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Climate Trends in Samoa: Rising Temperatures, Rainfall, Sea Levels, and Extreme Weather Events

The Samoa Meteorology Division reports significant climate trends, including an increase in extreme high air temperatures and rainfall events. Notably, Apia experiences a 10-year return period for 300mm rainfall events, while Afiamalu sees a 5-year return period. Additionally, there’s a rise in drought occurrences, sea levels, and extreme water temperatures influenced by the El Niño-Southern Oscillation (ENSO). Wind gusts have also escalated, with a recorded maximum of 61 knots during Cyclone Heta in January 2004. These patterns highlight the growing impact of climate change on Samoa.

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Climate Trends in Samoa: Rising Temperatures, Rainfall, Sea Levels, and Extreme Weather Events

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  1. Climate Trends in Samoa Meteorology Division

  2. Increase in extreme high air temperatures

  3. Increase in extreme rainfall For a 300mm rainfall event, Apia has return period of 10years and a 5 years for Afiamalu.

  4. Increase number of droughts

  5. Increase in Sea Level Daily sea level for Apia (1993 to 2005 ), relative to mean sea level. Also shown is the linear trend in sea level over the same period (3.7mm)

  6. Increase in extreme water temperatures (influenced by ENSO)

  7. Increase in damaging winds Annual maximum wind gusts recorded at Apia for the period from 1993 to 2005. There is a large inter annual variability and the maximum gust of 61 knots (31.2m/s) was recorded in January 2004 during Cyclone Heta.

  8. Tropical Cyclones

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