Environmental Engineering Reference
In-Depth Information
Fig. 18.2
AVHRR (
top panel
) and SeaWiFS (
bottom
)
E
.
huxleyi
composites for June 10-17,
1998.
White
pixels indicate
E
.
huxleyi
bloom;
blue
pixels, no bloom;
gray
pixels are missing data;
the four regions we highlight in this study are outlined in
red
over the 25-year period. The seasonal cycle in the coverage of
E
.
huxleyi
was
calculated by averaging coincident periods for all years and performing a 5-week
running box car filter. Anomalies were not found useful for this analysis due to the
annual variability in bloom onset; therefore, this analysis focused on the original time
series and annual cumulative values.
18.2.4 Geophysical Data and Climate Indices
The areal extent of
E
.
huxleyi
blooms were compared to sea-surface temperature
(SST) and mixed-layer depth. Optimally interpolated weekly and monthly
1
resolution SST (NOAA OI.v2) were created from in situ and satellite-derived
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