No access 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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ftcdlib:oai:escholarship.org/ark:/13030/qt52g239wq 2023-05-15T17:30:39+02:00 No access extratropical impacts on Atlantic tropical cyclone activity Zhang, G Wang, Z Dunkerton, TJ Peng, MS Magnusdottir, G 1401 - 1418 2016-03-01 application/pdf https://escholarship.org/uc/item/52g239wq unknown eScholarship, University of California qt52g239wq https://escholarship.org/uc/item/52g239wq CC-BY CC-BY Journal of the Atmospheric Sciences, vol 73, iss 3 Extratropics Geographic location/entity Forecasting Atm/Ocean Structure/ Phenomena North Atlantic Ocean Seasonal forecasting Tropical cyclones Wave breaking Circulation/ Dynamics Meteorology & Atmospheric Sciences Atmospheric Sciences article 2016 ftcdlib 2021-04-16T07:11:37Z 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 Pacific |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Extratropics Geographic location/entity Forecasting Atm/Ocean Structure/ Phenomena North Atlantic Ocean Seasonal forecasting Tropical cyclones Wave breaking Circulation/ Dynamics Meteorology & Atmospheric Sciences Atmospheric Sciences |
spellingShingle |
Extratropics Geographic location/entity Forecasting Atm/Ocean Structure/ Phenomena North Atlantic Ocean Seasonal forecasting Tropical cyclones Wave breaking Circulation/ Dynamics Meteorology & Atmospheric Sciences Atmospheric Sciences Zhang, G Wang, Z Dunkerton, TJ Peng, MS Magnusdottir, G No access extratropical impacts on Atlantic tropical cyclone activity |
topic_facet |
Extratropics Geographic location/entity Forecasting Atm/Ocean Structure/ Phenomena North Atlantic Ocean Seasonal forecasting Tropical cyclones Wave breaking Circulation/ Dynamics Meteorology & Atmospheric Sciences 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, G Wang, Z Dunkerton, TJ Peng, MS Magnusdottir, G |
author_facet |
Zhang, G Wang, Z Dunkerton, TJ Peng, MS Magnusdottir, G |
author_sort |
Zhang, G |
title |
No access extratropical impacts on Atlantic tropical cyclone activity |
title_short |
No access extratropical impacts on Atlantic tropical cyclone activity |
title_full |
No access extratropical impacts on Atlantic tropical cyclone activity |
title_fullStr |
No access extratropical impacts on Atlantic tropical cyclone activity |
title_full_unstemmed |
No access extratropical impacts on Atlantic tropical cyclone activity |
title_sort |
no access extratropical impacts on atlantic tropical cyclone activity |
publisher |
eScholarship, University of California |
publishDate |
2016 |
url |
https://escholarship.org/uc/item/52g239wq |
op_coverage |
1401 - 1418 |
geographic |
Pacific |
geographic_facet |
Pacific |
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 |
op_rights |
CC-BY |
op_rightsnorm |
CC-BY |
_version_ |
1766127525427150848 |