@article {Parkinson:1 January 2002:0260-3055:435,
	author = "Parkinson, Claire L.",
	title = "Trends in the length of the Southern Ocean sea-ice season, 1979-99",
	journal = "Annals of Glaciology",
	volume = "34",
	year = "1 January 2002",
	abstract = "Satellite passive-microwave data have been used to calculate and map the length of the sea-ice season throughout the Southern Ocean for each year 1979-99. Mapping the slopes of the lines of linear least-squares fit through the 21 years of resulting season-length data reveals a detailed pattern of trends in the length of the sea-ice season around the Antarctic continent. Specifically, most of the Ross Sea ice cover has, on average over the 21 years, undergone a lengthening of the sea-ice season, whereas most of the Amundsen Sea ice cover and almost the entire Bellingshausen Sea ice cover have undergone a shortening of the sea-ice season. Results for the Weddell Sea are mixed, with the northwestern portion of the sea having experienced a shortening of the sea-ice season but a substantial area in the south-central portion of the sea having experienced a lengthening of the ice season. Overall, the area of the Southern Ocean experiencing a lengthening of the sea-ice season by at least 1 day per year over the period 1979-99 is 5.6 &#215; 10<SUP>6</SUP> km<SUP>2</SUP>, whereas the area experiencing a shortening of the sea-ice season by at least 1 day per year is 46% less than that, at 3.0 &#215; 106 km<SUP>2</SUP>.",
	pages = "435-440(6)",
	url = "http://www.ingentaconnect.com/content/igsoc/agl/2002/00000034/00000001/art00065"
	doi = "doi:10.3189/172756402781817482"
}