West-warming East-cooling trend over Antarctica reversed since early 21 st century driven by large-scale circulation variation
Bibliographic Data
| ID | 15549016 |
|---|---|
| Authors | Meijiao Xin (Chinese Academy of Sciences), Kyle R Clem (0000-0002-1419-2758, Victoria University of Wellington), John Turner (0000-0002-6111-5122, British Antarctic Survey), Sharon Stammerjohn (0000-0002-1697-8244, Institute of Arctic and Alpine Research), Sharon E Stammerjohn, Jiang Zhu (0000-0002-7935-5263, Chinese Academy of Sciences), Wenju Cai (0000-0001-6520-0829, CSIRO Oceans and Atmosphere), Xichen Li (0000-0001-6325-6626, Chinese Academy of Sciences, corresponding author) |
| Year | 2023 |
| Volume | 18 |
| Issue | 6 |
| Pages | 064034-064034 |
| Publication date | 2023-05-25 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Environmental Research Letters (JOURNAL) |
| Journal identifiers | ISSN: 1748-9326 • E-ISSN: 1748-9326 |
| Publisher | IOP Publishing (PUBLISHER • GB) |
| DOI | 10.1088/1748-9326/acd8d4 |
| OpenAlex | W4378190836 |
| Language | EN |
| Citations received | 1 |
| References cited | 76 |
Antarctic climate changes prior to 2000 were characterized by a strong zonally asymmetric pattern. Over 90% of the land ice mass loss occurred around a limited area in West Antarctica, accompanied by a rapid surface warming rate about three times the global mean. In contrast, surface warming and glacier mass loss around East Antarctica are not significant, until the decades since 2000 when several individual stations show that the temperature trends might have reversed. The asymmetric climate changes between East- and West-Antarctica are largely attributable to the inter-decadal variabilities over the Pacific and Atlantic Oceans through tropical–polar teleconnections, leaving open the question of whether the post-2000 phase shift of the lower-latitude decadal variability causes a flip of the asymmetric Antarctic changes. Here, by synthesizing 26 in-situ observations and 6 reanalysis datasets using a statistical method and integrating the results with a series of climate model experiments, we find that the West-warming, East-cooling trend over Antarctica has systematically reversed in austral spring since the early 21 st century, largely due to the atmospheric circulation anomaly over the Antarctic Peninsula–Weddell Sea region, which is associated to the teleconnection with Pacific and atmospheric internal variability. This reversal of the temperature seesaw suggests that substantial decadal-scale fluctuations of the Antarctic climate system exist, including for sea-ice and land-ice systems, superimposed on and modifying longer term changes
Abrupt climate change · Anomaly (physics · Atmospheric Circulation · Climate change · Climatology · Cryosphere · Effects of global warming · Geography · Glacier · Glacier mass balance · Global warming · Peninsula · Physical geography · Sea ice · Sea surface temperature · Teleconnection · Climate variability and models · Cryospheric studies and observations · Environmental Science · Geology and Paleoclimatology Research · Geology · Oceanography
NCEP–DOE Amip-II Reanalysis (R-2)
The ERA‐Interim reanalysis
Contribution of Antarctica to past and future sea-level rise
Estimates of the Regression Coefficient Based on Kendall's Tau
Global analyses of sea surface temperature, sea ice, and night marine air temperature since the late nineteenth century
The NCEP Climate Forecast System Reanalysis
The JRA-55 Reanalysis
The Modern-Era Retrospective Analysis for Research and Applications, Version 2 (Merra-2)
The ERA5 global reanalysis
Seasonal sea-ice variability and its trend in the Weddell Sea sector of West Antarctica
The land ice contribution to sea level during the satellite era
| Unique citing works | 1 |
|---|---|
| Citations per year | 1 |
| Citation span | 2025 - 2025 (1) |
| Citation velocity | recent |
| Highly cited | No |
| Citation types | Neutral: 1 |