Ocean Circulation and Dynamics, Ocean’s Role in Climate
My overall research interest is the fundamental understanding of the physics of the basin-scale ocean and its role in Earth’s climate. I am involved in improving estimates of the geophysical state of the ocean circulation through analysis of field data and circulation model results. The subpolar North Atlantic and Arctic Ocean ventilation process (rates, pathways, variability, and mechanisms) interest me in particular. High latitude physical oceanography, in both hemispheres, is another research theme. I also investigate key physical processes that maintain the state of the global upper ocean focusing on fluid dynamics and thermodynamics and their role in controlling sea surface temperature variability over years to decades. These are all examples of rotating stratified fluid dynamics, an amazing and beautiful subject.
Knowledge of these processes is vital if we are to describe and understand climatic fluctuations on time-scales of years to decades. At these low frequencies we know that the ocean and atmosphere interact as a coupled system. Understanding low frequency natural climate perturbations is clearly a problem of special current relevance. Further, explaining natural climate variability is a prerequisite of addressing mankind’s effect on global climate.
Moreover, this understanding guides our thinking about other oceans in time and space. Recent discoveries of extra-terrestrial oceans in our solar system and recognition of how much Earth’s ocean has changed in the past, galvanizes me to think about the role of oceans in planetary system dynamics writ large.
2012–2018 Morton K. Blaustein Chair and Professor of Earth & Planetary Sciences, Johns Hopkins University.
2000– Assistant, Associate, then Full Professor, Johns Hopkins University.
1996 University Lecturer in Physics, University of Oxford, UK.
1994 Postdoc, MIT.
1993 Ph.D. Physical Oceanography, University of Southampton, UK (alumnus profile).
1992 M.A. Physics & Theoretical Physics, University of Cambridge, UK.
1988 B.A. Physics & Theoretical Physics, University of Cambridge, UK
RSS news feed: https://sites.krieger.jhu.edu/haine/?feed=rss2
News & Announcements
Tom has submitted a commentary article to Geophysical Research Letters. The commentary concerns the recent paper by Jahn & Laiho (2020) that the observed freshwater accumulation in the Arctic Ocean is anthropogenic. The Abstract reads: Arctic Ocean freshwater storage increased since the mid 1990s, but the cause was unknown. Now a recent paper by Jahn… Read more »
Graduate student Atousa Saberi has published a paper in the Journal of Physical Oceanography entitled “Lagrangian Perspective on the Origins of Denmark Strait Overflow”. See the paper here!
David Trossman, collaborator and former Johns Hopkins postdoc working at NASA GSFC, has submitted a manuscript to JAMES on Tracer Versus Observationally-Derived Constraints on Ocean Mixing Parameters in an Adjoint-Based Data Assimilation Framework. See the preprint here.
Tom has submitted a paper to JPO called A Conceptual Model of Polar Overturning Circulations. Here’s the abstract: The global ocean overturning circulation carries warm, salty water to high latitudes, both in the Arctic and Antarctic. Interaction with the atmosphere transforms this inflow into three distinct products: sea ice, surface Polar Water, and deep Overflow… Read more »
Jan Erik Tesdal, collaborator and graduate student at Columbia University, has submitted a paper to the Journal of Geophysical Research (Oceans) with Tom. The title is: Dominant terms in the freshwater and heat budgets of the subpolar North Atlantic Ocean and Nordic Seas from 1992 to 2015. Check it out on ESSOAr!
Tom published a paper in JGR Oceans with colleague Darryn Waugh. See it here.
Miguel gave a great seminar in our Atmospheres & Oceans discussion group last week. He discussed his PhD thesis research on the dynamics of flow across the Greenland-Scotland Ridge. You can watch it here!
Leon Vlieger has written a review of Ocean Circulation in Three Dimensions.
Mattia Almansi presented and defended his PhD thesis yesterday. His thesis title is “Denmark Strait Ocean Circulation Variability.” The presentation and discussion was online with participants in Europe and the US. Mattia himself was alone in an AirBnB in Southampton, UK (where he will start his postdoc next week). Under these challenging circumstances, Mattia did… Read more »
Postdoc Miguel Jimenez Urias, Tom Haine, and Charles Meneveau have been awarded a $25,000 IDIES seed fund grant for the project “Towards the Development of Scale-Dependent, Non-Local, Turbulent Closures in Rotating Stratified Flows”! The project will last one year, starting 1 April 2020.