| CTD Processing Summary CalCOFI 0808NH CTD Final Data (reprocessed/reformatted 08/2018) | |||||||||||||||||||||
| Download 0808NH CTD raw cast files zipped | Download 0808NH FinalQC CTD + bottle data | ||||||||||||||||||||
| General CTD Notes - data acquisition cast notes, logistics, processing notes are listed below | |||||||||||||||||||||
| CTD sensor corrections derived by comparing 4 secs of CTD sensor data (prior to bottle closure) to bottle samples | |||||||||||||||||||||
| Dual T & S | Primary Sensor | Secondary Sensor | |||||||||||||||||||
| Temperature, dual SBE3 | No offset or correction | No offset or correction | |||||||||||||||||||
| Salinity offset (bottle - CTD salinity; > 350m only; Seabird SBE4; fliers excluded) | 0.0015 | 0.0005 | |||||||||||||||||||
| Single sensors - note only one CTD O2 sensor ml/L uM/Kg | |||||||||||||||||||||
| Oxygen (ml/L & uM/Kg; single Seabird SBE43) |
y = 1.0147x - 0.0269 R² = 0.9998 |
y = 1.0147x - 1.17 R² = 0.9998 |
|||||||||||||||||||
| Nitrate - Satlantic MBARI-ISUS (SN 111) |
y = 31.365x - 4.3094 R² = 0.9888 |
||||||||||||||||||||
| Seapoint Fluorometer - linear & polynomial regressions |
y = 2.8655x - 0.0503 R² = 0.6624 |
y = -0.2902x2 + 3.1225x - 0.0717 R² = 0.6641 |
|||||||||||||||||||
 |
 |
||||||||||||||||||||
 |
 |
||||||||||||||||||||
|
General notes: Station Pattern & Cruise Track
|
|||||||||||||||||||||
CalCOFI 00808NH • 14 - 30 Aug 2008 • SIO RV New Horizon • San Diego to San DiegoCruise and CTD Data Processing Notes CalCOFI 0808NH on SIO RV New Horizon successfully occupied 69 of 75 scheduled stations. RV New Horizon sailed to from sta 90.45 to the Dana Point prodo station 90.28. After SCCOOS 90.0 27.7, we worked our way west back out to 90.37 before heading north to line 86.7. Due to a lack of shiptime six SCCOOS stations, 88.5 31.4, 86.8 32.5, 85.4 35.8, 83.3 39.4, 81.7 43.5, 80.0 50.5 were dropped.
Seabird 911+ configuration:
Logistics: We completed (all) 66 standard stations and only 3 of 9 SCCOOS stations before transiting home to offload in San Diego. |
|||||||||||||||||||||
|
CalCOFI 0808NH CTD Data Processing & Console Ops Notes Removed salt fliers on both primary & secondary comparisons. No deep CTD casts (>515m) were performed this cruise
Only one O2 sensor was deployed, no ISUS, no Surface PAR, no pH. These were purchased in mid-2009 and first deployed on CalCOFI 0907M2 when a new 911+ system was bought. Scientific Report for SIO Weekly Log: Briefly, hydrographic data indicates distinctly a strong California Current (CC) as indicated by surface temp (-1 to -1.8) and salinity (-0.1 to - 0.35) anomalies and the location is confirmed by 100m Temp. The CC is strongest 200 to 300 miles off the coast from Pt. Conception and San Diego respectively. The flow is potentially divided into two bands or a filament jetting toward the coast outside the Channel Islands. Zooplankton tows have been reported to be about average with higher than average amounts of phytoplankton (as determined by color and consistency) in the area of the California Current. The Davidson counter current also appears anomalously strong with 10m Temp of +2 deg C common both within 20-40 miles of the coast of San Diego and between 100 and 160 miles off. This warm water appears to be a lack of upwelling as seen by the prevalent -0.2 salinity anomalies at 10 meter and is seen over a wide area the Southern California Bight I have personal knowledge of a strong migration of pelagic fishes in those areas this year. Chlorophyll values very near shore off San Diego are 5-6 ug/liter and the highest seen so far including stations near L.A., Santa Barbara and Pt. Conception which were 2-3 ug/liter at the highest. Original hdr file requiring correction - cast 061 was mislabeled Cruise NH0808 so was edited 0808.: CalCOFI 0808NH CTD Cast & Data Processing NotesOverall, the majority of issues with sensor data was with the ISUS Nitrate sensor. Powering the sensor requires connecting a 12v external battery pack. At this time, CalCOFI was using a battery pack for three casts (~3hrs) then replacing the pack with a fresh pack. There were also some cabling issue that was resolved early in the cruise by replacing a faulty battery cable. Casts with no ISUS data: 005U, 007UD, 009UD, 010UD, 011UD, 012UD, 013U, 016U, 024UD, 030UD, 034UD, 035U, 054U Casts with partial ISUS profile data: 005D, 013D, 016D, 020UD, 024D, 035D, 054D Dave Munro was conducting a productivity experiment which required additional seawater so extra surface or 10m bottles were closed on many casts this cruise. Cast 001: bottle #9 mistripped, no sample Cast 002: extra bottles tripped at surface to test carousel and mistrip #9 from last station Cast 004: bottle #9 did not close again Cast 005: trigger #9 replaced; ISUS stopped logging on downcast ~490m, no upcast ISUS data Cast 009: no ISUS data, battery? Cast 010: new battery but still no ISUS data - bad cable? Casts 011-012: still no ISUS data, plugged in Cast 013: new ISUS battery, work on downcast to 310m, nothing deeper or on upcast Cast 014-015: ISUS worked down & upcast Cast 016: ISUS worked on downcast to 230m Casts 017-019: ISUS worked fine Cast 019: salinity differs a bit on upcast from downcast Cast 020: ISUS worked on downcast to 385m, & on upcast 222m-0m Casts 021-023: ISUS worked fine Cast 024: ISUS worked on downcast to 484m, no upcast data Casts 025-029: ISUS worked okay Cast 030: no ISUS data Cast 031: do over, odd message "FFFFFFF unsupported modem message" in file acquisition box; first cast to ~280m then back to surface and restarted, resent to 515m without issue; ISUS worked fine Casts 032-033: ISUS worked fine Cast 034: Santa Monica Basin station; battery dead, no ISUS data Cast 035: ISUS data on downcast to 75m Cast 036: Rosette frame cracked post-cast (while on deck); ISUS okay Casts 037-038: ISUS looks okay Cast 038: lanyard #21 broke, possible mistrip at 8m, 23 bottle prodo cast Casts 039-040: ISUS okay; rough seas Cast 041: salinity inversion noted; O2 lower at surface than 50m; ISUS okay Casts 042-043: ISUS good, battery swapping working better Cast 044: didn't start archiving, brought back to surface then data archiving started Cast 045: ISUS Okay Casts 046-047: bottle #10 mistripping, lowered bottle and shortened lanyard after cast 047 Cast 048: ISUS okay Cast 049: CTD yo-yo'd @120m, went back to 140m for mkr Cast 050: bottle #10 seems okay now Cast 051-053: ISUS okay Cast 054: Santa Barbara Basin station, ISUS on downcast to 543m, but lost the rest Casts 055-064: ISUS okay, moderate-heavy seas Cast 065: ISUS okay; big rolls, slow cast with some pauses on up & downcast for big swells Cast 066-069: ISUS okay Note: continual problems with powering the ISUS resulted in a new protocol. The ISUS battery was charged after every deep cast without removing it from the rosette. A long charging cable was rigged so it was not necessary to swap the heavy batteries. Occasional venting of charging gases were necessary by unplugging the battery case at least once a day. JRW 08/28/2018 |
|||||||||||||||||||||
