A Physical Mechanism for the Indian Summer Monsoon—Arctic Sea-Ice Teleconnection
Significant changes in the Arctic climate, particularly a rapid decline of September Arctic sea ice has occurred over the past few decades. Though the exact reason for such drastic changes is still unknown, studies suggest anthropogenic drivers, natural variability of the climate system, and a combi...
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Online Access: | https://doi.org/10.3390/atmos13040566 https://doaj.org/article/59598f9ef22e4c80a8a8c204922c11a9 |
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ftdoajarticles:oai:doaj.org/article:59598f9ef22e4c80a8a8c204922c11a9 2023-05-15T14:35:35+02:00 A Physical Mechanism for the Indian Summer Monsoon—Arctic Sea-Ice Teleconnection Suchithra Sundaram David M. Holland 2022-03-01T00:00:00Z https://doi.org/10.3390/atmos13040566 https://doaj.org/article/59598f9ef22e4c80a8a8c204922c11a9 EN eng MDPI AG https://www.mdpi.com/2073-4433/13/4/566 https://doaj.org/toc/2073-4433 doi:10.3390/atmos13040566 2073-4433 https://doaj.org/article/59598f9ef22e4c80a8a8c204922c11a9 Atmosphere, Vol 13, Iss 566, p 566 (2022) polar climate variability Arctic sea ice teleconnections Indian monsoon North Atlantic Oscillation Beaufort Sea High Meteorology. Climatology QC851-999 article 2022 ftdoajarticles https://doi.org/10.3390/atmos13040566 2022-12-31T03:18:36Z Significant changes in the Arctic climate, particularly a rapid decline of September Arctic sea ice has occurred over the past few decades. Though the exact reason for such drastic changes is still unknown, studies suggest anthropogenic drivers, natural variability of the climate system, and a combination of both as reasons. The present study focus on the influence of one of the natural variabilities of the climate system, the teleconnections associated with the Indian Summer Monsoon (ISM), and its relationship to September Arctic sea ice. Using 50 years (1951–2000) of National Center for Environmental Prediction (NCEP)/National Center for Atmospheric Research (NCAR) NCEP/NCAR reanalysis data, APHRODITE precipitation data, Gridded Monthly Sea Ice Extent and Concentration, 1850 Onward, V2, and HadISST sea-ice concentration data, it is shown that during many strong (weak) ISM years, the Arctic sea ice increased (decreased) predominantly over the Chukchi and Beaufort Seas. The ISM plays a significant role in causing a positive (negative) North Atlantic Oscillation (NAO) during strong (weak) ISM years through the monsoon-desert mechanism associated with monsoonal heating. Simultaneously, the NAO during a strong (weak) ISM causes weakening (strengthening) of the Beaufort Sea High (BSH). The strength of the BSH modulates the Arctic atmospheric circulation, advecting cold air and the direction of the transpolar drift stream, both leading to the generation of more (less) sea ice over the Chukchi-Beaufort Sea region during strong (weak) ISM years. The study illustrates a new atmospheric teleconnection between the tropics and the Arctic. Article in Journal/Newspaper Arctic Beaufort Sea Chukchi North Atlantic North Atlantic oscillation Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Indian Aphrodite ENVELOPE(-64.533,-64.533,-68.900,-68.900) Atmosphere 13 4 566 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
polar climate variability Arctic sea ice teleconnections Indian monsoon North Atlantic Oscillation Beaufort Sea High Meteorology. Climatology QC851-999 |
spellingShingle |
polar climate variability Arctic sea ice teleconnections Indian monsoon North Atlantic Oscillation Beaufort Sea High Meteorology. Climatology QC851-999 Suchithra Sundaram David M. Holland A Physical Mechanism for the Indian Summer Monsoon—Arctic Sea-Ice Teleconnection |
topic_facet |
polar climate variability Arctic sea ice teleconnections Indian monsoon North Atlantic Oscillation Beaufort Sea High Meteorology. Climatology QC851-999 |
description |
Significant changes in the Arctic climate, particularly a rapid decline of September Arctic sea ice has occurred over the past few decades. Though the exact reason for such drastic changes is still unknown, studies suggest anthropogenic drivers, natural variability of the climate system, and a combination of both as reasons. The present study focus on the influence of one of the natural variabilities of the climate system, the teleconnections associated with the Indian Summer Monsoon (ISM), and its relationship to September Arctic sea ice. Using 50 years (1951–2000) of National Center for Environmental Prediction (NCEP)/National Center for Atmospheric Research (NCAR) NCEP/NCAR reanalysis data, APHRODITE precipitation data, Gridded Monthly Sea Ice Extent and Concentration, 1850 Onward, V2, and HadISST sea-ice concentration data, it is shown that during many strong (weak) ISM years, the Arctic sea ice increased (decreased) predominantly over the Chukchi and Beaufort Seas. The ISM plays a significant role in causing a positive (negative) North Atlantic Oscillation (NAO) during strong (weak) ISM years through the monsoon-desert mechanism associated with monsoonal heating. Simultaneously, the NAO during a strong (weak) ISM causes weakening (strengthening) of the Beaufort Sea High (BSH). The strength of the BSH modulates the Arctic atmospheric circulation, advecting cold air and the direction of the transpolar drift stream, both leading to the generation of more (less) sea ice over the Chukchi-Beaufort Sea region during strong (weak) ISM years. The study illustrates a new atmospheric teleconnection between the tropics and the Arctic. |
format |
Article in Journal/Newspaper |
author |
Suchithra Sundaram David M. Holland |
author_facet |
Suchithra Sundaram David M. Holland |
author_sort |
Suchithra Sundaram |
title |
A Physical Mechanism for the Indian Summer Monsoon—Arctic Sea-Ice Teleconnection |
title_short |
A Physical Mechanism for the Indian Summer Monsoon—Arctic Sea-Ice Teleconnection |
title_full |
A Physical Mechanism for the Indian Summer Monsoon—Arctic Sea-Ice Teleconnection |
title_fullStr |
A Physical Mechanism for the Indian Summer Monsoon—Arctic Sea-Ice Teleconnection |
title_full_unstemmed |
A Physical Mechanism for the Indian Summer Monsoon—Arctic Sea-Ice Teleconnection |
title_sort |
physical mechanism for the indian summer monsoon—arctic sea-ice teleconnection |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/atmos13040566 https://doaj.org/article/59598f9ef22e4c80a8a8c204922c11a9 |
long_lat |
ENVELOPE(-64.533,-64.533,-68.900,-68.900) |
geographic |
Arctic Indian Aphrodite |
geographic_facet |
Arctic Indian Aphrodite |
genre |
Arctic Beaufort Sea Chukchi North Atlantic North Atlantic oscillation Sea ice |
genre_facet |
Arctic Beaufort Sea Chukchi North Atlantic North Atlantic oscillation Sea ice |
op_source |
Atmosphere, Vol 13, Iss 566, p 566 (2022) |
op_relation |
https://www.mdpi.com/2073-4433/13/4/566 https://doaj.org/toc/2073-4433 doi:10.3390/atmos13040566 2073-4433 https://doaj.org/article/59598f9ef22e4c80a8a8c204922c11a9 |
op_doi |
https://doi.org/10.3390/atmos13040566 |
container_title |
Atmosphere |
container_volume |
13 |
container_issue |
4 |
container_start_page |
566 |
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1766308380637396992 |