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Author
Morey, S. ; Wienders, N. ; Dukhovskoy, D. ; Bourassa, M.
Title
Measurement Characteristics of Near-Surface Currents from Ultra-Thin Drifters, Drogued Drifters, and HF Radar
Type
$loc['typeJournal Article']
Year
2018
Publication
Remote Sensing
Abbreviated Journal
Remote Sensing
Volume
10
Issue
10
Pages
1633
Keywords
surface drifters ; surface currents ; HF Radar
Abstract
Concurrent measurements by satellite tracked drifters of different hull and drogue configurations and coastal high-frequency radar reveal substantial differences in estimates of the near-surface velocity. These measurements are important for understanding and predicting material transport on the ocean surface as well as the vertical structure of the near-surface currents. These near-surface current observations were obtained during a field experiment in the northern Gulf of Mexico intended to test a new ultra-thin drifter design. During the experiment, thirty small cylindrical drifters with 5 cm height, twenty-eight similar drifters with 10 cm hull height, and fourteen drifters with 91 cm tall drogues centered at 100 cm depth were deployed within the footprint of coastal High-Frequency (HF) radar. Comparison of collocated velocity measurements reveals systematic differences in surface velocity estimates obtained from the different measurement techniques, as well as provides information on properties of the drifter behavior and near-surface shear. Results show that the HF radar velocity estimates had magnitudes significantly lower than the 5 cm and 10 cm drifter velocity of approximately 45% and 35%, respectively. The HF radar velocity magnitudes were similar to the drogued drifter velocity. Analysis of wave directional spectra measurements reveals that surface Stokes drift accounts for much of the velocity difference between the drogued drifters and the thin surface drifters except during times of wave breaking.
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
2072-4292
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ rl18 @
Serial
987
Permanent link to this record
Author
Morey, S. ; Wienders, N. ; Dukhovskoy, D. ; Bourassa, M.
Title
Measurement Characteristics of Near-Surface Currents from Ultra-Thin Drifters, Drogued Drifters, and HF Radar
Type
$loc['typeJournal Article']
Year
2018
Publication
Remote Sensing
Abbreviated Journal
Remote Sensing
Volume
10
Issue
10
Pages
1633
Keywords
surface drifters ; surface currents ; HF Radar ; STOKES DRIFT ; SEA-SURFACE ; WAVES ; BREAKING ; VALIDATION ; TRANSPORT
Abstract
Concurrent measurements by satellite tracked drifters of different hull and drogue configurations and coastal high-frequency radar reveal substantial differences in estimates of the near-surface velocity. These measurements are important for understanding and predicting material transport on the ocean surface as well as the vertical structure of the near-surface currents. These near-surface current observations were obtained during a field experiment in the northern Gulf of Mexico intended to test a new ultra-thin drifter design. During the experiment, thirty small cylindrical drifters with 5 cm height, twenty-eight similar drifters with 10 cm hull height, and fourteen drifters with 91 cm tall drogues centered at 100 cm depth were deployed within the footprint of coastal High-Frequency (HF) radar. Comparison of collocated velocity measurements reveals systematic differences in surface velocity estimates obtained from the different measurement techniques, as well as provides information on properties of the drifter behavior and near-surface shear. Results show that the HF radar velocity estimates had magnitudes significantly lower than the 5 cm and 10 cm drifter velocity of approximately 45% and 35%, respectively. The HF radar velocity magnitudes were similar to the drogued drifter velocity. Analysis of wave directional spectra measurements reveals that surface Stokes drift accounts for much of the velocity difference between the drogued drifters and the thin surface drifters except during times of wave breaking.
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
2072-4292
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ rl18 @
Serial
985
Permanent link to this record
Author
Morey, S.L. ; Baig, S. ; Bourassa, M.A. ; Dukhovskoy, D.S. ; O'Brien, J.J.
Title
Remote forcing contribution to storm-induced sea level rise during Hurricane Dennis
Type
$loc['typeJournal Article']
Year
2006
Publication
Geophysical Research Letters
Abbreviated Journal
Geophys. Res. Lett.
Volume
33
Issue
19
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
0094-8276
ISBN
Medium
Area
Expedition
Conference
Funding
NOAA, NASA, OVWST
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
433
Permanent link to this record
Author
Morey, S.L. ; Bourassa, M.A. ; Dukhovskoy, D.S. ; O'Brien, J.J.
Title
Modeling studies of the upper ocean response to a tropical cyclone
Type
$loc['typeJournal Article']
Year
2006
Publication
Ocean Dynamics
Abbreviated Journal
Ocean Dynamics
Volume
56
Issue
5-6
Pages
594-606
Keywords
air-sea interaction ; tropical cyclones ; ocean modeling ; air-sea fluxes
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
1616-7341
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
432
Permanent link to this record
Author
Morey, S.L. ; Dukhovskoy, D.S.
Title
A downscaling method for simulating deep current interactions with topography – Application to the Sigsbee Escarpment
Type
$loc['typeJournal Article']
Year
2013
Publication
Ocean Modelling
Abbreviated Journal
Ocean Modelling
Volume
69
Issue
Pages
50-63
Keywords
Ocean modeling ; Model nesting ; Topographic flows ; USA ; Gulf of Mexico ; Sigsbee Escarpment
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
1463-5003
ISBN
Medium
Area
Expedition
Conference
Funding
DeepStar, HYCOM Consortium
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
183
Permanent link to this record
Author
Morey, S.L. ; Dukhovskoy, D.S.
Title
Analysis Methods for Characterizing Salinity Variability from Multivariate Time Series Applied to the Apalachicola Bay Estuary
Type
$loc['typeJournal Article']
Year
2012
Publication
Journal of Atmospheric and Oceanic Technology
Abbreviated Journal
J. Atmos. Oceanic Technol.
Volume
29
Issue
4
Pages
613-628
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
0739-0572
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
253
Permanent link to this record
Author
Morey, S.L. ; Dukhovskoy, D.S. ; Bourassa, M.A.
Title
Connectivity of the Apalachicola River flow variability and the physical and bio-optical oceanic properties of the northern West Florida Shelf
Type
$loc['typeJournal Article']
Year
2009
Publication
Continental Shelf Research
Abbreviated Journal
Continental Shelf Research
Volume
29
Issue
9
Pages
1264-1275
Keywords
River plumes ; Climate variability ; Ocean color ; West Florida Shelf ; Apalachicola River
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
NASA, OVWST
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
393
Permanent link to this record
Author
Morey, SL ; Dukhovskoy, DS
Title
A Multi-Model Nesting Approach for Simulating Deep Ocean Dynamics and Topographic Interactions
Type
$loc['typeConference Article']
Year
2011
Publication
OCEANS 2011
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
MTS/IEEE OCEANS Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
316
Permanent link to this record
Author
Morrison, T. ; Dukhovskoy, D. S. ; McClean, J. ; Gille, S. T. ; Chassignet, E.
Title
Causes of the anomalous heat flux onto the Greenland continental shelf
Type
$loc['typeAbstract']
Year
2018
Publication
American Geophysical Union
Abbreviated Journal
AGU
Volume
Fall Meeting
Issue
Pages
Keywords
0726 Ice sheets, CRYOSPHEREDE: 4207 Arctic and Antarctic oceanography, OCEANOGRAPHY: GENERALDE: 4215 Climate and interannual variability, OCEANOGRAPHY: GENERALDE: 4255 Numerical modeling, OCEANOGRAPHY: GENERAL
Abstract
On the continental shelf around Greenland, warm-salty Atlantic water at depth fills the deep narrow fjords where Greenland's tidewater glaciers terminate. Changes in the quantity or properties of this water mass starting in the mid 1990s is thought to be largely responsible for increased ocean-driven melting of the Greenland Ice Sheet. Using high-resolution (nominal 0.1-degree) ocean circulation models we cannot accurately resolve small-scale processes on the shelf or within fjords. However, we can assess changes in the flux of heat via Atlantic water onto the continental shelf. To understand the causes of the anomalous heat that has reached the shelf we examine heat content of subtropical gyre water and shifts in the North Atlantic and Atlantic Multidecadal Oscillations. We compare changes in heat transport in two eddy permitting simulations: a global 0.1 degree (5-7km around Greenland) resolution coupled hindcast (1970-2009) simulation of the Parallel Ocean Program (POP) and a regional 0.08 degree (3-5km around Greenland) resolution coupled HYbrid Coordinate Ocean Model (HYCOM) hindcast (1993-2016) simulation. Both models are coupled to the Los Alamos National Laboratory Community Ice CodE version 4 and forced by atmospheric reanalysis fluxes. In both models we look for processes that could explain the increase in heat; processes that are present in both are likely to be robust causes of warming.
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
1009
Permanent link to this record
Author
Nedbor-Gross, R. ; Dukhovskoy, D.S. ; Bourassa, M.A. ; Morey, S.L. ; Chassignet, E.P.
Title
Investigation of the Relationship Between the Yucatan Channel Transport and the Loop Current Area in a Multidecadal Numerical Simulation
Type
$loc['typeJournal Article']
Year
2014
Publication
Marine Technology Society Journal
Abbreviated Journal
Mar Technol Soc J
Volume
48
Issue
4
Pages
15-26
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
0025-3324
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
145
Permanent link to this record