UK-HiGEM: The New U.K. High Resolution Global Environment Model – Model description and basic evaluation

first_imgThis article describes the development and evaluation of the U.K.’s new High-Resolution Global Environmental Model (HiGEM), which is based on the latest climate configuration of the Met Office Unified Model, known as the Hadley Centre Global Environmental Model, version 1 (HadGEM1). In HiGEM, the horizontal resolution has been increased to 0.83° latitude × 1.25° longitude for the atmosphere, and 1/3° × 1/3° globally for the ocean. Multidecadal integrations of HiGEM, and the lower-resolution HadGEM, are used to explore the impact of resolution on the fidelity of climate simulations. Generally, SST errors are reduced in HiGEM. Cold SST errors associated with the path of the North Atlantic drift improve, and warm SST errors are reduced in upwelling stratocumulus regions where the simulation of low-level cloud is better at higher resolution. The ocean model in HiGEM allows ocean eddies to be partially resolved, which dramatically improves the representation of sea surface height variability. In the Southern Ocean, most of the heat transports in HiGEM is achieved by resolved eddy motions, which replaces the parameterized eddy heat transport in the lower-resolution model. HiGEM is also able to more realistically simulate small-scale features in the wind stress curl around islands and oceanic SST fronts, which may have implications for oceanic upwelling and ocean biology. Higher resolution in both the atmosphere and the ocean allows coupling to occur on small spatial scales. In particular, the small-scale interaction recently seen in satellite imagery between the atmosphere and tropical instability waves in the tropical Pacific Ocean is realistically captured in HiGEM. Tropical instability waves play a role in improving the simulation of the mean state of the tropical Pacific, which has important implications for climate variability. In particular, all aspects of the simulation of ENSO (spatial patterns, the time scales at which ENSO occurs, and global teleconnections) are much improved in HiGEM.last_img read more

JUST-IN: Brazil forward completes Arsenal switch

first_img Promoted Content6 Of The Best 90s Shows That Need To Come Back ASAP6 Ridiculous Health Myths That Are Actually TrueWho Earns More Than Ronaldo?A Hurricane Can Be As Powerful As 10 Atomic Bombs7 Black Hole Facts That Will Change Your View Of The UniverseHere Are The Top 10 Tiniest Mobile Phones On The Planet!10 Risky Jobs Some Women Do10 Phones That Can Easily Fit In The Smallest PocketPortuguese Street Artist Creates Hyper-Realistic 3D Graffiti7 Theories About The Death Of Our UniverseWho’s The Best Car Manufacturer Of All Time?9 Facts You Should Know Before Getting A Tattoo Read Also: Uzoho ready for new Cypriot First Division season Technical director Edu said: “I know him very well, since a long time ago because we’ve been working together for the Brazilian national team and of course I was following him because he played for another club. He has a lot of fantastic attributes as a person, as a football player of course, his character. I’m 100 per cent sure that everybody in the dressing room, the fans, myself and Mikel will enjoy having Willian in our side.“ Willian will wear the number 12 shirt. The deal is subject to the completion of regulatory processes. FacebookTwitterWhatsAppEmail分享 Throughout his seven years at Chelsea, he won two Premier League titles, an FA Cup and the Europa League. Willian made 339 appearances, with 63 goals and 56 assists in that time. Loading… “I believe he’s a player that can really make a difference for us,” Mikel Arteta said. “We have been monitoring him for the past few months, we had a clear intention to strengthen in the attacking midfielder and the winger positions [and] he is a player that gives us a lot of versatility, he can play in three or four different positions. He has the experience of everything in the football world but to still have the ambition to come here and contribute to bring the club where it belongs. I have been really impressed with all the talks I have had with him and how much he wanted to come.” Willian has made 70 appearances and has scored nine goals for Brazil, making his international debut in 2011. He has since represented his country at the 2014 and 2018 World Cups, the 2015 Copa America, the Copa America Centenario, and the 2019 Copa America where he was a key member of the squad that lifted the trophy on home soil Brazil international Willian has signed a three-year deal to joined Arsenal on free transfer ahead of the 2020/21 season. The 32-year-old former Chelsea forward has a wealth of experience and has made more than 600 club appearances in a career spanning 13 seasons. Willian started at Brazilian side Corinthians, before joining Shakhtar Donetsk in August 2007. In his six years there, he won four Ukrainian Premier League titles and the Uefa Cup in 2009. Four years later, he briefly signed for Anzhi Makhachkala before joining Chelsea, winning the Premier League and League Cup in his second season in England.last_img read more

Swansea chief plans ‘shake-up’

first_img The Welsh outfit already have a new permanent manager in place with Garry Monk, in temporary charge since the dismissal of Michael Laudrup in February, signing a three-year contract last week. And with regard to what the coming weeks and months might hold for the Swans, Jenkins, quoted on www.walesonline.co.uk, said: “I think a shake-up is needed – and whatever number we manage to bring in, whether it’s two, three, four or five players, they need to be first-team starters. That’s where we are at. Press Association Swansea chairman Huw Jenkins feels a “shake-up” is needed at the club this summer, with players definitely good enough to be first-team starters coming in and “new motivation” being cultivated. They won five and lost six of their 14 top-flight games under Monk, with three victories coming in the final four matches. Squad modifications have begun, with the club on Monday confirming Leroy Lita, David Ngog and two players they have had on loan, Roland Lamah and Alvaro Vazquez, are to depart. The Swans have also announced they will be heading to the United States as part of their pre-season preparations. Monk’s men will be based in Chicago from July 6 – 20 and play friendlies against Chivas Guadalajara on July 16 and Minnesota United on July 19. “It’s all well and good having 20, 25 players in the squad, but we need to improve the starting XI – and I don’t think anybody would argue with that. “Some people have said we signed too many players from Spain last year, but ultimately it doesn’t matter where they come from, as long as they are good enough it will be fine. “I think the only thing you would say about the squad in general is that a lot of the players we brought in last year didn’t make the starting XI. The change we need to make is to ensure they are good enough.” He added: “We’ll always be looking in the market for players at the right price and we’ve got to judge, whether it’s a £2million Michu or a £12million Wilfried Bony (their record signing), whether it’s right for the club at the time. “We’ll always weigh up those decisions and take them as they come. “With the new management in place, there needs to be new motivation in the squad and we all need to be going forward in a different way next year. “We need to make sure we achieve that by getting the right mixture of the squad.” Swansea finished their 2013/14 Barclays Premier League campaign in 12th place, nine points clear of the relegation zone. last_img read more