Records
Links
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
Permanent link to this record
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
Permanent link to this record
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
Permanent link to this record
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
Permanent link to this record
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
Permanent link to this record
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
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
American Meteorological Society
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
32nd Conference on Hurricanes and Tropical Meteorology
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
76
Permanent link to this record
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
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
91
Permanent link to this record
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
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
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
Permanent link to this record
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
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
1042-8275
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
87
Permanent link to this record