Warm winter, thin ice?
Winter 2016/2017 saw record warmth over the Arctic Ocean, leading to the least amount of freezing degree days north of 70° N since at least 1979. The impact of this warmth was evaluated using model simulations from the Los Alamos sea ice model (CICE) and CryoSat-2 thickness estimates from three...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2018-05-01
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| Series: | The Cryosphere |
| Online Access: | https://www.the-cryosphere.net/12/1791/2018/tc-12-1791-2018.pdf |
| _version_ | 1818187136218693632 |
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| author | J. C. Stroeve J. C. Stroeve D. Schroder M. Tsamados D. Feltham |
| author_facet | J. C. Stroeve J. C. Stroeve D. Schroder M. Tsamados D. Feltham |
| author_sort | J. C. Stroeve |
| collection | DOAJ |
| description | Winter 2016/2017 saw record warmth over the Arctic Ocean, leading to the
least amount of freezing degree days north of 70° N since at least 1979.
The impact of this warmth was evaluated using model simulations from the Los
Alamos sea ice model (CICE) and CryoSat-2 thickness estimates from three
different data providers. While CICE simulations show a broad region of
anomalously thin ice in April 2017 relative to the 2011–2017 mean, analysis
of three CryoSat-2 products show more limited regions with thin ice and do
not always agree with each other, both in magnitude and direction of
thickness anomalies. CICE is further used to diagnose feedback processes
driving the observed anomalies, showing 11–13 cm reduced thermodynamic ice
growth over the Arctic domain used in this study compared to the 2011–2017
mean, and dynamical contributions of +1 to +4 cm. Finally, CICE model
simulations from 1985 to 2017 indicate the negative feedback relationship
between ice growth and winter air temperatures may be starting to weaken,
showing decreased winter ice growth since 2012, as winter air temperatures
have increased and the freeze-up has been further delayed. |
| first_indexed | 2024-12-11T23:06:14Z |
| format | Article |
| id | doaj.art-bb2d3d43ba304534876b726fc38b2ac9 |
| institution | Directory Open Access Journal |
| issn | 1994-0416 1994-0424 |
| language | English |
| last_indexed | 2024-12-11T23:06:14Z |
| publishDate | 2018-05-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | The Cryosphere |
| spelling | doaj.art-bb2d3d43ba304534876b726fc38b2ac92022-12-22T00:46:54ZengCopernicus PublicationsThe Cryosphere1994-04161994-04242018-05-01121791180910.5194/tc-12-1791-2018Warm winter, thin ice?J. C. Stroeve0J. C. Stroeve1D. Schroder2M. Tsamados3D. Feltham4Centre for Polar Observation and Modelling, Earth Sciences, University College London, London, UKNational Snow and Ice Data Center, University of Colorado, Boulder, CO, USACentre for Polar Observation and Modelling, Department of Meteorology, University of Reading, Reading, UKCentre for Polar Observation and Modelling, Earth Sciences, University College London, London, UKCentre for Polar Observation and Modelling, Department of Meteorology, University of Reading, Reading, UKWinter 2016/2017 saw record warmth over the Arctic Ocean, leading to the least amount of freezing degree days north of 70° N since at least 1979. The impact of this warmth was evaluated using model simulations from the Los Alamos sea ice model (CICE) and CryoSat-2 thickness estimates from three different data providers. While CICE simulations show a broad region of anomalously thin ice in April 2017 relative to the 2011–2017 mean, analysis of three CryoSat-2 products show more limited regions with thin ice and do not always agree with each other, both in magnitude and direction of thickness anomalies. CICE is further used to diagnose feedback processes driving the observed anomalies, showing 11–13 cm reduced thermodynamic ice growth over the Arctic domain used in this study compared to the 2011–2017 mean, and dynamical contributions of +1 to +4 cm. Finally, CICE model simulations from 1985 to 2017 indicate the negative feedback relationship between ice growth and winter air temperatures may be starting to weaken, showing decreased winter ice growth since 2012, as winter air temperatures have increased and the freeze-up has been further delayed.https://www.the-cryosphere.net/12/1791/2018/tc-12-1791-2018.pdf |
| spellingShingle | J. C. Stroeve J. C. Stroeve D. Schroder M. Tsamados D. Feltham Warm winter, thin ice? The Cryosphere |
| title | Warm winter, thin ice? |
| title_full | Warm winter, thin ice? |
| title_fullStr | Warm winter, thin ice? |
| title_full_unstemmed | Warm winter, thin ice? |
| title_short | Warm winter, thin ice? |
| title_sort | warm winter thin ice |
| url | https://www.the-cryosphere.net/12/1791/2018/tc-12-1791-2018.pdf |
| work_keys_str_mv | AT jcstroeve warmwinterthinice AT jcstroeve warmwinterthinice AT dschroder warmwinterthinice AT mtsamados warmwinterthinice AT dfeltham warmwinterthinice |