Records
Links
Author
Wang, S. ; Kranz, S.A. ; Kelly, T.B. ; Song, H. ; Stukel, M.R. ; Cassar, N.
Title
Lagrangian Studies of Net Community Production: The Effect of Diel and Multiday Nonsteady State Factors and Vertical Fluxes on O2 /Ar in a Dynamic Upwelling Region
Type
$loc['typeJournal Article']
Year
2020
Publication
Journal of Geophysical Research: Biogeosciences
Abbreviated Journal
J. Geophys. Res. Biogeosci.
Volume
125
Issue
6
Pages
e2019JG005569
Keywords
net community production ; O2/Ar ; California Current Ecosystem ; Lagrangian measurements ; vertical fluxes ; nonsteady state
Abstract
The ratio of dissolved oxygen to argon in seawater is frequently employed to estimate rates of net community production (NCP) in the oceanic mixed layer. The in situ O2/Ar‐based method accounts for many physical factors that influence oxygen concentrations, permitting isolation of the biological oxygen signal produced by the balance of photosynthesis and respiration. However, this technique traditionally relies upon several assumptions when calculating the mixed‐layer O2/Ar budget, most notably the absence of vertical fluxes of O2/Ar and the principle that the air‐sea gas exchange of biological oxygen closely approximates net productivity rates. Employing a Lagrangian study design and leveraging data outputs from a regional physical oceanographic model, we conducted in situ measurements of O2/Ar in the California Current Ecosystem in spring 2016 and summer 2017 to evaluate these assumptions within a �worst‐case� field environment. Quantifying vertical fluxes, incorporating nonsteady state changes in O2/Ar, and comparing NCP estimates evaluated over several day versus longer timescales, we find differences in NCP metrics calculated over different time intervals to be considerable, also observing significant potential effects from vertical fluxes, particularly advection. Additionally, we observe strong diel variability in O2/Ar and NCP rates at multiple stations. Our results reemphasize the importance of accounting for vertical fluxes when interpreting O2/Ar‐derived NCP data and the potentially large effect of nonsteady state conditions on NCP evaluated over shorter timescales. In addition, diel cycles in surface O2/Ar can also bias interpretation of NCP data based on local productivity and the time of day when measurements were made.
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
2169-8953
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ user @
Serial
1114
Permanent link to this record
Author
Powell, M.
Title
), Observing and Analyzing the Near-Surface Wind Field in Tropical Cyclones
Type
$loc['typeBook Chapter']
Year
2010
Publication
Global Perspectives on Tropical Cyclones: From Science to Mitigation
Abbreviated Journal
Volume
Issue
Pages
177-199
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
World Scientific
Place of Publication
Editor
Chan, JCL; Kepert, JD
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
376
Permanent link to this record
Author
Cocke, S. ; Boisserie, M. ; Shin, D.-W.
Title
A coupled soil moisture initialization scheme for the FSU/COAPS climate model
Type
$loc['typeJournal Article']
Year
2013
Publication
Inverse Problems in Science and Engineering
Abbreviated Journal
Inverse Problems in Science and Engineering
Volume
21
Issue
3
Pages
420-437
Keywords
soil moisture initialization ; data assimilation ; precipitation assimilation ; nudging ; reanalysis
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
1741-5977
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
199
Permanent link to this record
Author
Krishnamurti, T.N. ; Kishtawal, C. ; LaRow, T. E. ; Bachiochi, D. ; Zhang, Z. ; Williford, C. ; Gadgil, S. ; Surendran, S.
Title
Improved Skill for Weather and Seasonal Climate Forecasts from Multi-Model Super Ensemble
Type
$loc['typeJournal Article']
Year
1999
Publication
Science
Abbreviated Journal
Volume
285
Issue
5433
Pages
1548-1550
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
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
781
Permanent link to this record
Author
Cammarano, D. ; Basso, B. ; Stefanova, L. ; Grace, P.
Title
Adapting wheat sowing dates to projected climate change in the Australian subtropics: analysis of crop water use and yield
Type
$loc['typeJournal Article']
Year
2012
Publication
Crop and Pasture Science
Abbreviated Journal
Crop Pasture Sci.
Volume
63
Issue
10
Pages
974
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
1836-0947
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
257
Permanent link to this record
Author
González-Rodríguez, E. ; Trasviña-Castro, A. ; Gaxiola-Castro, G. ; Zamudio, L. ; Cervantes-Duarte, R.
Title
Net primary productivity, upwelling and coastal currents in the Gulf of Ulloa, Baja California, México
Type
$loc['typeJournal Article']
Year
2012
Publication
Ocean Science
Abbreviated Journal
Ocean Sci.
Volume
8
Issue
4
Pages
703-711
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
1812-0792
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
258
Permanent link to this record
Author
Shin, D. W., G. A. Baigorria, Y.-K. Lim, S. Cocke, T. E. LaRow, J. J. O'Brien, and J. W. Jones
Title
Assessing Crop Yield Simulations with Various Seasonal Climate Data
Type
$loc['typeMagazine Article']
Year
2009
Publication
Science and Technology Infusion Climate Bulletin
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
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
662
Permanent link to this record
Author
Coles, V.J. ; Stukel, M.R. ; Brooks, M.T. ; Burd, A. ; Crump, B.C. ; Moran, M.A. ; Paul, J.H. ; Satinsky, B.M. ; Yager, P.L. ; Zielinski, B.L. ; Hood, R.R.
Title
Ocean biogeochemistry modeled with emergent trait-based genomics
Type
$loc['typeJournal Article']
Year
2017
Publication
Science (New York, N.Y.)
Abbreviated Journal
Science
Volume
358
Issue
6367
Pages
1149-1154
Keywords
Abstract
Address
Horn Point Laboratory, University of Maryland Center for Environmental Science (UMCES), Post Office Box 775, Cambridge, MD 21613, 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
0036-8075
ISBN
Medium
Area
Expedition
Conference
Funding
PMID:29191900
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
552
Permanent link to this record
Author
Zhang, M. ; Zhang, Y. ; Shu, Q. ; Zhao, C. ; Wang, G. ; Wu, Z. ; Qiao, F.
Title
Spatiotemporal evolution of the chlorophyll a trend in the North Atlantic Ocean
Type
$loc['typeJournal Article']
Year
2018
Publication
The Science of the Total Environment
Abbreviated Journal
Sci Total Environ
Volume
612
Issue
Pages
1141-1148
Keywords
Chlorophyll a ; Dipole pattern ; Multidimensional ensemble empirical mode decomposition ; Propagation ; Spatiotemporal evolution ; The variable trend
Abstract
Analyses of the chlorophyll a concentration (chla) from satellite ocean color products have suggested the decadal-scale variability of chla linked to the climate change. The decadal-scale variability in chla is both spatially and temporally non-uniform. We need to understand the spatiotemporal evolution of chla in decadal or multi-decadal timescales to better evaluate its linkage to climate variability. Here, the spatiotemporal evolution of the chla trend in the North Atlantic Ocean for the period 1997-2016 is analyzed using the multidimensional ensemble empirical mode decomposition method. We find that this variable trend signal of chla shows a dipole pattern between the subpolar gyre and along the Gulf Stream path, and propagation along the opposite direction of the North Atlantic Current. This propagation signal has an overlapping variability of approximately twenty years. Our findings suggest that the spatiotemporal evolution of chla during the two most recent decades is part of the multidecadal variations and possibly regulated by the changes of Atlantic Meridional Overturning Circulation, whereas the mechanisms of such evolution patterns still need to be explored.
Address
First Institute of Oceanography, State Oceanic Administration, Qingdao, China; Laboratory for Regional Oceanography and Numerical Modeling, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Key Laboratory of Data Analysis and Applications, State Oceanic Administration, Qingdao, China. Electronic address: qiaofl@fio.org.cn
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
0048-9697
ISBN
Medium
Area
Expedition
Conference
Funding
PMID:28892858
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
363
Permanent link to this record
Author
Stukel, M.R. ; Aluwihare, L.I. ; Barbeau, K.A. ; Chekalyuk, A.M. ; Goericke, R. ; Miller, A.J. ; Ohman, M.D. ; Ruacho, A. ; Song, H. ; Stephens, B.M. ; Landry, M.R.
Title
Mesoscale ocean fronts enhance carbon export due to gravitational sinking and subduction
Type
$loc['typeJournal Article']
Year
2017
Publication
Proceedings of the National Academy of Sciences of the United States of America
Abbreviated Journal
Proc Natl Acad Sci U S A
Volume
114
Issue
6
Pages
1252-1257
Keywords
biological carbon pump ; carbon cycle ; particle flux ; particulate organic carbon ; plankton
Abstract
Enhanced vertical carbon transport (gravitational sinking and subduction) at mesoscale ocean fronts may explain the demonstrated imbalance of new production and sinking particle export in coastal upwelling ecosystems. Based on flux assessments from 238U:234Th disequilibrium and sediment traps, we found 2 to 3 times higher rates of gravitational particle export near a deep-water front (305 mg Cm-2d-1) compared with adjacent water or to mean (nonfrontal) regional conditions. Elevated particle flux at the front was mechanistically linked to Fe-stressed diatoms and high mesozooplankton fecal pellet production. Using a data assimilative regional ocean model fit to measured conditions, we estimate that an additional approximately 225 mg Cm-2d-1 was exported as subduction of particle-rich water at the front, highlighting a transport mechanism that is not captured by sediment traps and is poorly quantified by most models and in situ measurements. Mesoscale fronts may be responsible for over a quarter of total organic carbon sequestration in the California Current and other coastal upwelling ecosystems.
Address
Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093
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
0027-8424
ISBN
Medium
Area
Expedition
Conference
Funding
PMID:28115723; PMCID:PMC5307443
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
67
Permanent link to this record