7 news posts from July 2013

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Nighttime heat waves quadruple in Pacific Northwest

Nighttime heat waves are becoming more frequent in western Washington and Oregon. Research from JISAO and the Office of the Washington State Climatologist shows that the region west of the Cascades saw only three nighttime heat waves between 1901 and 1980, but that number quadrupled to 12 nighttime heat waves in the three decades after 1980. Read more in this UW News story. 

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State climatologist releases summer outlook

With continuing neutral ENSO conditions, the Office of the Washington State Climatologist reported today that Washington may be in for a warmer-than-normal summer and early fall. We might see above-normal precipitation later in the fall. Read more at their website. 

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The Many Faces of Pack Forest

When you visit the Charles L. Pack Experimental Forest, you are not just taking a walk through a forest, you’re seeing sustainability in action. Through spacing trials, selection thinning, fertilizer treatments, and ecosystem-value services research, the Center of Sustainable Forestry demonstrates that sustainability and active forest management are not mutually exclusive. Read this exploration of the many faces of Pack Forest in this TimberWest Magazine story. 

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Live video from the NE Pacific Ocean, streaming daily

There’s live video coming in daily from the Northeast Pacific Ocean! The University of Washington’s Ocean Observatories Initiative team of scientists and engineers is at sea again this summer, and they are once again streaming live video via a website as they build the first U.S. regional cabled ocean observatory. Using the underwater robotic vehicle ROPOS deployed from the UW Research Vessel Thomas G. 

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Like pressure-cookers, some volcanoes "scream" at ever-higher pitches before they blow their tops

It is not unusual for swarms of small earthquakes to precede a volcanic eruption. They can reach a point of such rapid succession that they create a signal called harmonic tremor that resembles sound made by various types of musical instruments, though at frequencies much lower than humans can hear. A new analysis, co-authored by ESS PhD student Alicia Hotovec-Ellis, of an eruption sequence at Alaska’s Redoubt Volcano in March 2009 shows that the harmonic tremor glided to substantially higher frequencies and then stopped abruptly just before six of the eruptions, five of them coming in succession. 

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