North Atlantic Oscillation

Variability

Snow variability and NAO predictability and change

Snow

Data Analysis

Climate variability

• Air-sea interaction
  • Large scale
  • Upwelling
  • Sea ice
• Air-land interaction
  • Snow
• Local responses

Climate predictability

• Linear model

• Analog technique

Snow cover extent fluctuations over Eurasia and NAO persistence

• observed predictive relationship between snow cover extent from April to October and next DJFM NAO index

• proposed mechanism

• regional climate experiments backing the proposed mechanism

Eurasian Snow cover and November signal

• number of days with snow cover in November and NAO

• snow cover frequencies in November and NAO

Observed snow variability and change in Romania

• analysis of snow depth using 94 Romanian stations (1961-2000)

EOF

CCA

POP

MICOM

Roxana Bojariu Copyright © 2002-2009

NAO