Introduction
Contents
2. Introduction¶
This standard operating procedure (SOP) document for chlorophyll a aims to guide the user through the steps necessary to collect good quality data using ocean gliders for both real time and post deployment data streams.
2.1. Overview cheat sheet¶
The most important actions to be taken are summarized in this simple cheat sheet below. This short summary allows the reader check under time pressure whether key points are taken into account prior to deployment. We recommend reading each chapter in detail to ensure the best quality data.
Pre-deployment/Deployment
(1) Check that sensors are in good condition, and you have selected the best option for the planned mission.
- BEST: Do two-point calibration (Section 4.4.1).
(2) Mount the sensor(s) (Section 3).
(3) Configure sensor for deployment (Section 4.2). Make sure your glider is configured to record phase with correct timings.
(4) Dark count assessment in the workshop?
(5) In-situ reference measurements, recommended using hierarchy of decreasing quality
- BEST: Optodes attached to a CTD (Section 5.4).
- BEST: multiple co-located CTD casts.
- GOOD: ??
- OK: ??
Mission and Real Time data flow (Section 5)
(6) Ensure data stream is set up correctly including relevant metadata is sent to allow real time data corrections (Section 6).
Recovery (Section 7)
(7) Keep sensor ON outside the water to assess any issues related to being in water.
(8) Download data.
(9) In-situ reference measurements, using hierarchy of decreasing quality as mentioned above.
(10) Clean and store the sensor.
DMQC (Section 8)
(11) Determine and correct dark count and scale factor.
Data sharing (Section 9)
(12) Share high quality data in public open access archives.
…..??
2.2. Overview sensor glider combinations¶
Table 1: List of the known sensor/glider combinations. We aim to cover all combinations in this document.
Sensor / Glider |
Slocum |
Autosub/ ALR (NOC) |
Seaglider |
Deepglider |
SeaExplorer |
Spray |
Information |
|---|---|---|---|---|---|---|---|
SFC - Seapoint |
X |
||||||
RBR Tridente |
X |
||||||
WetLabs ECOPuck (FLBBCD, FLBBPC, FLNTU, FLBBPE) |
X |
X |
X |
||||
Seabird SeaOWL |
X |
X |
|||||
TriOS Nanoflu |
X |