Temporal variation in Antarctic sea-ice: analysis of a long term fast-ice record from the South Orkney Islands

first_imgDetection of climate-induced change in marine ecosystems requires a knowledge of the underlying variability of the environment. This paper uses a range of datasets to investigate the interannual variability in Southern Ocean sea-ice dynamics. We present the first analysis of a series of fast-ice duration data from Signy Island, which we have cross-calibrated and combined with an earlier series from the same island group. The combined series covers the period from 1903 to the present day. The analyses indicate that there has been a long term decline in the duration of sea-ice at the South Orkney Islands in the north-west Weddell Sea. This change has not been a simple linear decline but appears to have been the result of a reduction in the duration of fast-ice during the 1940s and 1950s. There was a pronounced sub-decadal year cycle in fast-ice duration at the South Orkney Islands from the mid-1960s to 1990. In recent years this cyclicity has broken down and fast-ice duration has been greater than expected. Analyses of satellite data have shown that fast-ice duration at Signy Island reflects the larger-scale ice dynamics of the Weddell Sea. Investigation of the Weddell Sea ice dynamics in relation to circumpolar ice extents indicates that the position of anomalies in the maximum sea-ice extent field precesses around the Antarctic continent with a period of approximately 7–9 years. Analysis of atmospheric and oceanic connections with the sea ice variability show that there are signals in both regimes. This environmental variability has significant implications for ecosystem function and the detection of short-term and long-term ecological change.last_img read more

Other Sports India Men’s Hockey Team On Par With Germany, Holland And Australia: Dhanraj Pillay

first_imghighlights India Men’s Hockey Team has not qualified yet for 2020 Tokyo Games.India hockey has not won a gold medal since 1980 Moscow Olympics.India failed to qualify in the 2008 Olympics in Beijing. Mumbai: Insisting that India is currently at par with other leading hockey playing nations, four-time Olympian Dhanraj Pillay says he is confident of the national team’s qualification for next year’s Tokyo Games. The draw to determine the matches of the upcoming FIH Hockey Olympic qualifiers will be held on September 9 at the International Hockey Federation (FIH) headquarters in Lausanne, Switzerland.  It will be conducted by FIH CEO Thierry Weil and will be streamed live on the FIH Facebook page. 14 men’s and 14 women’s teams, including India, will be involved in the draw.  “Right now, we (India) are at par with Australia, Germany, Holland, Argentina, Belgium and so they (the team) should not be scared to face any team and move ahead with full confidence,” Pillay told reporters in Mumbai on Thursday night after attending a National Sports Day function organised by the Maharashtra government.  Pillay, who also played in four World Cups apart from four Asian Games, said the way the men’s national team was performing right now, they would surely make it to the Tokyo Games. “It is very important that first we qualify for the Olympics. It is not only my dream but that of the entire hockey fraternity that Olympics medal should come to India because last was in 1980 Games. After that we have struggled to get a medal in the Olympics,” he noted.  India won the last medal in hockey at the Olympics — a gold — in the 1980 summer Games at Moscow, but after that the country hasn’t tasted any success at the quadrennial event. They had even failed to qualify for the 2008 Beijing Olympics.  The former skipper feels the real work for coach Graham Reid and his men would begin after qualifying for the Olympics.   “The way the team is performing and playing right now, I am confident that they will qualify for the Olympics and after that their (real) works starts because Olympics is a different ball game and you cant take even one match lightly. Points are important in every match and you will be playing 5-6 (teams) in alternate days,” Pillay said.  Pillay, who hails from Khadki area in Pune, also heaped praise on Australian Reid, saying he was doing his job earnestly. “As of now he (Reid) is doing a good job. His job is to coach and he is doing the job earnestly,” Pillay signed off.center_img For all the Latest Sports News News, Other Sports News, Download News Nation Android and iOS Mobile Apps.last_img read more

Ronaldinho Held in Paraguay over Fake Passport Claims

first_imgRonaldinho Former Brazil forward Ronaldinho is being held by police in Paraguay for allegedly using a fake passport to enter the country, authorities announced Thursday.Police searched a hotel in the capital, Asuncion, on Wednesday, where the star had been staying with his brother.Paraguay’s interior minister told ESPN Brazil that the pair had not been arrested but are under investigation. Minister Euclides Acevedo also said they deny wrongdoing and are co-operating with the authorities.In July 2019, the player reportedly had his Brazilian and Spanish passports confiscated over unpaid taxes and non-payment of fines for illegally building on a nature reserve.The 39-year-old twice World Player Of The Year had travelled to Paraguay to promote a book and a campaign for underprivileged children.Another man who travelled with the brothers – 45-year-old Wilmondes Sousa Lira – has also been held.Ronaldinho was the 2004 and 2005 World Player of the Year and enjoyed the prime of his career at Spanish giants Barcelona. He won the World Cup in 2002 alongside fellow superstar forwards Ronaldo and Rivaldo.Ronaldinho’s net worth is estimated at £80-100m and he is reported to charge around £150,000 for a single promoted Instagram post.Share this:FacebookRedditTwitterPrintPinterestEmailWhatsAppSkypeLinkedInTumblrPocketTelegramlast_img read more