Cruise Report for the 2021 Reoccupation of A22

Table of Contents

• GO-SHIP A22 2021 Hydrographic Program
  • Cruise Scientific Objectives
  • Programs and Principal Investigators
  • Science Team and Responsibilities
• Cruise Narrative
  • Principal Finding and Features
• CTD and Rosette Setup
  • Underwater Sampling Package
  • Winch and Deployment
  • Maintenance and Calibrations
  • Logs
  • Sensor Problems
• CTDO and Hydrographic Analysis
  • CTDO and Bottle Data Acquisition
  • CTDO Data Processing
  • Pressure Analysis
  • Temperature Analysis
  • Conductivity Analysis
  • CTD Dissolved Oxygen (SBE43)
  • CTD Dissolved Oxygen (RINKO)
• Salinity
  • Equipment and Techniques
  • Sampling and Data Processing
  • Narrative
• Nutrients
  • Summary of Analysis
  • Equipment and Techniques
  • Nitrate/Nitrite Analysis
  • Phosphate Analysis
  • Silicate Analysis
  • Sampling
  • Data Collection and Processing
  • Standards and Glassware Calibration
  • Quality Control
  • Analytical Problems
• Oxygen Analysis
  • Equipment and Techniques
  • Sampling and Data Processing
  • Volumetric Calibration
  • Standards
  • Narrative
• Total Alkalinity
  • Total Alkalinity
  • Total Alkalinity Measurement System
  • Sample Collection
  • Problems and Troubleshooting
  • Quality Control
• Dissolved Inorganic Carbon (DIC)
  • Sample Collection
  • Equipment
  • DIC Analysis
  • DIC Calculation
  • Calibration, Accuracy, and Precision
  • Instrument Repairs
  • Summary
• Discrete pH Analyses (Total Scale)
  • Sampling
  • Analysis
  • Reagents
  • Data Processing
  • Problems and Troubleshooting
  • Standardization/Results
• CFC, SF₆, and N₂O
  • Analytical Difficulties/Acknowledgements
• Dissolved Organic Carbon and Total Dissolved Nitrogen
  • Project Goals
  • Sampling
  • Standard Operating Procedure for DOC analyses – Carlson Lab UCSB
  • Standard Operating Procedure for TDN analyses – Carlson Lab UCSB
• Carbon Isotopes in Seawater (14/13C)
• LADCP
  • Data Acquisition and QC
  • Instrumentation
  • Figures
• Discrete pCO₂
  • Sampling
  • Analyzer Description
• Underway pCO₂
• Float Deployments
  • WHOI Core Argo Floats
  • Argo Canada
  • GO-BGC Argo Floats
  • RAFOS Float
• Sofar Spotter Drifter Deployments
• Chipods
  • Overview
  • System Configuration and Sampling
• Underwater Vision Profiler 5 HD (UVP)
  • System Configuration and Sampling
  • General Particle Patterns
  • Future Data Analysis
  • Problems
  • Figures
• Sargassum
  • Overview
  • Procedure
• Nitrate Isotopes ¹⁵N AND ¹⁸O
  • Analysis
• INT (Microbial Respiration)
  • Motivation
  • Sampling
• Oxygen Stable Isotope Record (¹⁸O)
  • Intent
  • Sampling
  • Processing
  • Acknowledgements
• Student Statements
  • Lillian Henderson
  • Holly Olivarez
  • Maya Prabhakar
  • Victoria Schoenwald
  • Ali Siddiqui

Appendicies

• Abbreviations
• Bottle Quality Comments
• Calibration Documents