The Angel Reef CREWS given a basic maintenance service on 21st April 2014. No obvious physical damage was noted. Fouling was minimal and consisted of 3 barnacle spat. The wiper "garage" was replaced, and the coper coating on the CT probe. The failure of the Turbidity probe to pass the QC test remains unresolved (the same issue exist for BUTO1), even though it all seems right during the cal. Recommended action is a firmware upgrade.
Possible error with barometric readings. Pressure ranges from 1013-1015 millibar throughout the day. A 1millibar change suggest a 10m displacement.
Monday, May 5, 2014
Tuesday, March 25, 2014
Angel Reef (ARTO1) Scheduled CREWS Maintenance
The Angel Reef CREWS (ARTO1) was serviced on 20/03/2014 after
several months of basic maintenance. In January 2014 anomalous temperature and conductivity reading were detected and it was scheduled for maintenance in March 2014.
Pre-cal CTD
Depth: 1.11m
Temperature: 26.98
Conductivity: 55352
Salinity: 35.14
Little fouling was noted at this site. Mooring lines, the buoy and the hardware attached to the buoy remained intact and with no noticeable damage. Mooring lines and the buoy were fouled with few gooseneck barnacles, sessile barnacles and tufts of green filamentous algae. The anchors remained intact with no cracks or weaknesses noticed. The western most subsurface buoy has shifted up to the surface of the water, and will be adjust on next visit.
Little fouling was noted on the EXO2 and on the protective casing. Most of the copper coating surrounding the probes remained intact, but given the lenth of time since the last service they were changed. The probes were thoroughly cleaned of all barnacles, algae and other encrustations. All debris removed from the threading and krytox gel reapplied to all ports prior to reconnection to the base unit. On recalibration it was noted that the conductivity/temperature probe was faulty (during calibration it registered temperature of 1.xx e-9 and conductivity readings of 96500 in the conductivity standard) and has been replaced with a new probe. The faulty probe has been sent to YSI from examination. The new probe passed calibration process. A QC result was generated during the TSS calibration process for reasons undetermined. This also occurred during the first installation of the CREWS.
Pre-cal CTD
Depth: 1.11m
Temperature: 26.98
Conductivity: 55352
Salinity: 35.14
Little fouling was noted at this site. Mooring lines, the buoy and the hardware attached to the buoy remained intact and with no noticeable damage. Mooring lines and the buoy were fouled with few gooseneck barnacles, sessile barnacles and tufts of green filamentous algae. The anchors remained intact with no cracks or weaknesses noticed. The western most subsurface buoy has shifted up to the surface of the water, and will be adjust on next visit.
Little fouling was noted on the EXO2 and on the protective casing. Most of the copper coating surrounding the probes remained intact, but given the lenth of time since the last service they were changed. The probes were thoroughly cleaned of all barnacles, algae and other encrustations. All debris removed from the threading and krytox gel reapplied to all ports prior to reconnection to the base unit. On recalibration it was noted that the conductivity/temperature probe was faulty (during calibration it registered temperature of 1.xx e-9 and conductivity readings of 96500 in the conductivity standard) and has been replaced with a new probe. The faulty probe has been sent to YSI from examination. The new probe passed calibration process. A QC result was generated during the TSS calibration process for reasons undetermined. This also occurred during the first installation of the CREWS.
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| Exterior of base of sonde on removal from CREWS |
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| Exterior of top of sonde on removal from CREWS |
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| Inside of protective cover of sonde on removal from CREWS |
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| Some colonisation on sonde and state of sacrificial anode |
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| Still intact copper coating |
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| Some colonisers on cleaning brush and probes |
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| barnacle growing on cleaning brush |
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| Minor tear on copper coating |
Monday, November 25, 2013
Welcome to the Maintenance Log for the ARTO1 CREWS station!
This station was installed on November 25th, 2013. It is an anchored buoy located off the northeast coast of Tobago not far from Speyside, and is owned and operated by Caribbean Community Climate Change Centre (CCCCC or 5Cs) in collaboration with the Coral Reef Early Warning System (CREWS). CREWS handles the data stream and ecoforecasting for this station, and operates out of the National Oceanic and Atmospheric Administration's (NOAA's) Atlantic Oceanographic and Meteorological Laboratory (AOML).
We are informally referring to the buoy as ARTO1 (Angel's Reef, Tobago the 1st) although the National Weather Service in the US will also be giving it an all-numeric buoy designation.
For more information about CCCCC, please visit its website at this location: http://www.caribbeanclimate.bz/
The new buoy's exact coordinates are
We are informally referring to the buoy as ARTO1 (Angel's Reef, Tobago the 1st) although the National Weather Service in the US will also be giving it an all-numeric buoy designation.
For more information about CCCCC, please visit its website at this location: http://www.caribbeanclimate.bz/
The new buoy's exact coordinates are
N 11.301°
W 60.521°
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