Records
Links
Author
Morrow, R.M. ; Ohman, M.D. ; Goericke, R. ; Kelly, T.B. ; Stephens, B.M. ; Stukel, M.R.
Title
CCE V: Primary production, mesozooplankton grazing, and the biological pump in the California Current Ecosystem: Variability and response to El Niño
Type
$loc['typeJournal Article']
Year
2018
Publication
Deep Sea Research Part I: Oceanographic Research Papers
Abbreviated Journal
Deep Sea Research Part I: Oceanographic Research Papers
Volume
140
Issue
Pages
52-62
Keywords
Carbon export ; Fecal pellets ; Sinking particles ; Interannual variability ; Net primary productivity ; Eastern boundary upwelling system
Abstract
Predicting marine carbon sequestration in a changing climate requires mechanistic understanding of the processes controlling sinking particle flux under different climatic conditions. The recent occurrence of a warm anomaly (2014-2015) followed by an El Nino (2015-2016) in the southern sector of the California Current System presented an opportunity to analyze changes in the biological carbon pump in response to altered climate forcing. We compare primary production, mesozooplankton grazing, and carbon export from the euphotic zone during quasi-Lagrangian experiments conducted in contrasting conditions: two cruises during warm years – one during the warm anomaly in 2014 and one toward the end of El Nino 2016 – and three cruises during El Ninoneutral years. Results showed no substantial differences in the relationships between vertical carbon export and its presumed drivers (primary production, mesozooplankton grazing) between warm and neutral years. Mesozooplankton fecal pellet enumeration and phaeopigment measurements both showed that fecal pellets were the dominant contributor to export in productive upwelling regions. In more oligotrophic regions, fluxes were dominated by amorphous marine snow with negligible pigment content. We found no evidence for a significant shift in the relationship between mesozooplankton grazing rate and chlorophyll concentration. However, massspecific grazing rates were lower at low-to-moderate chlorophyll concentrations during warm years relative to neutral years. We also detected a significant difference in the relationship between phytoplankton primary production and photosynthetically active radiation between years: at similar irradiance and nutrient concentrations, productivity decreased during the warm events. Whether these changes resulted from species composition changes remains to be determined. Overall, our results suggest that the processes driving export remain similar during different climate conditions, but that species compositional changes or other structural changes require further attention.
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
0967-0637
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ user @
Serial
1021
Permanent link to this record
Author
Kelly, T.B. ; Goericke, R. ; Kahru, M. ; Song, H. ; Stukel, M.R.
Title
CCE II: Spatial and interannual variability in export efficiency and the biological pump in an eastern boundary current upwelling system with substantial lateral advection
Type
$loc['typeJournal Article']
Year
2018
Publication
Deep Sea Research Part I: Oceanographic Research Papers
Abbreviated Journal
Deep Sea Research Part I: Oceanographic Research Papers
Volume
140
Issue
Pages
14-25
Keywords
CALIFORNIA CURRENT ECOSYSTEM ; OCEAN CARBON-CYCLE ; COASTAL WATERS ; FRONTAL ZONE ; TIME-SERIES ; FLUX ; SINKING ; SEA ; PACIFIC ; ZOOPLANKTON
Abstract
Estimating interannual variability in carbon export is a key goal of many marine biogeochemical studies. However, due to variations in export mechanisms between regions, generalized models used to estimate global patterns in export often fail when used for intra-regional analysis. We present here a region-specific model of export production for the California Current Ecosystem (CCE) parameterized using intensive Lagrangian process studies conducted during El Niño-Southern Oscillation (ENSO) warm and neutral phases by the CCE Long-Term Ecological Research (LTER) program. We find that, contrary to expectations from prominent global algorithms, export efficiency (e-ratio = export / primary productivity) is positively correlated with temperature and negatively correlated with net primary productivity (NPP). We attribute these results to the substantial horizontal advection found within the region, and verify this assumption by using a Lagrangian particle tracking model to estimate water mass age. We further suggest that sinking particles in the CCE are comprised of a recently-produced, rapidly-sinking component (likely mesozooplankton fecal pellets) and a longer-lived, slowly-sinking component that is likely advected long distances prior to export. We determine a new algorithm for estimating particle export in the CCE from NPP (Export = 0.08 · NPP + 72 mg C m-2 d-1). We apply this algorithm to a two-decade long time series of NPP in the CCE to estimate spatial and interannual variability across multiple ENSO phases. Reduced export during the warm anomaly of 2014-2015 and El Niño 2015-2016 resulted primarily from decreased export in the coastal upwelling region of the CCE; the oligotrophic offshore region exhibited comparatively low seasonal and interannual variability in flux. The model resolves intra-regional patterns of in situ export measurements, and provides a valuable contrast to global export models.
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
0967-0637
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ rl18 @
Serial
984
Permanent link to this record
Author
Kelly, T.B. ; Goericke, R. ; Kahru, M. ; Song, H. ; Stukel, M.R.
Title
CCE II: Spatial and interannual variability in export efficiency and the biological pump in an eastern boundary current upwelling system with substantial lateral advection
Type
$loc['typeJournal Article']
Year
2018
Publication
Deep Sea Research Part I: Oceanographic Research Papers
Abbreviated Journal
Deep Sea Research Part I: Oceanographic Research Papers
Volume
140
Issue
Pages
14-25
Keywords
california current ecosystem ; coastal waters ; flux ; frontal zone ; ocean carbon-cycle ; oceanography ; pacific ; sea ; sinking ; time-series ; Zooplankton
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
0967-0637
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ user @
Serial
1022
Permanent link to this record
Author
Goni, G. ; DeMaria, M. ; Knaff, J. ; Sampson, C. ; Ginis, I. ; Bringas, F. ; Mavume, A. ; Lauer, C. ; Lin, I.I. ; Ali, M.M. ; Sandery, P. ; Ramos-Buarque, S. ; Kang, K.R. ; Mehra, A. ; Chassignet, E. ; Halliwell, G.
Title
Applications of Satellite-Derived Ocean Measurements to Tropical Cyclone Intensity Forecasting
Type
$loc['typeJournal Article']
Year
2009
Publication
Oceanography
Abbreviated Journal
Oceanog.
Volume
22
Issue
3
Pages
190-197
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
384
Permanent link to this record
Author
Garcia-Pineda, O. ; MacDonald, I. ; Hu, C. ; Svejkovsky, J. ; Hess, M. ; Dukhovskoy, D. ; Morey, S.
Title
Detection of Floating Oil Anomalies From the Deepwater Horizon Oil Spill With Synthetic Aperture Radar
Type
$loc['typeJournal Article']
Year
2013
Publication
Oceanography
Abbreviated Journal
oceanog
Volume
26
Issue
2
Pages
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
Deep-C, BOEM
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
213
Permanent link to this record
Author
Dombrowsky, E. ; Bertino, L. ; Brassington, G. ; Chassignet, E. ; Davidson, F. ; Hurlburt, H. ; Kamachi, M. ; Lee, T. ; Martin, M. ; Mei, S. ; Tonani, M.
Title
GODAE Systems in Operation
Type
$loc['typeJournal Article']
Year
2009
Publication
Oceanography
Abbreviated Journal
Oceanog.
Volume
22
Issue
3
Pages
80-95
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
382
Permanent link to this record
Author
Hurlburt, H. ; Brassington, G. ; Drillet, Y. ; Kamachi, M. ; Benkiran, M. ; Bourdallé-Badie, R. ; Chassignet, E. ; Jacobs, G. ; Galloudec, O. ; Lellouche, J.-M. ; Metzger, E.J. ; Oke, P. ; Pugh, T. ; Schiller, A. ; Smedstad, O. ; Tranchant, B. ; Tsujino, H. ; Usui, N. ; Wallcraft, A.
Title
High-Resolution Global and Basin-Scale Ocean Analyses and Forecasts
Type
$loc['typeJournal Article']
Year
2009
Publication
Oceanography
Abbreviated Journal
Oceanog.
Volume
22
Issue
3
Pages
110-127
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
675
Permanent link to this record
Author
Cornillon, P. ; Adams, J. ; Blumenthal, M.B. ; Chassignet, E. ; Davis, E. ; Hankin, S. ; Kinter, J. ; Mendelssohn, R. ; Potemra, J. ; Srinivasan, A. ; Sirott, J.
Title
NVODS and the Development of OPeNDAP
Type
$loc['typeJournal Article']
Year
2009
Publication
Oceanography
Abbreviated Journal
Oceanog.
Volume
22
Issue
2
Pages
116-127
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
391
Permanent link to this record
Author
Bourassa, M. ; Gille, S. ; Jackson, D. ; Roberts, J.B. ; Wick, G.
Title
Ocean Winds and Turbulent Air-Sea Fluxes Inferred From Remote Sensing
Type
$loc['typeJournal Article']
Year
2010
Publication
Oceanography
Abbreviated Journal
Oceanog.
Volume
23
Issue
4
Pages
36-51
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
NASA, OVWST, NOAA, OCO
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
366
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