The Roles of Climate Change and Climate Variability in the 2017 Atlantic Hurricane Season
The 2017 hurricane season was extremely active with six major hurricanes, the third most on record. The sea-surface temperatures (SSTs) over the eastern Main Development Region (EMDR), where many tropical cyclones (TCs) developed during active months of August/September, were approximately 0.96 degr...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20180002568 2023-05-15T17:34:01+02:00 The Roles of Climate Change and Climate Variability in the 2017 Atlantic Hurricane Season Molod, Andrea M. Schubert, Siegfried D. Pawson, Steven Kovach, Robin Lim, Young-Kwon Unclassified, Unlimited, Publicly available April 16, 2018 application/pdf http://hdl.handle.net/2060/20180002568 unknown Document ID: 20180002568 http://hdl.handle.net/2060/20180002568 Copyright, Public use permitted CASI Meteorology and Climatology GSFC-E-DAA-TN55444 Conference on Hurricanes and Tropical Meteorology; 16-20 Apr. 2017; Ponte Vedra, FL; United States 2018 ftnasantrs 2019-07-20T23:17:57Z The 2017 hurricane season was extremely active with six major hurricanes, the third most on record. The sea-surface temperatures (SSTs) over the eastern Main Development Region (EMDR), where many tropical cyclones (TCs) developed during active months of August/September, were approximately 0.96 degrees Centigrade above the 1901-2017 average (warmest on record): about 0.42 degrees Centigrade from a long-term upward trend and the rest (around 80 percent) attributed to the Atlantic Meridional Mode (AMM). The contribution to the SST from the North Atlantic Oscillation over the EMDR was a weak warming, while that from ENSO was negligible. Nevertheless, ENSO, the NAO, and the AMM all contributed to favorable wind shear conditions, while the AMM also produced enhanced atmospheric instability. Compared with the strong hurricane years of 2005-2010, the ocean heat content (OHC) during 2017 was larger across the tropics, with higher SST anomalies over the EMDR and Caribbean Sea. On the other hand, the dynamical/thermodynamical atmospheric conditions, while favorable for enhanced TC activity, were less prominent than in 2005-2010 across the tropics. The results suggest that unusually warm SST in the EMDR together with the long fetch of the resulting storms in the presence of record-breaking OHC were key factors in driving the strong TC activity in 2017. Other/Unknown Material North Atlantic North Atlantic oscillation NASA Technical Reports Server (NTRS) |
institution |
Open Polar |
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NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
Meteorology and Climatology |
spellingShingle |
Meteorology and Climatology Molod, Andrea M. Schubert, Siegfried D. Pawson, Steven Kovach, Robin Lim, Young-Kwon The Roles of Climate Change and Climate Variability in the 2017 Atlantic Hurricane Season |
topic_facet |
Meteorology and Climatology |
description |
The 2017 hurricane season was extremely active with six major hurricanes, the third most on record. The sea-surface temperatures (SSTs) over the eastern Main Development Region (EMDR), where many tropical cyclones (TCs) developed during active months of August/September, were approximately 0.96 degrees Centigrade above the 1901-2017 average (warmest on record): about 0.42 degrees Centigrade from a long-term upward trend and the rest (around 80 percent) attributed to the Atlantic Meridional Mode (AMM). The contribution to the SST from the North Atlantic Oscillation over the EMDR was a weak warming, while that from ENSO was negligible. Nevertheless, ENSO, the NAO, and the AMM all contributed to favorable wind shear conditions, while the AMM also produced enhanced atmospheric instability. Compared with the strong hurricane years of 2005-2010, the ocean heat content (OHC) during 2017 was larger across the tropics, with higher SST anomalies over the EMDR and Caribbean Sea. On the other hand, the dynamical/thermodynamical atmospheric conditions, while favorable for enhanced TC activity, were less prominent than in 2005-2010 across the tropics. The results suggest that unusually warm SST in the EMDR together with the long fetch of the resulting storms in the presence of record-breaking OHC were key factors in driving the strong TC activity in 2017. |
format |
Other/Unknown Material |
author |
Molod, Andrea M. Schubert, Siegfried D. Pawson, Steven Kovach, Robin Lim, Young-Kwon |
author_facet |
Molod, Andrea M. Schubert, Siegfried D. Pawson, Steven Kovach, Robin Lim, Young-Kwon |
author_sort |
Molod, Andrea M. |
title |
The Roles of Climate Change and Climate Variability in the 2017 Atlantic Hurricane Season |
title_short |
The Roles of Climate Change and Climate Variability in the 2017 Atlantic Hurricane Season |
title_full |
The Roles of Climate Change and Climate Variability in the 2017 Atlantic Hurricane Season |
title_fullStr |
The Roles of Climate Change and Climate Variability in the 2017 Atlantic Hurricane Season |
title_full_unstemmed |
The Roles of Climate Change and Climate Variability in the 2017 Atlantic Hurricane Season |
title_sort |
roles of climate change and climate variability in the 2017 atlantic hurricane season |
publishDate |
2018 |
url |
http://hdl.handle.net/2060/20180002568 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
CASI |
op_relation |
Document ID: 20180002568 http://hdl.handle.net/2060/20180002568 |
op_rights |
Copyright, Public use permitted |
_version_ |
1766132716033540096 |