Category: References

Sample Drawing: 1. Chl samples are drawn on all rosette bottles tripped from ~200m to surface; sampling on a standard 20-bottle cast usually starts at #7 but refer to electronic sample log. For shallow stations, all the bottles may be sampled; noontime prodo casts may have extra bottles to sample; duplicate depths are usually skipped.  Refer to…

Retrieve an empty nutrient rack from the lab fridge if needed and record the color key with CESL electronic sample log. Wear latex or vinyl gloves; never touch the inside of the cap or tube since residue from your glove can contaminate the sample.  If unavoidable or you drop the lid – rinse several times…

The sample bottle number should ALWAYS match the rosette bottle number on full casts – check and re-check this during the sample drawing process.  If you ever have any doubt about the sample, dump it and start over. Shallow casts with fewer than 20 salt samples may be combined with a previous station. Check with…

The California Cooperative Oceanic Fisheries Investigations (CalCOFI) are a unique partnership of the California Department of Fish and Wildlife, the NOAA Fisheries Service and the Scripps Institution of Oceanography. The organization was formed in 1949 to study the ecological aspects of the collapse of the sardine populations off California. Today its focus has shifted to…

One of the first things taught to new cruise participants is line handling – lines are attached to the CTD-rosette to stabilize it during deployment and recovery.  Rough weather & a rolling ship can cause the 800lbs (empty; 363kg) -1500lbs (full; 680kg) CTD-rosette to swing dangerously when the winch lifts it. Taglines allow the CTD-rosette to…