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CATEGORIES:College of Arts and Sciences,College of Engineering,SMAST,Thesis
 /Dissertations
DESCRIPTION:Department of Fisheries Oceanography MS Thesis Defense "Thermod
 ynamical Drivers of Regional Warming in the Northeastern United States" By
 : Adriano Giangiardi Advisor Dr. Changsheng Chen (UMass Dartmouth) Committ
 ee Members Dr. Geoffrey Cowles (UMass Dartmouth), Dr. Siqi Li (UMass Dartm
 outh), and Dr. Lu Wang (UMass Dartmouth) Monday August 10, 2026 2:00 PM SM
 AST East 101-103 836 S. Rodney French Blvd, New Bedford and via Zoom Abstr
 act: The Gulf of Maine (GoM) is among the fastest-warming regions in the g
 lobal ocean, with an observed basin-wide warming rate of approximately 0.0
 5掳C per year, substantially exceeding the global upper-ocean average. Alt
 hough this accelerated warming has been well documented, the relative cont
 ributions of local atmospheric forcing and remote ocean heat transport hav
 e not been quantitatively determined. This thesis addresses this knowledge
  using the Northeast Coastal Ocean Forecast System (NECOFS) hindcast datas
 et. Atmospheric and oceanic fields from the NECOFS hindcast were used to c
 onstruct a volume-integrated heat budget model for the GoM, enabling the r
 elative contributions of surface air-sea heat fluxes and lateral heat tran
 sport to be quantified. The hindcast was first evaluated against observati
 ons of near-surface atmospheric variables, ocean currents, seawater temper
 ature, and sea surface elevation, demonstrating good agreement across all 
 evaluated variables. The heat budget was decomposed into local thermodynam
 ic forcing (air-sea heat flux) and remote advective transport (lateral hea
 t transport through the GoM boundaries). Comparisons between two represent
 ative periods (1995-2001 and 2017-2023) show that changes in heat transpor
 t account for approximately 93% of the increase in the basin heat budget, 
 whereas enhanced local atmospheric heating contributes only about 7%. Furt
 her decomposition of the advective term reveals a substantial reorganizati
 on of the primary heat transport pathways. The dominant inflow shifted fro
 m the Scotian Shelf during 1995-2001 to the southwestern side of the North
 east Channel during 2017-2023, while the contribution from the Northeast C
 hannel itself declined markedly. At the same time, reduced outflow through
  the Middle Atlantic Bight likely increased the residence time of warm wat
 er within the basin, further enhancing regional warming. River heat input 
 remained negligible throughout both periods. These results demonstrate tha
 t the recent acceleration of warming in the GoM is controlled primarily by
  changes in regional ocean circulation rather than by increased local atmo
 spheric heating. The study provides a quantitative framework for distingui
 shing the relative roles of atmospheric forcing and oceanic heat transport
  in regional climate change and offers new insight into the physical mecha
 nisms responsible for long-term warming in the northeastern U.S. shelf eco
 system. Join Meeting https://umassd.zoom.us/j/98165845430 Note: Meeting ID
  and passcode required, email contact to obtain. For additional informatio
 n, please contact Callie Rumbut at c.rumbut@umassd.edu\nEvent page: https:
 //www.umassd.edu/events/cms/8-10-26-thermodynamical-drivers-of-regional-wa
 rming.php\nEvent link: https://umassd.zoom.us/j/98165845430
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</script><p>Department of Fisheries Oceanog
 raphy</p>\n<p>MS Thesis Defense</p>\n<p>"Thermodynamical Drivers of Region
 al Warming in the Northeastern United States"</p>\n<p>By: Adriano Giangiar
 di</p>\n<p>Advisor</p>\n<p>Dr. Changsheng Chen (UMass Dartmouth)</p>\n<p>C
 ommittee Members</p>\n<p>Dr. Geoffrey Cowles (UMass Dartmouth)\, Dr. Siqi 
 Li (UMass Dartmouth)\, and Dr. Lu Wang (UMass Dartmouth)</p>\n<p>Monday Au
 gust 10\, 2026</p>\n<p>2:00 PM</p>\n<p>SMAST East 101-103</p>\n<p>836 S. R
 odney French Blvd\, New Bedford</p>\n<p>and via Zoom</p>\n<p>Abstract:</p>
 \n<p>The Gulf of Maine (GoM) is among the fastest-warming regions in the g
 lobal ocean\, with an observed basin-wide warming rate of approximately 0.
 05掳C per year\, substantially exceeding the global upper-ocean average. A
 lthough this accelerated warming has been well documented\, the relative c
 ontributions of local atmospheric forcing and remote ocean heat transport 
 have not been quantitatively determined. This thesis addresses this knowle
 dge using the Northeast Coastal Ocean Forecast System (NECOFS) hindcast da
 taset. Atmospheric and oceanic fields from the NECOFS hindcast were used t
 o construct a volume-integrated heat budget model for the GoM\, enabling t
 he relative contributions of surface air-sea heat fluxes and lateral heat 
 transport to be quantified. The hindcast was first evaluated against obser
 vations of near-surface atmospheric variables\, ocean currents\, seawater 
 temperature\, and sea surface elevation\, demonstrating good agreement acr
 oss all evaluated variables. The heat budget was decomposed into local the
 rmodynamic forcing (air-sea heat flux) and remote advective transport (lat
 eral heat transport through the GoM boundaries). Comparisons between two r
 epresentative periods (1995-2001 and 2017-2023) show that changes in heat 
 transport account for approximately 93% of the increase in the basin heat 
 budget\, whereas enhanced local atmospheric heating contributes only about
  7%. Further decomposition of the advective term reveals a substantial reo
 rganization of the primary heat transport pathways. The dominant inflow sh
 ifted from the Scotian Shelf during 1995-2001 to the southwestern side of 
 the Northeast Channel during 2017-2023\, while the contribution from the N
 ortheast Channel itself declined markedly. At the same time\, reduced outf
 low through the Middle Atlantic Bight likely increased the residence time 
 of warm water within the basin\, further enhancing regional warming. River
  heat input remained negligible throughout both periods.</p>\n<p>These res
 ults demonstrate that the recent acceleration of warming in the GoM is con
 trolled primarily by changes in regional ocean circulation rather than by 
 increased local atmospheric heating. The study provides a quantitative fra
 mework for distinguishing the relative roles of atmospheric forcing and oc
 eanic heat transport in regional climate change and offers new insight int
 o the physical mechanisms responsible for long-term warming in the northea
 stern U.S. shelf ecosystem.</p>\n<p>Join Meeting</p>\n<p>https://umassd.zo
 om.us/j/98165845430</p>\n<p>Note: Meeting ID and passcode required\, email
  contact to obtain.</p>\n<p>For additional information\, please contact Ca
 llie Rumbut at c.rumbut@umassd.edu</p><p>Event page: <br>Event link: </p></body></html>
DTSTAMP:20260717T023553
DTSTART;TZID=America/New_York:20260810T140000
DTEND;TZID=America/New_York:20260810T150000
LOCATION:SMAST East 101-103
SUMMARY;LANGUAGE=en-us:Thermodynamical Drivers of Regional Warming in the N
 ortheastern United States
UID:fd59c70242d442beab70d8a683dcd61d@www.umassd.edu
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