July 11, 2000

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Today's Atmospheric/Ocean Weather

Morning

Evening

ATMOSPHERE -- This morning and afternoon are going to be very different. We began the early morning hours with temperatures around 80 and very dark overcast conditions. Winds were from the west north west. This afternoon will clear to a mostly sunny day with temperatures dropping through the day into the upper 60s. Winds in the afternoon should be from the east, pushing the upwelling front back down again.

Plots of today's weather data from the Field Station are shown below.

Other Sites: Current NOAA marine forecast, The Weather Channel, Buoy Observations

OCEAN -- Easy come, easy go. The upwelling winds have left us, and are now downwelling favorable. The inertial motion of the surface layer kept it moving offshore during the morning (CODAR below) but this should reverse by evening and continue for the next couple of days as winds are expected to be from the north. The temperature sections in the R/V Caleta cruise data show the thermocline lower inshore in the afternoon than during the morning runs, which in an indicator of weak downwelling.

The influence of the topographic features is even more pronounced today than it was yesterday. The early morning S1 transect shows a southward flowing surface current that dips down about 8-10m into the trough, and a northward current just above ridge crests. The plot of along-shelf currents with temperature overlays clearly indicates regions of convergence and divergence possibly associated with vorticity dynamics.

Boat Cruise Information

R/V Arabella ----- Sat at dock

R/V Caleta ------ 4 Towed CTD and ADCP Transects (80 km)

S1, A, S2, S1 -- Capt. Ron, Josh K., Kristie A., Hank S.

R/V Maritime Skiff - Wetlands preflight analysis for PHYLLS

Bill Snyder(NRL), Mike(NRL), Rich S., Bob C., Roger H.

R/V Northstar ---- Deployed Scripps buoy (Dickey buoy)

Capt. John Killer, Eric

R/V Walford ------ Hydroscat and Radiometer (2 lines)

A1, S1 --Capt. Danko, Trish B., Matt, Mark M., John S.

Map of Standard Ship Transects

R/V Caleta 11-13 GMT S1 Line (20 km)	Cruise Map	Temperature	Fluorometer	Salinity	Velocity	Density	Temp on Saln
Temp. over Density	Temp. over Fluorometry	Vel. across & Temp	Vel. across & Fluorometry	Vel. across & Density	Vel. along & Temp	Vel. along & Fluorometry	Vel. along & Density

R/V Caleta 13:30-15:45 GMT A Line (20 km)	Cruise Map	Temperature	Fluorometer	Salinity	Velocity	Density	Temp on Saln
Temp. over Density	Temp. over Fluorometry	Vel. across & Temp	Vel. across & Fluorometry	Vel. across & Density	Vel. along & Temp	Vel. along & Fluorometry	Vel. along & Density

R/V Caleta 16:10-18:15 GMT S2 Line (20 km)	Cruise Map	Temperature	Fluorometer	Salinity	Velocity	Density	Temp on Saln
Temp. over Density	Temp. over Fluorometry	Vel. across & Temp	Vel. across & Fluorometry	Vel. across & Density	Vel. along & Temp	Vel. along & Fluorometry	Vel. along & Density

R/V Caleta 18:35-20:45 GMT S1 Line (20 km)	Cruise Map	Temperature	Fluorometer	Salinity	Velocity	Density	Temp on Saln
Temp. over Density	Temp. over Fluorometry	Vel. across & Temp	Vel. across & Fluorometry	Vel. across & Density	Vel. along & Temp	Vel. along & Fluorometry	Vel. along & Density

R/V Walford
12-16 GMT
A Lines

Backscatter
at 440 nm

Flourometry
at 676 nm

Absorption
at 440 nm

Attenuation
at 440 nm

Temperature

Salinity

R/V Walford
17-20 GMT
S1 Line

Backscatter
at 440 nm

Fluorometry
at 676 nm

Absorption
at 440 nm

Attenuation
at 440 nm

Temperature

Salinity

Satellite/CODAR Data

CODAR
Morning

CODAR
Afternoon

Last reviewed: July 26, 2000