A pilot study for predicting ozone amounts for the general public in southern Chile

first_imgDuring 1994/95 a UK Overseas Development Administration (now Department for International Development – DFID) funded project was undertaken to predict ozone amount over Punta Arenas in southern Chile. A low-cost satellite receiver was installed to receive the digital data stream from the NOAA series of weather satellites. The ozone channel of the TIROS Operational Vertical Sounder instrument on the NOAA satellites was used to obtain maps of stratospheric ozone for the area around Punta Arenas in near real time. Also, a simple model was developed to predict the amount of column ozone from the forecast 100 hPa temperatures obtained from the UK Meteorological Office. These techniques used together made it possible to issue timely warnings to the general public of Punta Arenas before the Antarctic ozone hole moved across southern South America during the Austral spring.last_img read more

Total ozone dependence of the difference between the empirically corrected EP-TOMS and high-latitude station datasets

first_imgA comparison was made of the ground-based and satellite total ozone content (TOC) measurements in the atmosphere over the Antarctic stations Vernadsky, Halley and Amundsen–Scott and the Arctic station Barrow. A similar discrepancy analysis was performed using the global network of ground-based ozonometric stations from the beginning of regular satellite observations in 1978. Slowing of the long-term global ozone losses has been observed during the past decade and a recovery of the ozone layer is forecast for the coming decades. Therefore, the accuracy requirements for ozone measurements are increasing, which, in turn, requires corresponding analysis of the measurement errors. In this work, the Earth Probe Total Ozone Mapping Spectrometer (EP-TOMS) satellite data from 1996 to 2005 were used. Satellite daily TOC values were taken using version 8 of the algorithm introduced in 2004 and empirically corrected in 2007. The most persistent features of the relative EP-TOMS–Dobson difference are: (1) a significant increase in dispersion during the period of the spring Antarctic ozone hole and (2) a differing dependence on total ozone in the trend tendency and significance for EP-TOMS and Dobson datasets. The results indicate the influence of the specific conditions during the Antarctic ozone hole on the possible precision that could be achieved in assessments of Montreal Protocol effects in the ozone layer over this region.last_img read more

Extensive MIS 3 glaciation in southernmost Patagonia revealed by cosmogenic nuclide dating of outwash sediments

first_imgThe timing and extent of former glacial advances can demonstrate leads and lags during periods of climatic change and their forcing, but this requires robust glacial chronologies. In parts of southernmost Patagonia, dating pre-global Last Glacial Maximum (gLGM) ice limits has proven difficult due to post-deposition processes affecting the build-up of cosmogenic nuclides in moraine boulders. Here we provide ages for the Río Cullen and San Sebastián glacial limits of the former Bahía Inútil–San Sebastián (BI-SSb) ice lobe on Tierra del Fuego (53–54°S), previously hypothesised to represent advances during Marine Isotope Stages (MIS) 12 and 10, respectively. Our approach uses cosmogenic 10Be and 26Al exposure dating, but targets glacial outwash associated with these limits and uses depth-profiles and surface cobble samples, thereby accounting for surface deflation and inheritance. The data reveal that the limits formed more recently than previously thought, giving ages of 45.6 ka for the Río Cullen, and 30.1 ka for the San Sebastián limits. These dates indicate extensive glaciation in southern Patagonia during MIS 3, prior to the well-constrained, but much less extensive MIS 2 (gLGM) limit. This suggests the pattern of ice advances in the region was different to northern Patagonia, with the terrestrial limits relating to the last glacial cycle, rather than progressively less extensive glaciations over hundreds of thousands of years. However, the dates are consistent with MIS 3 glaciation elsewhere in the southern mid-latitudes, and the combination of cooler summers and warmer winters with increased precipitation, may have caused extensive glaciation prior to the gLGM.last_img read more

SUU Men’s Basketball Faces UNLV In Key Non-Conference Tilt

first_imgNovember 23, 2018 /Sports News – Local SUU Men’s Basketball Faces UNLV In Key Non-Conference Tilt FacebookTwitterLinkedInEmailLAS VEGAS-In seeking to build off of the best start in program history, Southern Utah men’s basketball faces UNLV Friday evening at the Thomas & Mack Center in Las Vegas.The Thunderbirds, who are 3-0 after edging Seattle U. 73-70 Sunday, are off to their best start since going to Division I in the 1988-99 season.Head Coach Todd Simon, a former UNLV assistant, seeks to lead the Thunderbirds to what could be one of the biggest wins in program history.The Rebels, under head coach Marvin Menzies, come into this game at 3-1, having won three straight games after dropping the season opener to Loyola Marymount.This will be the 12th time that the Rebels and Thunderbirds have met, with UNLV leading the all-time series 11-0.The Thunderbirds are led by small forward Cameron Oluyitan, a Boise State transfer, who averages 16.3 points and 3.3 rebounds thus far this season.The Rebels are led by forward Shakur Juiston, who averages 12.3 points and 6.5 rebounds per game on the young season. Brad James Written by Tags: Cameron Oluyitan/Loyola Marymount/Marvin Menzies/Seattle U./Shakur Juiston/SUU Men’s Basketball/Thomas & Mack Center/Todd Simon/UNLVlast_img read more

SUBGRU 7 Commander Tours USS Frank Cable

first_img View post tag: Naval View post tag: asia May 11, 2015 View post tag: News by topic Rear Adm. William Merz, commander, Submarine Group 7 (SUBGRU 7), made a visit to the submarine tender USS Frank Cable (AS 40), May 8.Merz met with commanding officers of local submarines aboard Frank Cable to discuss his expectations for units under his command.Afterwards Merz toured Frank Cable’s machine shop, pipe shop and dive compression chamber to see firsthand the capabilities the ship and crew bring to the fleet.Frank Cable, forward deployed to the island of Guam, conducts maintenance and support of submarines and surface vessels deployed to the U.S. 7th Fleet area of responsibility.[mappress mapid=”15927″]Image: US Navy SUBGRU 7 Commander Tours USS Frank Cable View post tag: Commander View post tag: Navy View post tag: SUBGRU 7 Back to overview,Home naval-today SUBGRU 7 Commander Tours USS Frank Cable Authorities View post tag: USS Frank Cable Share this articlelast_img read more

Protest without starving yourself

first_imgThe sounds of protest are familiar to Oxford students; blessed indeed are those who have never woken to the sounds of animal-rights activists making their clamorously anarchic way through town. Yet few of us take the chance to kick up a fuss ourselves. To pick one recent example, the so-called ‘Siege in Bonn Square’ was notable for inspiring almost nobody – for more than a week, Oxford failed to mobilise its forces in support of the trees. The spirit of ’68 barely limps on in 2008.I would argue that this is no bad thing. To attach oneself noisily to every cause in town is simply to devalue the currency of protest. As all political scientists know, direct action is usually indicative more of a lack of political clout than of an abundance of passion or support. Why it should also be an exercise in asceticism is beyond me.A relief then, that just as much could be accomplished through eating a hamburger or, dare I say it, drinking a rum and Coke. Bizarrely, those who wish to be politically effective often choose to do so in the isolation offered by an unfamiliar crowd – it’s easy to pour scorn on discussion groups, but, for Oxford students, it seems counter-intuitive to enter the fray without a really good idea why one is doing so.None of this means that there aren’t worthy campaigns out there, nor indeed that taking direct action is always a fruitless task. The seemingly innocuous ‘Oxford Interview Office’ recently opened, in interestingly close proximity to the McDonald’s on Botley Road. The establishment of such interrogation centres, intended to vet people before issuing their first passport or – more insidiously – placing them on the National Identity Register, is certainly something to worry any liberty-loving British subject. Although Oxford students will quickly apprehend both the danger and the indignity involved in being required to go through an interview process in order initially to leave the country, and later simply for existing, it seems unlikely that the clandestine encroachment of Big Brother will motivate many to march through the streets. Far better to attend the amusingly monikered ‘BBQ for the Grilling Centre’ arranged by Oxford No2ID this Sunday. Students needn’t feel guilty if they prefer their activism to involve discussion, fun, or free food. If liberty can’t taste sweet, what on earth is the point?  Ronald Collinson is Treasurer of Oxford Students for Liberty, whose Rum and Rights events run at 8pm on Mondays of even-numbered weeks this term. A group for the BBQ will meet outside the Saïd Business School at 12.15p.m. Contact 07753463973.last_img read more

Panini power

first_imgLantmännen Unibake has launched a grill-marked large panini, which will feature alongside the other products in its Panefresco range.With the bar marks already applied at the bakery, the new panini gives that just-grilled look however it’s prepared, whether by oven or contact grill. It comes pre-sliced with a hinge-cut, ready for filling. It simply needs defrosting, and filling before being heated through.last_img

Rapid-fire exchange

first_imgWith a wry smile, Marlon Kuzmick, associate director of the Bok Center for Teaching and Learning, kicked off a discussion dubbed the “Idea Exchange” with a simple prompt: “I would like to use social media to …”Hosted by the Office of the Vice Provost for Advances in Learning, the event on March 26 gathered faculty, staff, and students to discuss social media at Harvard. While civil in tone, the exchange began with participants throwing Kuzmick’s softball question right back at him.For many, including David Cox, assistant professor of molecular and cellular biology and of computer science, social media from Twitter to Tumblr have become tools like any other — such as a pencil that is well-worn, familiar, and, sometimes, dull.Cox, who developed a custom learning platform for his HarvardX online course “MCB80x: Fundamentals of Neuroscience,” said that he has no fewer than six Twitter handles. Each serves a different purpose. Some relate to work with professional academic societies. Others point specifically at his online course, which enrolls 30,000, and still others serve as a means to take on pet peeves anonymously.Jake Silberg ’15, an undergraduate with a start-up under his belt (Valet.io, a fundraising app), took the question a bit more literally, presenting a systematic tour of the social media landscape he sees on campus.“For students, Facebook is for friends you know and Twitter is for building your professional reputation as an expert or influencer,” he said. Instagram is somewhere in the middle, reaching broader, lesser-known audiences through as-it-happens snapshots. With a camera on every phone, sharing across all platforms has become increasingly visual. In fact, the right picture at the right time — like a group selfie of Oscar winners or a photo bomb with President Barack Obama — may be worth more than 1,000 words. It may be worth 1,000,000 retweets or shares.Perry Hewitt, the University’s chief digital officer, said she applauds the positive power of social media to “break down silos” and integrate and disseminate rather than control information across campus. Users, however, should know the often hidden risks inherent in going viral online.The speed-of-light nature of a Vine video or tweet is hard to fathom in the abstract. A seemingly innocuous tweet can take on new meaning in the near-instantaneous news cycle, particularly when the Harvard name is appended.Meghan Morrissey, a lead course developer at HarvardX, noted that in some cases going viral can be the intentional. She and the team behind “SW12x: China” created a YouTube sing-along-video to help students remember the order of China’s dynasties. The team members catered the video to Chinese audiences, uploading it to Chinese social-media sites. Voila, the video has scored more than 1 millions views, with about 90,000 coming from YouTube downloads and the rest via uploads through China’s video websites, its social media channels, and TV, among other sources.At the other extreme, Sue Goldie, Roger Irving Lee Professor of Public Health and director of the Harvard Global Health Institute, said she used Twitter in a more targeted manner, to make sure her kids were not in any trouble, as she assumed that the “Twitterverse” would tell her before anyone made the proverbial phone call.On a more serious note, while she has used social media to further her global health work and to encourage students to condense complicated arguments for a world with an attention span of 140 characters or fewer, she worries that free and open platforms may not be safe spaces, especially for groups that are disenfranchised or politically targeted.Graduate student Carla Martin, a College Fellow on African and African American Studies, echoed Goldie’s sentiment. Nonetheless, Martin said she is eager to further the use of technology to help students find their voices, especially women and minorities. In fact, the seeds of “I, Too, Am Harvard,” a Tumblr-fueled campaign to raise awareness about race and belonging at elite college campuses, came partially from an exercise she ran in one of her classes.But even as the small group shared success stories about using Twitter or Facebook to promote events and causes or implementing discussion-board software like Piazza to convene conversations, an undercurrent of concern swelled.Michelle Luo ’14, a computer science concentrator who has been a teaching fellow for CS50, “Introduction to Computer Science,” and an intern at Google, said she limited her personal use of social media because of privacy concerns. Morrissey said the same, as others nodded in agreement.Judith Singer, James Bryant Conant Professor of Education at the Harvard Graduate School of Education and senior vice provost for faculty development and diversity, captured the mood swing when she told of all the orphaned accounts she created on then- new social-media platforms, but later abandoned. Singer signed up for Facebook “to see what it was all about” in the days when users had to have a Harvard email address to join. She has rarely visited the site since.Goldie surmised that such reticence may come from the growing concern that there are “ethical and appropriateness issues” across all of the sites, buried in the 8-point type of legal waivers to which most users agree without much scrutiny.Moving conversations to safer, more controlled harbors, like custom-built tools, a longstanding strategy of some higher-education institutions, including Harvard, garners protection but also causes problems.Michael Mitzenmacher, Thomas J. Watson Sr. Professor of Computer Science, who runs the popular blog My Biased Coin and has conducted research on whether Groupons influence Yelp ratings, had one simple demand for administrators: “Do not create your own platforms! Harvard is not a software company.”Cox put it in simpler terms, saying, “We have to go to where the conversations are. Are we going to be part of the discussion where it is happening or try to unsuccessfully funnel them to one place?”By the end of the hour of friendly-fire debate, the initial question — how to use social media on and beyond campus — had come full circle while remaining open.Goldie got the last word, asking, “How can we use and exploit social media spaces to further conversations and yet keep these privacy security concerns in mind?”last_img read more

On the Blogs: Groups Call for U.S. Inquiry Into Utah-Oakland Port Project

first_img FacebookTwitterLinkedInEmailPrint分享From YubaNet (Nevada City, Calif.):Conservation, health, and good government groups today sent a letter to U.S. Attorney General Loretta Lynch calling for a formal investigation into potential legal and ethical violations in Utah’s extraordinary $53 million taxpayer-funded loan to build a deepwater terminal in Oakland, Calif., to export coal.The letter, which also was addressed to Gregory J. Gould, director of the Office of Natural Resources Revenue, and Mary Kendall, interim Inspector General of the Department of the Interior, cites Utah’s misuse of federal community development funds and the elaborate web of potential conflicts of interest that propelled the scheme through state agency and legislative approval processes with scant public scrutiny.“It’s staggering that the Legislature and Governor were willing to throw tens of millions in taxpayer money at a project so rife with conflicts of interest,” said Michael Shea, Policy associate at HEAL Utah. “It is very clear that someone from the outside should take a careful look at this.”The letter lays out the twists and turns in the decades-long effort to export Utah coal overseas through a Pacific port. Several Utah counties began seeking funding to build transport operations to export coal from mines owned by Bowie Resource Holding Partners as early as 2001. In late 2014, in a deal brokered by Jeffrey Holt, a private investment banker, “strategic infrastructure advisor” to the counties and then-chairman of the Utah Transportation Commission, the counties requested a $53 million loan from Utah’s Community Impact Board to finance the terminal.The Community Impact Board (CIB) is charged with administering proceeds from the royalties to the state under the federal Mineral Leasing Act (MLA). The Act restricts the use of the money to community planning, construction and maintenance of public facilities, and provision of public services to mitigate the adverse impacts of mining on the communities.The Community Impact Board approved the loan, and then, when questions arose about the misuse of funds, the 2016 legislature gave fast-track approval to Senate Bill 246, a procedure designed to evade the Mineral Leasing Act’s funding limitations by swapping state general fund money with Mineral Leasing Act money for the loan.“It is inconceivable that this is an intended or proper use of $53 million of MLA, CIB or taxpayer funds and this appears to represent the worst kind of corporate cronyism that members of the Utah legislature are usually so fond of rallying against,” said Joshua Kanter, Board Chair, of the Alliance for a Better Utah. “Diverting these funds is not only improper but will leave these communities without the money they really need to help them retool their economic base as the coal industry continues its decline. There has been no showing that there is a shortage of available port capacity for Utah coal or that exporting Utah coal to Asia makes economic sense, either of which is easily addressed by the free-market without this shell-game and abuse of the public trust.”Many of the bill’s proponents in the legislature and the governor who signed the bill had received campaign contributions from Bowie, the coal company expected to be the largest beneficiary of the export terminal deal. At the same time, Strategic Infrastructure Advisor Jeffrey Holt and his investment firm could reap millions if the project is completed.“From the very beginning, the proposal to use Utah taxpayer resources to prop up an out-of-state coal export terminal has never had the best interest of Utahns at heart,” said Lindsay Beebe, Utah Organizing Representative for the Sierra Club’s Beyond Coal campaign. “We need to develop real solutions to help our communities as our state transitions away from coal. Instead, our public officials have shown that they are more eager to hand out political favors than to help Utah communities across the state that deserve our support.”Meanwhile in California, public records and media reports revealed that Holt and port developer Phil Tagami attempted to conceal the plan to ship coal through the Oakland terminal, instead emphasizing that it would be used to ship agricultural products.Many residents near the terminal, who already are burdened by significant air pollution, have vocally opposed coal shipments through their communities due to the environmental and public health impacts.The Oakland City Council is meeting June 27 to consider placing “health and safety” restrictions on the operation of any coal terminal in the city. Utah’s legislation to transfer $53 million in state funds for the project also goes into effect July 1, lending increased urgency to the call for a federal investigation.Under the Mineral Leasing Act, the U.S. Attorney General has broad authority to bring civil or criminal actions when violations are uncovered.The Department of the Interior is charged with investigating and auditing the use of royalties under the act, and has the duty to ensure the integrity and accountability of its programs through the Office of the Inspector General.“SB 246 is a blatant attempt to circumvent the Mineral Leasing Act’s funding limitations,” said Chris Eaton, an attorney with Earthjustice. “The actions of Utah officials demonstrate that additional federal oversight is necessary to prevent this misuse of taxpayer dollars.”The groups hope to meet with Justice and Interior Department officials in the coming weeks to discuss the letter.“The contents of this letter require an external review by several oversight bodies,” said Tom Sanzillo, Director of Finance for the Institute for Energy Economics and Financial Analysis, and former First Deputy Comptroller for New York State. “I spent seventeen years in senior management of local and state government oversight agencies. The economic, fiscal, financial, environmental, governance, ethical and political red flags raised by the State of Utah’s actions are too numerous to ignore.”John Weisheit, co-founder of Living Rivers, added, “The Utah State Legislature and the Community Impact Board are laundering public money through the State Transportation Fund to provide financial assistance to energy corporations, and not to communities where it truly belongs. To bear this behavior from elected and appointed officials to me, as a Utah taxpayer, is embarrassing, and an audit is, at best, a minimalist request that should be honored.”The request for federal investigation is just one part of a multi-pronged effort to protect Oakland from dirty coal shipments. In addition to pressing the Oakland City Council to adopt health and safety regulations for the proposed Oakland coal terminal, Oakland residents and other concerned citizens are supporting legislation pending in the California State Legislature which would require additional environmental review for this type of terminal project and bring more transparency to project funding.“From the start, the plan to use Utah’s community-impact funds to make a risky investment in the coal industry has looked suspicious,” said Aaron Paul, Staff Attorney for Grand Canyon Trust. “We hope that an inquiry by the federal government will help steer those funds back where they belong—in Utah’s communities.”The letter was sent on behalf of Alliance for a Better Utah, HEAL Utah, the Institute for Energy Economics and Financial Analysis, Sierra Club, Center for Biological Diversity, Grand Canyon Trust, Earthjustice (on behalf of Sierra Club and Grand Canyon Trust), Living Rivers, and The Sloan Law Firm (on behalf of Living Rivers).Read the letter:http://earthjustice.org/sites/default/files/files/FINAL%20letter%20to%20investigate%20CIB%20loan_0.pdfGroups Call for Federal Investigation of Utah Plan to Finance Oakland coal Export Terminal On the Blogs: Groups Call for U.S. Inquiry Into Utah-Oakland Port Projectlast_img read more

Race Ahead: Dirty Dan Dash

first_imgTOP RACES AND EVENTS TO HIT BEFORE THE END OF THE YEARDIRTY DAN DASH MUD RUNWhen: November 3, 2013Where: Danville, Va.What: Adventure RaceStart time: 1 pmWebsite: www.DirtyDanDash.comThe Dirty Dan Dash, presented by Danville Regional Medical Center, is a 3.7-mile dash through Danville’s River District, Dan Daniel Memorial Park and along the Riverwalk trail. The course features various obstacles, challenges and one nasty mud pit.EVENT [email protected] OUT OUR FULL LIST OF THE TOP RACES AND EVENTS OF THE END OF THE YEAR IN OUR FALL RACE & EVENT GUIDElast_img read more