2010 April 12-14 |
International workshop on
atmosphere-ocean interaction, Bergen
|
2009 November 20
|
Sönke Maus will give a
lecture on What controls the size of a
wind-driven coastal polynya? |
2008 June 6
|
Professor Fangli Qiao will give a
lecture on The effects of surface waves on
the upper ocean and climate system: Focus on the Improvements of POM
and MOM4 |
2007 December 7
|
Tore Furevik will give
a lecture on Reduced Arctic sea-ice
cover: Possible consequences for air-sea interaction, mixing, and ocean
circulation |
2007 November 16
|
Alastair Jenkins will give
a lecture on Incorporation of the effects
of surface waves into the turbulence closure model GOTM. Part 1:
Mathematical and hydrodynamic background
|
2007 October 25-26
|
Workshop on the Influence of waves on turbulence in the
atmosphere and ocean boundary layer in
Oslo. [Program]
|
2007 October 12 |
Alastair Jenkins will give
a lecture on the turbulent boundary layers
above and below the sea surface |
2007 October 1-7 |
Annual
meeting
of
European
Meteorological Society, El Escorial, Spain.
Presentation: Modelling the influence of wind waves
on the turbulent boundary layers above and below the air-water interface,
by
A.
D.
Jenkins, Ø. Sætra, and Yu. I Troitskaya |
2007 September 28 |
First seminar of new semester. Alastair Jenkins will give
an introductory presentation on
atmosphere-ocean interaction.
|
2007 May 7-11
|
Liège,
Belgium - 39th
International
Liège
Colloquium
on Ocean Dynamics and 3rd
Warnemünde Turbulence Days: Turbulence Re-Revisited.
Presentation - Incorporation
of the effects of surface waves into the turbulence closure model GOTM:
Progress Report
|
2007 April 27
|
Guest lecture
by
Yuliya Troitskaya of the Institute
of
Applied
Physics, Nizhny Novgorod, Russia, on A
quasilinear model of wave growth rates and
the drag of the seasurface at hurricane winds |
2007 April 13
|
Seminar by Jochen
Reuder on Flux measurement in the
Arctic |
2007 March 23
|
Seminar by Kristian B. Dysthe of the
Mathematical Institute, University of Bergen, on Rogue waves
|
2007 March 16
|
Guest Lecture
by Professor S. Kitaigorodskii on
Influence of wind-wave
breaking on the structure of subsurface turbulence |
2007 February 16
|
Seminar by Alastair Jenkins on air bubbles
|
2007
January
25
|
Seminar on 2007 February 9 by Igor Esau (new date)
|
2007 January 24
|
The December 8 and January 5 seminar
presentations
are now on
the web site
|
2006 November 13
|
I have posted
the November 10 seminar to
the web site.
The PhD stipend is now advertised,
in Norwegian
and English,
with
a
closing
date of November
29.
Please note that the project web site address has been published
incorrectly - it should be http://www.uib.no/People/gbsaj/SUP/.
|
2006 November 7
|
This
week's
Friday
lecture
is
on the effect of
surface waves on air-sea fluxes.
On November 3, Ken Melville from Scripps Institute
of Oceanography gave a very interesting talk
on airborne measurements of surface waves and breaking off the Pacific
coast of Mexico.
The
presentation for October 27 seminar on the
turbulent
boundary layers above and below the air-sea interface is available
for download. In the talk I referred to two interesting
recent papers:
- S. Nerheim et al., On the influence of buoyancy
fluxes on wind drift currents (J.
Phys. Oceanogr. 36:1591-1604, 2006). Using measurements
from a mooring in the Baltic Sea, the authors compare and contrast the
behaviour of the mixed layer with the theory of the Ekman layer,
showing, for example, how the theoretical Ekman transport, given by the
applied wind stress and predicted to flow at 90 degrees to the right of
the wind direction, compares with the measured transport in the upper
mixed layer.
- A. Lorke & F. Peeters, Toward a unified
scaling relation for interfacial fluxes (J. Phys. Oceanogr.
36:955-961). The authors present a unified theory for transport
across interfaces in turbulent flows: the transport may be of heat by
conduction, or of mass (water vapour, gases etc.), and the interface
may be the water surface or the water-sediment interface. Unlike
momentum and mechanical energy, which may be transported across
interfaces via pressure forces, mass transport and heat conduction must
take place directly through laminar viscous boundary layers adjacent to
the interface. The authors, by assuming that the thickness of
these viscous boundary layers is comparable with both the corresponding
Kolmogorov length scale of the turbulence and the roughness length of
the turbulent boundary-layer flow, are able to show an approximate
unified relationship between the transfer coefficient, the Schmidt
number (ratio of viscosity to diffusion coefficient), and the friction
velocity or interfacial turbulent shear stress.
A PhD stipend covering the
topic of the exchange of heat,
momentum and water vapour between the atmosphere and the ocean in the
Nordic Seas and Arctic Ocean
will be available from early next year, and should soon be advertised
on the University of Bergen web
site with a three-week application deadline.
|
2006
October 13 |
The seminar "Introduction to atmosphere-ocean interaction"
was
held
today.
One of the points raised, the influence of
measurement platform motions on estimated fluxes, is covered in more
detail in a talk
I gave at the Heidelberg
workshop on transport at the air-sea interface last month (see also
"proceedings"
paper).
There are changes to the seminar programme: an international guest will
speak on November 3 (to be confirmed later), and my colleague Haraldur Ólafsson will give a presentation
on November 24. |
|
For a
popular-scientific blog by one
of
my
colleagues, if you understand the Norwegian language you may
go to this page
|
2006
September 29
|
Web site set up and
first seminars are announced. I hope to make this web site a
resource for air-sea interaction research, with links to the latest
literature etc. Although I may not be able to maintain it as a
"proper" blog, I certainly would be happy to receive contributions from
readers, comments, corrections etc.
|
