Lines are offshore surface temperatures from buoys
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Lines are offshore surface temperatures from buoys Black solid is temperature at max S in lower estuary stations Color bars are index of upwelling (CUI and CR buoy N-S wind). Other buoys. Classifying normalized temperature. Train the classifier on summer 2004 data

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Lines are offshore surface temperatures from buoys

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Lines are offshore surface temperatures from buoys

Lines are offshore surface temperatures from buoys

Black solid is temperature at max S in lower estuary stations

Color bars are index of upwelling (CUI and CR buoy N-S wind)


Lines are offshore surface temperatures from buoys

Other buoys


Classifying normalized temperature

Classifying normalized temperature

  • Train the classifier on summer 2004 data

  • Raw T at max S in lower estuary (red26, jetta, sandi) marked as

    • Downwelling if T>11

    • Upwelling if T<10

    • Intermediate if 10<T<11

    • (based on nitrate-S-T relationship from Ken Bruland)

      Only works for data normalized on buoys with extensive data in summer 2004 (46041 and 46050)


Lines are offshore surface temperatures from buoys

Index based on T at max S in lower estuary

Index based on mean buoy

Other indexes

Red = downwelling, Blue = intermediate, Green = upwelling


Lines are offshore surface temperatures from buoys

During 2006, instruments were deployed at ogi01 at

1m (blue), 5m (green), 10 m (red), and 50 m (light blue)

Black line shows estimated temperature of ocean end-member for estuary, based on s-t regression and on T at max S

Challenge: categorize estuary

Additional images


Other sources

Other sources

  • Salinity data in lower estuary (32 + psu = upwelling)

  • RISE buoys (multi-level data in 2004 and 2005)

  • Additional offshore nitrate profile data

  • Eventually, saturn-01 continuous nitrate data will provide a strong test of the upwelling index


Lines are offshore surface temperatures from buoys

Index based on T at max S in lower estuary

Red = downwelling, Blue = intermediate, Green = upwelling


Lines are offshore surface temperatures from buoys

Index based on T at max S in lower estuary

Red = downwelling, Blue = intermediate, Green = upwelling


Lines are offshore surface temperatures from buoys

Index based on extrapolated T

Index based on mean buoy

Red = downwelling, Blue = intermediate, Green = upwelling


Lines are offshore surface temperatures from buoys

Index based on extrapolated T

Red = downwelling, Blue = intermediate, Green = upwelling


Lines are offshore surface temperatures from buoys

Index based on extrapolated T

Red = downwelling, Blue = intermediate, Green = upwelling


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