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Author Stukel, M.R.; Benitez-Nelson, C.R.; Decima, M.; Taylor, A.G.; Buchwald, C.; Landry, M.R.
Title The biological pump in the Costa Rica Dome: an open-ocean upwelling system with high new production and low export Type $loc['typeJournal Article']
Year 2016 Publication Journal of Plankton Research Abbreviated Journal J Plankton Res
Volume 38 Issue 2 Pages 348-365
Keywords Eastern Tropical Pacific; biogeochemistry; carbon flux; nutrients; plankton
Abstract The Costa Rica Dome is a picophytoplankton-dominated, open-ocean upwelling system in the Eastern Tropical Pacific that overlies the ocean's largest oxygen minimum zone. To investigate the efficiency of the biological pump in this unique area, we used shallow (90-150 m) drifting sediment traps and 234Th:238U deficiency measurements to determine export fluxes of carbon, nitrogen and phosphorus in sinking particles. Simultaneous measurements of nitrate uptake and shallow water nitrification allowed us to assess the equilibrium balance of new and export production over a monthly timescale. While f-ratios (new:total production) were reasonably high (0.36 +/- 0.12, mean +/- standard deviation), export efficiencies were considerably lower. Sediment traps suggested e-ratios (export/14C-primary production) at 90-100 m ranging from 0.053 to 0.067. ThE-ratios (234Th disequilibrium-derived export) ranged from 0.038 to 0.088. C:N and N:P stoichiometries of sinking material were both greater than canonical (Redfield) ratios or measured C:N of suspended particulates, and they increased with depth, suggesting that both nitrogen and phosphorus were preferentially remineralized from sinking particles. Our results are consistent with an ecosystem in which mesozooplankton play a major role in energy transfer to higher trophic levels but are relatively inefficient in mediating vertical carbon flux to depth, leading to an imbalance between new production and sinking flux.
Address Scripps Institution of Oceanography , University of California at San Diego , La Jolla, CA 92037 , USA
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0142-7873 ISBN Medium
Area Expedition Conference
Funding PMID:27275035; PMCID:PMC4889986 Approved $loc['no']
Call Number COAPS @ mfield @ Serial 90
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Author Landry, M.R.; Selph, K.E.; Decima, M.; Gutierrez-Rodriguez, A.; Stukel, M.R.; Taylor, A.G.; Pasulka, A.L.
Title Phytoplankton production and grazing balances in the Costa Rica Dome Type $loc['typeJournal Article']
Year 2016 Publication Journal of Plankton Research Abbreviated Journal J Plankton Res
Volume 38 Issue 2 Pages 366-379
Keywords grazing; plankton community; productivity
Abstract We investigated phytoplankton production rates and grazing fates in the Costa Rica Dome (CRD) during summer 2010 based on dilution depth profiles analyzed by flow cytometry and pigments and mesozooplankton grazing assessed by gut fluorescence. Three community production estimates, from 14C uptake (1025 +/- 113 mg C m-2 day-1) and from dilution experiments analyzed for total Chla (990 +/- 106 mg C m-2 day-1) and flow cytometry populations (862 +/- 71 mg C m-2 day-1), exceeded regional ship-based values by 2-3-fold. Picophytoplankton accounted for 56% of community biomass and 39% of production. Production profiles extended deeper for Prochlorococcus (PRO) and picoeukaryotes than for Synechococcus (SYN) and larger eukaryotes, but 93% of total production occurred above 40 m. Microzooplankton consumed all PRO and SYN growth and two-third of total production. Positive net growth of larger eukaryotes in the upper 40 m was balanced by independently measured consumption by mesozooplankton. Among larger eukaryotes, diatoms contributed approximately 3% to production. On the basis of this analysis, the CRD region is characterized by high production and grazing turnover, comparable with or higher than estimates for the eastern equatorial Pacific. The region nonetheless displays characteristics atypical of high productivity, such as picophytoplankton dominance and suppressed diatom roles.
Address Scripps Institution of Oceanography, 9500 Gilman Dr., La Jolla, CA 92093-0227, USA; Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0142-7873 ISBN Medium
Area Expedition Conference
Funding PMID:27275036; PMCID:PMC4889984 Approved $loc['no']
Call Number COAPS @ mfield @ Serial 85
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Author Lobodin, V.V.; Maksimova, E.V.; Rodgers, R.P.
Title Gas Chromatography/Atmospheric Pressure Chemical Ionization Tandem Mass Spectrometry for Fingerprinting the Macondo Oil Spill Type $loc['typeJournal Article']
Year 2016 Publication Analytical Chemistry Abbreviated Journal Anal Chem
Volume 88 Issue 13 Pages 6914-6922
Keywords
Abstract We report the first application of a new mass spectrometry technique (gas chromatography combined to atmospheric pressure chemical ionization tandem mass spectrometry, GC/APCI-MS/MS) for fingerprinting a crude oil and environmental samples from the largest accidental marine oil spill in history (the Macondo oil spill, the Gulf of Mexico, 2010). The fingerprinting of the oil spill is based on a trace analysis of petroleum biomarkers (steranes, diasteranes, and pentacyclic triterpanes) naturally occurring in crude oil. GC/APCI enables soft ionization of petroleum compounds that form abundant molecular ions without (or little) fragmentation. The ability to operate the instrument simultaneously in several tandem mass spectrometry (MS/MS) modes (e.g., full scan, product ion scan, reaction monitoring) significantly improves structural information content and sensitivity of analysis. For fingerprinting the oil spill, we constructed diagrams and conducted correlation studies that measure the similarity between environmental samples and enable us to differentiate the Macondo oil spill from other sources.
Address National High Magnetic Field Laboratory, Florida State University , 1800 East Paul Dirac Drive, Tallahassee, Florida 32310, United States
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0003-2700 ISBN Medium
Area Expedition Conference
Funding PMID:27281271 Approved $loc['no']
Call Number COAPS @ mfield @ Serial 40
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Author Conlon, K.C.; Kintziger, K.W.; Jagger, M.; Stefanova, L.; Uejio, C.K.; Konrad, C.
Title Working with Climate Projections to Estimate Disease Burden: Perspectives from Public Health Type $loc['typeJournal Article']
Year 2016 Publication International Journal of Environmental Research and Public Health Abbreviated Journal Int J Environ Res Public Health
Volume 13 Issue 8 Pages
Keywords *Climate Change/statistics & numerical data; Florida; Forecasting; Humans; Models, Theoretical; Public Health/*trends; United States; adaptation; attributable fraction; climate modeling; project disease burden; public health
Abstract There is interest among agencies and public health practitioners in the United States (USA) to estimate the future burden of climate-related health outcomes. Calculating disease burden projections can be especially daunting, given the complexities of climate modeling and the multiple pathways by which climate influences public health. Interdisciplinary coordination between public health practitioners and climate scientists is necessary for scientifically derived estimates. We describe a unique partnership of state and regional climate scientists and public health practitioners assembled by the Florida Building Resilience Against Climate Effects (BRACE) program. We provide a background on climate modeling and projections that has been developed specifically for public health practitioners, describe methodologies for combining climate and health data to project disease burden, and demonstrate three examples of this process used in Florida.
Address Department of Geography, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3220, USA. konrad@unc.edu
Corporate Author Thesis
Publisher Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1660-4601 ISBN Medium
Area Expedition Conference
Funding PMID:27517942; PMCID:PMC4997490 Approved $loc['no']
Call Number COAPS @ mfield @ Serial 73
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Author Liu, J.; Feld, D.; Xue, Y.; Garcke, J.; Soddemann, T.; Pan, P.
Title An efficient geosciences workflow on multi-core processors and GPUs: a case study for aerosol optical depth retrieval from MODIS satellite data Type $loc['typeJournal Article']
Year 2016 Publication International Journal of Digital Earth Abbreviated Journal International Journal of Digital Earth
Volume 9 Issue 8 Pages 748-765
Keywords Digital earth; high-performance computing; GPU; multi-core; hybrid parallel pattern; aerosol optical depth; retrieval workflow
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 1753-8947 ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @ Serial 86
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Author Groenen, D.; Misra, V.
Title Characterization of the Rainy Season of Mesoamerica Type $loc['typeConference Article']
Year 2016 Publication Abbreviated Journal
Volume Issue Pages
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Publisher American Meteorological Society Place of Publication Editor
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Area Expedition Conference 32nd Conference on Hurricanes and Tropical Meteorology
Funding Approved $loc['no']
Call Number COAPS @ mfield @ Serial 76
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Author Xue, W.; Xin, X.; Zhang, J.; Zhang, W.; Wu, H.; Huang, Z.; Zhang, T.; Li, H.; Ding, N.; Huang H.
Title Development and Testing of a Multi-model Ensemble Coupling Framework Type $loc['typeBook Chapter']
Year 2016 Publication Development and Evaluation of High Resolution Climate System Models Abbreviated Journal
Volume Issue Pages 163-208
Keywords Climate system model; Ensemble coupling platform; Atmospheric noise; Process layout
Abstract
Address
Corporate Author Thesis
Publisher Springer Place of Publication Editor
Language Summary Language Original Title
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Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @ Serial 91
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Author Cintra, R.; Campos Velho, H.; Cocke, S.
Title Multilayer Perceptron on data assimilation system applied to FSU global model Type $loc['typeConference Article']
Year 2016 Publication Abbreviated Journal
Volume Issue Pages
Keywords data assimilation; artificial neural networks; numerical weather prediction; inverse problem
Abstract
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Area Expedition Conference 3rd International Symposium on Uncertainty Quantification and Stochastic Modeling Maresias, Brazil: 15/2/2016 to 19/2/2016
Funding Approved $loc['no']
Call Number COAPS @ mfield @ Serial 88
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Author Özgökmen, T.; Chassignet, E.; Dawson, C.; Dukhovskoy, D.; Jacobs, G.; Ledwell, J.; Garcia-Pineda, O.; MadDonald, I.; Morey, S.; Olascoaga, M.; Poje, A.; Reed, M.; Skancke, J.
Title Over What Area Did the Oil and Gas Spread During the 2010 Deepwater Horizon Oil Spill? Type $loc['typeJournal Article']
Year 2016 Publication Oceanography Abbreviated Journal Oceanog
Volume 29 Issue 3 Pages 96-107
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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 1042-8275 ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @ Serial 87
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