Regional variability of Antarctic sea ice extent

Bukatov, A. E.; Bukatov, A. A.; Babii, M. V.

doi:10.3103/s1068373916060042

Cited by 5 publications

(1 citation statement)

References 2 publications

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“…Most studies reveal that the general cooling is the main trend after 1950s 35,[42][43][44] , while the warming tendency can be captured in austral spring during the period 1979-2019 4 . Many studies have explored the mechanism of Antarctic temperature changes from many perspectives such as the Amundsen Sea low (ASL), Southern Annular Mode (SAM) 45,46 , La Niña events 44,47 , sea surface temperature 48 , sea ice 49 , westerlies, regional atmospheric circulation 50 and Antarctic ozone hole 51 . However, no quantification has yet been separated for the surface warming from altitudinal and latitudinal amplification over Antarctica.…”

Section: Surface Warming From Altitudinal and Latitudinal Amplificati...mentioning

confidence: 99%

Surface warming from altitudinal and latitudinal amplification over Antarctica since the International Geophysical Year

Xie

Qin

Wang

et al. 2023

Sci Rep

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Warming has been and is being enhanced at high latitudes or high elevations, whereas the quantitative estimation for warming from altitude and latitude effects has not been systematically investigated over Antarctic Ice Sheet, which covers more than 27 degrees of latitude and 4000 m altitude ranges. Based on the monthly surface air temperature data (1958–2020) from ERA5 reanalysis, this work aims to explore whether elevation-dependent warming (EDW) and latitude-dependent warming (LDW) exist. Results show that both EDW and LDW have the cooperative effect on Antarctic warming, and the magnitude of EDW is stronger than LDW. The negative EDW appears between 250 m and 2500 m except winter, and is strongest in autumn. The negative LDW occurs between 83 °S and 90 °S except in summer. Moreover, the surface downward long-wave radiation that related to the specific humidity, total cloud cover and cloud base height is a major contributor to the EDW over Antarctica. Further research on EDW and LDW should be anticipated to explore the future Antarctic amplification under different emission scenarios.

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