Cleaning Updated August 31

A complete cleaning of the CREWS station in La Parguera, Puerto Rico was performed on August 31, 2007 by Brandi Todd, Rosa Linda Gonzalez and Katie Flynn.

The validation CT was installed at 7:50am and removed at 11:15am. The station was cleaned between 9:05 and 9:55am.

No particulars were observed.

Maintenance Update

A complete cleaning of the CREWS station in La Parguera, Puerto Rico was performed on August 10, 2007 by Wess Merton, Stephanie Williams and Katie Flynn.

The validation CT was installed at 8:45am and removed at 12:00pm. The station was cleaned between 10:05 and 11:30am.

The optical sensors of the radiometers were cleaned, there is some calcareous algae overgrowing such sensors.

The CTDs were cleaned and three of the copper screens were replaced, the fourth remains inaccessible.

SAMI pCO2 Re-installed

Milton Carlo and Jorge Corredor re-installed the SAMI pCO2 today after Chris Langdon and Joanie Kleypas re-filled the SAMI with reagents and worked on the water sampler last week. The SAMI appears to be putting out good data again.

Jim

Update on BICs, SAMI

I cleaned the BICs on May 14. They were very fouled. On May 16 the SAMI was recovered, cleaned, and chemicals replaced. The battery was surprisingly still good,i.e. 13.1 volts so I did not replace it. The SAMI was reinstalled on the stick later in the day. Hopefully it is now reporting data.

Chris Langdon

Maintenance Log

Just a note to let you know the students work this semester.

Here is a small table of when/what for the CREWS.

Francisco

2/1/2007, Complete, CTD validation
2/15/2007, Basic, Cleanded algal growth on chains, and mainframe
3/5/2007, Complete, CTD validation
3/13/2007, Basic, cleaned and examined all gauges, stantions, and chain links
3/27/2007, Complete, CTD validation, need screens
4/17/2007, Basic, cleaned algal growth on chains, and mainframe
5/2/2007, Complete, CTD validiation, changed 3 of 4 screens
5/15/2007, Basic, cleaned algal growth on chains, and mainframe

Samples for Ocean Acidification Studies Taken

On 5/14/07  the BIC sensors were observed to be heavily fouled.  I cleaned
both.

Water samples for TA, DIC and O2 were collected on 5/14. 5/15, 5/16, 5/17 and 5/18.  These data indicate that the SAMI was reading high by 84 uatm before the change of chemicals on 5/16/07.

Jorge's SeaCat CTD was profiled at the stick on 5/15 and 5/18.

The AOML water sampler was deployed at the stck on 5/17 and 5/18 and collected twelve good samples.  Unfortunately the SAMI was not operational that the time.

Chris

Maintenance Update

We have been maintaining every two weeks, ground through the CTD every other cleaning (once a month).

Francisco