Summary of preliminary findings and benefits of DBO sampling at the pilot sites

• DBO concept can work: 6 cruises by 4 nations in 2010 and 2011
• Repeat hydrography is successfully capturing seasonal variation of the Pacific Water
• Immediate data sharing advantageous
• Information can help interpretation of individual studies by providing a temporal context
  DBO: High resolution measurements, both vertically and horizontally
• Provides essential Information of 0-30m region not captured by moorings
• Lower trophic taxa data (phytoplankton, zooplankton and benthos) shared amongst DBO cruises can be analyzed first-order via simple cluster analysis
• DBO can be used to look at temporal variation in biological parameters, latitudinal variation (time and space scales)
  variation between labs
• Seasonal variation of heat content and heat flux is large.
• Fresh water highest flux from July to September
• Moorings: also important for seasonal variation (including winter), Long term monitoring
• Satellites needed for overview of whole Chukchi Sea

Summary of the challenges of the DBO effort, including scales, data management, and funding

• Requires coordination and commitment
• Need for spatial resolution of water sample variables (ideally more nutrients than just nitrate)
• Recognition that different sampling scales are needed for physics, hydrography, plankton and benthic sampling
• Data quality and processing time are issues
• Need more post-cruise analysis sorting time for biological data
• Standardization of gear and analytical capability
• collection of standard parameters sites on a regular basis
• dedicated national funding for incremental shiptime, data processing and analysis