North Atlantic Oscillation

Observed data . Reanalysis . Satellite data . Model results

NAO

NAO signal

North Atlantic Oscillation (NAO) and its understanding

Data Analysis

Climate variability

Air-sea interaction
Air-land interaction
- Snow
Local responses

Climate predictability

Linear model
Analog technique

FP 6 Project DYNAMITE, financially supported by the European Union, has tried to understand the dynamics of the coupled climate system focusing on ENSO and NAO.

NAO phenomenon may be described as a mode of internal atmospheric dynamics influenced by external factors:

NAO influences

1. over Atlantic ocean

a. wind
b. SST
c. precipitation
d. heat fluxes
e. fresh water fluxes
f. sea-ice
g. coastal upwelling

2. over land

a. temperature
b. precipitation
c. snow cover

External factors influencing NAO

1. sea surface temperature (SST)

a. tropical
b. extratropical

2. Arctic sea-ice

3. snow cover extent

4. greenhouse gas concentrations

NAO modeling and prediction

1. statistic approach

2. deterministic approach

NAO