| Title | Seasonal and annual variations of the Weddell Sea polynya based on the monthly average ice distribution and climate data [Sezonnaia i mezhgodovaia izmenchivost' polyn'i Ueddella po srednemesyachnym klimaticheskim dannym o splochennosti morskikh l'dov] |
| Author | Artamonov, I.V.; Bukatov, A.A.; Eremeev, V.N.; Skripalyeva, E.A. |
| Author Affil | Artamonov, I.V., Natsional'naia Akademiia Nauk Ukrainy, Morskoi Gidrofizicheskii Institut, Sevastopol, Ukraine |
| Source | Ukrayins'kii Antarktichnii Zhurnal = Ukrainian Antarctic Journal, Vol.8, p.186- 194, . Publisher: Ukrayins'kii Antarktichnii Tsentr, Kiev, Ukraine. ISSN: 1727- 7485 |
| Publication Date | 2009 |
| Notes | In Russian with English summary. 11 refs. Ant. Acc. No: 88659. GeoRef Acc. No: 300559 |
| Index Terms | climate; ice; ice rafting; polynyas; Antarctica; Southern Ocean--Maud Rise; annual variations; Antarctic Circumpolar Current; cyclic processes; Maud Rise; sea ice; seasonal variations; Southern Ocean; spatial data; spatial distribution; Weddell Sea |
| Abstract | On the basis of data on sea ice seasonal and interannual Weddell polynya variability is analyzed. Values of sea ice closeness (in percent) in 1°×1° grid for the period 1969-2008 from data set of British Atmospheric Data Centre (BADC) HadISST ICE and NCEP Data are used. For Southern Ocean sector between 60°S and Antarctica coast and 10°W-10°E for each year montly average summary areas with ice various closeness are calculated. Here occurrence of Weddell polynya is most probable. It is shown, that in average annual climatic ice field different closeness Weddell polynya is shown in decrease of 35-45% ice closeness in area between 60-65°S and 0-10°E. In climatic seasonal cycle Weddell polynya is observed in November-December as closed space of ice with closeness decrease by 20-30%. This space separated from open ocean by the crosspiece of solid ice. In this area the maximum of annual harmonic amplitude in seasonal variability of sea ice closeness is marked. Climatic seasonal scheme of Weddell polynya formation undergoes significant interannual variability which is connected with large scale variability in the ocean-atmosphere system due to Antarctic Circumpolar Current. |
| Publication Type | journal article |
| Record ID | 64005042 |