Open-ocean polynyas in the Weddell Sea of Antarctica are the product of deep convection, which transports Warm Deep Water (WDW) to the surface and melts sea ice or prevents its formation. These polynyas occur only rarely in the observational record, but are a near-permanent feature of many climate and ocean simulations. A question not previously considered is the degree to which the Weddell Polynya affects the nearby Filchner-Ronne Ice Shelf (FRIS) cavity. Here we assess these effects using regional ocean model simulations of the Weddell Sea and FRIS, where deep convection is imposed with varying area, location, and duration. In these simulations, the idealised Weddell Polynyas consistently cause an increase in WDW transport onto the continental shelf, as a result of density changes above the shelf break. This leads to saltier, denser source waters for the FRIS cavity, which then experiences stronger circulation and increased ice shelf basal melting. It takes approximately 14 years for melt rates to return to normal after the deep convection ceases. Weddell Polynyas similar to those seen in observations have a modest impact on FRIS melt rates, which is within the range of simulated interannual variability. However, polynyas which are larger or closer to the shelf break, such as those seen in many ocean models, trigger a stronger response. These results suggest that ocean models with excessive Weddell Sea convection may not be suitable boundary conditions for regional models of the Antarctic continental shelf and ice shelf cavities.
View post tag: Defence View post tag: News by topic August 15, 2013 View post tag: Naval View post tag: enter View post tag: Blast-Hit Share this article View post tag: Defense Authorities View post tag: Sindhurakshak View post tag: Navy View post tag: DIVERS UPDATE 2: Divers Enter Blast-Hit INS Sindhurakshak Divers of the Indian Navy have managed to enter diesel-electric submarine INS Sindhurakshak that sank partially having been hit by twin blasts caused by an explosion shortly after midnight on 14 August 2013, at the Naval Dockyard in Mumbai, the Associated Press reports.Nevertheless, the divers still haven’t reached any of the potential crew survivors that were trapped inside the sub when the explosions occurred.India’s Defence Minister A. K. Antony, who was rushed to Mumbai in the aftermath of the accident, extended his deepest condolences at a press conference held yesterday to the Navy along with the family members of the sailors trapped in the submarine.Efforts are under way to ascertain the safety of the personnel and salvage of the submarine.The explosion, which was accompanied by two simultaneous blasts is said to have occurred in the torpedo compartment, therefore 18 personnel on board are feared to be dead.[mappress]Naval Today Staff, August 15, 2013 Back to overview,Home naval-today UPDATE 2: Divers Enter Blast-Hit INS Sindhurakshak View post tag: INS
Sometimes internal memos get leaked. Or they get posted for everyone to share.Nothing clandestine about how Fox Sports made sure an in-house missive from FS1 chief Jamie Horowitz and right-hand man John Entz got up on its “Press Pass” website Tuesday, based on how the “team” was lauded for having Oct. 10-16 rank as the highest-rated and most-watched week in the history of the channel that was launched three years ago.It was also the first time FS1 had eclipsed ESPN in weekly primetime and total-day audience.There was, of course, all the hopes and dreams of Chicago Cubs fans behind it. The “memo” came a day after a Monday press release touting the Dodgers’ 1-0 win over the Cubs in NLCS Game 2 from Wrigley Field as attracting 7.3 million viewers, according to overnight figures, which set an undisputed audience record for the channel still trying to promote the heck out of the Bayless-Sharpe “Undisputed” show. That game had a 10.8 rating in L.A., and 23.9 in Chicago.Without a release issued since then, we can report the FS1 coverage of Game 3 on Tuesday from Dodger Stadium — the Dodgers’ 6-0 win — had a 4.7 rating and averaged 6.5 million viewers (or 6.85 million when factoring in online streaming and Fox Deportes) to make it the second-most watched telecast in FS1 history. The L.A. market was even better than Game 2 — an 11.7 mark, best for FS1 in its home city.However, with the third presidental debate going up against NLCS Game 4 on Wednesday, the Cubs’ 10-2 win attracted 5.813 million viewers and had a 4.1 rating and seven share. L.A. posted just a 7.8 rating/13 share while Chicago pulled a 21.2/32, which doesn’t even take into account those thousands watching in a local bar.The Thursday night Game 5 will be a test as well for the Chicago market, as it goes up against the Bears-Packers NFL game on the NFL Network and the CBS affiliates.• So why did the Fox Sports 1 pre- and postgame show go on the road to Wrigley Field for Games 1 and 2 last week, but was a no-show at Dodger Stadium for Games 3, 4 and 5? The crew featuring Pete Rose, Alex Rodriguez and Frank Thomas stayed in the friendly confines of the L.A. studio on Pico because it made more sense logistically and financially, according to a Fox source, even if it would have made for a better visual having the guys planted in the Dodger Stadium parking lot and challenging Cubs and Dodgers fans to commingle peacefully.NFL• How Week 7 of the NFL shakes out for the L.A. market — and why Channel 2 will have three games Sunday because of it. Dan Fouts chimes in as well on the Rams’ London excursion.College football• Gus Johnson, Joel Klatt and Shannon Spake have UCLA’s 1 p.m. Rose Bowl contest against Utah on Fox (KTTV-Channel 11). More on the rest of Week 8 in the L.A. TV market (with USC taking a bye week) at this link.WNBA• Ryan Ruocco, Rebecca Lobo and Holly Rowe will be the ESPN2 crew calling the deciding Game 5 of the WNBA Finals between the Sparks and Lynx from Minneapolis at 5 p.m. Thursday.• Thanks again to Rowe for giving us more insight into her recent cancer battle and how working WNBA games has contributed to her recovery process. Rowe goes from this game to covering Arkansas at Auburn on Saturday.Soccer• The Galaxy’s regular-season finale against FC Dallas at the StubHub Center (Sunday, 1 p.m., FS1, with John Strong, Brad Friedel and Julie Stewart-Binks) is an exercise in getting ready for the start of next week’s playoffs — and the postseason is hardly new for the franchise that has qualified in 18 of their 21 seasons, for an 86 percent rate. Dallas, meanwhile, is trying to secure the No. 1 spot in the West as well as capture the Supporters Shield.Most interesting to Galaxy fans, who already know the team is locked into the third spot in the Western Conference and will have a home single-elimination game, is who they will play either Wednesday or Thursday next week.That feeds into how ESPN will cover “Decision Day” as they’re calling it. All 10 league matches are played at the same time Sunday, and ESPN has Seattle-Real Salt Lake (Adrian Healey, Taylor Twellman), while ESPN2 will do a “whiparound” coverage of all games in progress with Max Bretos, Alejandro Moreno and Brian Dunseth also starting at 1 p.m.Also• Tony Kornheiser and Michael Wilbon hit the 15-year mark for ESPN’s “Pardon The Interruption” on Monday. Their reward: More years of doing this. Said Kornheiser: “The fact that ESPN would give me yet another extension at my age indicates one of two things: One, they have never actually seen me on television. Two, they feel they are saving money on health insurance because they think I will have all my expenses covered by Medicare. Either way I am thrilled to be doing PTI with Wilbon and scaring the children.”• Bottoms up to FS1’s Katie Nolan for her performance on Comedy Central’s “Drunk History,” trying to explain how President Teddy Roosevelt helped progress the sport of football. This lesson might have been punctuated by interesting the fact that Roosevelt’s actions led to the creation of the NCAA governing board (which did not mandate helmets until 1939), but, hey, why ruin a sloppy story?At least Nolan ended her rather rudimentary lecture while under the influence to host Derek Waters and all the young male viewers who have fantasized what it would be like to be in a room where she might be tipsy and loose-lipped: “There was a national standard for what football was … and it was great … and it was all great because of Teddy Roosevelt … and like, nobody knows that. They just think, ‘Teddy Roosevelt, oh, President’ or ‘Teddy Roosevelt, oh, you mean Franklin?’ because we’re young and dumb and nobody reads a goddamn book anymore.”Or, they just get learned from “Drunk History.”More media notes going into the weekend at www.insidesocal.com/tomhoffarth. The fulcrum of the Cubs-Giants NLDS Game 4 — combined with the centrifugal force of the Dodgers-Cubs NLCS Games 1 and 2 contests that could have easily been on Fox’s over-the-air channel but were instead relegated to an outlet trying to up its saturation from just seven of every 10 TV homes (still behind ESPN and ESPN2, pretty even with ESPNEWS and ESPNU and a bit more than NFL Network, MLB Network and WGN) — made this a simple physics equation.Mass appeal is the byproduct of energy and force-fed programming.Valuable live games like MLB playoffs have a buzz factor that permeates other parts of the day and night programming. Or, in realistic terms, there are examples for those who, once they find FS1 on the menu for a Dodgers game, they just keep it there all day and let it keep running for the fear they’ll miss the next contest.(Also, for what it’s worth, the memo cites having “our L.A. neighbors at USC” on the channel in helping the cause. But the last Trojans’ game on FS1 was Sept. 23. Games subsequently against ASU, Colorado and Arizona were on national Fox, Pac-12 Network and again national Fox. If the reference was to UCLA, well, the Bruins have yet to be on FS1).After weaving in more data that had to do with other chat shows on the channel surrounding the MLB games, Horowitz urged the staff to join them at the Fox Lot 101 multipurpose room to celebrate with “bagels, donuts and coffee!” Those bastards know how to party. Pass the lox, for cryin’ out loud. Newsroom GuidelinesNews TipsContact UsReport an Error