Records
Author
Nyadjro, E.S. ; Jensen, T.G. ; Richman, J.G. ; Shriver, J.F.
Title
On the Relationship Between Wind, SST, and the Thermocline in the Seychelles-Chagos Thermocline Ridge
Type
$loc['typeJournal Article']
Year
2017
Publication
IEEE Geoscience and Remote Sensing Letters
Abbreviated Journal
IEEE Geosci. Remote Sensing Lett.
Volume
14
Issue
12
Pages
2315-2319
Keywords
Altimetry ; HYbrid Coordinate Ocean Model (HYCOM) ; Indian Ocean Dipole (IOD) ; ocean-atmosphere coupling ; Rossby waves ; sea surface temperature (SST) ; thermocline depth ; winds
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
1545-598X
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
465
Permanent link to this record
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
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Series Editor
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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
Nyadjro, E.S. ; Subrahmanyam, B. ; Murty, V.S.N. ; Shriver, J.F.
Title
The role of salinity on the dynamics of the Arabian Sea mini warm pool
Type
$loc['typeJournal Article']
Year
2012
Publication
Journal of Geophysical Research: Oceans
Abbreviated Journal
J. Geophys. Res.
Volume
117
Issue
C9
Pages
n/a-n/a
Keywords
Arabian Sea ; Argo ; HYCOM ; SMOS ; salinity ; warm pool
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
0148-0227
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
271
Permanent link to this record