Extratropical Impacts on Atlantic Tropical Cyclone Activity
With warm sea surface temperature (SST) anomalies in the tropical Atlantic and cold SST anomalies in the east Pacific, the unusually quiet hurricane season in 2013 was a surprise to the hurricane community. The authors' analyses suggest that the substantially suppressed Atlantic tropical cyclon...
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Online Access: | https://escholarship.org/uc/item/52g239wq https://escholarship.org/content/qt52g239wq/qt52g239wq.pdf https://doi.org/10.1175/jas-d-15-0154.1 |
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ftcdlib:oai:escholarship.org:ark:/13030/qt52g239wq 2024-09-15T18:22:30+00:00 Extratropical Impacts on Atlantic Tropical Cyclone Activity Zhang, Gan Wang, Zhuo Dunkerton, Timothy J Peng, Melinda S Magnusdottir, Gudrun 1401 - 1418 2016-03-01 application/pdf https://escholarship.org/uc/item/52g239wq https://escholarship.org/content/qt52g239wq/qt52g239wq.pdf https://doi.org/10.1175/jas-d-15-0154.1 unknown eScholarship, University of California qt52g239wq https://escholarship.org/uc/item/52g239wq https://escholarship.org/content/qt52g239wq/qt52g239wq.pdf doi:10.1175/jas-d-15-0154.1 CC-BY Journal of the Atmospheric Sciences, vol 73, iss 3 Climate Action Extratropics Geographic location/entity Forecasting Atm/Ocean Structure/ Phenomena North Atlantic Ocean Seasonal forecasting Tropical cyclones Wave breaking Circulation/ Dynamics Atmospheric Sciences Meteorology & Atmospheric Sciences article 2016 ftcdlib https://doi.org/10.1175/jas-d-15-0154.1 2024-06-28T06:28:20Z With warm sea surface temperature (SST) anomalies in the tropical Atlantic and cold SST anomalies in the east Pacific, the unusually quiet hurricane season in 2013 was a surprise to the hurricane community. The authors' analyses suggest that the substantially suppressed Atlantic tropical cyclone (TC) activity in August 2013 can be attributed to frequent breaking of midlatitude Rossby waves, which led to the equatorward intrusion of cold and dry extratropical air. The resultant mid- to upper-tropospheric dryness and strong vertical wind shear hindered TC development. Using the empirical orthogonal function analysis, the active Rossby wave breaking in August 2013 was found to be associated with a recurrent mode of the midlatitude jet stream over the North Atlantic, which represents the variability of the intensity and zonal extent of the jet. This mode is significantly correlated with Atlantic hurricane frequency. The correlation coefficient is comparable to the correlation of Atlantic hurricane frequency with the main development region (MDR) relative SST and higher than that with the Niño-3.4 index. This study highlights the extratropical impacts on Atlantic TC activity, which may have important implications for the seasonal predictability of Atlantic TCs. Article in Journal/Newspaper North Atlantic University of California: eScholarship Journal of the Atmospheric Sciences 73 3 1401 1418 |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Climate Action Extratropics Geographic location/entity Forecasting Atm/Ocean Structure/ Phenomena North Atlantic Ocean Seasonal forecasting Tropical cyclones Wave breaking Circulation/ Dynamics Atmospheric Sciences Meteorology & Atmospheric Sciences |
spellingShingle |
Climate Action Extratropics Geographic location/entity Forecasting Atm/Ocean Structure/ Phenomena North Atlantic Ocean Seasonal forecasting Tropical cyclones Wave breaking Circulation/ Dynamics Atmospheric Sciences Meteorology & Atmospheric Sciences Zhang, Gan Wang, Zhuo Dunkerton, Timothy J Peng, Melinda S Magnusdottir, Gudrun Extratropical Impacts on Atlantic Tropical Cyclone Activity |
topic_facet |
Climate Action Extratropics Geographic location/entity Forecasting Atm/Ocean Structure/ Phenomena North Atlantic Ocean Seasonal forecasting Tropical cyclones Wave breaking Circulation/ Dynamics Atmospheric Sciences Meteorology & Atmospheric Sciences |
description |
With warm sea surface temperature (SST) anomalies in the tropical Atlantic and cold SST anomalies in the east Pacific, the unusually quiet hurricane season in 2013 was a surprise to the hurricane community. The authors' analyses suggest that the substantially suppressed Atlantic tropical cyclone (TC) activity in August 2013 can be attributed to frequent breaking of midlatitude Rossby waves, which led to the equatorward intrusion of cold and dry extratropical air. The resultant mid- to upper-tropospheric dryness and strong vertical wind shear hindered TC development. Using the empirical orthogonal function analysis, the active Rossby wave breaking in August 2013 was found to be associated with a recurrent mode of the midlatitude jet stream over the North Atlantic, which represents the variability of the intensity and zonal extent of the jet. This mode is significantly correlated with Atlantic hurricane frequency. The correlation coefficient is comparable to the correlation of Atlantic hurricane frequency with the main development region (MDR) relative SST and higher than that with the Niño-3.4 index. This study highlights the extratropical impacts on Atlantic TC activity, which may have important implications for the seasonal predictability of Atlantic TCs. |
format |
Article in Journal/Newspaper |
author |
Zhang, Gan Wang, Zhuo Dunkerton, Timothy J Peng, Melinda S Magnusdottir, Gudrun |
author_facet |
Zhang, Gan Wang, Zhuo Dunkerton, Timothy J Peng, Melinda S Magnusdottir, Gudrun |
author_sort |
Zhang, Gan |
title |
Extratropical Impacts on Atlantic Tropical Cyclone Activity |
title_short |
Extratropical Impacts on Atlantic Tropical Cyclone Activity |
title_full |
Extratropical Impacts on Atlantic Tropical Cyclone Activity |
title_fullStr |
Extratropical Impacts on Atlantic Tropical Cyclone Activity |
title_full_unstemmed |
Extratropical Impacts on Atlantic Tropical Cyclone Activity |
title_sort |
extratropical impacts on atlantic tropical cyclone activity |
publisher |
eScholarship, University of California |
publishDate |
2016 |
url |
https://escholarship.org/uc/item/52g239wq https://escholarship.org/content/qt52g239wq/qt52g239wq.pdf https://doi.org/10.1175/jas-d-15-0154.1 |
op_coverage |
1401 - 1418 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Journal of the Atmospheric Sciences, vol 73, iss 3 |
op_relation |
qt52g239wq https://escholarship.org/uc/item/52g239wq https://escholarship.org/content/qt52g239wq/qt52g239wq.pdf doi:10.1175/jas-d-15-0154.1 |
op_rights |
CC-BY |
op_doi |
https://doi.org/10.1175/jas-d-15-0154.1 |
container_title |
Journal of the Atmospheric Sciences |
container_volume |
73 |
container_issue |
3 |
container_start_page |
1401 |
op_container_end_page |
1418 |
_version_ |
1810462366310072320 |