Award Abstract # 9903391
Determination of the Redfield Remineralization Ratios Based on Neutral Surface Analysis of the New Global Data Set

NSF Org: OCE
Division Of Ocean Sciences
Recipient: OREGON STATE UNIVERSITY
Initial Amendment Date: July 23, 1999
Latest Amendment Date: July 23, 1999
Award Number: 9903391
Award Instrument: Standard Grant
Program Manager: Donald L. Rice
OCE
 Division Of Ocean Sciences
GEO
 Directorate For Geosciences
Start Date: June 1, 1999
End Date: May 31, 2003 (Estimated)
Total Intended Award Amount: $229,949.00
Total Awarded Amount to Date: $229,949.00
Funds Obligated to Date: FY 1999 = $229,949.00
History of Investigator:
  • Louis Gordon (Principal Investigator)
    lgordon@oce.orst.edu
Recipient Sponsored Research Office: Oregon State University
1500 SW JEFFERSON AVE
CORVALLIS
OR  US  97331-8655
(541)737-4933
Sponsor Congressional District: 04
Primary Place of Performance: Oregon State University
1500 SW JEFFERSON AVE
CORVALLIS
OR  US  97331-8655
Primary Place of Performance
Congressional District:
04
Unique Entity Identifier (UEI): MZ4DYXE1SL98
Parent UEI:
NSF Program(s): BIOLOGICAL OCEANOGRAPHY,
Chemical Oceanography
Primary Program Source:
Program Reference Code(s): 1315, 4444, EGCH
Program Element Code(s): 165000, 167000
Award Agency Code: 4900
Fund Agency Code: 4900
Assistance Listing Number(s): 47.050

ABSTRACT

ABSTRACT

OCE-9819144 / OCE-9903391


In this study, investigators from Princeton University and Oregon State University will use the new, high-quality nutrient data set obtained during NOAA-OACES and WOCE field studies to refine estimates of the relative amounts of phosphorous, nitrogen, and carbon generated during the decomposition, or remineralization, of marine organic matter - the so-called Redfield Ratio (P:N:C). The Redfield Ratio is not a new concept; in fact, it has been used, and its approximate value has been known, for decades. Ocean scientists have relied on estimates of the Ratio to calculate a values of a variety of unmeasured biogeochemical values from the values of ones that have been measured. Analysis of the high-quality nutrient data sets generated in recent years demands that the Redfield estimate be improved, and this is what this team of investigators intends to do. An optimal multi-parameter technique will also be developed to determine ratio endpoints for application to modeling of biogeochemical data collected during the Joint Global Ocean Flux Study (JGOFS) as well as from OACES and WOCE. The technique will be applied to twenty neutral-density layers in each ocean basin to achieve some idea of the global variability as well as a global averaged Redfield value.

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