Additional Calendars
Calendar Views
All
Athletics
Conferences and Meetings
Law School
Special Events

Department of Estuarine and Ocean Sciences Special Seminar-Christian Buckingham

When: Tuesday, December 7, 2021
12:30 PM - 1:30 PM
Where: > See description for location
Description: The School for Marine Science and Technology
Department of Estuarine and Ocean Sciences
Special Seminar Announcement

Title: Submesoscale instabilities at ocean fronts: a review and new result

Presenter: Christian E. Buckingham

Tuesday, December 7, 2021
12:30 pm to 1:30 pm
SMAST East Rooms 101/102
And Via Zoom

Abstract:
Fronts within the ocean surface boundary layer have been identified as agents for enhanced communication between deeper ocean waters and the atmosphere. Given the importance of such exchanges for biogeochemistry and physics in the ocean and atmosphere, obtaining a better understanding of the dynamics of such phenomena appears paramount for better predicting Earth’s regional and global climate.
Mesoscale fronts and eddies are ocean phenomena with horizontal scales of 50 to 200 km and evolving over time scales of days to months. These have received much of the community’s attention during the preceding 50 years, in part because of the widespread use of satellite altimetry. However, advances in autonomous observing platforms and the exponential increase in computational resources available to numerical modelers have afforded scientists an ability to study smaller-scale phenomena. Referred to as “submesoscale” and characterized by horizontal scales of 1 to 10 km and time scales of hours to days, these smaller-scale fronts and eddies are marked by elevated horizontal and vertical shears, reduced stratification, and, consequently, enhanced vertical velocities relative to those found within mesoscale fronts. More recently, scientists have
demonstrated that they can significantly impact local energy, buoyancy, and tracer exchanges in the upper ocean and may have a corresponding global footprint.
In this presentation, I will attempt to review efforts to better understand dynamics within submesoscale fronts. In particular, I will focus on instabilities as departures from balanced flow such as gravitational, symmetric, and inertial or centrifugal instabilities, as well as a mixed layer analogue of the classical baroclinic instability first described by Charney, Eady, and later Stone. Finally, I summarize my own effort to better understand the role of centrifugal forces in ocean fronts and how this might lead to new directions
for the scientific community. The emphasis in this presentation will be on developing a heuristic understanding but I will provide concrete scientific results where possible.
********************************************************************************
Join Zoom Meeting
https://umassd.zoom.us/j/97440069270?pwd=L2Z1bDZESTFCKzJYZWduYVhWenYvZz09

Meeting ID: 974 4006 9270
Passcode: 428029
One tap mobile
+13017158592,,97440069270#,,,,*428029# US (Washington DC)
+13126266799,,97440069270#,,,,*428029# US (Chicago)

Dial by your location
+1 301 715 8592 US (Washington DC)
+1 312 626 6799 US (Chicago)
+1 646 876 9923 US (New York)
+1 253 215 8782 US (Tacoma)
+1 346 248 7799 US (Houston)
+1 669 900 6833 US (San Jose)
Meeting ID: 974 4006 9270
Passcode: 428029
Find your local number: https://umassd.zoom.us/u/adtxYu9NMO

Join by SIP
97440069270@zoomcrc.com

Join by H.323
162.255.37.11 (US West)
162.255.36.11 (US East)
115.114.131.7 (India Mumbai)
115.114.115.7 (India Hyderabad)
213.19.144.110 (Amsterdam Netherlands)
213.244.140.110 (Germany)
103.122.166.55 (Australia Sydney)
103.122.167.55 (Australia Melbourne)
149.137.40.110 (Singapore)
64.211.144.160 (Brazil)
149.137.68.253 (Mexico)
69.174.57.160 (Canada Toronto)
65.39.152.160 (Canada Vancouver)
207.226.132.110 (Japan Tokyo)
149.137.24.110 (Japan Osaka)
Meeting ID: 974 4006 9270
Passcode: 428029
********************************************************************************
For additional information, please contact Sue Silva at s1silva@umassd.edu
Contact: > See Description for contact information
Topical Areas: School for Marine Sciences and Technology, SMAST Seminar Series