Climate Dynamics and Prediction

Group Leader: 
Yongqi Gao


About us

Our goal is to provide reliable climate prediction and advance the understanding of climate variability, predictability, and impacts.

Research Objectives

  • Mechanisms of climate variability and predictability

Disentangle the anthropogenic climate change signal from the natural climate variability and elucidate the mechanisms of variability from sub-seasonal to multi-decadal time scales, for both developing understanding and aiding prediction.

  • Understand and reduce errors in climate projections/predictions

Identify climate model errors, diagnose their origins, and assess their impacts in order to improve our simulations and build confidence in our climate simulations.

  • Identify the role of teleconnections between high and low latitudes

Explore the impacts of Arctic sea ice decline on climate variability and mid-latitude extreme weather events, and the converse influence of lower latitudes on the Arctic in order to broaden the usefulness and applicability of climate predictions.

  • Innovation and development of Climate services

Support the development of climate services in Norway through global climate reconstruction and prediction; advanced statistical analysis of extreme events; urban climate and air quality assessment, with the aim to deliver information of interest to stakeholders and society.

Tools and Software

We actively develop and maintain:    

  • The Norwegian Climate Prediction Model (NorCPM) that combines the Norwegian Earth System model with the ensemble Kalman Filter data assimilation method.
  • Fine scale climate assessment (FineClim) based on PALM, ECMWF boundary conditions, and measurements. 
  • Validation & diagnostics packages and ocean tracer simulations for the Norwegian Earth System Model (NorESM


Name Area of Expertise
Francois Counillon
data assimilation
sea ice
Helene R. Langehaug oceanography
Igor Ezau other scientific field
Lingling Suo meteorology
Noel Keenlyside meteorology
Richard Davy physics
Stephen Outten geophysics
Tarkeshwar Singh
data assimilation
Victoria Miles
remote sensing
Yanchun He oceanography
Yiguo Wang data assimilation
Yongqi Gao oceanography


Ongoing projects
TRIATLAS: South and Tropical Atlantic - climate-based marine ecosystem prediction for sustainable management (TRIATLAS)
CAATEX: Coordinated Arctic Acoustic Thermometry Experiment
Blue-Action: Arctic Impact on Weather and Climate
CONNECTED: Chinese-Norwegian partnership in climate teleconnection and prediction
INTAROS: Integrated Arctic Observation System
ARCPATH: Arctic Climate Predictions: Pathways to Resilient, Sustainable Societies
Completed projects
INES: Infrastructure for Norwegian Earth System modelling (INES)
TRAKT-2018: Transferable Knowledge and Technologies for High-Resolution Environmental Impact Assessment and Management
InterDec: InterDec - The potential of seasonal-to-decadal-scale inter-regional linkages to advance climate predictions
IMOS: Isfjorden Marine Observatory Svalbard
SNOWGLACE: The Changing Arctic Cryosphere: Snow and Sea Ice Impact On Prediction and Climate Over Europe and Asia
iNcREASE: NoRthern European and Arctic Sea lEvel
PARADIGM: Prediction And RegionAl DowscalInG Models
EVA: Earth system modelling of climate Variations in the Anthropocene
ORGANIC: Overturning ciRculation and its implications for Global cArboN cycle In Coupled models
GREENICE: NordForsk Impact of Future Cryospheric Changes on Northern Hemisphere Climate
EPOCASA: Enhancing seasonal-to-decadal Prediction Of Climate for the North Atlantic Sector and Arctic
EuraArc: Impact of Arctic sea ice decline on Eurasian Climate
NORTH: NORthern constraints on the Atlantic ThermoHaline circulation
VENTILATE: Ventilation and remineralisation in polar and sub-polar regions as indicators for climate change
NACLIM: North Atlantic Climate: Predictability of the climate in the North Atlantic/European sector
INDIA-CLIM: Decadal to multi-decadal variability in the Indian Monsoon Rainfall and teleconnection with Atlantic Multidecadal Oscillation (AMO)
GreenSeas: Development of global plankton data base and model system for eco-climate early warning
Predictability of Arctic/North Atlantic climate”, research project of the Centre of Climate Dynamics: PRACTICE
BlueArc: Impact of ‘Blue Arctic’ on Climate at High Latitudes
EastAMOC: Response of East Asian climate to reduced Atlantic Meridional Overturning Circulation


Podcast with Igor Ezau – Heatwaves, the weather that can kill thousands in developed countries

08.10.2020 - 14:30 Henrike Wilborn
Stephen Outten and Ingjald Pilskog host the Bjerknes Centre for Climate Research podcast and recently talked to Igor Ezau about heatwaves and their dangers....

Scientific breakthrough: Winter climate in Norway now more predictable

29.07.2020 - 17:00 Henrike Wilborn
Scientists from the Bjerknes Climate Prediction Unit, affiliated with the Nansen Environmental and Remote Sensing Center, the Bjerknes Centre for Climate...

Et hav av ulike vannmasser

11.10.2018 - 12:22 Asle Wingsternes
Innlegget er skrevet av forsker Helene R. Langehaug ved Nansensenteret, og ble først publisert i tidligere denne uken. Havet er blått og vann...

Quality assessment of a 23-years ARC MFC reanalysis of the Arctic Ocean

31.01.2017 - 12:25 Lasse Pettersson
Nansen Center scientists, lead by scientist Dr. Jiping Xie, have published a comprehensive quality assessment of the TOPAZ4 ocean and sea ice model reanalysis...

Kronikk: Menneskeskabte klimaforandringer: Trump og klimaaftalen fra Paris

24.01.2017 - 12:21 Sebastian Mernild
Af Sebastian H. Mernild, professor i klimaforandringer (dr. scient) og administrerende direktør for Nansen Centeret, Norge, ogprofessor i klimafysik Jens...

New study: Weakening of North Atlantic current can be prevented by reducing carbon emissions

13.12.2016 - 17:17 Lasse Pettersson
Nansen Center CEO Sebastian Mernild participates in an international study incorporating a comprehensive assessment of Greenland Ice Sheet melting suggesting...

A new method for constraining the ocean in coupled system model for long reanalysis and climate predictions

08.12.2016 - 11:04 Lasse Pettersson
Nansen and Bjerknes scientists have for the first time demonstrated the capability - thanks to an advanced data assimilation method - to constrain ocean...

Arctic climatic temperature amplification in the addressed in two resent papers in Tellus

10.11.2016 - 15:10 Lasse Pettersson
Nansen Center scientists in Bergen and St. Petersburg have in two resent papers in the Tellus addressed the climatic temperature amplification in the Arctic,...

Award for most sited climate paper at SpringerLink in 2015

17.08.2016 - 16:28 Lasse Pettersson
The paper Arctic sea ice and Eurasian climate: A Review was the most downloaded paper published in Advances in Atmospheric Sciences at SpingerLink in 2015....

Doctoral dissertation; Climate variability research cooperation between Norway, India and China

03.06.2016 - 10:08 Lasse Pettersson
Lea Svendsen defended her doctoral thesis Impact of Atlantic multi-decadal variability on the Indo-Pacific and Northern Hemisphere climate at the Nansen Center...