1. Biogeochemistry: Further general thoughts
CO2 observations
Strong history in the Western Pacific
Current mooring spacing could capture variability
Need to understand the agencies’ interest in deployments
Will likely lead to prioritizing and JAMSTEC analysis helps
Where will sensors be purchased?
Data QC and dissemination systems exist but may need discussions regarding data sharing
Must maintain underway measurements on ships
All of TPOS, not just the west. Saildrone emerging

2. Biogeochemistry: Further general thoughts
O2 observations
Sensors on moorings useful but vertical resolution difficult
Particularly true in the east
Exception: Prawler, high vertical/temporal resolution
Additions to Argo seem most likely to provide benefit
Requires international coordination
Data processing implications but improving
Budget implications
Continued, possibly understandable resistance
Needs further analysis to target deployments

3. Data from World Ocean Atlas
Oxygen Minimum Zones
hypoxia
Data from World Ocean Atlas

4. Biogeochemistry: Further general thoughts
O2 observations
Sensors on moorings useful but vertical resolution difficult
Particularly true in the east
Exception: Prawler, high vertical/temporal resolution
Additions to Argo seem most likely to provide benefit
Requires international coordination
Data processing implications but improving
Budget implications
Continued, possibly understandable resistance
Needs further analysis to target deployments

5. Biogeochemistry: Further general thoughts
Nutrient observations
Strong history in the Western Pacific
Continued observations on ships are important because they provide the full suite (N, P, Si)
Only real option for automated observations is NO3
Moorings, Argo, (surface drifters, Saildrone?)
Similar issues for O2 and NO3 on Argo, but worse
Seriously consider a sub-subset of NO3 Argo

6. 108 floats as of 1-Jun-2016. Red : NO3 and O2
108 floats as of 1-Jun Red : NO3 and O2. Yellow : biooptics, NO3 and O2.

7. Biogeochemistry: Further general thoughts
Satellite ocean color
TPOS supports continued missions
Western Pacific challenging for high temporal resolution
Geostationary promising: GOCI I and II
Last decade has seen a transition from NASA to global
Merging missions strengthens the value of the data set
Requires cooperation across agencies

8. Biogeochemistry: Further general thoughts
Ecosystems: Corals and fisheries
Corals
Dual threats from bleaching (warming) and acidification
Warming well captured by satellites and moorings
Acidification requires pCO2 but also DIC or direct pH
Choose some long term monitoring sites
Fisheries
Fisheries requirements in their infancy in TPOS
Possibly best left to national agencies to make use of the TPOS backbone

9. Main messages from BGC Task Team
BGC on Argo
Need to start coordinating to achieve this
How many?
Where?
How to fund?
CO2 on moorings and underway
Identify priority areas
Understand agencies’ interest
Nutrients on ships
Encourage and help data availability, analysis