globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-10-05032.1
Scopus记录号: 2-s2.0-84857084560
论文题名:
East antarctic landfast sea ice distribution and variability, 2000-08
作者: Fraser A.D.; Massom R.A.; Michael K.J.; Galton-Fenzi B.K.; Lieser J.L.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期:4
起始页码: 1137
结束页码: 1156
语种: 英语
Scopus关键词: Antarctic coasts ; Antarctica ; Composite images ; Ice regime ; Indian ocean ; Interannual variability ; Land-fast ; Moderate resolution imaging spectroradiometer ; Satellite observations ; Sea ice distribution ; Sea ice extent ; Spatio-temporal resolution ; Climatology ; Oceanography ; Radiometers ; Satellite imagery ; Time series ; Sea ice ; annual variation ; climatology ; MODIS ; satellite data ; sea ice ; time series ; Antarctica ; East Antarctica ; Indian Ocean ; Pacific Ocean ; Pacific Ocean (West)
英文摘要: This study presents the rst continuous, high spatiotemporal resolution time series of landfast sea ice extent along the East Antarctic coast for the period March 2000-December 2008. The time series was derived from consecutive 20-day cloud-free Moderate Resolution Imaging Spectroradiometer (MODIS) composite images. Fast ice extent across the East Antarctic coast shows a statistically signicant (1.43% ±0.30% yr -1) increase. Regionally, there is a strong increase in the Indian Ocean sector (20°-90 °E, 4.07% ±0.42% yr -1), and a nonsignicant decrease in the western Pacic Ocean sector (90°-160°E, 20.40% ±0.37% yr -1). An apparent shift froma negative to a positive extent trend is observed in the IndianOcean sector from2004. This shift also coincides with a greater amount of interannual variability. No such shift in apparent trend is ob-served in the western Pacic Ocean sector, where fast ice extent is typically higher and variability lower than the Indian Ocean sector. The limit to the maximum fast ice areal extent imposed by the location of grounded icebergsmodulates the shape of themean annual fast ice extent cycle to give a broadmaximumand an abrupt, relatively transient minimum. Ten distinct fast ice regimes are identied, related to variations in bathymetry and coastal conguration. Fast ice is observed to form in bays, on the windward side of large grounded icebergs, between groups of smaller grounded icebergs, between promontories, and upwind of coastal features (e.g., glacier tongues). Analysis of the timing of fast ice maxima and minima is also presented and compared with overall sea ice maxima/minima timing. © 2012 American Meteorological Society.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52564
Appears in Collections:气候变化事实与影响

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作者单位: Antarctic Climate and Ecosystems Cooperative Research Centre, Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia; Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, TAS, Australia; Australian Antarctic Division, Kingston, TAS, Australia

Recommended Citation:
Fraser A.D.,Massom R.A.,Michael K.J.,et al. East antarctic landfast sea ice distribution and variability, 2000-08[J]. Journal of Climate,2012-01-01,25(4)
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