globalchange  > 全球变化的国际研究计划
DOI: 10.3390/rs11141672
WOS记录号: WOS:000480527800042
论文题名:
Arctic Ocean Sea Level Record from the Complete Radar Altimetry Era: 1991-2018
作者: Rose, Stine Kildegaard1,3; Andersen, Ole Baltazar1; Passaro, Marcello2; Ludwigsen, Carsten Ankjaer1; Schwatke, Christian2
通讯作者: Rose, Stine Kildegaard
刊名: REMOTE SENSING
ISSN: 2072-4292
出版年: 2019
卷: 11, 期:14
语种: 英语
英文关键词: radar altimetry ; satellite altimetry ; arctic ocean ; remote sensing of the oceans ; sea level rise ; polar area
WOS关键词: SATELLITE ALTIMETRY ; ICE FREEBOARD ; GREENLAND ; VARIABILITY ; GRACE ; WIND ; ESA ; IMPROVEMENT ; THICKNESS ; RETRACKER
WOS学科分类: Remote Sensing
WOS研究方向: Remote Sensing
英文摘要:

In recent years, there has been a large focus on the Arctic due to the rapid changes of the region. Arctic sea level determination is challenging due to the seasonal to permanent sea-ice cover, lack of regional coverage of satellites, satellite instruments ability to measure ice, insufficient geophysical models, residual orbit errors, challenging retracking of satellite altimeter data. We present the European Space Agency (ESA) Climate Change Initiative (CCI) Technical University of Denmark (DTU)/Technischen Universitat Munchen (TUM) sea level anomaly (SLA) record based on radar satellite altimetry data in the Arctic Ocean from the European Remote Sensing satellite number 1 (ERS-1) (1991) to CryoSat-2 (2018). We use updated geophysical corrections and a combination of altimeter data: Reprocessing of Altimeter Product for ERS (REAPER) (ERS-1), ALES+ retracker (ERS-2, Envisat), combination of Radar Altimetry Database System (RADS) and DTUs in-house retracker LARS (CryoSat-2). Furthermore, this study focuses on the transition between conventional and Synthetic Aperture Radar (SAR) altimeter data to make a smooth time series regarding the measurement method. We find a sea level rise of 1.54 mm/year from September 1991 to September 2018 with a 95% confidence interval from 1.16 to 1.81 mm/year. ERS-1 data is troublesome and when ignoring this satellite the SLA trend becomes 2.22 mm/year with a 95% confidence interval within 1.67-2.54 mm/year. Evaluating the SLA trends in 5 year intervals show a clear steepening of the SLA trend around 2004. The sea level anomaly record is validated against tide gauges and show good results. Additionally, the time series is split and evaluated in space and time.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/143007
Appears in Collections:全球变化的国际研究计划

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作者单位: 1.Tech Univ Denmark, Natl Space Inst DTU Space, DK-2800 Lyngby, Denmark
2.TUM, DGFI, D-80333 Munich, Germany
3.DTU Space, Natl Space Inst, Dept Geodesy, Elektrovej Bldg 228, DK-2800 Lyngby, Denmark

Recommended Citation:
Rose, Stine Kildegaard,Andersen, Ole Baltazar,Passaro, Marcello,et al. Arctic Ocean Sea Level Record from the Complete Radar Altimetry Era: 1991-2018[J]. REMOTE SENSING,2019-01-01,11(14)
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