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Author (up) Samuelsen, A
Title Modeling the Effect of Eddies and Advection on the Lower Trophic Ecosystem in the Northeast Tropical Pacific Type $loc['typeManuscript']
Year 2005 Publication Abbreviated Journal
Volume Issue Pages
Keywords Physical-Biological Interactions, Marine Ecosystem Modeling, Pacific Ocean, Gulf Of Tehuantepec, Costa Rica Dome, Cross-Shelf Transport, Eddies
Abstract A medium complexity, nitrogen-based ecosystem model is developed in order to simulate the ecosystem in the northeast tropical Pacific. Several physical processes have major impact on the ecosystem in this region, most importantly intense wind jets along the coast and upwelling at the Costa Rica Dome (CRD). The ecosystem model is run “offline”, using a realistic physical ocean model hindcast as input. The physical model is a subdomain of the global Navy Coastal Ocean Model, which is a hybrid sigma-z level model. The model assimilates Modular Ocean Data Assimilation System temperature and salinity profiles derived from altimetry and sea surface temperature data. The model is forced by daily heat and momentum fluxes, and therefore captures short-term wind events such as the Tehuantepec jet. Because the model has high horizontal resolution (~1/8 degree) and assimilates sea surface height data, it has a realistic representation of eddies and mesoscale variability. The ecosystem model includes two nutrients (nitrate and ammonium), two size-classes of phytoplankton, two size-classes of zooplankton, and detritus. The model is run for 4 years from 1999 to 2002, with analyses focused on 2000-2002. The model is validated using SeaWiFS data and ship-based observations from the STAR-cruises (Stenella Abundance Research Project) of 1999 and 2000. The northernmost and most intense of the wind jets along Central America is the Tehuantepec jet. The Tehuantepec jet is responsible for upwelling large amounts of nutrient rich water south of the Gulf of Tehuantepec. The jet also occasionally produce large anti-cyclonic eddies that transport organic matter away from the coast. Because organic matter that is transported into the open ocean will eventually sink to the deep ocean, this has implications for the carbon export in this region. The model results are used to calculate cross-shelf fluxes in this region in order to estimate how much organic material is transported across the shelf break. Results show that at the Gulf of Tehuantepec there is high offshore export of organic material, particularly during eddy generation events, but also in fall. The highest export is on the order of 10 Mg C per meter of coastline per day and happens during eddy events. During these events there is a comparable onshore flux to the south of the gulf. Typically there is onshore flux to the south of the gulf during the summer. The model estimated transport away from the coast at the Gulf of Tehuantepec is 167 Tg C/year, and the onshore transport to the south of the gulf is 704 Tg C/year. The second subject of interest is the CRD. In this region, upwelling at the surface is caused by Ekman upwelling during the summer, although the dome is thought to be present at depth throughout the year. The doming of the isotherms below the thermocline is a result of vortex stretching and is decoupled from the wind-driven processes at the surface. A mass-balance budget is calculated at the CRD, and the horizontal and vertical fluxes are related to the abundance of plankton at the dome. There is upwelling (7.2X10-2 Sv ) at the dome throughout the year, but around the location of the dome (90° W), the upwelling is largest in the winter. Further west, input of nutrients from below is larger in the fall and summer. The results suggest that about 80% of the nitrate that is supplied to the dome during summer is actually brought up to the west of the dome and transported eastward by the North Equatorial Counter Current.
Address Department of Oceanography
Corporate Author Thesis $loc['Ph.D. thesis']
Publisher Florida State University Place of Publication Tallahassee, FL Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @ Serial 591
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Author (up) Schoof, J.T.; Arguez, A.; Brolley, J.; O'Brien, J.J.
Title A new weather generator based on spectral properties of surface air temperatures Type $loc['typeJournal Article']
Year 2005 Publication Agricultural and Forest Meteorology Abbreviated Journal Agricultural and Forest Meteorology
Volume 135 Issue 1-4 Pages 241-251
Keywords new weather generator; spectral methods; stochastic modeling; surface air temperatures
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0168-1923 ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @ Serial 444
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Author (up) Shin, D. W.; LaRow, T. E.; Cocke, S.; O'Brien, J. J.
Title The role of the CLM2 in the surface air temperature and precipitation of the FSU climate model Type $loc['typeReport']
Year 2005 Publication Abbreviated Journal
Volume Issue Pages
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Abstract
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Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Research Activities in Atmospheric and Ocean Modeling, CAS/JSC Working Group on Numerical Experimentation Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @ Serial 904
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Author (up) Shin, D.W.; Cocke, S.; LaRow, T.E.; O'Brien, J.J.
Title Seasonal Surface Air Temperature and Precipitation in the FSU Climate Model Coupled to the CLM2 Type $loc['typeJournal Article']
Year 2005 Publication Journal of Climate Abbreviated Journal J. Climate
Volume 18 Issue 16 Pages 3217-3228
Keywords
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0894-8755 ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @ Serial 450
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Author (up) Smith, S. R.
Title Shipboard Automated Meteorological and Oceanographic System (SAMOS) Initiative Type $loc['typeReport']
Year 2005 Publication Abbreviated Journal
Volume Issue Pages cdrom
Keywords
Abstract
Address
Corporate Author Thesis
Publisher World Meteorological Organization Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title 3rd Session of the JCOMM Ship Observation Team Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @ Serial 898
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Author (up) Smith, S. R.
Title Shipboard Automated Meteorological and Oceanographic Systems: A Key Component of an Ocean Observing System Type $loc['typeConference Article']
Year 2005 Publication 9th Symposium on Integrated Observing and Assimilation Systems of Atmosphere, Oceans, and Land Surfaces, American Meteorological Society, San Diego, California, USA Abbreviated Journal
Volume Issue Pages cdrom
Keywords
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Funding NOAA Approved $loc['no']
Call Number COAPS @ mfield @ Serial 900
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Author (up) Smith, S. R.; Kent, E. C.; Cook, S. K.
Title Shipboard Automated Meteorological and Oceanographic System (SAMOS) Initiative Type $loc['typeReport']
Year 2005 Publication Abbreviated Journal
Volume Issue Pages
Keywords
Abstract
Address
Corporate Author Thesis
Publisher World Meteorological Organization Place of Publication Brest, France Editor
Language Summary Language Original Title
Series Editor Series Title 3rd Session of the JCOMM Ship Observation Team Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @ Serial 899
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Author (up) Subrahmanyam, B.; Murty, V. S. N.; O'Brien, J. J.
Title New Sea Surface Salinity Product in the Tropical Indian Ocean Type $loc['typeReport']
Year 2005 Publication Abbreviated Journal
Volume Issue Pages
Keywords
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title CAS/JSC Working Group on Numerical Experimentation Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @ Serial 897
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Author (up) Subrahmanyam, B.; Murty, V.S.N.; Sharp, R.J.; O'Brien, J.J.
Title Air-sea Coupling During the Tropical Cyclones in the Indian Ocean: A Case Study Using Satellite Observations Type $loc['typeJournal Article']
Year 2005 Publication Pure and Applied Geophysics Abbreviated Journal Pure appl. geophys.
Volume 162 Issue 8-9 Pages 1643-1672
Keywords tropical cyclones; Indian Ocean; EOL; OLR; sea-surface salinity; mixed layer depth; Remote Sensing
Abstract
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0033-4553 ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @ Serial 452
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Author (up) Weissman, D. E.; Apgar, G.; Tongue, J. S.; Bourassa, M. A.
Title Corrections to the SeaWinds scatterometer wind vectors by removing rain effects Type $loc['typeJournal Article']
Year 2005 Publication Bulletin of the American Meteorological Society Abbreviated Journal
Volume 86 Issue Pages 621-622
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Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
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Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @ Serial 907
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