OCADSAccess DataNDP-064NDP-064 - Notations from At-Sea Notebooks, E-Mail, Correspondence During the Cruise, and the Post-Cruise Analysis of the Data
Notations from At-Sea Notebooks, E-Mail, Correspondence During the Cruise, and the Post-Cruise Analysis of the Data
NDP-064 APPENDIX B
Notations are compiled from the at-sea notebooks, e-mail correspondence during the cruise as well as post-cruise analysis of the data
The following notations are compiled from the at-sea notebooks, e-mail correspondence during the cruise as well as post-cruise analysis of the data. Many of the notations did not have a noticeable impact on the final results, but have been included in an attempt to be thorough. All notations are indexed to 1995 days and are broken down into WOCE leg designations.
Section I8S/I9S
-31.0000 Bob Key set up system in aft port corner of main lab on the R/V Knorr.
In setting up the computer, Bob blew the fuse on the A/D board. He
replaced blown fuse with spare located on the board.
-30.0000 Water trap on equilibrator line filled with water. Began official data
collection at 23:27. Reset run number to 1.
-29.2035 Changed drying column.
-29.3215 Reset computer clock to match GPS.
-29.6875 Ship left the dock. Ken Johnson primary pCO2 analyst.
-28.6895 System water pump shut off...blown circuit breaker on lab plug.
-27.2708 System water pump back on...rerouted to another circuit.
-25.7500 Approximate time of system water pump shutdown due to blown circuit
breaker.
-24.2500 Replaced air pump.
-20.0000 Frequent system shutdowns due to bow pump failure (caused by heavy
seas).
-20.0000 Changed to data disk #2.
-19.0000 Changed drying tube.
-17.0000 Refit air pumps.
-11.3300 Seawater supply switched to secondary pumping system.
-10.2500 Ship's bow pump down. 110 power supply for system water pump fried.
-10.7833 Weather up- ship was hove to.
-7.4181 110 power supply for system water pump repaired by crew.
-1.0000 Changed to data disk #3. Changed drying column.
3.2000 Changed to reference tank AAL1791. Notes only stated day...time was
estimated by examining the data.
4.7715 Seawater pump down...blown circuit breaker
7.0000 Changed air pump.
11.7972 Circuit breaker blown again.
12.0000 Changed to data disk #4. Changed drying column.
15.1889 Water pump off again.
16.0000 Water meter not recording, but water still flowing OK. Changed air pump.
Section I9N
24.3333 System turned on as ship was leaving port. C. Sabine was primary
CO2 analyst. While in port, the equilibrator was taken
apart and cleaned. The shaft bearing on the left side of the
equilibrator was seized to the disk shaft. It was removed and cleaned
with steel wool before being replaced (no spare available). Both
teflon seals were replaced. Discovered that the circuit breaker
kept tripping on the previous cruise because both the disk motor
and the water pump were plugged into the same circuit. The two motors
together can draw 20 amps from the 15 amp circuit. The water pump was
rerouted to a new circuit. The equilibrator air pump was replaced. The
water trap on equilibrator air line was replaced with new model.
Cleaned air filter on line 5. Noticed that CO2 signal was
very noisy (± 0.01V). Discovered that noise went away if the
temperature controller was set to 33oC instead of
35oC. Standard and reference gas use was very high on
previous cruise, so the standard gas flow rates were adjusted down to
8-10 mm on the rotometer. The regulator on the 350 standard had
trouble maintaining a steady flow rate, so it was swapped with spare.
25.0833 Equilibrator air flow down to 1-2 L/min. Swapped air pumps...flow back
up to 7 L/min. Have had following wind since leaving port...using aft
intake.
27.0000 Wind has come around so it is no longer from behind (intake switched).
Marine air flow jumped from 1L/min to 8 L/min. Kevin Sullivan (watching
Weiss system) says Weiss flow is still OK.
32.1534 Changed perchlorate drying column just before calibration run.
32.3542 Discovered that marine air rotometer was stuck. After cleaning flow was
4 L/min.
33.0000 Marine air flow down to 1.5 L/min. Appears to be some moisture in
rotometer again.
34.2431 Bow pump shut off for ~5min. Did not notice whether any samples were
collected.
34.9167 Seawater shut off for 15-20 minutes.
34.9653 Seawater back on.
35.0076 Bow pump off...switched computer to run gas calibration
35.0139 Water pump back on.
35.1625 Changed data disk.
40.3993 Program paused to change reference tank to ALM008242 (on sta 192).
40.4313 Program started again.
40.5000 Paused program to change drying chemicals. Forced to rerun standards.
47.0000 Examined surface temperature with a bucket and thermometer. Bucket
temperatures were as much as 1.5 C warmer than CTD temps. I believe this
represents a real temperature gradient in the upper meter or so of the
water column while we are experiencing VERY calm, glass-like conditions
and bright sunny days.
47.9590 Changed data disk.
50.8611 System water pump quit and drained equilibrator.
50.8646 Water pump back on.
50.9076 Water pump quit again.
50.9306 Water pump on again.
51.8889 Water pump out 1-2 minutes.
51.1229 Water pump out 1-2 minutes. Believe pump brushes are worn out.
51.4028 Changed drying chemicals. Forced to run calibration.
53.2000 Started run East to Andaman Islands to drop off observers.
53.3958 Water pump swapped with spare while system was running standards. Checked
old motor and discovered centrifugal switch was warn out.
58.0000 Changed data disk.
59.1471 Stopped program and installed PCO2A3.BAS. This program reads the IMET
data in real time. While system was down, the drying chemicals were
changed and cleaned the equilibrator rotometer (6).
59.2134 System up and running again.
59.4316 Program crash due to garbage in IMET signal.
59.7271 Program crash.
59.8542 Program crash.
60.0604 Program crash...switched back to PCO2A2.BAS until error trap
can be written.
60.3104 Started PCO2A3.BAS
60.3403 Program crashed...fixed.
60.7674 Marine air pump replaced.
62.0104 Program crash.
62.4109 Program crash.
62.4894 Program crash.
63.3022 Bottom of drying column very wet. Stopped program and changed chemicals.
Nafion tube seems OK...must have been some plug of water blown through?
63.4295 Program crash.
64.1007 Shut water flow off. Running final standards.
64.1250 Program stopped.
Section I8N/I5E
69.5366 System started after Knorr's departure from Sri Lanka (G. McDonald in
charge).
70.3021 Noticed water in perchlorate drying column. Replaced Nafion tube, fixed a
clog in Ultra Torr tee on perchlorate column and changed drying chemicals.
71.0010 Marine air pump replaced.
71.1563 Detector voltage seemed "spiky" on standards, lowered rack temperature
controller to 32.5oC.
74.3021 Reset all flow rates based on standard tank pressure dropping. IMET data
flaky. System had to be restarted.
77.2500 Power shutdown in main lab...system off-line.
77.4167 System restarted after power was restored to lab.
78.0243 Marine air pump replaced.
82.0000 Post cruise analysis of data indicates that the time spent trying to
analyze the standards is starting to get significantly longer. The reason
for this is not known since Gerry did not notice this while the system was
running, but we suspect that the system got noisy again most likely due to
the continued degradation of the timing LED in the detector. The problem
does not seem to have affected the data quality, only the length of time
it takes the detector to stabilize and thus the quantity of data collected.
88.4500 Estimated time when reference tank was changed (Gerry's notes somewhat
ambiguous). New reference tank number ALM027282.
97.8681 Ship's bow pump down...rough weather.
97.8743 Bow pump running again.
101.0000 Equilibrator air supply low...adjusted back to proper setting.
103.3354 System locked up due to shutdown in IMET data, Rebooted computer at
103.4694.
104.7500 Ship's bow pump shut down upon approach into Fremantle.
Section I3
106.0000 Swapped detector for LiCor replacement. Broke rack temperature controller
PRT, replaced with spare.
113.0040 Departed Fremantle, Australia (R. Key running system).
113.6042 Reversed course for medical drop off.
114.0618 Rack temperature controller set temperature lowered from 32.5 to 30.5oC.
114.1562 Reversed course after medivac.
115.0833 Changed pump heads and changed drying column (started using Aquasorb in
drying column instead of Mg-perchlorate).
116.0784 Complete cleaning of equilibrator air lines up to Valco, clean pump, new
drying chemicals. Flow greatly improved.
118.0208 New drying column.
119.0001 Data transfer.
120.0799 New drying column.
122.1507 New drying column.
124.5986 New drying column.
126.6153 New drying column.
127.0146 Data transfer.
127.6674 New drying column.
129.7139 New drying column.
132.1500 Cleaned equilibrator pump.
132.3785 New drying column.
134.0604 Data transfer.
134.7882 New drying column (started using 1/2 Aquasorb and 1/2 Mg perchlorate in
drying column).
137.0000 Lost prime on bow pump several times for a few minutes- (.2882- .2910,
.4444-.4514, .4549-.4618, .6389-.6479, .7243-.7264)
139.0417 Lost prime on bow pump - restarted 139.0514.
139.7500 System crash due to IMET error - program restarted.
140.4319 System shutdown for 20 min. to check on axle squeak.
141.3549 New drying column.
144.2062 Changed reference tank to ALM14400.
145.4924 Bow pump off approaching Mauritius.
148.1771 Restart program departing Mauritius.
149.4604 Data transfer.
150.4882 New drying column.
151.2083 Swapped leaky reference gas regulator.
154.4465 New drying column.
156.0583 Seawater shut off for final approach to Mauritius.
Section I5W/I4
162.1900 Set sail from Mauritius.
164.2431 Changed drying column.
166.2882 Adjusted all reference and standard gas flows to get system in balance.
167.6321 Noticed some shredded PVC around axle seal - discovered that axle bushing
had seized to shaft and was rotating in PVC endplate. Shut system down and
took apart equilibrator. Had to get ship's engineers to remove bushing and
epoxy spare into endplate.
168.3875 System running again after equilibrator repairs.
168.4826 Data transfer.
168.7521 Changed drying column.
171.7236 Changed equilibrator air pump.
172.1475 Stopped system on approach to Durban.
173.3401 Restarted system after leaving Durban.
174.7500 Bow pump off for 9 minutes. Seas have been fairly heavy for several days.
175.1667 Bow pump off and on several times since first shutdown.
175.6236 Changed drying column. Made small adjustments to flow rates.
182.1972 Data transfer.
182.8472 Very rough seas (Swells 15-20'). Bow pump has been off and on. Decided to
just run air until things calm down a little.
183.5555 Weather has calmed down a little...bow pump back on line.
184.0000 Have been getting bow pump shutdowns while on station. Small water leak
through axle seal...adjusted equilibrator float switch down to lower water
level.
185.6667 Changed drying column and data transfer.
188.3757 Changed equilibrator air cadet.
190.4583 System crash due to IMET problems - rebooted. Data transfer.
191.9271 Bow pump shutdown for approach into Mauritius.
Section I7N
196.3125 Departed Mauritius (T. Zahn in charge).
200.6250 Changed drying column. Have had rough weather for past couple of days.
201.0000 Not getting proper sample flow through system ever since changing drying
column. Tried all day to find problem...finally discover that the drying
column was not being sealed with the O-ring.
203.0000 Data transfer.
205.1875 Bow pump shutdown for repairs...back on at 205.2417
206.4868 Changed to reference tank 24813 (note: this tank is a zero CO2
gas, started with only had 700 psi).
206.4868 System crashed...when rebooted system was told to run partial standards
(note: this option was not supposed to be used, but should not have a
noticeable affect on the calibration).
208.5625 Data transfer.
215.6944 Drying column changed.
217.6174 Data transfer.
219.1153 Changed partial standard collection off.
220.8472 Program crash...system rebooted.
221.0000 Bow pump off and on several times during day. Some water leaking through
teflon seals.
222.0000 Still having problems with bow pump.
226.0000 Bow pump shut off a couple times during the day...water leak getting worse.
227.3958 Changed reference tank to 18260 (a zero CO2 standard).
228.0000 Weather very rough...switched to secondary seawater pump 228.4236.
230.3813 Seas calmer...switched back to regular bow pump.
233.6285 Data transfer.
235.3979 Bow pump shut off for approach into Oman.
Section I1
241.4167 Ship sailed out of Oman (R. Rotter in charge). Equilibrator was taken apart
and cleaned. Shaft bushing was replaced and epoxied into endplate. Replaced
teflon seals and bypass chamber with spares. Equilibrator PRT and float
switch were broken in rebuild and had to be replaced with spares.
Collection software was replaced with newer version. Collection scheme was
basically the same as the original software, but version had slightly
different display and more error trapping.
241.9055 Data collection began.
243.5000 Wind and swells up - bow pump off and on.
243.8917 Drying column changed.
244.8403 Bow pump off. Resumed at 244.8458.
245.0000 Bow pump frequently shutting off all day.
245.6035 Stopped program temporarily to reset standard flow rates.
246.1632 Bow pump off. Resumed at 246.1764.
247.4938 Drying column changed. Data transferred.
248.0215 System set to run partial standards.
248.6618 Power outage - system reset
250.8000 Drying column changed.
251.7194 System reset so it would not run partial standards.
253.1806 System crash due to bad IMET data.
253.0000 Weather getting rough again water pump off and on all day.
253.9000 Drying column changed.
254.4708 Data transferred.
255.6479 Adjusted equilibrator air flow rate.
256.1167 Adjusted equilibrator and marine air flow rates.
256.9118 Drying column changed.
258.0417 System crash due to bad IMET data.
259.0660 System water pump off. Restarted several times, but ultimately had to
replace water pump motor with spare.
259.9410 Drying column changed.
260.6160 Data transferred, program restarted.
262.9420 Drying column changed.
263.5208 Marine air pump off. Replaced 263.5347
263.7083 Marine air pump off. Replaced 263.7291
264.0000 Weather very hot...noticed that box temperature frequently getting above
set temp.
265.5458 System crash due to bad IMET data.
266.7132 Drying column changed.
269.5174 System crash due to bad IMET data.
269.9999 Drying column changed.
271.0556 Bow pump off approaching Sri Lanka.
273.8597 System started after leaving Sri Lanka. Changed set point for rack
temperature controller from 30.5 to 31.5 since rack temp has been getting
above set point since day 264.
276.8667 Drying column changed.
278.6319 System crash due to bad IMET data.
279.9083 Drying column changed.
281.9736 Data transfer.
282.7840 Drying column changed.
285.4097 System Crash -unknown error.
285.4215 Diskette had bad sector...had to replace with new diskette. Reset system,
adjusted flows and changed drying column.
286.1215 Bow pump off as ship enters straits of Malacca. Restarted program without
IMET data and ran full standards.
286.4145 Shut down system. Discovered that hard disk was full from 10/7 to 10/13 -
Recovered data from floppies. IMET data recovered from ship's 1 minute
files.
Section I10
303-313 C. Sabine and G. McDonald cleaned bypass chamber and equilibrator. It was
reassembled with new teflon seals and cleaned bushing. Rebuilt seawater
pump...replaced old impeller and link belt. Replaced reference gas with
cylinder ALM061635 (new calibrated 200 ppm CO2 standard).
Transferred all data files off of hard disk. Adjusted zero setting on
detector to give 0.1V reading on reference gas. Adjusted rack temperature
controller back up to 35oC so it could properly maintain
temperature. System tested on transit from Singapore to Australia. Knorr's
ET was aboard making changes to IMET system, so pCO2 program
was modified compensate.
315.2943 System started after leaving Dampier, Australia (G. McDonald in charge).
316.0833 K. Sullivan adjusted main water flow for CFC syringe bath.
316.1388 Bow pump off and on 5 times over next 5 hours (choppy seas).
317.1056 Bow pump off and on 3 times over next 2 hours.
319.5243 System crash - system rebooted.
320.2208 Exited system to confirm data was being collected properly.
321.1097 Changed drying column.
322.2250 Transferred data.
323.2215 Noticed that CO2 concentration signal was noisy. Looked at long
term trends and determined that noise started around day 322.5. The noise
was due to erratic pressure readings because the 4 pin molex connector was
loose. Reconnected plug and signal returned to normal.
323.2674 Changed equilibrator air pump.
324.2260 Changed equilibrator air pump to a quieter one.
325.2180 Changed drying column.
329.0104 Bow pump shutdown entering Indonesian EEZ.
Section I2
339.2764 Data collection started after leaving Indonesian EEZ.
342.2319 System crash due to bad IMET data.
342.9861 System crash due to bad IMET data.
344.3833 Changed drying column.
346.9721 System crash due to bad IMET data.
348.4665 System crash due to bad IMET data.
350.8927 System crash due to bad IMET data.
352.9182 System crash due to bad IMET data. Data transferred.
354.9312 System crash due to bad IMET data.
359.0511 System crash due to bad IMET data.
361.5194 Bow pump shutdown entering Diego Garcia.
364.0000 Changed reference gas tank to ALM45918. Had trouble getting reference gas
flow down to correct rate (flow is 15 and should be 8-10).
364.3583 System restarted leaving Diego Garcia.
366.9705 System crash due to bad IMET data.
367.6049 Rebuilt needle valve controlling reference flow rate and finally got the
correct flow. Standard fits have not been very good for past few days
while reference flow was out of whack.
371.8229 System crash due to bad IMET data.
377.3785 Bow pump shutdown for 5 minutes.
377.6468 System crash due to bad IMET data. Readjusted gas flows.
378.6762 System crash due to bad IMET data.
380.6441 System crash due to bad IMET data.
383.6758 System crash due to bad IMET data.
386.6076 Final shutdown approaching Mombasa. Final water flow meter reading
1,146,780 gallons!
Last modified: 2021-03-17T18:30:27Z
