Climate Outlook – 2011/2012 Nadraki Weather

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Presentation transcript:

Climate Outlook – 2011/2012 Nadraki Weather

El Nino / Southern Oscillation

Normal conditions

Southern Oscillation Index (SOI) SOI is the standardised anomaly of the Mean Sea Level Pressure difference between Tahiti and Darwin. It is calculated as follows: [ Pdiff - Pdiffav ] SOI = SD(Pdiff) where Pdiff = (average Tahiti MSLP for the month) - (average Darwin MSLP for the month), Pdiffav = long term average of Pdiff for the month in question, and SD(Pdiff) = long term standard deviation of Pdiff for the month in question.

South Pacific Convergence Zone

Neutral

El Nino

La Nina

References NIWA Island Climate Update September ENSO Observations Fiji Climate Outlook Fiji Climate Outlook

Climate is what you expect, weather is what you get Day to day weather is highly variable in the Pacific. Day to day weather is highly variable in the Pacific. Large ocean areas and small landmass means minor movements of weather systems can have significant impacts. Large ocean areas and small landmass means minor movements of weather systems can have significant impacts. It only takes one cyclone to ruin your day! It only takes one cyclone to ruin your day!

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