This site is for providing Salt River ICON/CREWS field maintenance records for NOAA/AOML/ICON data management purposes. Please update this blog whenever new operations are performed in the field, so that AOML can coordinate their efforts with the Salt River ICON/CREWS field efforts.
Dave Ward and Dan McDaid cleaned and Groundtruthed the instruments for SRVI1
on the morning of June 10. It was done with the supervision of a dozen adult
squid. We also noticed that the A. palmata colony under the station is
showing white bloches on the tops of some of the branches.
Dave
David and Sue Ward
Scuba Shack
PO Box 3221
Frederiksted, VI 00841-3221
340-772-DIVE
Toll Free 888-STX-DIVE
www.stcroixscubashack.com
email info@stcroixscubashack.com
According to the transmissions, on Friday, June 10th, the SRVI1 CT was
connected sometime between 9:54am and 10:00am (Eastern Daylight Time).
This was perfect, as it gave us a full 10 measurement counts at the next
transmission hour (11am EDT). It is also okay to connect the CT
slightly earlier than this.
The CT was disconnected sometime between 12:36pm and 12:42pm (EDT).
This was about 20 minutes too early, as we only received 7 (of a
possible 10) measurement counts for that final, post-maintenance hour.
Ideally we want a full hour's worth of data prior to maintenance,
followed by an hour during which maintenance tasks may be performed,
followed by a full hour's worth of data following maintenance.
Note that the earlier maintenance trips on 4/13 and 5/18 were also
slightly off the preferred timing. The 4/13 trip had only 8 measurement
counts for the first hour, suggesting that the CT was connected about 12
minutes too late. The 5/18 trip had only 2 counts for the third hour,
suggesting that the CT was disconnected about 48 minutes too early. As
a reminder, preferred timing would be:
HOUR 1: Pre-Maintenance. Connect the CT no later than 4 minutes
before the hour, and preferably earlier. For example, attach the CT
at 9:45am for a full hour of measurements from 9:56am to 10:56am.
HOUR 2: Maintenance. The CT remains connected while station
maintenance tasks are performed. This work should start no earlier
than 4 minutes before the second hour and end no later than 4 minutes
before the third hour. For example, maintenace work could proceed
from 11am to 11:45am (ending no later than 11:56am).
HOUR 3: Post-Maintenance. The CT should remain connected until at
least 56 minutes into the third hour (4 minutes before Hour 4). For
example, the CT could be disconnected at 1pm (allowing a full hour's
worth of post-maintenance measurements from 11:56am to 12:56pm).
We now have four periods of data from the SRVI1 groundtruth CT. There
is the period on 3/15 during station upgrade and three periods of
station maintenance on 4/13, 5/18 and 6/10. I'm attaching data from
both the Groundtruth CT and the Permanent CTD for these periods:
CT for Groundtruthing CTD permanently Deployed
======================== ========================
Date Time Cond Temp Salt Cnt Cond Temp Salt Cnt
---------- ---- ----- ----- ----- --- ----- ----- ----- ---
03/15/2005 156 56.27 26.42 36.24 10 56.40 26.45 36.31 10
03/15/2005 256 56.22 26.38 36.24 10 56.35 26.41 36.31 10
03/15/2005 356 56.17 26.33 36.24 10 56.28 26.35 36.31 10
03/15/2005 456 56.04 26.21 36.24 10 56.16 26.23 36.31 10
03/15/2005 556 56.02 26.20 36.24 10 56.17 26.23 36.32 10
03/15/2005 656 56.05 26.22 36.24 10 56.20 26.25 36.33 10
03/15/2005 756 56.05 26.21 36.25 10 56.20 26.24 36.33 10
03/15/2005 856 55.99 26.16 36.24 10 56.14 26.19 36.33 10
03/15/2005 956 55.90 26.09 36.23 10 56.05 26.12 36.32 10
03/15/2005 1056 55.85 26.05 36.23 10 56.01 26.08 36.32 10
03/15/2005 1156 55.85 26.05 36.23 10 56.01 26.08 36.32 10
03/15/2005 1256 55.89 26.08 36.23 10 56.04 26.11 36.32 10
03/15/2005 1356 55.91 26.11 36.23 10 56.06 26.13 36.32 10
---------- ---- ----- ----- ----- --- ----- ----- ----- ---
04/13/2005 1456 57.05 27.22 36.18 8 57.72 27.60 36.36 10
04/13/2005 1556 57.37 27.64 36.08 10 57.80 27.66 36.37 10
04/13/2005 1656 57.51 27.75 36.10 10 57.93 27.77 36.38 10
04/13/2005 1756 57.65 27.86 36.11 4 58.05 27.86 36.39 10
---------- ---- ----- ----- ----- --- ----- ----- ----- ---
05/18/2005 1556 57.66 28.45 35.67 10 57.85 28.51 35.76 10
05/18/2005 1656 57.67 28.50 35.64 10 57.86 28.52 35.76 10
05/18/2005 1756 57.83 28.53 35.73 2 57.89 28.54 35.76 10
---------- ---- ----- ----- ----- --- ----- ----- ----- ---
06/10/2005 1456 58.27 28.81 35.82 10 58.27 28.86 35.79 10
06/10/2005 1556 58.33 28.86 35.83 10 58.30 28.88 35.79 10
06/10/2005 1656 58.25 28.88 35.76 7 58.25 28.91 35.73 10
I will also post this message to the SRVI1 blog.
regards,
Mike J+--
Mike Jankulak, Research Associate, University of Miami / CIMAS
NOAA / Atlantic Oceanographic Meteorological Laboratory
4301 Rickenbacker Causeway, Miami, FL 33149 -- 305-361-4543