Measurement and interpretation of gas phase formaldehyde concentrations obtained during the CHABLIS campaign in coastal Antarctica

first_imgGas phase formaldehyde concentrations were measured during the 2004-2005 CHABLIS campaign at Halley research station, Antarctica. Data coverage span from May 2004 through to January 2005, thus capturing the majority of the year, with a wintertime minimum of near or below the instrumental detection limit rising to between 50 and 200 pptv during the austral summer. Factors controlling HCHO concentration include local chemical sources and sinks, and exchange with the snow surface. The measured seasonality is in line with previous observations from Neumayer station, with maximum in summer and minimum during the winter months, but with lower absolute concentrations throughout the year. The gas-phase production of HCHO was dominated by methane oxidation and a steady-state analysis showed that reactions of iodine and bromine species substantially reduced the predicted HCHO levels based upon in situ chemistry. This indicates a substantial additional HCHO source to be present that could be explained by a snowpack source.last_img read more

Interhemispheric Atlantic seesaw response during the last deglaciation

first_imgThe asynchronous relationship between millennial-scale temperature changes over Greenland and Antarctica during the last glacial period has led to the notion of a bipolar seesaw which acts to redistribute heat depending on the state of meridional overturning circulation within the Atlantic Ocean. Here we present new records from the South Atlantic that show rapid changes during the last deglaciation that were instantaneous (within dating uncertainty) and of opposite sign to those observed in the North Atlantic. Our results demonstrate a direct link between the abrupt changes associated with variations in the Atlantic meridional overturning circulation and the more gradual adjustments characteristic of the Southern Ocean. These results emphasize the importance of the Southern Ocean for the development and transmission of millennial-scale climate variability and highlight its role in deglacial climate change and the associated rise in atmospheric carbon dioxide.last_img read more

Implications of the COVID-19 pandemic for Antarctica

first_imgTo date, Antarctica is the only continent to have escaped the COVID-19 pandemic. This was facilitated by the continent’s isolation and low human presence, combined with the global emergence of the pandemic at the end of the Antarctic summer season and the rapid action of those national governmental operators and other actors still active on and around the continent during the early phases of the outbreak. Here, we consider the implications of the pandemic for Antarctic governance, national operator logistics, science, tourism and the fishing industry, as well as for Antarctic environmental protection. Global disruption will result in a temporary decrease in human activity in Antarctica, in turn leading to a reduction in environmental impacts for a period, but also a reduced capacity to respond to environmental incidents. Given the diversity of transmission routes and vectors, preventing the introduction of the virus will be difficult, even with stringent quarantine procedures in place, and the risks and implications of virus transmission to Antarctic wildlife are largely unknown. With control of the pandemic a major global challenge, international cooperation will be essential if Antarctica is to remain free of coronavirus.last_img read more

The role of curvature in modifying frontal instabilities. Part II: Application of the criterion to curved density fronts at low Richardson numbers

first_imgWe continue our study of the role of curvature in modifying frontal stability. In Part 1, we obtained an instability criterion valid for curved fronts and vortices in gradient wind balance (GWB): Φ′ = L′q′ < 0, where L′ and q′ are the non-dimensional absolute angular momentum and Ertel potential vorticity (PV), respectively. In Part 2, we investigate this criterion in a parameter space representative of low-Richardson number fronts and vortices in GWB. An interesting outcome is that, for Richardson numbers near one, anticyclonic flows increase in q′, while cyclonic flows decrease in q′, tending to stabilize anticyclonic and de-stabilize cyclonic flow. Although stability is marginal or weak for anticyclonic flow (owing to multiplication by L′), the de-stabilization of cyclonic flow is pronounced, and may help to explain an observed asymmetry in the distribution of small-scale, coherent vortices in the ocean interior. We are referring mid-latitude submesoscale and polar mesoscale vortices that are generated by friction and/or buoyancy forcing within boundary layers but that are often documented outside these layers. A comparison is made between several documented vortices and predicted stability maps, providing support for the proposed mechanism. Finally, a simple expression, which is a root of the stability discriminant, Φ′, explains the observed asymmetry in the distribution of vorticity. In conclusion, the generalized criterion is consistent with theory, observations and recent modeling studies, and demonstrates that curvature in low-stratified environments can de-stabilize cyclonic and stabilize anticyclonic fronts and vortices to symmetric instability. The results may have implications for Earth system models.last_img read more

Owner backs out of plan to move baseball team to Colorado

first_img FacebookTwitterLinkedInEmailPUEBLO, Colo. (AP) — The owner of a Utah minor league baseball team has backed out of a deal to move the team to Pueblo, Colorado.The Pueblo Chieftain reports Orem Owlz owner Jeff Katofsky announced his plans to relocate the team last month. Pueblo County had planned to build a $25 million multi-purpose stadium for the team.Pueblo Urban Renewal Authority Director Jerry Pacheco confirmed the change of plans in an email to officials involved in the project, saying Katofsky declined to proceed with a plan to move the team and develop three hotels. Pacheco says Katofsky cited his frustration about the way the project was progressing.Katofsky did not immediately return phone calls from the newspaper.Pueblo County Commissioner Sal Pace, a proponent of the project, declined to comment on Katofsky’s decision. Written by July 18, 2018 /Sports News – Local Owner backs out of plan to move baseball team to Colorado Tags: Orem Owlz Associated Presslast_img read more

Bees Fold Aces

first_img Tags: Baseball/PCL/Salt Lake Bees Robert Lovell Written by FacebookTwitterLinkedInEmail(Reno, NV)  —  Luis Rengifo singled in the go-ahead run in the ninth inning as the Bees folded the Aces 8-7 in Reno.Rengifo also homered for Salt Lake in the win.  Jose Briceno also went deep and Jeremy Rhoades earned the win.The Bees are off tonight and visit Las Vegas tomorrow. August 20, 2018 /Sports News – Local Bees Fold Aceslast_img read more

UVU Men’s Basketball Faces Arizona Thursday; Northern Arizona Saturday

first_img Tags: Arizona Wildcats/Brandon Randolph/Jake Toolson/McKale Center/Tucson/Utah Valley Men’s Basketball December 5, 2018 /Sports News – Local UVU Men’s Basketball Faces Arizona Thursday; Northern Arizona Saturday Written by Brad James FacebookTwitterLinkedInEmailTUCSON, Ariz.-The Utah Valley University men’s basketball team takes a foray into the Grand Canyon State this week, battling the Arizona Wildcats Thursday at Tucson, Ariz. and the Northern Arizona Lumberjacks Saturday at Flagstaff, Ariz.Thursday’s game is only the second in history against the Wildcats for the Wolverines with Arizona prevailing 87-56 December 9, 2014 at the McKale Center in Tucson.The Wildcats have currently won 51 straight non-conference home games with the Wolverines nursing a 2-8 record against the Pac-12 all-time.The only victories against the Pac-12 Utah Valley has earned were a 75-71 win over Arizona State in 2005 and a 70-68 triumph at Corvallis, Ore. against Oregon State in 2010.The Wolverines come into their game at Tucson with a record of 6-3 and they post 75.9 points per game and only give up 71.3 points per contest. Jake Toolson leads Utah Valley by averaging 15.3 points per game and 3.4 rebounds per contest.The Wildcats come into this game at 6-2 and average 80.6 points per game, while only giving up 65.4 points per contest.Arizona’s leading scorer is guard Brandon Randolph, who posts 17.1 points per contest. Center/forward Chase Jeter averages 7.9 rebounds to pace the Wildcats on the glass.last_img read more

Suns owner Robert Sarver affirms commitment to keep team in Phoenix

first_img FacebookTwitterLinkedInEmailstevanovicigor/iStock(PHOENIX) — One day after reports that he had threatened to move the the team elsewhere, Phoenix Suns owner Robert Sarver said Thursday he is fully committed to keeping the team in place.“I am 100 percent all-in in keeping this team right here where we stand,” Sarver said in a video message posted to Twitter. “And I want to make sure that message comes across crystal clear to every one of you.”Earlier in the week, the Phoenix City Council delayed a vote on more than $200 million in renovations to the team’s stadium. The Arizona Republic reported Wednesday that Sarver had recently contacted a member of the council threatening to move the team to Seattle or Las Vegas if the renovation deal wasn’t approved.On Friday, Suns president Jason Rowley released a statement that indicated the team has had no discussions with any other city about potential relocation. Sarver has said he is looking to build a “first-class” practice facility in addition to improving the arena. The vote on those renovations will now be held on January 23.Copyright © 2018, ABC Radio. All rights reserved. December 14, 2018 /Sports News – National Suns owner Robert Sarver affirms commitment to keep team in Phoenix Written bycenter_img Beau Lundlast_img read more

Utah’s Mitchell May Join Team USA

first_img Written by June 4, 2019 /Sports News – Local Utah’s Mitchell May Join Team USA Robert Lovell Tags: Donovan Mitchell/Joe Ingles/Rudy Gobert/Team USA/Utah Jazz FacebookTwitterLinkedInEmail(Salt Lake City, UT)  —  Utah Jazz guard Donovan Mitchell is a candidate to join Team USA for the FIBA World Cup later this summer.The New York Times reports that Team USA is assembling their roster and Mitchell is among the candidates.Two Jazz players have already committed to play in the World Cup.  Rudy Gobert is suiting up for France and Joe Ingles will play for Australia.last_img read more

David Ortiz arrives at Boston hospital after getting shot in Dominican Republic

first_imgJune 10, 2019 /Sports News – National David Ortiz arrives at Boston hospital after getting shot in Dominican Republic FacebookTwitterLinkedInEmailChristian Petersen/Getty Images(SANTO DOMINGO, Dominican Republic) — Red Sox legend David “Big Papi” Ortiz arrived in Boston on Monday night from a hospital in the Dominican Republic after he was shot in the back at a nightclub by a man who police say confessed to the ambush attack. The bullet entered Ortiz’s back and exited through his abdomen, according to Ortiz’s father, Americo Enrique Ortiz, who spoke to reporters outside the hospital in Santo Domingo where his son was being treated. He said his son got out of surgery just after midnight on Monday and was in stable condition. Sam Kennedy, the Red Sox president and chief executive officer, said Monday afternoon that the team sent a medical air ambulance to pick up Ortiz and jet him back to Boston to be treated at Massachusetts General Hospital. He said he hoped Ortiz would be back in Boston “sometime later tonight.”Ortiz arrived at Massachusetts General Hospital around 9:30 p.m. on Monday.“David Ortiz is one of the most celebrated and beloved members of the Red Sox family,” said Kennedy, adding that the shooting was jarring news to the team, from the front office to the players, coaches and fans.In the Dominican Republic, Dr. Abel Gonzalez said the shooting left Ortiz, the married father of three children, with significant injuries.“The wound caused damage to the liver [and] small intestine. We had to remove part of the intestines as well as [part of] the liver,” Gonzalez said at a news conference Monday afternoon.The shooting unfolded Sunday night at the Dial Bar and Lounge, a nightclub in the nation’s capital. Security camera footage acquired by ABC News shows a crowded bar with people scattering after shots are fired and Ortiz, sitting at the bar, appear to grab his side and then collapse.The man who allegedly shot Ortiz was identified by police as 25-year-old Eddy Feliz Garcia.Garcia reportedly confessed to shooting Ortiz, according to Frank Félix Duran, a spokesman for the Dominican Republic National Police. Duran declined to elaborate on what the suspect told the police.In a brief statement, police said they do not believe robbery was the motive.Garcia apparently tried to flee the nightclub after the shooting but onlookers immediately stopped and attacked him before he was turned over to the police and taken to a hospital for treatment. He was treated and released into police custody.Garcia suffered a head contusion, trauma to his thorax and injuries to his left knee and right leg when the crowd detained him, according to the Dominican Republic National Health Service.Duran said Garcia appeared to be under the influence when police took him into custody. He said police are awaiting a toxicology report to determine if Garcia was under the influence of drugs or alcohol.Duran said Garcia has a criminal record, including minor drug trafficking arrests.Kennedy, the Red Sox president, said a medical team in Boston has been in communication with physicians treating Ortiz in the Dominican Republic. He said Ortiz’s condition is “still serious.”“But he is stable enough to be transported back here to Boston to continue care,” Kennedy said.Dr. Gonzalez said Ortiz was conscious on Monday afternoon and his blood pressure was good.“Today, his tubes were removed, he opened his eyes and the first thing he asked was to see his family,” González said of Ortiz. “He is in good spirits, waiting to travel to Boston this afternoon to see his physician and his wife.”Americo Ortiz also attended the news conference and personally thanked the doctors and staff at the Abel González Center for Advanced Medicine in Santo Domingo who treated his son and likely saved his life.He said he wanted to make it clear that his son, who was born in Santo Domingo and is one of the most famous baseball players in the country’s rich history of the sport, was not being taken back to the U.S. because of lack of service in the Dominican Republic.“We are very satisfied with the service,” said Americo Ortiz, explaining that his son’s family and personal doctors are in Boston.David Ortiz left the hospital by ambulance just after 5 p.m. local time on Monday and was driven to an airport to be placed on the medical ambulance jet.“Our thoughts are with David Ortiz, who is reportedly hospitalized after being shot in his hometown of Santo Domingo, Dominican Republic,” MLB tweeted on its official Twitter account.News of Ortiz being shot reached some Boston officials, including Mayor Marty Walsh, as they were helping to launch a new gun violence prevention effort in the city.“It’s a tough situation. Hopefully, he’s OK. He’s such a big Boston icon and part of our city, part of our life here in Boston,” Mayor Walsh told ABC affiliate WCVB-TV in Boston.Massachusetts Attorney General Maura Healey said she is praying for Ortiz to make a full recovery.“There’s nobody who’s a bigger fighter who knows how to step up in a time of crisis than Big Papi,” Healey said told WCVB.Ortiz was part of three Red Sox World Series championship teams — in 2004, 2007 and 2013. He’s credited with helping to break the so-called “Curse of the Bambino,” derived from the Red Sox sale of Babe Ruth to the New York Yankees in 1918 and, according to superstition, led to Boston’s 86-year championship drought.Lovingly known as “Big Papi,” he was a 10-time All-Star, seven-time Silver Slugger winner and finished in the top 5 in MVP voting five times. He was also the World Series MVP in 2013.Hall of Fame pitcher Pedro Martinez, a legend in the Dominican Republic in his own right, and a former teammate with Ortiz on the 2004 champion Red Sox team, tweeted, “I’m at peace knowing you out of danger, you a strong man Compai, can’t wait to hear your voice.”Ortiz retired from baseball in 2016. He hit .315 and led the American League in doubles and runs batted in during his final season, but held fast in his decision to walk away from the game as he had announced months earlier.He finished his career with 541 career home runs, 17th all-time, and was eighth all-time in extra-base hits (1,192) and 12th all-time in doubles (632).Copyright © 2019, ABC Radio. All rights reserved. Written bycenter_img Beau Lundlast_img read more