Transcript Climate Outlook – 2011/2012

Climate Outlook – 2011/2012
Nadraki Weather
www.nadraki.com
[email protected]
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 = 10 ------------------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 132 - September 2011

Http://www.niwa.co.nz/node/102804
ENSO Observations
 www.bom.gov.au/climate/enso/


Fiji Climate Outlook
http://www.met.gov.fj/aifs_prods/Outlook.pdf
Climate is what you expect,
weather is what you get

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.

It only takes one cyclone to ruin your day!