Table of Contents

• Coverage
• Dataset Description
  • Methods & Sampling
  • Data Processing Description
• Data Files
• Supplemental Files
• Related Publications
• Parameters
• Instruments
• Deployments
• Project Information
• Funding

Samples for O2/Ar analyses were collected at three different depths within the mixed layer (5, 15, and 25 m) with 12-L Niskin® bottles attached to a CTD rosette. Seawater samples, collected in triplicate, were transferred to 12mL Labco Exetainer® screw cap vials with rubber septa. The vials were filled from the bottom using Tygon® tubing and allowed to overflow at least 3 times their volume. Samples were poisoned with 50 μL of saturated mercuric chloride solution and stored in the dark immersed in water at 4°C until analysis on board, within 2 days of collection.

Dissolved O2/Ar was measured in discrete water samples using membrane inlet mass spectrometry as described by Ferrón et al. (2015).

Membrane inlet mass spectrometer consists of a Pfeiffer Vacuum HiCube 80 Eco turbo pumping station connected to a HiQuayTM quadrupole mass spectrometer (QMG700), with a Balzers radio frequency generator (QMH 400-5) and a Balzers analyzer (QMA 430). The membrane inlet design is from Bay Instruments (Easton, Maryland).

BCO-DMO Processing Notes:
* Adjusted column names to comply with database requirements
* Added ISO8601 format of date and times

NSF Award Abstract:

Intellectual Merit
The PIs request funds to provide training in leading and organizing research cruises to early career researchers in the areas of Biological and Chemical Oceanography. Participants in this training program would be introduced to pre-cruise planning and logistics, receive training in commonly used oceanographic sampling equipment, and conduct shipboard measurements during a 10-day oceanographic cruise to the North Pacific Subtropical Gyre (NPSG). The goal of this training program is to prepare early career scientists for leading and participating in interdisciplinary oceanographic research at sea.

Broader Impacts
The proposed program addresses the broader impacts criteria successfully. The research cruise and follow-up reports and publications focus on interdisciplinary questions important for advancing the field. Given the rapid changes that oceanic systems are undergoing, it is important to have a cadre of junior scientists who are adept at managing interdisciplinary collaborations and conducting research at sea. The PIs are considering ways to connect with diverse audiences in recruiting participants. The impact on early career oceanographers will be very strong. This will create an experience that will be a major impact on the careers of the trainees, especially if they stay in the oceanography field.