An analysis of the oxidation potential of the South Pole boundary layer and the influence of stratospheric ozone depletion

first_imgThe summertime atmospheric boundary layer over the South Pole has recently been shown to be highly oxidizing, with greater concentrations of NO and OH than previously expected. The source of NO has been attributed to photolysis of nitrate impurities in the snowpack, with elevated OH from the reaction NO + HO2. However, the Antarctic troposphere is not currently in a “natural” state, being subject nowadays to greatly increased incidences of ultraviolet (UV) radiation each spring. Here we analyze the long-term record of surface ozone at the South Pole (1975–2001), to look for evidence of a changing oxidation potential. Daily averaged surface ozone concentrations during spring and early summer now regularly exceed the maximum concentration of the previous winter, while in the 1970s and 1980s this was not the case. This suggests that the proposed springtime ozone source is greater nowadays than before. Such a feature is consistent with increases in UV radiation accompanying the springtime stratospheric ozone hole. Model calculations show that the rate of nitrate photolysis in the South Pole snowpack has increased significantly since the onset of the ozone hole, such that production of NO2 in November has increased by 43% between the late 1960s and the late 1990s. It thus appears that the South Pole boundary layer is more highly oxidizing nowadays than under conditions before the onset of the ozone hole.last_img read more

Tedeschi Trucks Band Brings Their Magic To The Arizona Desert [Videos]

first_imgTedeschi Trucks Band brought their magic to the desert on Tuesday night with a spellbinding performance to open their two-night run at the Orpheum Theatre in Phoenix, Arizona. Following the opening act, Austin, Texas’ The Greyhounds, who perfectly set the tone for the evening, Tedeschi Trucks Band delivered a near-two-hour set mixed with old favorites and newer instant classics among the group’s legion of fan.Tedeschi Trucks Band Welcomes Blake Mills & Carey Frank For Night One In LA [Setlist/Photos]During the show, Tedeschi Trucks Band delivered some well-loved tunes from their earlier catalog, such as “It’s So Heavy”, “Part of Me”, and a bold “Bound for Glory” encore. The show also saw the group lay out a fiery rendition of Derek & The Dominoes’ “Anyday”, which offered some dynamic vocal work between Susan Tedeschi and Mike Mattison, as well as Tedeschi Trucks Band’s own take on Bob Dylan’s “Don’t Think Twice It’s Alright.” Also on the docket for the evening was the band’s relatively new number, “Shame”, which made its debut over the summer and was performed last during the group’s highly anticipated run at Los Angeles’ Orpheum Theatre this past weekend.Relive Tedeschi Trucks Band & Trey Anastasio’s Collab At The Beacon [Pro-Shot Video/Audio]However, one of the stand-out MVPs of the evening was Kofi Burbridge, who it’s safe to say is fully back in the saddle following his medical emergency earlier in the year that prevented him from touring with the group while he recovered. Last night’s show in Phoenix saw a stand-out performance by Burbridge, with his awe-inspiring flute solo leaving the crowd’s jaws dropped. Derek Trucks made his way across the stage to initiate the solo, and then followed it with a particularly effortless slide guitar rebuttal, underlying the undeniable chemistry between the two prolific musicians.Tedeschi Trucks Band Side Project, Whose Hat Is This?, Announces Winter Tour Tedeschi Trucks Band will return to the Orpheum Theatre in Phoenix, Arizona, on Wednesday. Thanks to Glen Petitt for capturing some of the magic from Tedeschi Trucks Band’s show in Phoenix last night. Enjoy his videos below.“Anyday”“Shame” [Photo: Phierce Photo; Show notes via Lizzie Morelli]last_img read more

Pisgah Jubilee Announces Inaugural Lineup: Dark Star Orchestra, Peter Rowan, Midnigh North, More

first_imgOn Monday, Black Mountain, NC’s Pisgah Brewing Company and All Good Presents announced the debut of Dark Star Orchestra‘s Pisgah Jubilee, an expansive two-day event with multiple stages of music, special beer offerings, local food, vendors, and more.The inaugural event will see two days and four sets of Dark Star Orchestra, which will include a special recreation of the Grateful Dead‘s May 3rd, 1979 show from the Charlotte Coliseum. The two-day event will also include performances from Peter Rowan, Midnight North, California Kind, The Lil Smokies, Josh Phillips Feels Good, Captain Midnight Band, Campfire Reverends, and The Snozzberries.Good Lovin’ VIP packages are available, which includes a guided brewery tour and tasting, early entry, preferred parking, private viewing area, private bar, private port-a-lets, VIP laminate, commemorative event poster, and poster signing with all members of Dark Star Orchestra. GA & VIP Tickets go on sale this Friday, March 15th at 10 a.m. (EST) here.The eighth annual Dark Star Jubilee will return to Legend Valley Music Center (formerly known as Buckeye Lake Music Center, home to some of the largest outdoor Grateful Dead concerts) in Thornville, Ohio on May 24th through 26th, 2019. Dark Star Orchestra, the festival’s host band, will perform three full, two-set shows over the course of the Memorial Day weekend event.The original Dark Star Jubilee will also see performances from Chris Robinson Brotherhood, The Marcus King Band, Leftover Salmon, Billy Strings, Dumpstaphunk, Donna The Buffalo, The Lil Smokies, Midnight North, The Nth Power, Jeff Mattson & Friends, Cris Jacobs Band, The Mighty Pines, Dino English & The Progfusionals, and The Sweet Lillies.last_img read more

N. Carolina state Sen. Jeff Jackson enters US Senate race

first_imgRALEIGH, N.C. (AP) — A North Carolina Democratic state senator has announced he’s running for the U.S. Senate in 2022. Jeff Jackson unveiled his bid Tuesday. He’s the second high-profile Democrat to enter the race to succeed Republican Sen. Richard Burr, who isn’t seeking reelection. Former state Sen. Erica Smith is running again after an unsuccessful campaign for the Democratic nomination in 2020. Republican incumbent Thom Tillis won in November, extending the GOP’s winning streak in Senate elections in North Carolina to four. Former Republican U.S. Rep. Mark Walker is also running for Burr’s seat. Jackson says he plans to ultimately visit all 100 counties.last_img read more

Public hearings on Vermont permit process in October

first_imgDeb Markowitz, Secretary of the Vermont Agency of Natural Resources, and Ron Shems, Chair of the Vermont Natural Resources Board, are holding public hearings in October on improving Vermont’s environmental and land use permitting processes. The purpose of the hearings is to hear from Vermonters about what works and what needs improvement in the ANR, Act 250 and municipal permitting and appeals processes. ‘It is important to hear from the public,’ said ANR Secretary Markowitz, ‘so we can address real issues people are experiencing in our environmental permitting process.’ Public input is sought on the following questions:How can each permit process best assure predictability and timeliness? How can each permit process best assure transparency and citizen input? What environmental permit processes can be consolidated? How can we avoid duplication in the permit process? How can we lower expenses in the permit process? Should the process be the same for a routine environmental permit (e.g., wastewater) as for a more complex permit (e.g., an Act 250 permit for a large project)? Are there other procedural issues in the environmental protection process to address?‘Our goal is to improve the permitting process where it needs fixing, without reducing environmental protection,’ said NRB Chair Ron Shems. Markowitz and Shems will be making recommendations to the Legislature in January 2012.The public hearings are being held around the state, as follows:Comments are also being accepted in writing and by email. For details, see: http://www.nrb.state.vt.us/news.htm(link is external) or contact Melanie Kehne at the Natural Resources Board at 802-828-3305.##last_img read more

Bar to review ABA’s model MJP guidelines

first_imgThe Board of Governors has created a committee to review the ABA’s new model rules that will allow lawyers licensed in one state to practice temporarily in another.Each state will review the proposals, but they are not required to make any changes.President Tod Aronovitz appointed board member John Yanchunis of Tampa to chair the panel after the ABA House of Delegates in August approved a number of multijurisdictional proposals that ease the restrictions on the practice of law across state lines. The nine changes to the ABA Model Rules of Professional Conduct were proposed by the ABA’s Commission on Multijurisdictional Practice.According to the ABA Journal, the new model rules allow a lawyer licensed and in good standing in one state to practice temporarily in another state if he or she: • Performs nonlitigation work that arises out of, or is reasonably related to, the lawyer’s home-state practice. • Represents clients in, or is participating in, an arbitration or mediation proceeding. • Provides litigation-related services in a state where he or she is or expects to be admitted. • Works in association with a lawyer licensed in the host state.Only one of the commission’s recommendations — a proposed rule that would make it easier to gain admission by motion — drew any opposition from the floor of the House of Delegates. That rule allows licensed lawyers who meet certain conditions to gain admission in a new state without taking its bar exam, according to the ABA Journal.Saul A. Wolfe of Livingston, NJ, a member of the ABA Board of Governors, said the proposed rule was contrary to the principle of state judicial regulation of the practice of law. “It would become a national admission-on-motion ticket,” he said of the proposal. “And that’s just wrong.”Despite the objections, the House approved the rule. It says lawyers applying for admission by motion should be licensed in good standing in another state and should have engaged in law practice for at least five of the last seven years. The rule also requires applicants to have a degree from an ABA-accredited law school and to meet certain ethical requirements.None of the changes will be binding on lawyers unless they are approved by the states. But most states pattern their own ethics codes on the ABA’s Model Rules. The Bar’s MJP 2002 Commission will submit a report to the Board of Governors and then to the Supreme Court either during the current Bar year or next year.The Bar’s original Special Commission on Multijurisdictional Practice studied the ABA MJP panel’s recommendations before they were sent to the House of Delegates and agreed with the bulk of the recommendations, but advocated in support of specific safe harbors that are clearly identified and set out, rather than a general category of safe harbors with illustrations.Other members of the Bar’s MJP 2002 Commission include: former President Ed Blumberg of Miami; Alan C. Brandt, Jr., of Ft. Lauderdale; Michele Kane Cummings of Ft. Lauderdale; Thomas M. Ervin, Jr., of Tallahassee; David Samuel Felman of Tampa; Linnes Finney, Jr., of Ft. Pierce; Marvin C. Gutter of Ft. Lauderdale; William Kalish of Tampa; Ruth Barnes Kinsolving of Tampa; Albert J. Krieger of Miami; Bruce Douglas Lamb of Tampa; Tom Pobjecky of Tallahassee; Arthur Halsey Rice of Miami; Tony Abate of Sarasota; former President Herman Russomanno of Miami; Victoria Wu of Silver Spring, MD; and David Milian of Miami. Others are expected to be appointed to the commission. Bar to review ABA’s model MJP guidelines Bar to review ABA’s model MJP guidelinescenter_img September 15, 2002 Regular Newslast_img read more

Head of hospital dies in coronavirus epicenter; global economic impact spreads

first_imgAsian shares fell and Wall Street was poised to retreat from record highs on Tuesday after the news.South Korean President Moon Jae-in said the economy was in an emergency situation and required stimulus as the epidemic had disrupted demand for South Korean goods.Singapore announced a US$4.5-billion financial package to help contain the outbreak in the city-state and weather its economic impact.In Hong Kong, leader Carrie Lam said the government would increase handouts to tackle the outbreak to HK$28 billion ($3.60 billion) from HK$25 billion, as it strives to ease the impact on the Chinese-ruled city’s protest-battered economy.Singapore Airlines Ltd said it would temporarily cut flights in the three months to May, as the epidemic hits demand for services touching and transiting the key travel hub.As global businesses sought to limit exposure to the virus, health authorities around the world searched for medical weapons.The president of the European Union Chamber of Commerce in China, Joerg Wuttke, said the world’s pharmacies may face a shortage of antibiotics and other drugs if the outbreak cannot be resolved soon, and accused Beijing of making supply-chain problems worse.Japan announced plans to use HIV drugs to combat the virus as a growing number of cases posed an increasing threat to the world’s third-largest economy, as well as public health. With 520, Japan has the most cases outside China.With Japan’s economy contracting, raising the risk of a recession, the spread of the virus has prompted Tokyo to put limits on public crowds while some companies are telling employees to work from home.The number of new daily infections in mainland China had not been below 2,000 since Jan. 30, while the daily death toll had not fallen below 100 since Feb. 11.Outside China, there are 827 cases in 26 countries and regions and five deaths, according to a Reuters count based on official statements.Chinese authorities say the stabilization in the number of new cases is a sign that measures they have taken to halt the spread of the disease are having an effect.Global health authorities had to keep on guard against a wider outbreak, said Jimmy Whitworth, a professor of international public health at the London School of Hygiene and Tropical Medicine.”We can hope that the reports of falling numbers of new cases in China do show that the epidemic has peaked in Hubei province, but it is still too early to be sure,” he said, referring to the central province where the outbreak began.World Health Organization Director-General Tedros Adhanom Ghebreyesus said Chinese data “appear to show a decline in new cases” but any apparent trend “must be interpreted very cautiously”.Topics : The head of a leading hospital in China’s central city of Wuhan, the epicenter of the coronavirus outbreak, died of the disease on Tuesday as Apple Inc warned its sales would suffer because of the epidemic, casting a chill on global stock markets.Chinese state television said Liu Zhiming, the director of Wuhan Wuchang Hospital, died at 10:30 a.m, the seventh health worker to fall victim. The hospital was designated to solely treat virus-infected patients.The number of new coronavirus cases in mainland China fell below 2,000 for the first time since January but the virus remains far from contained. The total death toll in China has climbed to 1,868, the National Health Commission said. There were 1,886 new confirmed infections, for a total of 72,436.China’s lockdown of cities and tough curbs on travel and movement have limited the spread of the virus outside the epicenter, but at great cost to the economy and global business.More than two dozen trade fairs and industry conferences have been postponed because of travel curbs and concerns about the spread of the virus, potentially disrupting deals worth billions of dollars.Apple became the latest company to warn of trouble, saying it would not meet its guidance for March-quarter revenue because of slower iPhone production and weaker demand in China.last_img read more

Arsenal receive Aaron Ramsey and Nacho Monreal injury boost but still sweat on Granit Xhaka’s fitness

first_img Top articles PLAY Manchester United captain Harry Maguire Read More About Connatix V67539 Rio Ferdinand tells Ole Gunnar Solskjaer to drop struggling by Metro Arsenal receive Aaron Ramsey and Nacho Monreal injury boost but still sweat on Granit Xhaka’s fitness More: FootballRio Ferdinand urges Ole Gunnar Solskjaer to drop Manchester United starChelsea defender Fikayo Tomori reveals why he made U-turn over transfer deadline day moveMikel Arteta rates Thomas Partey’s chances of making his Arsenal debut vs Man CityThe Spaniard featured on the left-hand side of a back three in the recent wins over Rennes and Manchester United and, like Ramsey, returned to first team training yesterday.Xhaka’s availability for the visit of Rafael Benitez’s side is less certain, however. The Switzerland midfielder was substituted with 10 minutes remaining of his nation’s Euro 2020 qualifier against Denmark with an abductor injury on Tuesday.‘Xhaka could not stay on the pitch,’ Swiss manager Valdimir Petkovic said afterwards. ‘He asked me ten minutes before to be replaced. ‘Granit had abductor problems, he could not do any more.’Arsenal failed to include news of the 26-year-old’s recovery in their injury bulletin on Friday morning ahead of Emery’s pre-match press conference.More: Manchester United FCRio Ferdinand urges Ole Gunnar Solskjaer to drop Manchester United starNew Manchester United signing Facundo Pellistri responds to Edinson Cavani praiseEx-Man Utd coach blasts Ed Woodward for two key transfer errors Aaron Ramsey missed both of Wales’ matches over the international break (Picture: Getty)Aaron Ramsey and Nacho Monreal will both be available for Arsenal’s match against Newcastle on Monday but Unai Emey is still sweating on the fitness of Granit Xhaka.Juventus-bound Ramsey had been largely frozen out by Emery earlier in the season but is re-establishing himself as a crucial component of Arsenal’s midfield as he enters the twilight of his Gunners career.The 27-year-old missed both of Wales’ matches with a thigh strain during the recent international break but returned to first team training on Thursday ahead of the Premier League resumption.Monreal, meanwhile, had been nursing a calf injury and did not fly out with the squad which embarked on a five-day warm weather training camp which culminated in Tuesday’s 3-2 friendly win over Al Nasr in Dubai.AdvertisementAdvertisementADVERTISEMENT Read More / Read More Skip Ad Full Screencenter_img Read More Advertisement Read More Skip Video Settings 1/1 Visit Advertiser website GO TO PAGE 1 min. story Comment SPONSORED Metro Sport ReporterFriday 29 Mar 2019 11:25 amShare this article via facebookShare this article via twitterShare this article via messengerShare this with Share this article via emailShare this article via flipboardCopy link Coming Next Advertisementlast_img read more

Governor Wolf Orders the Commonwealth Flag at Half-Staff to Honor Philadelphia Fire Department Lt. Benny Hutchins

first_imgGovernor Wolf Orders the Commonwealth Flag at Half-Staff to Honor Philadelphia Fire Department Lt. Benny Hutchins SHARE Email Facebook Twitter June 28, 2018center_img Flag Order,  Press Release,  Public Safety Harrisburg, PA –Governor Tom Wolf has ordered the Commonwealth flag to fly at half-staff on the Capitol Complex and throughout the City of Philadelphia to honor Philadelphia Fire Department member Lt. Benny Hutchins.Lt. Hutchins passed away Wednesday, June 27, 2018, after experiencing a medical emergency while at the Fire Academy on June 25.The Commonwealth flag shall be lowered immediately, Thursday, June 28, 2018, until sunset on the day of interment. All Pennsylvanians are invited to participate in this tribute.The United States flag shall remain at full staff during this tribute.last_img read more

Green light for Vigdis boosting station project

first_imgNorway’s Ministry of Petroleum and Energy has approved Equinor’s Vigdis boosting station project, which is located in the North Sea. Expected start-up is in the first quarter of 2021.Vigdis subsea installation. (Photo source Equinor Author André Osmundsen)The Equinor-operated Vigdis field is located in the Tampen area of ​​the North Sea. The field has been developed with seven subsea templates and produces oil and gas, which is then sent to the Snorre field for further export. It came on stream in 1997.Back in December 2018, Equinor decided to boost production at its subsea field Vigdis by almost 11 million barrels.The new project involves installing a pump on the seabed that helps increase recovery and accelerate production from the field, according to the ministry’s statement on Tuesday.“Increased recovery can create great values, and Vigdis is a good example of this. Now the field gets a new boost. With the Vigdis Boosting project, the recovery increases further and great values ​​are created for society,” says State Secretary Rikard Gaarder Knutsen.The boosting station will be connected to the pipeline to enhance the capacity between Vigdis and Snorre A, and will help bring the well stream from the subsea field up to the platform. Thanks to the boosting station wellhead pressure can also be reduced, which further increases production from the wells.In addition to the subsea boosting station the project will involve some modifications to Snorre A, which receives oil from the Vigdis field, and Snorre B, supplying the new boosting station with power from a new umbilical.“Vigdis has already produced twice what it thought was possible when the field was put into production. This project increases value creation from the field and gives new assignments to the supplier industry,” said Gaarder Knutsen.Spotted a typo? Have something more to add to the story? Maybe a nice photo? Contact our editorial team via email. Also, if you’re interested in showcasing your company, product or technology on Offshore Energy Today please contact us via our advertising form where you can also see our media kit.last_img read more