U.S. JGOFS SMP

U.S. JGOFS Synthesis & Modeling Project
Marjorie Friedrichs Co-Investigators: Eileen Hofmann Rob Armstrong Kevin Arrigo Fei Chai Jim Christian Scott Doney David Glover Raleigh Hood John Klinck Jay McCreary Dennis McGillicuddy Ragu Murtugudde Jerry Wiggert
Regional ecosystem model testbeds. A JGOFS synthesis and modeling project. NSF
PROJECT DESCRIPTION:	An important legacy of the U.S. Joint Global Ocean Flux Study (JGOFS) Synthesis and Modeling Project (SMP) will be the formulation of a broad suite of models designed to simulate biogeochemical cycling at the various process study sites. Although this set of models and modeling studies has already substantially advanced our understanding of these systems, few quantitative intercomparisons of these models have been made. We propose to conduct these intercomparisons, in order to critically examine which ecosystem structures and formulations are most robust, and to investigate and explore the reasons for their success. Furthermore, we will critically evaluate the feasibility of developing biogeochemical models that are applicable over a wide range of diverse ecosystems. The main objectives of the proposed work are: to add to the mechanistic understanding of how and why euphotic zone production, and the associated export of carbon, vary among diverse oceanographic regions, and to accelerate the development of mechanistically-based ecosystem models that are capable of simultaneously describing the primary biogeochemical features of multiple oceanographic regimes. In order to accomplish these goals, and to provide a forum for testing and comparing various ecosystem models, we propose to develop a series of "regional testbeds," based on the high quality and large quantity of observations available from the Arabian Sea Process Study (ASPS), the Antarctic Environment and Southern Ocean Process Study (AESOPS), the Equatorial Pacific Process Study (EqPac), the second iron enrichment experiment (IronExII), the Bermuda Atlantic Time-Series Study (BATS), and the Hawaii Ocean Time-series (HOT) Websites will be constructed for all testbeds and will include access to the physical fields required to force the models, as well as time-series of biogeochemical data that will be used for either evaluation or optimization/a ssimilation. These websites will be available as a community resource, and, in this study, will be used to facilitate both intra-site and inter-site model comparisons. This proposed research will capitalize on work previously accomplished under the JGOFS SMP: the twelve co-investigators involved in this project will freely provide their regional expertise, model code, forcing fields, and biogeochemical data sets to this project. To further promote model intercomparisons, this project will involve annual hands-on workshops in which scientists (including but not limited to the co-investigators of this proposal) will work together to quantitatively assess a number of different biogeochemical models and modeling approaches. Through these intercomparison exercises and carefully designed simulations, the improvement of biogeochemical models will be accelerated, and the scientific community will be significantly closer to having a set of rigorously tested models that can be used for ocean carbon cycle prediction.
DATA:	- no data submitted -
PUBLICATIONS:	- no publications listed -
RELATED PROJECTS:	Arrigo; Robinson "A coupled ice-ocean model of mesoscale physical/biological interactions in the Ross Sea" Barber; Chai; Dugdale; Wilkerson; Peng " New and export productivity regulation by Si and Fe in the equatorial Pacific Ocean" Capone; Carpenter; Hood "Modeling of N2 and CO2 fixation by the oceanic diazotroph Trichodesmium" Christian; Letelier "Modeling microbial processes and dissolved organic matter: a case study at the US-JGOFS time series Station ALOHA" Doney "The impact of interannual variability on air-sea CO2 fluxes and oceanic dissolved inorganic carbon fields" Glover; Conte "A coupled epipelagic-meso/bathypelagic particle flux model for the Bermuda Atlantic Time-series Station (BATS)/Oceanic Flux Program (OFP) Site" Hofmann "Evaluation of marine primary productivity in the tropical Pacific and Atlantic Oceans using satellite ocean color and numerical models" Hofmann; Klinck; Walker Smith; Prézelin "Comparative modeling and data analysis studies for the Ross Sea and West Antarctic Peninsula regions: A JGOFS synthesis and modeling project" Hood; McCreary; Smith; Olson "Development, validation and improvement of a coupled biological/chemical/physical model for the Arabian Sea" Landry; Armstrong; Steele "Data-based models of plankton community structure and export flux" McClain; Koblinsky; Lewis; Murtugudde; Asanuma; Busalacchi "Physical-biological interactions in the tropical Pacific and Atlantic equatorial surface layers" McGillicuddy "The role of eddies in basin-scale biogeochemical budgets of the North Atlantic" McGillicuddy "Modeling mesoscale biogeochemical processes in a TOPEX/POSEIDON diamond surrounding the U.S.JGOFS Bermuda Atlantic Time Series" McGillicuddy "Impacts of mesoscale processes on biogeochemical fluxes in the North Atlantic: Basins-scale eddy-resolving simulations" Najjar; Doney; Key; Sabine; Sarmiento; Caldeira "Evaluation and intercomparison of three-dimensional marine carbon cycle models"
INVESTIGATOR INFORMATION:	Marjorie Friedrichs Center for Coastal Physical Oceanography Old Dominion University Crittenton Hall 768 West 52nd Street Norfolk, VA 23529 tel: 804-683-3234 fax: 804-683-5550 marjy@ccpo.odu.edu http://www.ccpo.odu.edu:80/Facstaff/students/marjy.html Eileen Hofmann Center for Coastal Phys. Oceanogr. Crittenton Hall Old Dominion University 768 West 52nd Street Norfolk, VA 23529 tel: 757-683-5334 fax: 57-683-5550 hofmann@ccpo.odu.edu http://www.ccpo.odu.edu:80/Facstaff/faculty/hofmann.html Rob Armstrong Marine Sciences Research Center State University of New York Stony Brook, NY 11794-5000 tel: 631-632-3088 fax: 631-632-8820 rarmstrong@notes.cc.sunysb.edu Kevin Arrigo Department of Geophysics Mitchell Building, Room 360 Stanford University Stanford, CA 94305-2115 tel: 650-723-3599 fax: 650-725-7344 arrigo@pangea.stanford.edu http://pangea.stanford.edu/~arrigo Fei Chai School of Marine Sciences 5741 Libby Hall University of Maine Orono, ME 04469-5741 tel: 207-581-4317 fax: 207-581-4388 fchai@maine.edu http://www.ume.maine.edu/~marine/chai.htm Jim Christian Universities Space Research Association NASA Goddard Space Flight Ctr Code 970.2 Greenbelt, MD 20771 tel: 301-286-9911 fax: 301-286-0268 jrc@bluefin.gsfc.nasa.gov http://bluefin.gsfc.nasa.gov/~jrc/ Scott Doney Oceanography Section National Center for Atmospheric Research P.O. Box 3000 Boulder, CO 80307-3000 tel: 303-497-1639 fax: 303-497-1700 doney@ncar.ucar.edu http://goldhill.cgd.ucar.edu/oce/doney/doney.html David Glover Marine Chemistry and Geochemistry Woods Hole Oceanographic Institution Mail Stop #25 Woods Hole, MA 02543-1541 tel: 508-289-2656 fax: 508-457-2193 dglover@whoi.edu http://w3eos.whoi.edu/~david/dglover.html Raleigh Hood Horn Point Environmental Laboratory 2020 Horns Point Rd P.O. Box 775 Cambridge, MD 21613 tel: 410-221-8434/8497 fax: 410-221-8490 raleigh@hpl.umces.edu http://www.hpl.umces.edu/faculty/hood.html John Klinck CCPO, Crittenton Hall Old Dominion University 768 West 52nd Street Norfolk, VA 23529 tel: 757-683-6005 fax: 757-683-5550 klinck@ccpo.odu.edu http://www.ccpo.odu.edu:80/Facstaff/faculty/klinck.html Jay McCreary IPRC/SOEST University of Hawaii 2525 Correa Rd. Honolulu, Hawaii 96822 tel: 808-956-2216 fax: 808-956-9425 jay@soest.hawaii.edu http://iprc.soest.hawaii.edu/people/mccreary.html Dennis McGillicuddy Dept of Applied Ocean Physics and Engineering Woods Hole Oceanographic Institution 98 Water Street, MS#12 Woods Hole, MA 02543 tel: 508-289-2683 fax: 508-457-2194 dmcgillicuddy@whoi.edu http://www.whoi.edu/science/AOPE/cofdl/staff_desc.html#DJM Ragu Murtugudde Code 970/Bldg 33 NASA/GSFC Greenbelt, MD 20771 tel: 301-614-5667 fax: 301-614-5666 ragu@seetha.gsfc.nasa.gov http://amarone.gsfc.nasa.gov/ragu.html Jerry Wiggert Earth System Science Interdisciplinary Center University of Maryland CSS-2207 College Park, MD 20742-2465 tel: 301-405-4971 fax: 301-405-8468 jwiggert@essic.umd.edu