East Sea -- Thermal/Bio-Optical Relationships • Define region of interest • Extract ROI pixels from SST (AVHRR) and chlorophyll (SeaWiFS) imagery - daily scenes and monthly composites • Examine thermal/bio- optical relationships (scatter plots, image overlays) • Examine temporal and spatial changes (time-series analysis, histograms) North Basin Subpolar Front South Basin Korean Coast
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East Sea -- Thermal/Bio-Optical Relationships
• Define region of interest
• Extract ROI pixels from SST (AVHRR) and chlorophyll (SeaWiFS) imagery - daily scenes and monthly composites
• SST at the front increased ~ 6° over 1.5 month period from late April to early June.
• SST/chlorophyll relationship is complex:- high chlorophyll related to mixing regimes?
- not tied as much to water mass distribution?
• At Subpolar Front, chlorophyll concentration was highest south of front in March and April, north of front in May and June (although concentrations were lower).
• Spatial/Temporal Distributions:April - highest chlorophyll in Korean Coastal and
South Basin; lower at Front and North Basin.
May - Decrease at Korean Coast and South Basin (sharp); no change at Front; highest at North Basin (sharp increase).
June - All areas very low, particularly South Basin; North basin is the highest.