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Buff Asst. La Crosse Coach Nielsen Claims Bronze Medal At World Cup

Jul 22nd

Posted by Channel 1 Networks in CU Buffs

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OSHAWA, Ontario – For the ninth consecutive time since the Federation of International Lacrosse Women’s Lacrosse World Cup began in 1982, Australia is taking home a medal –  its first bronze since the 1993 games.

After ending pool play with a 2-2 record, Australia entered the Championship Bracket a No. 3 seed. In the quarterfinals, Australia easily took down Scotland 26-2. In a rematch with the host team in the semifinals, Australia suffered only its second ever loss to Canada at the World Cup. With the loss behind them, Australia was determined to keep its medal-winning streak alive and was victorious in the bronze medal game, defeating England 12-6.

lacrosse

University of Colorado assistant lacrosse coach Hannah Nielsen has now won one of each medal in her three World Cup appearances with the Australian National Team. The Adelaide, Australia native has also earned a spot on the All-World Team at back-to-back Cups. In 2005, Nielsen scored a key goal to push Australia over the United States in the Gold Medal game. In 2009, she led the team with 12 goals and 13 assists as the Aussies fell by a single goal to the U.S. in the title game. In the 2013 games, she led the team with 24 total points, including 10 goals and 12 assists.

“I am so proud of Hannah and all she has accomplished not only in this last World Cup, but her entire lacrosse career,” CU head lacrosse coach Ann Elliott said. “To be able to play in the World Cup and represent your home country is such an incredible honor and one I know Hannah cherishes and works extremely hard for. This particular World Cup was a difficult one for Hannah as their team had to overcome the loss of one of their leaders, Jen Adams, to an ACL tear right before the tournament started. However, to watch Hannah battle through that and step up to help lead her team to the bronze medal and making the All-World Team was extremely special and I could not be more proud of all she has worked for and achieved.”

Quarterfinals (Thursday, July 18): Australia allowed just two goals against Scotland to advance to the semifinals. The No. 3 seeded Aussies stomped No. 11 seed Scotland 26-2 in the highest scoring game of the first two rounds of the Championship Bracket. Australia came out on a 9-0 run, not allowing a Scottish goal until nearly the halfway point in the first half. Scotland would not score again until the final 15 seconds of the match. Australia outshot Scotland 38-6 and forced 24 Scottish turnovers. Nielsen scored two goals and contributed a game-high four assists in the win.

Semifinals (Friday, July 19): Host team Canada marked several firsts during the 2013 World Cup. They earned their first ever win against Australia in World Cup play with a 13-12 pool play victory. In the teams’ rematch in the semifinals, Canada picked up its second, downing Australia 11-7 to advance to its first final. Just as she did in their first match-up, Nielsen tied for a team-high in scoring, netting two goals and contributing an assist. Canada dominated the offense, outshooting Australia 21-9 in the first-half alone on their way to 34 total shots, compared to the Aussies’ 28. Australia never had the lead, but Nielsen helped them get back within two late in the first half, and kept the match competitive by scoring Australia’s final two goals.

Bronze Medal Game (Saturday, July 20): Though they fell behind early against England as Sarah Taylor gave the Brits two quick goals, Australia was not content in going home empty handed. The Aussies claimed the bronze medal with a definitive 12-6 win over England. Australia led England 13-7 in both draw controls and ground balls. Nielsen tied for game-high scoring with four goals and one assist. Her first goal of the game helped the Aussies to a 4-3 lead. Her next came off a free position shot in the final minutes of the first half to help Australia take an 8-4 lead into halftime. She got the Aussies on the board again in the first 40 seconds of the second half and again with 11:19 remaining.

CU lacrosse coach Elliott was in attendance for the final three days of the tournament to support Nielsen and three other former Northwestern teammates that represented the USA.

“The World Cup is an amazing event that this year brought together 19 countries,” Elliott said. “The growth of our sport continues to amaze me.”

Australia continues to be a dominant force in women’s lacrosse, having won gold medals in 1986 and 2005 and earning four silver (1982, 1997, 2001 and 2009) and three bronze (1989, 1993 and 2013) medals. With a 19-5 championship victory this year, rival United States won its second straight and seventh overall World Cup title. In its first ever title game, Canada capped its most successful World Cup tournament with a silver medal.

About the FIL
The Federation of International Lacrosse (FIL) is the international governing body for men’s and women’s lacrosse. The FIL currently has 45 member nations and sanctions five World Championships (women’s and men’s field, women’s and men’s U19 field and men’s indoor.) The FIL is responsible for the governance and integrity of all forms of lacrosse and provides responsive and effective leadership to support the sports’ development throughout the world.

All-World Team

Attack
Katrina Dowd – United States
Lindsey Munday – United States
Katie Rowan – United States
Dana Dobbie – Canada

Midfield
Laura Merrifield – England
Hannah Nielsen – Australia
Sarah Albrecht – United States
Stacey Morlang Sullivan – Australia

Defense
Amber Falcone – United States
Katie Guy – Canada
Alicia Wickens – Australia

Goalkeeper
Devon Wills – United States

—

Marlee Horn
Graduate Assistant SID
University of Colorado
O: 303.492.7525 C: 719.821.0689
marlee.horn@colorado.edu
CUBuffs.com

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Open Space/Mountain Park news

Jul 22nd

Posted by Channel 1 Networks in News

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Community Ditch Trail Closure effective July 22, 2013

Beginning today, July 22, Community Ditch Trail will be closed at State Highway 93. The closure is likely to last for most of the next year in order to facilitate the installation of an underpass that will allow trail users to cross SH 93 without mixing with highway traffic. All trails in the area will remain open for use, but may offer only an out and back experience during the closure. There will be extensive construction activity in the area of the underpass and the department asks that all users respect the closure and avoid the construction zone for their and other’s safety. Traffic on SH 93 will also be affected. However, the highway will remain open during construction with various lane restrictions.

NEWS

ditch

Wednesday, July 17, 2013

Media Contacts:

Jim Reeder, Open Space and Mountain Parks, 303-413-7640

Sarah Huntley, Media Relations, 303-441-3155

www.bouldercolorado.gov

Work to begin on underpass on Community Ditch Trail at State Highway 93

The City of Boulder Open Space and Mountain Parks (OSMP) department announced today that work will begin on the long-awaited underpass on Community Ditch Trail at State Highway 93 (Hwy. 93) on Monday, July 22. When completed, trail users will cross under Hwy. 93 rather than mixing with traffic on the highway.

The underpass is one part of a larger Colorado Department of Transportation (CDOT) project. Hwy. 93, from State Highway 170 to State Highway 128, will also be widened to create wider shoulders and be overlain with new asphalt. The work will be done by a CDOT contractor.

The underpass is expected to be in use by July of next year. Vehicular traffic will be affected by the construction work with some lane closures. However, the highway will remain open for the duration of the construction work.

“OSMP has wanted to create a safer crossing of 93 for many years. Safety for our trail users is a priority, and we are excited to learn that installation will begin next week,” said Jim Reeder, OSMP division manager. “We anticipate that more users will begin to explore and enjoy the Community Ditch Trail once this project is complete.”

While the underpass is being built, however, existing users should know that the existing crossing via Hwy. 93 will be closed. This means that several trails will temporarily become out-and-back trails, starting on July 22. Individuals can check the department’s website at www.osmp.org for information about which trails are affected.

For more information, call OSMP at 303-441-3440.¡¡ Additional information can also be found on www.osmp.org.

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CU: Early life on Earth supported by faint sun

Jul 21st

Posted by Channel 1 Networks in News

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Solving the “faint young sun paradox” — explaining how early Earth was warm and habitable for life beginning more than 3 billion years ago even though the sun was 20 percent dimmer than today — may not be as difficult as believed, says a new University of Colorado Boulder study.

In fact, two CU-Boulder researchers say all that may have been required to sustain liquid water and primitive life on Earth during the Archean eon 2.8 billion years ago were reasonable atmospheric carbon dioxide amounts believed to be present at the time and perhaps a dash of methane. The key to the solution was the use of sophisticated three-dimensional climate models that were run for thousands of hours on CU’s Janus supercomputer, rather than crude, one-dimensional models used by almost all scientists attempting to solve the paradox, said doctoral student Eric Wolf, lead study author.

faint sun

“It’s really not that hard in a three-dimensional climate model to get average surface temperatures during the Archean that are in fact moderate,” said Wolf, a doctoral student in CU-Boulder’s atmospheric and oceanic sciences department. “Our models indicate the Archean climate may have been similar to our present climate, perhaps a little cooler. Even if Earth was sliding in and out of glacial periods back then, there still would have been a large amount of liquid water in equatorial regions, just like today.”

Evolutionary biologists believe life arose on Earth as simple cells roughly 3.5 billion years ago, about a billion years after the planet is thought to have formed. Scientists have speculated the first life may have evolved in shallow tide pools, freshwater ponds, freshwater or deep-sea hydrothermal vents, or even arrived on objects from space.

A cover article by Wolf and Toon on the topic appears in the July issue of Astrobiology. The study was funded by two NASA grants and by the National Science Foundation, which supports CU-Boulder’s Janus supercomputer used for the study.

Scientists have been trying to solve the faint young sun paradox since 1972, when Cornell University scientist Carl Sagan — Toon’s doctoral adviser at the time — and colleague George Mullen broached the subject. Since then there have been many studies using 1-D climate models to try to solve the faint young sun paradox — with results ranging from a hot, tropical Earth to a “snowball Earth” with runaway glaciation — none of which have conclusively resolved the problem.

“In our opinion, the one-dimensional models of early Earth created by scientists to solve this paradox are too simple — they are essentially taking the early Earth and reducing it to a single column atmospheric profile,” said Toon. “One-dimensional models are simply too crude to give an accurate picture.”

Wolf and Toon used a general circulation model known as the Community Atmospheric Model version 3.0 developed by the National Center for Atmospheric Research in Boulder and which contains 3-D atmosphere, ocean, land, cloud and sea ice components. The two researchers also “tuned up” the model with a sophisticated radiative transfer component that allowed for the absorption, emission and scattering of solar energy and an accurate calculation of the greenhouse effect for the unusual atmosphere of early Earth, where there was no oxygen and no ozone, but lots of CO2 and possibly methane.

The simplest solution to the faint sun paradox, which duplicates Earth’s present climate, involves maintaining roughly 20,000 parts per million of the greenhouse gas CO2 and 1,000 ppm of methane in the ancient atmosphere some 2.8 billion years ago, said Wolf. While that may seem like a lot compared to today’s 400 ppm of CO2 in the atmosphere, geological studies of ancient soil samples support the idea that CO2 likely could have been that high during that time period. Methane is considered to be at least 20 times more powerful as a greenhouse gas than CO2 and could have played a significant role in warming the early Earth as well, said the CU researchers.

There are other reasons to believe that CO2 was much higher in the Archean, said Toon, who along with Wolf is associated with CU’s Laboratory for Atmospheric and Space Physics. The continental area of Earth was smaller back then so there was less weathering of the land and a lower release of minerals to the oceans. As a result there was a smaller conversion of CO2 to limestone in the ocean. Likewise, there were no “rooted” land plants in the Archean, which could have accelerated the weathering of the soils and indirectly lowered the atmospheric abundance of CO2, Toon said.

Another solution to achieving a habitable but slightly cooler climate under the faint sun conditions is for the Archean atmosphere to have contained roughly 15,000 to 20,000 ppm of CO2 and no methane, said Wolf. “Our results indicate that a weak version of the faint young sun paradox, requiring only that some portion of the planet’s surface maintain liquid water, may be resolved with moderate greenhouse gas inventories,” the authors wrote in Astrobiology.

“Even if half of Earth’s surface was below freezing back in the Archean and half was above freezing, it still would have constituted a habitable planet since at least 50 percent of the ocean would have remained open,” said Wolf. “Most scientists have not considered that there might have been a middle ground for the climate of the Archean.

“The leap from one-dimensional to three-dimensional models is an important step,” said Wolf.  “Clouds and sea ice are critical factors in determining climate, but the one-dimensional models completely ignore them.”

Has the faint young sun paradox finally been solved? “I don’t want to be presumptuous here,” said Wolf. “But we show that the paradox is definitely not as challenging as was believed over the past 40 years. While we can’t say definitively what the atmosphere looked like back then without more geological evidence, it is certainly not a stretch at all with our model to get a warm early Earth that would have been hospitable to life.”

“The Janus supercomputer has been a tremendous addition to the campus, and this early Earth climate modeling project would have impossible without it,” said Toon. The researchers estimated the project required roughly 6,000 hours of supercomputer computation time, an effort equal to about 10 years on a home computer.

-CU-

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