Affiliation:
1. State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China
2. Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China
Abstract
We conducted a comparison of sea ice concentration (SIC) in the Amundsen Sea using three satellite datasets: Hadley Centre’s sea ice and sea surface temperature (HadISST1), Operational Sea Surface Temperature and Ice Analysis (OSTIA), and Advanced Microwave Scanning Radiometer 2 (AMSR2). HadISST1 has the longest time period, while AMSR2 has the shortest. In terms of grid resolution, HadISST1 has the coarsest resolution, while AMSR2 has the finest. The sea ice areas (SIAs) observed in HadISST1, OSTIA, and AMSR2 are similar. We studied the decadal variations in SICs by dividing the study period into four temporal segments. We investigated the differences between HadISST1 and OSTIA for each temporal segment. HadISST1 exhibited a more pronounced positive trend compared to OSTIA between 2005 and 2010. Additionally, we compared the interannual and seasonal variations in SICs between HadISST1 and OSTIA. Lastly, it should be noted that the Amundsen Sea polynya area varies across all three datasets.
Funder
Impact and Response of Antarctic Seas to Climate Change (IRASCC) Project
Open Fund of the State Key Laboratory of Satellite Ocean Environment Dynamics
Subject
General Earth and Planetary Sciences
Reference56 articles.
1. Interpretation of recent Antarctic sea ice variability;Liu;Geophys. Res. Lett.,2004
2. Recent changes in Antarctic sea ice;Turner;Philos. Trans. R. Soc. A Math. Phys. Eng. Sci.,2015
3. Comparing and contrasting the behaviour of Arctic and Antarctic sea ice over the 35 year period 1979–2013;Simmonds;Ann. Glaciol.,2015
4. Record low Antarctic sea ice cover in February 2022;Turner;Geophys. Res. Lett.,2022
5. Antarctic sea ice variability and trends, 1979–2010;Parkinson;Cryosphere,2012