The influence of ocean heat transport in the Barents Sea on the regional sea ice and the atmospheric static stability
The influence of the oceanic heat inflow into the Barents Sea on the sea ice concentration and atmospheric characteristics, including the atmospheric static stability during winter months, is investigated on the basis of the results of ensemble simulations with the regional climate model HIRHAM/NAOS...
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| Format: | Article |
| Language: | Russian |
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Nauka
2019-12-01
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| Series: | Лëд и снег |
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| Online Access: | https://ice-snow.igras.ru/jour/article/view/680 |
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| author | M. G. Akperov V. A. Semenov I. I. Mokhov M. R. Parfenova M. A. Dembitskaya D. D. Bokuchava A. Rinke W. Dorn |
| author_facet | M. G. Akperov V. A. Semenov I. I. Mokhov M. R. Parfenova M. A. Dembitskaya D. D. Bokuchava A. Rinke W. Dorn |
| author_sort | M. G. Akperov |
| collection | DOAJ |
| description | The influence of the oceanic heat inflow into the Barents Sea on the sea ice concentration and atmospheric characteristics, including the atmospheric static stability during winter months, is investigated on the basis of the results of ensemble simulations with the regional climate model HIRHAM/NAOSIM for the Arctic. The static stability of the atmosphere is the important indicator of the spatial and temporal variability of polar mesocyclones in the Arctic region. The results of the HIRHAM/NAOSIM regional climate model ensemble simulations (RCM) for the period from 1979 to 2016 were used for the analysis. The initial and lateral boundary conditions for RCM in the atmosphere were set in accordance with the ERA-Interim reanalysis data. An analysis of 10 ensemble simulations with identical boundary conditions and the same radiation forcing for the Arctic was performed. Various realizations of ensemble simulations with RCM were obtained by changing the initial conditions for integrating the oceanic block of the model. Different realizations of ensemble simulations with RCM are obtained by changing the initial conditions of the model oceanic block integration. The composites method was used for the analysis, i.e. the difference between the mean values for years with the maximum and minimum inflow of oceanic water into the Barents Sea. The statistical significance of the results (at a significance level of p < 0.05) was estimated using Student's t-test. In general, the regional climate model reproduces the seasonal changes in the inflow of the oceanic water and heat into the Barents Sea reasonably well. There is a strong relationship between the changes in the oceanic water and ocean heat inflow, sea ice concentration, and surface air temperature in the Barents Sea. Herewith, the increase in the oceanic water inflow into the Barents Sea in winter leads to a decrease in static stability, which contributes to changes in regional cyclonic activity. The decrease of the static stability is most pronounced in the southern part of the Barents Sea and also to the west of Svalbard. |
| format | Article |
| id | doaj-art-6809401fd27a498b954cce0f7e7cfe4a |
| institution | DOAJ |
| issn | 2076-6734 2412-3765 |
| language | Russian |
| publishDate | 2019-12-01 |
| publisher | Nauka |
| record_format | Article |
| series | Лëд и снег |
| spelling | doaj-art-6809401fd27a498b954cce0f7e7cfe4a2025-08-20T03:00:45ZrusNaukaЛëд и снег2076-67342412-37652019-12-0159452953810.15356/2076-6734-2019-4-417526The influence of ocean heat transport in the Barents Sea on the regional sea ice and the atmospheric static stabilityM. G. Akperov0V. A. Semenov1I. I. Mokhov2M. R. Parfenova3M. A. Dembitskaya4D. D. Bokuchava5A. Rinke6W. Dorn7A.M. Obukhov Institute of Atmosphere Physics, Russian Academy of SciencesA.M. Obukhov Institute of Atmosphere Physics, Russian Academy of Sciences; Institute of Geography, Russian Academy of SciencesA.M. Obukhov Institute of Atmosphere Physics, Russian Academy of Sciences; Lomonosov Moscow State UniversityA.M. Obukhov Institute of Atmosphere Physics, Russian Academy of SciencesA.M. Obukhov Institute of Atmosphere Physics, Russian Academy of SciencesA.M. Obukhov Institute of Atmosphere Physics, Russian Academy of Sciences; Institute of Geography, Russian Academy of SciencesAlfred Wegener Institute for Polar and Marine ResearchAlfred Wegener Institute for Polar and Marine ResearchThe influence of the oceanic heat inflow into the Barents Sea on the sea ice concentration and atmospheric characteristics, including the atmospheric static stability during winter months, is investigated on the basis of the results of ensemble simulations with the regional climate model HIRHAM/NAOSIM for the Arctic. The static stability of the atmosphere is the important indicator of the spatial and temporal variability of polar mesocyclones in the Arctic region. The results of the HIRHAM/NAOSIM regional climate model ensemble simulations (RCM) for the period from 1979 to 2016 were used for the analysis. The initial and lateral boundary conditions for RCM in the atmosphere were set in accordance with the ERA-Interim reanalysis data. An analysis of 10 ensemble simulations with identical boundary conditions and the same radiation forcing for the Arctic was performed. Various realizations of ensemble simulations with RCM were obtained by changing the initial conditions for integrating the oceanic block of the model. Different realizations of ensemble simulations with RCM are obtained by changing the initial conditions of the model oceanic block integration. The composites method was used for the analysis, i.e. the difference between the mean values for years with the maximum and minimum inflow of oceanic water into the Barents Sea. The statistical significance of the results (at a significance level of p < 0.05) was estimated using Student's t-test. In general, the regional climate model reproduces the seasonal changes in the inflow of the oceanic water and heat into the Barents Sea reasonably well. There is a strong relationship between the changes in the oceanic water and ocean heat inflow, sea ice concentration, and surface air temperature in the Barents Sea. Herewith, the increase in the oceanic water inflow into the Barents Sea in winter leads to a decrease in static stability, which contributes to changes in regional cyclonic activity. The decrease of the static stability is most pronounced in the southern part of the Barents Sea and also to the west of Svalbard.https://ice-snow.igras.ru/jour/article/view/680the atmospherethe barents seaclimateclimate modelcyclonesocean water inflowpolar lowssea ice |
| spellingShingle | M. G. Akperov V. A. Semenov I. I. Mokhov M. R. Parfenova M. A. Dembitskaya D. D. Bokuchava A. Rinke W. Dorn The influence of ocean heat transport in the Barents Sea on the regional sea ice and the atmospheric static stability Лëд и снег the atmosphere the barents sea climate climate model cyclones ocean water inflow polar lows sea ice |
| title | The influence of ocean heat transport in the Barents Sea on the regional sea ice and the atmospheric static stability |
| title_full | The influence of ocean heat transport in the Barents Sea on the regional sea ice and the atmospheric static stability |
| title_fullStr | The influence of ocean heat transport in the Barents Sea on the regional sea ice and the atmospheric static stability |
| title_full_unstemmed | The influence of ocean heat transport in the Barents Sea on the regional sea ice and the atmospheric static stability |
| title_short | The influence of ocean heat transport in the Barents Sea on the regional sea ice and the atmospheric static stability |
| title_sort | influence of ocean heat transport in the barents sea on the regional sea ice and the atmospheric static stability |
| topic | the atmosphere the barents sea climate climate model cyclones ocean water inflow polar lows sea ice |
| url | https://ice-snow.igras.ru/jour/article/view/680 |
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