Salisbury, Joe: UNH (Project Lead)
Project Funding:
2008 - 2011
NRA: 2007 NASA: Carbon Cycle Science
Funded by NASA
Abstract:
Net community production (NCP), defined as gross primary productivity minus net community respiration, is an important measure of the biological pump as it provides information on the status of net carbon sequestration and the availability of carbon for export and trophic exchange. We propose to estimate NCP by tracking the localized, depth-integrated particulate organic carbon (POC) stock that has been produced or respired in situ. We will use the velocity fields from ocean circulation models to advect Lagrangian particles and consequently trace water parcels. This, in turn, allows monitoring and tracking the temporal evolution of satellite retrievals (e.g. POC) in the moving frame of water parcels. Depth-integrated POC will be derived from NASA MODIS data and several different empirical and semi-analytical models. Changes in the local POC stock will be related to corresponding changes in biologically mediated dissolved inorganic carbon (DIC) and pCO2. Data from NASA’s SeaWinds sensor will be used to resolve air-sea carbon exchange necessary in accounting for DIC measured in situ. This will enable estimating the biologically mediated DIC and will serve as validation for the satellite-based estimates. Our methodology will be applied globally, extending outward from continental shelves, which will form the focal point for this study. A synoptic picture of ocean basin-wide NCP and POC export from continental shelves will be constructed to gain an understanding of the role of continental shelves in the global carbon cycle. In this proposal, we demonstrate the described methodology for a single region, the Gulf of Maine; from here it will be extended to other data rich regions around the globe. Our work will be thoroughly validated using the UNH Coastal Observatory and Analysis database, the Gulf of Maine Ocean Observing System buoy array and later from coastal ocean observing systems around the world.
2008 NASA Carbon Cycle & Ecosystems Joint Science Workshop Posters
- Carbon cycle research in the coastal Gulf of Maine: ship observations, satellite data and circulation modeling
-- (Joe Salisbury, Doug Vandemark, Chris Hunt, Janet Campbell, Amala Mahadevan, Bror Jonsson, Huijie Xue)
[abstract]
- CDOM during the Gulf of Mexico - East Coast Carbon (GOMECC) Cruise: Using Spectra for Remote Photochemical Estimates
-- (Heather E. Reader, William L. Miller, Joe Salisbury, Jennifer St. Louis, Amanda Plagge)
[abstract]
More details may be found in the following project profile(s):
