Previous Seminars

Meteorological Temperature Profiler MPT5 in Bergen

Speaker: 
Evgeny Miller
Seminar Date: 
10. February 2011 - 12:15 - 13:00

Nansen Centre has bought a new measurement device Meteorological Temperature Profiler MPT5. Its aim is to collect information about the vertical structure of the boundary layer and temperature inversions. This device is now set up and working at GFI. Evgeny Miller - one of its developers - will give a lecture about the device, algorithms and places where other such devices have been installed.

Utilization of the ETKF : an optimal control law for the adaptive optics of the E-ELT ?

Speaker: 
Morgan Gray
Affiliation: 
OAMP, France
Seminar Date: 
3. February 2011 - 12:15 - 13:00

Adaptive Optics (AO) systems require the implementation of techniques intended for real time identification of atmospheric turbulence. Nowadays there are several approaches. One of them is using the Kalman Filter and presents numerous advantages at the level of optimal control. However it will be impossible to install this process within the frame of an AO system for any ELT class telescope (about 42m for the diameter) because of the quantitative leap in the number of parameters (high dimensional system) and consequently the quantitative leap in the cost in real time processes.

Culture of calculations versus culture of simulations. What is wrong with Earth's System Modelling?

Speaker: 
Igor Esau
Seminar Date: 
27. January 2011 - 12:15 - 13:00

Although the models of the Earth's Climate System and a laboratory thermodynamical system could be mathematically similar, their philosophical load could not be more different. Probably unexpectedly, the philosophy of the model has large effect on the interpretation of the model results and not least on the direction of the model development. This seminar will contrast two research cultures.

Sea Level Rise

Speaker: 
Jan Even Ø. Nielsen
Seminar Date: 
24. January 2011 - 12:30 - 13:00

As part of a project coordinating meeting on Monday I will present the ongoing project 'Sea Level Rise' This talk will be open to all at NERSC.

Wave attenuation in the presence of an ice cover

Speaker: 
Timothy Williams
Seminar Date: 
20. January 2011 - 12:15 - 13:00

In this talk I will overview some of my research prior to starting at NERSC, particularly in regard to using wave attenuation to remotely sense average ice thickness.

Scale-Sensitive Coupling of Climate and Carbon Cycling and Ecosystem Production in the Southern Ocean

Speaker: 
Pedro M. Scheel Monteiro
Affiliation: 
NRE Research Fellow, Council of Scientific and Industrial Research, Stellenbosch, South Africa
Seminar Date: 
11. January 2011 - 13:15 - 14:00

The Southern Ocean Carbon - Climate Observatory is a new South African programme which aims to make a contribution to advancing the understanding of the role of the Southern Ocean in the coupled global Carbon - Climate System. This programme has a strong biogeochemical focus on carbon fluxes linked to understanding its sensitivity to large scale climatology forcing by both the SAM and ENSO. This programme combines a long term observation activity with the use of high resolution models as experimental platforms.

Physical factors influencing water quality in the Nordic Seas

Speaker: 
Anton Korosov
Seminar Date: 
17. December 2010 - 13:00 - 13:45

The report summarizes results of analysis of remote sensing, reanalysis and modeling data collected during 10 years (1998 – 2007). These data were synergistically used for studying seasonal and inter-annual dynamics of water quality in the Nordic Seas. A novel approach for merging these datasets was developed, main forcing physical factors were identified, and decadal changes of the ecosystem were estimated.

Interannual variability of sea ice export into the East Greenland Current

Speaker: 
Sara de la Rosa Höhn
Seminar Date: 
16. December 2010 - 13:30 - 14:00

A step forward in modeling the marginal ice zone

Speaker: 
Dany Dumont
Seminar Date: 
9. December 2010 - 12:15 - 13:00

I will present an overview of the progress that has been made in modeling the dynamics of the marginal ice zone during my stay at the Nansen Center. I will also discuss main research problems and challenges that need to be addressed in this field.

Clouds and the Radiation budget over the Arctic Ocean - Results from CloudSat and CALIPSO

Speaker: 
Marta Zygmuntowska, University of Hamburg
Seminar Date: 
29. November 2010 - 14:15 - 15:00