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Author
Nyadjro, E.S. ; Rydbeck, A.V. ; Jensen, T.G. ; Richman, J.G. ; Shriver, J.F.
Title
On the Generation and Salinity Impacts of Intraseasonal Westward Jets in the Equatorial Indian Ocean
Type
$loc['typeJournal Article']
Year
2020
Publication
Journal of Geophysical Research: Oceans
Abbreviated Journal
J. Geophys. Res. Oceans
Volume
125
Issue
6
Pages
e2020JC016066
Keywords
ndian Ocean ; intraseasonal variability ; westward Jet ; intraseasonal oscillations ; mixed layer salinity ; surface currents
Abstract
While westerly winds dominate the equatorial Indian Ocean and generate the well‐known eastward flowing Wyrtki Jets during boreal spring and fall, there is evidence of a strong westward surface jet during winter that is swifter than eastward currents during that season. A weaker westward jet is found in summer. In this study, we report the occurrence, characteristics, and intraseasonal variability of this westward jet and its impact on mixed layer salinity in the equatorial Indian Ocean using the HYbrid Coordinate Ocean Model (HYCOM) reanalysis with the Navy Coupled Ocean Data Assimilation (NCODA). The westward jet typically occurs in the upper 50 m, above an eastward flowing equatorial undercurrent, with peak westward volume transport of approximately −8 Sv. The westward jet builds up gradually, decays rapidly, and is primarily forced by local intraseasonal wind stress anomalies generated by atmospheric intraseasonal convection. Westward acceleration of the jet occurs when the dominant intraseasonal westward wind anomaly is not balanced by the zonal pressure gradient (ZPG) force. The intraseasonal westward jet generates strong horizontal advection and is the leading cause of mixed layer freshening in the western equatorial Indian Ocean. Without it, a saltier mixed layer would persist and weaken any barrier layers. Existing barrier layers are strengthened following the passage of freshwater‐laden westward jets. Deceleration of the westward jet occurs when the eastward ZPG becomes increasingly important and the westward intraseasonal wind anomalies weaken. A rapid reversal of atmospheric intraseasonal convection‐driven surface winds eventually terminates the westward jet.
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
2169-9275
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ user @
Serial
1118
Permanent link to this record
Author
O'Brien, J. J. ; Bourassa, M. A.
Title
Scatterometry at COAPS
Type
$loc['typeConference Article']
Year
2000
Publication
Proceedings of the Ocean Vector Wind Science Team Meeting, Arcadia, CA, USA
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
803
Permanent link to this record
Author
O'Brien, J. J. ; Bourassa, M. A. ; Smith, S. R.
Title
Climate variability in ocean surface turbulent fluxes
Type
$loc['typeReport']
Year
2005
Publication
Abbreviated Journal
Volume
Issue
Pages
214-219
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
NOAA Office of Climate Observation
Place of Publication
Silver Spring, MD, 20910. USA
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Annual Report: The State of the Ocean and the Ocean Observing System for Climate
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
NOAA
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
911
Permanent link to this record
Author
O'Brien, J. J. ; Bourassa, M. A. ; Smith, S. R.
Title
U.S. research vessel surface meteorology data assembly center
Type
$loc['typeReport']
Year
2005
Publication
Abbreviated Journal
Volume
Issue
Pages
221-228
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
NOAA Office of Climate Observation
Place of Publication
Silver Spring, MD, 20910. USA
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Annual Report: The State of the Ocean and the Ocean Observing System for Climate
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
NOAA
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
912
Permanent link to this record
Author
O'Brien, J. J. ; Zierden, D. F. ; Griffin, M.
Title
Long-term Forecasting of Wildfire season severity in Florida
Type
$loc['typeReport']
Year
2002
Publication
Abbreviated Journal
Volume
Issue
Pages
42
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Center for Ocean-Atmospheric Prediction Studies, Florida State University
Place of Publication
Tallahassee, FL
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Technical Report 02-2
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
856
Permanent link to this record
Author
O'Brien, J. ; Richards, T. S. ; Davis, A. C.
Title
The effect of El Nino on U.S. landfalling hurricanes
Type
$loc['typeMagazine Article']
Year
1996
Publication
Bulletin of the American Meteorological Society
Abbreviated Journal
Volume
77
Issue
4
Pages
773-774
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
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Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
715
Permanent link to this record
Author
O'Brien, JJ ; Richards, TS ; Davis, AC
Title
The effect of El Nino on US landfalling hurricanes
Type
$loc['typeJournal Article']
Year
1996
Publication
Bulletin of the American Meteorological Society
Abbreviated Journal
Volume
77
Issue
4
Pages
773-774
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
547
Permanent link to this record
Author
O'hara, S. H. ; Arko, R. A. ; Clark, D. ; Chandler, C. L. ; Elya, J. L. ; Ferrini, V. L. ; McLain, K. ; Olson, C. J. ; Sellers, C. J. ; Smith, S. R. ; Stocks, K. I. ; Stolp, L. ; Carbotte, S. M.
Title
Rolling Deck to Repository (R2R) Program Data Services for the Oceanographic Research Community
Type
$loc['typeJournal Article']
Year
2018
Publication
American Geophysical Union
Abbreviated Journal
Volume
Issue
Pages
Keywords
4299 General or miscellaneous, OCEANOGRAPHY: GENERAL
Abstract
Research vessels supported by NSF are critical platforms contributing to academic oceanographic research in the US. The “underway” data sets obtained from the continuously operating geophysical, water column, and meteorological sensors aboard these vessels provide characterization of basic environmental conditions for the oceans and are of high scientific value for building global syntheses, climatologies, and historical time series of ocean properties (e.g the World Ocean Atlas, the GMRT bathymetric synthesis, ICOADS). The Rolling deck to Repository program (www.rvdata.us) provides a central shore-side data gateway that ensures the basic documentation, assessment and submission of all environmental data from ship operators to the NOAA long-term archives for these data. R2R provides a set of data services for the oceanographic research community, including: publishing an online, searchable and browsable master cruise catalog, supported by cruise and data set DOIs; organizing, archiving, and disseminating original underway data and documents; assessing data quality on select data types; creating select post-field data products; and supporting at-sea event logging. In this presentation we will discuss new developments in R2R data services and challenges associated with ship-based data management. A significant challenge is the dramatic increase in data volumes associated with new sensors (e.g. the EK80 Sonar systems) whereby individual cruise distributions can be several terabytes. Ship operators, R2R and NCEI must design a way to move and store these growing volumes. R2R is also working to make information more accessible and complete. A new website has been launched along with API web services that allow users to find and use data more easily. R2R is working to improve device metadata, including working to identify the time sources for all environmental sensors to support accurate comparison and merging of data sets.
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 @ user @
Serial
1006
Permanent link to this record
Author
O'hara, S. H. ; Arko, R. A. ; Clark, D. ; Chandler, C. L. ; Elya, J. L. ; Ferrini, V. L. ; McLain, K. ; Olson, C. J. ; Sellers, C. J. ; Smith, S. R. ; Stocks, K. I. ; Stolp, L. ; Carbotte, S. M.
Title
Rolling Deck to Repository (R2R) Program Data Services for the Oceanographic Research Community
Type
$loc['typeAbstract']
Year
2018
Publication
American Geophysical Union
Abbreviated Journal
AGU
Volume
American Geophysical Union, Fall Meeting 2018
Issue
Pages
Keywords
OCEANOGRAPHY: GENERAL
Abstract
Research vessels supported by NSF are critical platforms contributing to academic oceanographic research in the US. The “underway” data sets obtained from the continuously operating geophysical, water column, and meteorological sensors aboard these vessels provide characterization of basic environmental conditions for the oceans and are of high scientific value for building global syntheses, climatologies, and historical time series of ocean properties (e.g the World Ocean Atlas, the GMRT bathymetric synthesis, ICOADS). The Rolling deck to Repository program (www.rvdata.us) provides a central shore-side data gateway that ensures the basic documentation, assessment and submission of all environmental data from ship operators to the NOAA long-term archives for these data. R2R provides a set of data services for the oceanographic research community, including: publishing an online, searchable and browsable master cruise catalog, supported by cruise and data set DOIs; organizing, archiving, and disseminating original underway data and documents; assessing data quality on select data types; creating select post-field data products; and supporting at-sea event logging. In this presentation we will discuss new developments in R2R data services and challenges associated with ship-based data management. A significant challenge is the dramatic increase in data volumes associated with new sensors (e.g. the EK80 Sonar systems) whereby individual cruise distributions can be several terabytes. Ship operators, R2R and NCEI must design a way to move and store these growing volumes. R2R is also working to make information more accessible and complete. A new website has been launched along with API web services that allow users to find and use data more easily. R2R is working to improve device metadata, including working to identify the time sources for all environmental sensors to support accurate comparison and merging of data sets.
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 @ user @
Serial
1020
Permanent link to this record
Author
Palacios-Hernández, E. ; Carrillo, L. ; Lavín, M.F. ; Zamudio, L. ; García-Sandoval, A.
Title
Hydrography and circulation in the Northern Gulf of California during winter of 1994-1995
Type
$loc['typeJournal Article']
Year
2006
Publication
Continental Shelf Research
Abbreviated Journal
Continental Shelf Research
Volume
26
Issue
1
Pages
82-103
Keywords
seasonal circulation ; gyres ; coastally trapped waves ; ENSO ; Gulf of California
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
0278-4343
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
442
Permanent link to this record