D.C. meeting across town from where Obama spoke discussed the entwined nature of water conservation and energy production .”Saving greenhouse gas emissions saves water too,” said Robert Jackson of Duke University in Durham, N.C., as he and other panelists discussed retrofitting power plants that burn coal or other fossil fuels and turning to alternative energy sources.
4 June 2013
Water and energy are linked resources in ever-increasing demand in the United States. Energy production requires an abundant, reliable, and predictable source of water, a resource that is unfortunately in short supply already throughout large portions of the U.S. Additionally, developing water supplies can require large amounts of energy to extract, transport, treat, and distribute. As such, the water-energy nexus presents a significant challenge for our country’s water resource and …
19 April 2013
Over 80 scientists gathered at a conference here this week to share their latest research on past, current, and projected future sea level rise and to discuss how this information can be used to shape policy. Despite their diverse perspectives and expertise, one thing the scientists agreed on for sure: the rates and impacts of sea level rise are local and communities are facing a growing risk.
7 December 2012
Out of sight, out of mind – that’s the essence of carbon sequestration, an emerging technology designed to fight climate change by packing liquefied carbon dioxide in underground rock formations. But rocks have cracks, wells, holes, and other surprises that could let that carbon, so painstakingly injected, bubble back up to the surface again. Engineers and scientists need a way to watch for leaks that’s reliable and inexpensive. The solution, one scientist says, is already falling from the skies.
6 December 2012
No one knew what happened when a 7-foot wave hit Lake Erie’s shoreline, sweeping holiday weekend beach-goers off of their feet and swamping boats in their harbors on May 27 of this year. News reporters jokingly called it a tsunami, but explained it was just another wave surge in the wake of windy weather coming from the Canadian border. But it was a tsunami.
5 December 2012
In the Gangeshwar watershed in Rajasthan, India, farmers are at the mercy of their water supply. They use electrical pumps to capture well water for irrigating fields of wheat, rice, cotton and other crops. But wells often run dry, threatening crops and livelihoods. Melissa Rohde, now a graduate student in civil & environmental engineering at Stanford, in Palo Alto, California is working to find a simple, cost-effective way to measure …
28 October 2012
The winds are already increasing along the Eastern Seaboard tonight as Sandy heads northward. I was at Cape Henlopen in Delaware before dark, and the ocean was already roaring with 5-6 foot swells. There is still some disagreement int he model guidance but I’d put the chances of landfall between Rehoboth Beach, Delaware and Sandy Hook NJ at 70%. As Sandy turns into an extratropical storm the winds will no …
27 September 2012
Every summer in the Arctic, a vast system of ponds appears on the broad beds of floating sea ice, only to freeze again when the cold season returns. Researchers consider these transient bodies of water – called melt ponds — an important factor in climate change because they absorb sunlight and contribute to sea-ice loss. While warming has increased the fraction of Arctic sea ice where melt ponds form, global climate models have remained incapable of accurately predicting the influence of melt ponds, scientists say. A new model, which incorporates complex physics of the ponds, is generating predictions of sea-ice extent and thickness that match well with observations, the model’s developers report. The researchers are introducing this new capability just weeks after the extent of Arctic sea ice shrank to an unprecedented autumn low that climate models were unable to predict.
10 September 2012
With every passing year it becomes more apparent that the Arctic Ocean sea ice seems to be in a death spiral. The ice area this September is 45% below the levels during September in the 1980′s, and almost certainly it is at levels that haven’t been seen for a thousand years (and likely much more). The melt back this year smashed the record set back in 2007, and we have now reached …
29 August 2012
Winds are gusting to over 100 mph just offshore now and winds are already gusting to near 80 mph around the New Orleans area tonight. The radar data shows a shrinking eye wall and that also indicates the Isaac has gotten stronger. The track now seems likely to put New Orleans in the wettest and windiest part of the storm. The storm surge and the rainfall remain the biggest worries. If you are in …
17 July 2012
As the Earth’s surface warms, climate models predict that the amount of fresh water for human consumption will likely decrease in parts of the globe. While that prospect looms for many cities around the world, a new study finds a more imminent threat to water supplies of cities in the tropical Andes — population growth.
25 May 2012
Declining water levels are causing the floor of the Dead Sea to rise, according to a new study. With less water to weigh it down, the sea’s bed is now rising at a rate of about 5 mm (0.2 in) per year, said Ran Nof, a PhD candidate at Israel’s Ben-Gurion University of the Negev
24 May 2012
NASA’s Aqua satellite captured a gorgeous view of the lake breeze around Lakes Erie & Ontario Wednesday afternoon. The still, very chilly, waters of the lakes can produce a strong and pronounced lake breeze as the late spring sunshine warms up the land. Afternoon temps. near the lake were in the low 60′s while it was in the mid to upper 70′s just a few miles inland. Just to remind you that …
14 May 2012
This image courtesy of the USGS: Some interesting facts I looked up regarding water: Virtually all of that blue blob is salt water and not drinkable. Only 2.5% of that blue marble of water s fresh and 70% of that 2.5% is frozen ice in Greenland, Antarctica, or on high mountaintops. Only .007% of Earth’s water is easily accessible for humans, a fact that I made much of when taught …
18 April 2012
When populations expand, the demand for fresh water rises. And over the past two decades, population growth has contributed to a 6 percent decline in worldwide surface water, according to a new study.
8 November 2011
A World War II “Dig for Victory!” campaign, while the United Kingdom was effectively cut off from Canadian food supplies, played a key role in today’s nitrogen contamination of the Thames basin. That’s according to researchers who dug into century-old, leather-bound volumes of water quality measurements dating back to the mid-1800s.
5 August 2011
What you’re seeing here is a series of HiRISE images of a crater wall on Mars. Starting in the spring, hundreds of dark streaks form and make their way downhill, and then they fade in winter. The leading hypothesis is that they are flowing salty water, but I am still skeptical.
3 January 2011
Now that it’s a New Year, it’s time I wrapped up my AGU 2010 recaps. This post covers Wednesday and Thursday, with lots of good stuff about super-earth exoplanets, impacts on the Moon and Mars, and lasers on Venus!