The effect of large scale oscillitions on arctic surface ozone concentration

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The effect of large scale oscillitions on arctic
surface ozone concentration

• EAS6410
• Xueyuan Deng

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What can influent ozone concentration

• Radiation
• Chemical componet of the atmosphere
• Transport

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Data used here

• Station observation
• Barrow, Alaska(71.32N,156.61W)
• 8 meters
• 1973 Present
• Index

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Atmosphere events

• The EOFs of NH (20-90N) SLP monthly anomaly
  covariance
• NAM(18.0)
• PNA(10.3)
• EOF3(9.3)

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NAM
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PNA
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Ocean Events

• ENSO
• The index is the average SST anomaly
  equatorward of 20-degrees latitude (north and
  south) minus the average SST poleward of
  20-degrees, and it captures the low-frequency
  part of the ENSO phenomena. Anomalies are with
  respect to the period 1950-79.
• PDO
• Derived as the leading PC of monthly SST
  anomalies in the North Pacific Ocean, poleward of
  20N.

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Ocean
winter Spring Summer Autumn
ENSO 0.2882 -0.0796 0.1173 0.0668
PDO 0.2497 -0.0580 -0.0967 -0.0567
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SUMMARY

• Temperature is well related with Ozone
  concentration
• The effect of atmospheric oscillation can be
  observed the whole year
• The influence of SST can be seen in winter