Spring 2006 Update: Annual Chlorophyll

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From examination of temporal trends in satellite derived surface chlorophyll for the past eight years, it is evident that there is a high degree of year-to-year variability in the shelfwide chlorophyll index in each of the four subareas. Although this time series of observations is relatively short, the trends for GOM, GB and SNE are similar, showing a down-trend during the past 3 years, whereas the trend in the MAB indicates an increase from 1998 to 2000, followed by lower values during the most recent two years. MAB appears to exhibit the greatest inter-annual variability and GB the least.

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