Analysis of merged SMMR‐SSMI time series of Arctic and Antarctic sea ice parameters 1978–1995

Bjørgo, Einar; Johannessen, Ola M.; Miles, Martin W.

doi:10.1029/96gl04021

Cited by 166 publications

(110 citation statements)

References 15 publications

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“…Existing published series (Cavalieri et al 1997, Bjorgo et al 1997) consider data only to December 1996 and August 1995 respectively. Because of the potential sensitivity of the sea-ice cover to changing atmospheric, oceanic and climatic conditions, the construction and analysis of a more recent record is warranted.…”

Section: A New Updated Antarctic Sea-ice Recordmentioning

confidence: 99%

Anomalous peak in Antarctic sea‐ice area, Winter 1998, coincident with ENSO

Hanna

2001

Geophysical Research Letters

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Section: A New Updated Antarctic Sea-ice Recordmentioning

confidence: 99%

Anomalous peak in Antarctic sea‐ice area, Winter 1998, coincident with ENSO

Hanna

2001

Geophysical Research Letters

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“…은 전 지구적인 기후 및 환경 변화를 분석하는데 일차 적인 요소로 사용되고 있다 (Bjørgo et al, 1997;Cavalieri et al, 1999;Parkinson et al, 2001). 남극의 해빙은 대부분 유년 해빙(young ice) 및 일년생 해빙(first year ice)으로 구성되어 있고, 해빙 면적이 최대인 9-10월과 최소인 2 월의 면적 차이는 약 1.6×10 7 km 2 이다.…”

Section: 서 론 극지방의 해수표면이 결빙되어 형성된 해빙(Sea Ice)unclassified

Analysis of Annual Variability of Landfast Sea Ice near Jangbogo Antarctic Station Using InSAR Coherence Images

Han

Kim

Jin³

et al. 2015

Korean Journal of Remote Sensing

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: Landfast sea ice (LFI) in Terra Nova Bay, East Antarctica where the Jangbogo Antarctic Research Station is located, has significant influences on marine ecosystem and the sailing of an icebreaker. Therefore, it is essential to analyze the spatio-temporal variation of the LFI in Terra Nova Bay. In this study, we chose interferometric pairs with the temporal baseline from 1 to 9 days out of a total of 62 COSMO-SkyMed synthetic aperture radar (SAR) images over Terra Nova Bay obtained from December 2010 to January 2012, and then constructed the coherence image of each pair. The LFI showed coherence values higher than 0.3 even in the interferometric SAR (InSAR) pairs of up to 9-days of temporal baseline. This was because the LFI was fixed at coastline and thus showed low temporal phase decorrelation. Based on the characteristics of the coherence on LFI, We defined the areas of LFI that show spatially homogeneous coherence values higher than 0.5. Pack ice (PI) and open water showed low coherence values due to large temporal phase decorreation caused by current and wind. Distinguishing PI from open water in the coherence images was difficult due to their similarly low coherence values. PI was identified in SAR amplitude images by investigating cracks on the ice. The extents of the LFI and PI were estimated from the coherence and SAR amplitude images and their temporal variations were analyzed. The extent of the LFI increased from March to July (maximum extent of 170.7 km 2 ) and decreased from October. The extent of the PI increased from February to May and decreased from May to July when the LFI increases dramatically. The extent of the LFI and air temperature showed an inverse correlation with a time lag of about 2 months, i.e., the extent of the LFI decreases after 2 months of the increase in the air temperature. Meanwhile the correlation between wind speed and the extent of the LFI was very low. This represents that the extent of LFI in Terra Nova Bay are influenced more by the air temperature than wind speed.-5 01 -

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“…National Snow and Ice Data Center에서는 북극과 남극에 대해 NT 알고리즘으로 계산된 SSM/I, SSMIS의 일평균 해빙 면적비 자료를 제공하고 있다. 해빙 면적비는 일반 적으로 15% 이상일 때 신뢰할 수 있는 값으로 사용되며, 15% 이하의 해빙 면적비는 오차 범위에 포함되는 것으 로 간주된다 (Bjørgo et al, 1997;Vinnikov et al, 1999) Table 2에 서도 아라온호의 항해속도가 유지되는지 검토하였다. …”

Section: 서 론 북극해 및 남극해와 그 주변 해역은 겨울철에 해수표unclassified