Northeast United States growing season moisture conditions: Associations with a North American mid‐tropospheric wave train
The Palmer Drought Severity Index is examined in the Northeast United States during the May–September growing seasons of 1950–2016, seeking to better understand the role of atmospheric circulation in moisture variability. Moist conditions for the Northeast are associated with the development of a mi...
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crwiley:10.1002/joc.5746 2024-06-02T08:02:34+00:00 Northeast United States growing season moisture conditions: Associations with a North American mid‐tropospheric wave train Suriano, Zachary J. Benjamin, Andrew E. Leathers, Daniel J. Schroeter, Derek Corradina, Victoria 2018 http://dx.doi.org/10.1002/joc.5746 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.5746 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.5746 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 38, issue 15, page 5542-5550 ISSN 0899-8418 1097-0088 journal-article 2018 crwiley https://doi.org/10.1002/joc.5746 2024-05-03T10:47:59Z The Palmer Drought Severity Index is examined in the Northeast United States during the May–September growing seasons of 1950–2016, seeking to better understand the role of atmospheric circulation in moisture variability. Moist conditions for the Northeast are associated with the development of a mid‐tropospheric wave train over the United States, with enhanced ridging over the west, a trough over the Ohio Valley, and ridging over the Atlantic Ocean east of Newfoundland that favours enhanced uplift, precipitation, and southeasterly flow at the surface in the Northeast. A scalar representation of the wave train, a Summer Atmospheric Drought Index (SADI), is developed and robustly validated as a strong indicator of the Northeast moisture conditions. The SADI mid‐tropospheric wave train is the second largest mode of 500 hPa height variability over the North American sector from 1950–2016, and has an increasing trend such that the ridge‐trough‐ridge pattern is more prevalent and/or has become more enhanced with time. The wave train pattern has a significant and positive relationship to the phases of the Arctic Oscillation (AO) and North Atlantic Oscillation (NAO). This indicates that when the AO and NAO indices are positive, the wave train pattern favours the ridge‐trough‐ridge configuration over North America, and can lead to moist conditions in the Northeast. The opposite pathway is also valid and can lead to dry conditions in the Northeast. This pathway provides a physical link between Northeast moisture conditions and global‐scale variability, improving the understanding of atmospheric influences on regional drought and excessive moisture conditions. Article in Journal/Newspaper Arctic Newfoundland North Atlantic North Atlantic oscillation Wiley Online Library Arctic International Journal of Climatology 38 15 5542 5550 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
The Palmer Drought Severity Index is examined in the Northeast United States during the May–September growing seasons of 1950–2016, seeking to better understand the role of atmospheric circulation in moisture variability. Moist conditions for the Northeast are associated with the development of a mid‐tropospheric wave train over the United States, with enhanced ridging over the west, a trough over the Ohio Valley, and ridging over the Atlantic Ocean east of Newfoundland that favours enhanced uplift, precipitation, and southeasterly flow at the surface in the Northeast. A scalar representation of the wave train, a Summer Atmospheric Drought Index (SADI), is developed and robustly validated as a strong indicator of the Northeast moisture conditions. The SADI mid‐tropospheric wave train is the second largest mode of 500 hPa height variability over the North American sector from 1950–2016, and has an increasing trend such that the ridge‐trough‐ridge pattern is more prevalent and/or has become more enhanced with time. The wave train pattern has a significant and positive relationship to the phases of the Arctic Oscillation (AO) and North Atlantic Oscillation (NAO). This indicates that when the AO and NAO indices are positive, the wave train pattern favours the ridge‐trough‐ridge configuration over North America, and can lead to moist conditions in the Northeast. The opposite pathway is also valid and can lead to dry conditions in the Northeast. This pathway provides a physical link between Northeast moisture conditions and global‐scale variability, improving the understanding of atmospheric influences on regional drought and excessive moisture conditions. |
format |
Article in Journal/Newspaper |
author |
Suriano, Zachary J. Benjamin, Andrew E. Leathers, Daniel J. Schroeter, Derek Corradina, Victoria |
spellingShingle |
Suriano, Zachary J. Benjamin, Andrew E. Leathers, Daniel J. Schroeter, Derek Corradina, Victoria Northeast United States growing season moisture conditions: Associations with a North American mid‐tropospheric wave train |
author_facet |
Suriano, Zachary J. Benjamin, Andrew E. Leathers, Daniel J. Schroeter, Derek Corradina, Victoria |
author_sort |
Suriano, Zachary J. |
title |
Northeast United States growing season moisture conditions: Associations with a North American mid‐tropospheric wave train |
title_short |
Northeast United States growing season moisture conditions: Associations with a North American mid‐tropospheric wave train |
title_full |
Northeast United States growing season moisture conditions: Associations with a North American mid‐tropospheric wave train |
title_fullStr |
Northeast United States growing season moisture conditions: Associations with a North American mid‐tropospheric wave train |
title_full_unstemmed |
Northeast United States growing season moisture conditions: Associations with a North American mid‐tropospheric wave train |
title_sort |
northeast united states growing season moisture conditions: associations with a north american mid‐tropospheric wave train |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1002/joc.5746 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.5746 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.5746 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Newfoundland North Atlantic North Atlantic oscillation |
genre_facet |
Arctic Newfoundland North Atlantic North Atlantic oscillation |
op_source |
International Journal of Climatology volume 38, issue 15, page 5542-5550 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.5746 |
container_title |
International Journal of Climatology |
container_volume |
38 |
container_issue |
15 |
container_start_page |
5542 |
op_container_end_page |
5550 |
_version_ |
1800747052712329216 |