Advective pathways near the tip of the Antarctic Peninsula: Trends, variability and ecosystem implications

first_imgPathways and rates of ocean flow near the Antarctic Peninsula are strongly affected by frontal features, forcings from the atmosphere and the cryosphere. In the surface mixed layer, the currents advect material from the northwestern Weddell Sea on the eastern side of the Peninsula around the tip of the Peninsula to its western side and into the Scotia Sea, connecting populations of Antarctic krill (Euphausia superba) and supporting the ecosystem of the region. Modelling of subsurface drifters using a particle tracking algorithm forced by the velocity fields of a coupled sea ice-ocean model (ORCA025-LIM2) allows analysis of the seasonal and interannual variability of drifter pathways over 43 years. The results show robust and persistent connections from the Weddell Sea both to the west into the Bellingshausen Sea and across the Scotia Sea towards South Georgia, reproducing well the observations. The fate of the drifters is sensitive to their deployment location, in addition to other factors. From the shelf of the eastern Antarctic Peninsula, the majority enter the Bransfield Strait and subsequently the Bellingshausen Sea. When originating further offshore over the deeper Weddell Sea, drifters are more likely to cross the South Scotia Ridge and reach South Georgia. However, the wind field east and southeast of Elephant Island, close to the tip of the Peninsula, is crucial for the drifter trajectories and is highly influenced by the Southern Annular Mode (SAM). Increased advection and short travel times to South Georgia, and reduced advection to the western Antarctic Peninsula can be linked to strong westerlies, a signature of the positive phase of the SAM. The converse is true for the negative phase. Strong westerlies and shifts of ocean fronts near the tip of the Peninsula that are potentially associated with both the SAM and the El Niño-Southern Oscillation restrict the connection from the Weddell Sea to the west, and drifters then predominantly follow the open paths to South Georgia and the east. Over the 43-year time series, the number of drifters advected into the Bellingshausen Sea decreases significantly by 23% and the travel time to South Georgia shortens significantly by 19% which corresponds to 56 days. We propose that these trends are linked, at least in part, to the increasingly positive trend in the SAM and, as such, this suggests an additional anthropogenic source of change to the regional ecosystem.last_img read more

Dave Matthews Band Announces First New Album Since 2012, ‘Come Tomorrow’, Due Out In June

first_imgFans have been eagerly awaiting a new studio album from Dave Matthews Band, and the official announcement has finally arrived. As noted by the band in a Facebook post, Dave Matthews Band has plans to release a new album titled Come Tomorrow on June 8th via RCA Records. Come Tomorrow will be Dave Matthews Band’s ninth studio release, serving as a follow up to 2012’s Away From The World, the critically and commercially successful hit that debuted at #1 on the Billboard 200.As noted in the post, the album was created in studios across the United States and with several different producers, including John Alagia, Mark Batson, Rob Cavallo and Rob Evans. The album, which was crafted in between tours, also features artwork from Béatrice Coron, “who creates narrative allegories in silhouette to render archetypal stories.”Once released, Come Tomorrow will be available in CD, digital, and cassette formats. The band also notes that they’ll release a limited-edition white-vinyl 4 LP set exclusively through the DMB and Warehouse Official stores. You can pre-order Dave Matthews Band’s new album, due out on June 8th, here.Dave Matthews Band is also currently gearing up for their extensive 2018 summer tour, which kicks off on May 18th at The Woodlands, Texas’ Cynthia Woods Mitchell Pavilion. The tour follows which follows a year-long hiatus for the band in 2017, save for a few special performances. Back in February, longtime violinist Boyd Tinsley left the band and will not be a part of the tour, though his involvement on the album is still unknown.For those who have a chance to catch Dave Matthews Band on the road this summer, people who purchase tickets before May 17th will receive their choice of a CD or digital download of Come Tomorrow. You can head to Dave Matthews Band’s website for more information. DAVE MATTHEWS BAND – SUMMER 2018 NORTH AMERICAN TOUR5/18 The Woodlands, TX Cynthia Woods Mitchell Pavilion presented by Huntsman5/19 Dallas, TX Starplex Pavilion5/22 Austin, TX Austin360 Amphitheater5/26 Atlanta, GA Cellairis Amphitheatre at Lakewood5/27 Orange Beach, AL The Wharf Amphitheater5/29 Brandon, MS Brandon Amphitheater5/30 Rogers, AR Walmart AMP – Arkansas Music Pavilion6/1 Burgettstown, PA KeyBank Pavilion6/2 Cuyahoga Falls, OH Blossom Music Center6/5 Syracuse, NY Lakeview Amphitheater6/6 Clarkston, MI DTE Energy Music Theatre6/7 Cincinnati, OH Riverbend Music Center6/9 Bristow, VA Jiffy Lube Live6/12 Gilford, NH Bank of New Hampshire Pavilion6/13 Gilford, NH Bank of New Hampshire Pavilion6/15 Camden, NJ BB&T Pavilion6/16 Camden, NJ BB&T Pavilion6/22 Mansfield, MA Xfinity Center6/23 Hartford, CT Xfinity Theatre6/27 Darien Center, NY Darien Lake Amphitheater6/29 Chicago, IL Huntington Bank Pavilion6/30 Chicago, IL Huntington Bank Pavilion7/1 Milwaukee, WI American Family Insurance Amphitheater7/6 Noblesville, IN Ruoff Home Mortgage Music Center7/7 Noblesville, IN Ruoff Home Mortgage Music Center7/10 Toronto, ON Budweiser Stage7/11 Ottawa, ON Ottawa Bluesfest7/13 Saratoga Springs, NY Saratoga Performing Arts Center7/14 Saratoga Springs, NY Saratoga Performing Arts Center7/17 Wantagh, NY Northwell Health at Jones Beach Theater7/18 Holmdel, NJ PNC Bank Arts Center7/20 Raleigh, NC Coastal Credit Union Park at Walnut Creek7/21 Virginia Beach, VA Veterans United Home Loans Amphitheater at Virginia Beach7/24 Charlotte, NC PNC Music Pavilion – Charlotte7/25 Tampa, FL MIDFLORIDA Credit Union Amphitheatre7/27 West Palm Beach, FL Coral Sky Amphitheatre at the S. Florida Fairgrounds7/28 West Palm Beach, FL Coral Sky Amphitheatre at the S. Florida Fairgrounds8/24 Denver, CO Fiddler’s Green Amphitheatre8/25 Denver, CO Fiddler’s Green Amphitheatre8/28 Bend, OR Les Schwab Amphitheater8/31 Quincy, WA Gorge Amphitheatre9/1 Quincy, WA Gorge Amphitheatre9/2 Quincy, WA Gorge Amphitheatre9/7 Stateline, NV Lake Tahoe Outdoor Arena at Harveys9/8 Mountain View, CA Shoreline Amphitheatre at Mountain View9/10 Los Angeles, CA Hollywood BowlView All Tour Dateslast_img read more