The Role of Atmospheric Blocking in Regulating Arctic Warming
Abstract Using ERA5 reanalysis we find positive trends in poleward transport of moisture and heat during 1979–2018 over the winter Barents Sea sector and summer East Siberian Sea sector. The increase in blocking occurrence (blocking days) can explain these trends. Blocking occurrence over the Barent...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-06-01
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| Series: | Geophysical Research Letters |
| Online Access: | https://doi.org/10.1029/2022GL097899 |
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| _version_ | 1832591256630329344 |
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| author | Cheng You Michael Tjernström Abhay Devasthale Daniel Steinfeld |
| author_facet | Cheng You Michael Tjernström Abhay Devasthale Daniel Steinfeld |
| author_sort | Cheng You |
| collection | DOAJ |
| description | Abstract Using ERA5 reanalysis we find positive trends in poleward transport of moisture and heat during 1979–2018 over the winter Barents Sea sector and summer East Siberian Sea sector. The increase in blocking occurrence (blocking days) can explain these trends. Blocking occurrence over the Barents Sea sector significantly increased in the last 40 winters, inducing increasingly stronger poleward transport of moisture and heat. The high linear correlation between poleward energy transports and temperature over the Barents Sea sector suggests that poleward energy transports dominate the regional warming trend there. Meanwhile, in summer, more frequently occurring blocking over the Beaufort Sea sector causes a positive trend of poleward moist and heat transport over the East Siberian Sea sector. The high linear correlation between the blocking occurrence and temperature suggests that the increasing shortwave radiation and subsidence within the more frequently occurring blocking contribute to the regional warming trend. |
| format | Article |
| id | doaj-art-b6afb2eb3d4d40888a23106f9fcbe687 |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2022-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-b6afb2eb3d4d40888a23106f9fcbe6872025-01-22T14:38:16ZengWileyGeophysical Research Letters0094-82761944-80072022-06-014912n/an/a10.1029/2022GL097899The Role of Atmospheric Blocking in Regulating Arctic WarmingCheng You0Michael Tjernström1Abhay Devasthale2Daniel Steinfeld3Department of Meteorology & Bolin Centre for Climate Research Stockholm University Stockholm SwedenDepartment of Meteorology & Bolin Centre for Climate Research Stockholm University Stockholm SwedenRemote Sensing Unit Research and Development Department Swedish Meteorological and Hydrological Institute Norrköping SwedenInstitute of Geography and Oeschger Centre for Climate Change Research University of Bern Bern SwitzerlandAbstract Using ERA5 reanalysis we find positive trends in poleward transport of moisture and heat during 1979–2018 over the winter Barents Sea sector and summer East Siberian Sea sector. The increase in blocking occurrence (blocking days) can explain these trends. Blocking occurrence over the Barents Sea sector significantly increased in the last 40 winters, inducing increasingly stronger poleward transport of moisture and heat. The high linear correlation between poleward energy transports and temperature over the Barents Sea sector suggests that poleward energy transports dominate the regional warming trend there. Meanwhile, in summer, more frequently occurring blocking over the Beaufort Sea sector causes a positive trend of poleward moist and heat transport over the East Siberian Sea sector. The high linear correlation between the blocking occurrence and temperature suggests that the increasing shortwave radiation and subsidence within the more frequently occurring blocking contribute to the regional warming trend.https://doi.org/10.1029/2022GL097899 |
| spellingShingle | Cheng You Michael Tjernström Abhay Devasthale Daniel Steinfeld The Role of Atmospheric Blocking in Regulating Arctic Warming Geophysical Research Letters |
| title | The Role of Atmospheric Blocking in Regulating Arctic Warming |
| title_full | The Role of Atmospheric Blocking in Regulating Arctic Warming |
| title_fullStr | The Role of Atmospheric Blocking in Regulating Arctic Warming |
| title_full_unstemmed | The Role of Atmospheric Blocking in Regulating Arctic Warming |
| title_short | The Role of Atmospheric Blocking in Regulating Arctic Warming |
| title_sort | role of atmospheric blocking in regulating arctic warming |
| url | https://doi.org/10.1029/2022GL097899 |
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