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Investigating the Relationship between Sea Surface Chlorophyll and Major Features of the South China Sea with Satellite Information
Published on: June 13, 2020
Variability in Antarctic sea ice from 1998 to 2017
Zhankai Wu1, Xingdong Wang2,3
1College of Information Science and Engineering, Henan University of Technology, Zhengzhou, 450001, China.
Antarctic sea ice showed an overall increasing trend from 1998 to 2017, with total sea ice area (SIA) and multiyear ice area expanding. However, regional differences were observed between West and East Antarctica.
Area of Science:
- * Polar Science
- * Climate Science
- * Earth System Science
Background:
- * Understanding Antarctic sea ice dynamics is crucial for global climate monitoring.
- * Previous research indicates complex regional variations in Antarctic sea ice extent.
- * Long-term data analysis is essential for identifying trends in polar ice cover.
Purpose of the Study:
- * To analyze temporal and spatial trends of Antarctic sea ice parameters from 1998 to 2017.
- * To investigate changes in total sea ice area (SIA), first-year ice, and multiyear ice.
- * To differentiate sea ice trends between West Antarctica (WA) and East Antarctica (EA).
Main Methods:
- * Utilized daily sea ice concentration data from the NASA Team algorithm (1998-2017).
- * Analyzed temporal changes in SIA, first-year ice, and multiyear ice over 20 years.
- * Spatially divided the Antarctic into WA and EA to assess regional sea ice concentration change rates.
Main Results:
- * Overall Antarctic SIA increased by 0.0087 × 10^6 km^2/year (2.08% per decade).
- * Multiyear ice area showed a significant increase (0.0141 × 10^6 km^2/year).
- * First-year ice area decreased (-0.0058 × 10^6 km^2/year).
- * WA exhibited decreasing trends in total SIA and multiyear ice.
- * EA showed increasing trends in total SIA and multiyear ice.
Conclusions:
- * Antarctic sea ice demonstrates an overall increasing trend, driven by expansion in East Antarctica.
- * Significant regional disparities exist, with West Antarctica experiencing sea ice decline.
- * The contrasting trends highlight the complexity of Antarctic sea ice response to climate variability.
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