| Physical, Nutrient, and Biological Measurements of Coastal Waters off Central California in March 2012 |
Oct 2012 |
62 pages |
| Authors:
Thomas A Rago; Reiko Michisaki; Baldo Marinovic; Marguerite Blum; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF OCEANOGRAPHY
|
 | The results of analyses of hydrographic, nutrient, and biological data collected in coastal ocean waters off Central California in March 2012 aboard the R/V Point Sur are presented in both tabular and graphical form. The cruise departed from Moss Landing, California, and proceeded offshore along CalCOFI Line 67 to station 90. Additionally, ancillary Expendable Bathythermograph (XBT), Advanced Very High Resolution Radiometer (AVHRR) satellite imagery, Acoustic Doppler Current Profiler (ADCP), and ... |
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| Analysis of the Inshore California Current System Off Central California Using Naval Oceanographic Office Survey Data from 1997 to 2002 |
Sep 2012 |
167 pages |
| Authors:
Luke W Penrose; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Hydrographic measurements from ten Naval Oceanographic Office cruises during 1997-2002 were analyzed. Data included CTD soundings to 1000 dbar and shipboard ADCP current measurements. Water properties (pressure, spiciness, acceleration potential) were optimally interpolated onto the 26.0 kg/m3 and 26.8 kg/m3 isopycnal. Steric heights for the sea surface relative to 1000 dbar are compared with satellite altimeter measurements. Mean fields and their variability were described. The 26.8 kg/m3 isopycnal shoaled offshore, ... |
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| Joint Sensing/Sampling Optimization for Surface Drifting Mine Detection with High-Resolution Drift Model |
Sep 2012 |
101 pages |
| Authors:
Kristie M Colpo; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF OCEANOGRAPHY
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| Every mine countermeasure (MCM) operation is a balance of time versus risk. In attempting to reduce time and risk, it is in the interests of the MCM community to use unmanned, stationary sensors to detect and monitor drifting mines through harbor inlets and straits. A network of stationary sensors positioned along an area of interest could be critical in such a process by removing the MCM warfighter from a threat ... |
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| Evolution of Atmosphere and Ocean Boundary Layers from Aircraft Observations and Coupled COAMPS/NCOM |
Sep 2012 |
187 pages |
| Authors:
Heather R Hornick; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Strong offshore winds are frequently observed over the Gulf of Tehuantepec in the eastern Pacific Ocean when synoptic conditions create a cross-isthmus pressure gradient through the Chivela Pass in southern Mexico. During such high wind events, turbulent mixing and upwelling in the upper-ocean can reduce the sea-surface temperature by several degrees within hours of event onset. This research conducts an extensive analysis of aircraft measurements from the 2004 Gulf of ... |
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| Geometric Methods for Infinite-Dimensional Dynamical Systems |
27 Aug 2012 |
8 pages |
| Authors:
Bjorn Sandstede; BROWN UNIV PROVIDENCE RI DIV OF APPLIED MATHEMATICS
|
| This was a conference grant for the conference 'Geometric Methods for Infinite-Dimensional Dynamical Systems' held November 4-6, 2011 at Brown University. The plenary and topical talks formed the heart of the conference. They featured the four mathematical themes of the conference: data assimilation, geometric singular perturbation theory, nonlinear optics and traveling waves. |
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| Africa Partnership Station: Coastal Processes Large-Scale Coastal Evolution |
19 Jul 2012 |
4 pages |
| Authors:
Andrew D Ashton; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA
|
| The overreaching goal of this research is to assist with the development of research capabilities of Gulf of Guinea nations and to increase the ability of these nations to predict and mitigate coastal hazards. This is being accomplished through sponsoring and developing the coastal processes research capabilities of these nations and their university systems. This projects focuses on interactions with the research group within the Department of Oceanography and Fisheries ... |
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| Bayesian Hierarchical Model Characterization of Model Error in Ocean Data Assimilation and Forecasts |
Jul 2012 |
8 pages |
| Authors:
Ralph F Milliff; Christopher K Wikle; L M Berliner; Radu Herbei; NORTHWEST RESEARCH ASSOCIATES BOULDER CO COLORADO RESEARCH ASSOCIATES DIV
|
| We seek to focus quantitative uncertainty management attributes of the Bayesian Hierarchical Model (BHM) methodology on the identification, characterization, and evolution of irreducible model error in ocean data assimilation and forecast systems. Our project objectives are designed to build upon experience gained under prior Office of Naval Research (ONR) support. This annual report describes progress attained in projects led by PI Milliff in the first full year of funding. First ... |
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| The Equatorial Pacific Cold Tongue Simulated by IPCC AR4 Coupled GCMs: Upper Ocean Heat Budget and Feedback Analysis |
15 May 2012 |
21 pages |
| Authors:
Yangxing Zheng; Jia-Lin Lin; Toshiaki Shinoda; NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
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| This study examines the contribution of ocean dynamics to sea surface temperature (SST) biases in the eastern Pacific cold tongue region in fifteen coupled general circulation models (CGCMs) participating in the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4). Twenty years (1980-1999) of the twentieth-century (20C3m) climate simulations from each model are analyzed. An excessive and narrow SST cold tongue that extends too far west into the western ... |
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| An Improved Empirical Model for Radar Sea Clutter Reflectivity |
27 Apr 2012 |
46 pages |
| Authors:
Vilhelm Gregers-Hansen Rashmi; NAVAL RESEARCH LAB WASHINGTON DC
|
| The most fundamental characteristic of sea clutter, as used in radar performance evaluation, is its apparent reflectivity, used here as a reminder that any measurement of sea clutter reflectivity includes the effects of propagation and shadowing close to the sea surface. Sea clutter reflectivity depends on many factors including sea state, wind velocity, grazing angle, polarization and radar frequency. A comprehensive tabulation of measurements from approximately 60 sources is included ... |
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| Nearshore Sea Clutter Measurements from a Fixed Platform |
Apr 2012 |
30 pages |
| Authors:
Erin E Hackett; Anne M Fullerton; Craig F Merrill; Thomas C Fu; NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD
|
| This report describes a set of experiments performed in support of ONR's Environmental Sensing and Motion Forecast (ESMF) Program. The goal of the experiments was to obtaindata to evaluate the ability of low-grazing angle radars to provide near-field, nearreal time sea state data suitable for enabling a high-fidelity ship control system to control ship motion during Sea Basing ship-to-ship logistic operations in Sea State (SS) 4 and below. More specifically, ... |
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| Bayesian Hierarchical Models to Augment the Mediterranean Forecast System |
17 Feb 2012 |
20 pages |
| Authors:
Ralph F Milliff; Christopher K Wikle; L M Berliner; Emanuele Di Lorenzo; NORTHWEST RESEARCH ASSOCIATES INC BELLEVUE WA
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| The overall project goal has been to test the feasibility and practicality of Bayesian Hierarchical Model (BHM) methods in aspects of the Mediterranean Forecast System (MFS); an operational ocean data assimilation and forecast system. |
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| Characterization of Suspended Particulates in the Northern Gulf of Mexico from Ocean Color Remote Sensing |
15 Feb 2012 |
8 pages |
| Authors:
ZhongPing Lee; Changchun Huang; Bertrand Lubac; Laodong Guo; DongShan Ko; Steven Lohrenz; Richard Gould; NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
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| The ecosystem in the Northern Gulf of Mexico (NGOM) is composed of fresh waters from coastal run-offs and the Mississippi River as well as clear-salty waters from the gulf. As a result, the composition of water constituents, as well as their spatial and temporal distributions, is complex and heterogeneous, with severe hypoxia events constantly happening in the NGOM region. In this study, using properties derived from measurements of ocean color ... |
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| Multi- and Hyperspectral Ocean Color Measurements from Long Island Sound Observation Platform (LISCO): Comparison with Satellite Measurements and Assessments of Uncertainties |
09 Feb 2012 |
9 pages |
| Authors:
S A Ahmed; Robert A Arnone; A Gilerson; T Harmel; S Hlaing; T Legbrandt; Alan Weidemann; NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
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| The Long Island Sound Coastal Observational platform (LISCO) near Northport, New York, has been recently established to support satellite data validation LISCO is equipped with both multispectral SeaPRISM and hyperspectral HyperSAS radiometers for ocean color measurements. LISCO substantially expands observational capabilities for the continuous monitoring and assessment of the ocean color satellite data quality. These expanded capabilities offer a potential for improving calibration and validation activities for the current and ... |
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| Assessment of a Bidirectional Reflectance Distribution Correction of Above-Water and Satellite Water-Leaving Radiance in Coastal Waters |
10 Jan 2012 |
19 pages |
| Authors:
Soe Hlaing; Alexander Gilerson; Tristan Harmal; Alberto Tonizzo; Alan Weidemann; Robert Arnone; Samir Ahmed; NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
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| Water-leaving radiances, retrieved from in situ or satellite measurements, need to be corrected for the bidirectional properties of the measured light in order to standardize the data and make them comparable with each other. The current operational algorithm for the correction of bidirectional effects from the satellite ocean color data is optimized for typical oceanic waters. However, versions of bidirectional reflectance correction algorithms specifically tuned for typical coastal waters and ... |
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| Distribution, Abundance and Population Structuring of Beaked Whales in the Great Bahama Canyon, Northern Bahamas |
Jan 2012 |
20 pages |
| Authors:
Diane E Claridge; John W Durban; Phillip Morin; Gina Ylitalo; David Herman; BAHAMAS MARINE MAMMAL RESEARCH ORGANISATION ABACO (BAHAMAS)
|
| Atypical mass strandings and behavioral responses of beaked whales have been correlated with naval sonar (e.g. Simmonds and Lopez-Juraco 1991; Frantzis 1998; Evans and England 2001, Cox et al. 2006, Tyack et al. 2011), highlighting a need for a fuller understanding of beaked whale population ecology. This project is filling key data gaps on the distribution, abundance, and population structuring of beaked whales in the Great Bahama Canyon. The study ... |
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| Assessing Beaked Whale Reproduction and Stress Response Relative to Sonar Activity at the Atlantic Undersea Test and Evaluation Center (AUTEC) |
Jan 2012 |
12 pages |
| Authors:
Diane E Claridge; Nick Kellar; John W Durban; BAHAMAS MARINE MAMMAL RESEARCH ORGANISATION ABACO (BAHAMAS)
|
| Atypical mass strandings and behavioral responses of beaked whales have been correlated with exposure to naval sonar (e.g. Simmonds and Lopez-Juraco 1991; Frantzis 1998; Evans and England 2001), highlighting a need to understand the potential physiological impacts to individual whales and if these in turn represent a biologically significant threat to exposed populations. The long-term goal of this study is to assess glucocorticoid levels from blubber biopsies of targeted species, ... |
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| Population Consequences of Acoustic Disturbance of Blainville's Beaked Whales at AUTEC |
Jan 2012 |
7 pages |
| Authors:
Diane E Claridge; Charlotte A Dunn; BAHAMAS MARINE MAMMAL RESEARCH ORGANISATION ABACO (BAHAMAS)
|
| Atypical strandings and behavioral responses of beaked whales have been associated with the use of Navy mid-frequency active (MFA) sonar (e.g. Simmonds and Lopez-Juraco 1991, Evans and England 2001, McCarthy et al. 2011, Tyack et al. 2011). Yet MFA sonar operations occur repeatedly on Navy ranges that are known beaked whale habitat. The Bahamas Marine Mammal Research Organisation (BMMRO) has been studying beaked whales in the northern Bahamas (Claridge 2006), ... |
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| Ocean Data Quality Control |
18 Nov 2011 |
33 pages |
| Authors:
James A Cummings; NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
|
| Automated ocean data quality procedures are presented. The procedures are logically grouped into four stages of processing, which when taken together form a complete sensor-to-protection quality control system. The main features of the different ocean observing systems assimilated by GODAE are presented along with sources and types of errors that can occur in the data. Specific quality control procedures are described that test for these errors as well as more ... |
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| Acoustic Metadata Management and Transparent Access to Networked Oceanographic Data Sets |
30 Sep 2011 |
9 pages |
| Authors:
Marie A Roch; Simone Baumann-Pickering; Catherine L Berchok; John A Hildebrand; Erin M Oleson; Sofie M Van Parijs; SAN DIEGO STATE UNIV CA DEPT OF COMPUTER SCIENCES
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| The long-term goals of this effort are to produce software capable of organizing and archiving metadata associated with the detection of marine mammals. The focus is on acoustic detections, but other modalities of detection as well as measurements such as conductivity, temperature, and depth (CTD) casts are included. In addition, the software provides interfaces to access oceanographic measurements from other data repositories in a transparent manner. Data shall be accessible ... |
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| Developing ChemFin(Trademark), a Miniature Biogeochemical Sensor Payload for Gliders, Profilers, and other AUVs |
30 Sep 2011 |
8 pages |
| Authors:
Alfred K Hanson; Anne Kusterbeck; SUBCHEM SYSTEMS INC NARRAGANSETT RI
|
| The first goal of this project involves the further development and transition of ChemFIN(trademark), a prototype autonomous profiling sensor for chemicals and biomolecules, into a commercial product that can be readily deployed on fixed or mobile ocean observation platforms such as coastal gliders, profiling moorings, and propeller driven unmanned underwater vehicles (UUVs). The second goal of this project is to integrate a flow immunosensor technology (i.e. biosensor), developed by researchers ... |
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| Combining Ensemble and Variational Data Assimilation |
30 Sep 2011 |
8 pages |
| Authors:
Peter R Oke; Alexandre Kurapov; OREGON STATE UNIV CORVALLIS COLL OF OCEANIC AND ATMOSPHERIC SCIENCES
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| The long-term goal of this project is to develop and apply practical methods for data assimilation to improve the short-range prediction of mesoscale ocean variability. The primary objective of this work is to develop an ocean data assimilation system that exploits the strengths of both the ensemble-based (e.g., Evensen 2003; Houtekamer and Mitchell 1998; Tippett et al. 2003) and variational (e.g., Bennett 2002) approaches to data assimilation. The first step ... |
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| Lagrangian Turbulence and Transport in Semi-enclosed Basins and Coastal Regions |
30 Sep 2011 |
11 pages |
| Authors:
Annalisa Griffa; Tamay M Ozgokmen; ROSENSTIEL SCHOOL OF MARINE AND ATMOSPHERIC SCIENCE MIAMI FL DIV OF METEOROLOGY AND PHYSICAL OCEANOGRAPHY
|
| The long-term goal of this project is the development and application of new methods of investigation for the use of Lagrangian data and other emerging in-situ and remote instruments (drifters, HF radar, gliders and satellite) that provide information on upper ocean advection. Special attention is given to the development of new techniques for data analysis and prediction of Lagrangian transport in coastal flows. |
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| In-Situ Wave Observations in the High Resolution Air-Sea Interaction DRI |
30 Sep 2011 |
8 pages |
| Authors:
Thomas H Herbers; Tim T Janssen; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF OCEANOGRAPHY
|
| Ocean wave prediction models, based on a spectral energy balance, are widely used to obtain wind-wave forecasts and hindcasts on global and regional scales (e.g., Komen et al., 1994). However, these inherently stochastic models assume a Gaussian and homogeneous sea state and thus do not describe the nonlinear instability processes that can dramatically alter the structure of wave groups and produce anomalously large waves, also known as freak or rogue ... |
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| A Profiling Float System in the Origins of the Kuroshio and Mindanao Current |
30 Sep 2011 |
3 pages |
| Authors:
Daniel L Rudnick; SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA
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| The long-term goal of this work is to improve and validate techniques for observing energetic western boundary currents. In this DURIP, we plan to acquire a profiling float system consisting of 20 newly developed SOLO-II floats. The deployment of these floats in the Origins of the Kuroshio and Mindanao Current (OKMC) DRI is in service of this goal. The overarching objective of OKMC is to quantify the processes leading to ... |
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| Lateral Coherence and Mixing in the Coastal Ocean: Adaptive Sampling using Gliders |
30 Sep 2011 |
5 pages |
| Authors:
R K Shearman; Jonathan D Nash; James N Moum; John A Barth; OREGON STATE UNIV CORVALLIS COLL OF OCEANIC AND ATMOSPHERIC SCIENCES
|
| Lateral mixing is driven through the interplay between finescale isopycnal stirring (shear + strain) and small-scale diapycnal turbulence. We seek to understand this interplay within highly anisotropic coherent structures, such as fronts, jets, eddies and filaments, which likely control lateral dispersion in both coastal and open ocean. These structures evolve yet are often persistent on O (3 day) timescales, so are ideally suited to be adaptively sampled by autonomous gliders ... |
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| Africa Partnership Station: Coastal Processes |
30 Sep 2011 |
4 pages |
| Authors:
Andrew Ashton; Cheryl Hapke; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA
|
| The overreaching goal of this research is to assist with the development of research capabilities of Gulf of Guinea nations and to increase the ability of these nations to predict and mitigate coastal hazards. This is being accomplished through sponsoring and developing the coastal processes research capabilities of these nations and their university systems. This projects focuses on interactions with the research group within the Department of Oceanography and Fisheries ... |
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| A System for Improved Prediction of Ocean Optical Properties |
30 Sep 2011 |
5 pages |
| Authors:
Emmanuel Boss; MAINE UNIV AT ORONO SCHOOL OF MARINE SCIENCES
|
| A system is proposed that will measure oceanic optical properties from a variety of platforms and will allow for improved quantification of their relationships to parameters retrieved from ocean-color remote sensing and in-situ oceanic processes (i.e. the dynamics of particulate and dissolved matter). Improvement will come primarily from increase in optical data currently limited in space and time (e.g. weighed heavily towards the summer in the Atlantic). The system involves ... |
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| Physical-Biological-Optics Model Development and Simulation for the Pacific Ocean and Monterey Bay, California |
30 Sep 2011 |
11 pages |
| Authors:
Fei Chai; Emmanuel Boss; MAINE UNIV AT ORONO SCHOOL OF MARINE SCIENCES
|
| Modeling and predicting ocean optical properties requires linking optical properties with the physical, chemical, and biological processes in the upper ocean. Our long-term goal is to incorporate optical processes into coupled physical-biological models for both open ocean and coastal waters, develop and improve integrated ocean forecasting systems, including prediction of ocean optical properties. |
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| Imaging System Performance and Visibility as Affected by the Physical Environment |
30 Sep 2011 |
10 pages |
| Authors:
Grace Chang; SEA ENGINEERING INC SANTA CRUZ CA
|
| The long-term goal of Imaging System Performance and Visibility as Affected by the Physical Environment is to investigate the relationships between physical forcing and optical properties, including the imaging performance parameters. Our efforts are aimed at supporting the Radiance in a Dynamic Ocean (RaDyO) program, which is devoted to the topic of light propagation and imaging across the air-sea interface and within the surface boundary layer of natural water bodies. ... |
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| A Chromophoric Dissolved Organic Matter (CDOM) Observatory |
30 Sep 2011 |
9 pages |
| Authors:
Robert F Chen; G B Gardner; Yong Tian; MASSACHUSETTS UNIV BOSTON DEPT OF ENVIRONMENTAL EARTH AND OCEAN SCIENCES
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| The long-term goal of this project is to develop an understanding of coastal systems such that optical properties of complex coastal waters can be retrieved and predicted from remote sensing and modeling efforts. |
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| The Secretary of the Navy/Chief of Naval Operations Chair in Oceanographic Sciences |
30 Sep 2011 |
6 pages |
| Authors:
T Dickey; CALIFORNIA UNIV SANTA BARBARA DEPT OF GEOGRAPHY
|
| The general long-term research objective for this work is to advance understanding and predictive capabilities in three areas: 1) upper ocean physical, bio-optical, and biogeochemical responses to intense wind events including hurricanes and typhoons, 2) coastal optics, physical thermodynamics and dynamics, turbulence, internal gravity waves, sediment transport, and harmful algal blooms, and 3) the physical, bio-optical, and biogeochemical dynamics of ocean mesoscale eddies. The overall educational objective is to contribute ... |
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| Wave Induced Bubble Clouds and their Effect on Radiance in the Upper Ocean |
30 Sep 2011 |
5 pages |
| Authors:
David M Farmer; Svein Vagle; RHODE ISLAND UNIV NARRAGANSETT GRADUATE SCHOOL OF OCEANOGRAPHY
|
| The goal of this project is to measure wave induced bubble clouds and their effect on radiance in the upper ocean. Our aim is to address the fact that despite the fundamental importance of optical backscatter in the ocean it is still not possible to explain more than 5 to 10 percent of the particulate backscattering in the ocean based on known constituents (even during periods with no active wave ... |
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| High Resolution Time Series Observations and Modeling of Radiance, Optical Properties, and Physical Processes as Part of RaDyO |
30 Sep 2011 |
7 pages |
| Authors:
Tommy D Dickey; CALIFORNIA UNIV SANTA BARBARA DEPT OF GEOGRAPHY
|
| The overall goal of the University of California Santa Barbara (UCSB) Ocean Physics Laboratory (OPL) Radiance in a Dynamic Ocean (RaDyO) project is to contribute to the understanding and prediction of variations in radiance distributions as they are affected by physical forcing and physical and optical conditions of the surface boundary layer (SBL) and the upper ocean. The purpose of our research is to obtain, analyze, and model time series ... |
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| Ocean Coupling to Topographically-Enhanced Atmospheric Flow |
30 Sep 2011 |
|
| Authors:
Julie Pullen; STEVENS INST OF TECHNOLOGY HOBOKEN NJ
|
| The long-term goal of this project is to understand and predict oceanic and atmospheric processes in coastal areas where winds are topographically steered and strengthened. The proposed work aims to probe details of the interaction of mountainous island terrain with synoptic and intra-seasonal disturbances, and the associated ocean response and feedback. The research questions include the following: (1) How do intra-seasonal and synoptic disturbances combine to generate spatial/temporal variability of ... |
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| Western North Pacific Tropical Cyclone Formation and Structure Change in TCS-08 |
30 Sep 2011 |
7 pages |
| Authors:
Patrick A Harr; Russell L Elsberry; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF METEOROLOGY
|
| The long-term goal of this project is to develop a better understanding of mesoscale and synoptic-scale processes associated with the entire life cycle of tropical cyclones in the western North Pacific. The inability to correctly identify tropical cyclone formation over the period of 24 to 48 hours poses a threat to shore and afloat assets across the western North Pacific. Furthermore, once a tropical cyclone has formed, the predictability of ... |
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| COAMPS User Support |
30 Sep 2011 |
7 pages |
| Authors:
Yi Jin; NAVAL RESEARCH LAB MONTEREY CA
|
| The long-term goal of this project is to continue to provide support (e.g., consultation, code updates, training, data transfer, etc.) for those users of the Coupled Ocean/Atmosphere Mesoscale Prediction System (COAMPS (trademark)) who obtain the system through the release of the code as determined by release guidelines. The active distribution of COAMPS to the general scientific community cannot be accomplished without support from NRL-Monterey. To fully realize the development potential ... |
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| Implementation of the Automated Numerical Model Performance Metrics System |
26 Sep 2011 |
31 pages |
| Authors:
James D Dykes; NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
|
| Known as AutoMetrics, this set of software modules was developed to provide model-observation and model-model comparison matchups and statistics to help modellers and forecasters assess the performance of ocean circulation models, primarily the Navy Coastal Ocean Model (NCOM) and the Hybrid Coordinate Ocean Model (HYCOM). This system is fully automatic and gives users much flexibility in what model runs to be evaluated by this system, in real-time operations or for ... |
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| Physical, Nutrient, and Biological Measurements of Coastal Waters off Central California in November 2010 |
20 Sep 2011 |
88 pages |
| Authors:
Thomas A Rago; Reiko Michisaki; Baldo Marinovic; Marguerite Blum; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF OCEANOGRAPHY
|
| The results of analyses of hydrographic, nutrient, and biological data collected in coastal ocean waters off Central California in November 2010 aboard the R/V Point Sur are presented in both tabular and graphical form. The cruise departed from Moss Landing, California, and proceeded offshore along CalCOFI Line 67 to station 90, thence northwestward to CalCOFI Line 60 at station 90, and finally shoreward along CalCOFI Line 60 to Drakes Bay, ... |
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| The ROMS IAS Data Assimilation and Prediction System: Quantifying Uncertainty |
13 Sep 2011 |
5 pages |
| Authors:
Andrew M Moore; Brian S Powell; CALIFORNIA UNIV SANTA CRUZ DEPT OF OCEAN SCIENCES
|
| The main objectives of this project were: (i) to assess the impact of observations on ocean state estimates and the ensuing forecasts; (ii) to quantify the expected errors in 4-dimensional variational (4D-Var) ocean circulation estimates: and (iii) to develop multimodel ensemble and superensemble methods for ocean models. The primary tool used in this project was the Regional Ocean Modeling System (ROMS). To address the aforementioned goals and objectives, we used ... |
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| Real-time Data Assimilation of Satellite Derived Ice Concentration into the Arctic Cap Nowcast/Forecast System (ACNFS) |
Sep 2011 |
5 pages |
| Authors:
P G Posey; D A Hebert; E J Metzger; A J Wallcraft; J A Cummings; R H Preller; O M Smedstad; M W Phelps; NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS
|
| Over the last decade, ice conditions in the Arctic have changed dramatically resulting in the Arctic having a minimum in ice extent during the summers of 2007, 2008 and 2010. With this rapidly changing polar environment, the need for accurate ice forecasts is essential. The Naval Research Laboratory (NRL) has developed the Arctic Cap Nowcast/Forecast System (ACNFS), a two-way coupled ice/ocean system, to forecast ice conditions in the polar regions. ... |
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| Propagation and Evolution of Coastal Nonlinear Internal Waves |
03 Aug 2011 |
3 pages |
| Authors:
Frank S Henyey; WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
|
| The major focus of the work is an experiment using a towed CTD chain as part of' the SW06 experiment. A number of events were measured. Most of the time we were following some wave packet, repeatedly measuring it. We had intended to follow each packet for a long distance, but packets were frequently merging with others, and the resulting merged packet had more energy than the one we had ... |
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| Validation Test Report for the Tidal Open-Boundary Prediction System (TOPS) |
30 Jun 2011 |
67 pages |
| Authors:
Paul J Martin; Scott R Smith; Gretchen M Dawson; Pamela G Posey; Edward D Zaron; NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
|
| This Validation Test Report presents tests of the use of the Oregon State University (OSU) Tidal Inversion Software (OTIS) to provide tidal boundary conditions (BCs) for the Navy Coastal Ocean Model (NCOM) in several regional and coastal domains. OTIS is a set of programs designed to generate optimal tidal solutions within an ocean domain by 4D variational assimilation of tidal data from various sources, including satellite altimetry and coastal tide ... |
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| Operational Planning with Uncertain and Ambiguous Information: Command and Control and the Natural Environment |
JUN 2011 |
45 pages |
| Authors:
Karl D. Pfeiffer; Susan G. Hutchins; David L. Kleinman; Scot Miller; William G. Kemple; NAVAL POSTGRADUATE SCHOOL MONTEREY CA GRADUATE SCHOOL OF OPERATIONAL AND INFORMATION SCIENCES
|
| Operational planners, particularly military planners, are often faced with constructing a plan using ambiguous data in highly complex or rapidly evolving situations. Environmental information represents a particular challenge for planners. The state of the art in geophysical fluid dynamics leaves significant uncertainty in forecast conditions. Even with perfect knowledge of the future state of ocean and atmosphere, translating these conditions into mission impacts can be difficult and can result in ... |
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| Near-Inertial Wave Studies Using Historical Mooring Records and a High-Resolution General Circulation Model |
25 Apr 2011 |
6 pages |
| Authors:
Matthew H Alford; Harper Simmons; WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
|
| Knowledge of internal waves and ocean mixing is important f()r advancing the performance of operational and climate models, as well as for understanding local problems such as pollutant dispersal and biological productivity. Consequently, a long-term goal of the oceanographic community has been to develop a global internal wave prediction system analogous to systems already in place for surfuce waves. Early steps have been accomplished with simulations of internal tides at ... |
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| R/V Point Sur Ship Operations |
07 APR 2011 |
4 pages |
| Authors:
Stewart Lamerdin; MOSS LANDING MARINE LABS CA
|
| This report documents the use of funds awarded by Office of Naval Research (ONR) for the continued operational support of the Research Vessel Pt. Sur and the associated Marine Technician Program for Calendar Year 2010. |
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| Physical, Nutrient, and Biological Measurements of Coastal Waters off Central California in July 2010 |
APR 2011 |
109 pages |
| Authors:
Thomas A. Rago; Reiko Michisaki; Baldo Marinovic; Marguerite Blum; Katherine Whitaker; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF OCEANOGRAPHY
|
| The results of analyses of hydrographic, nutrient, and biological data collected in coastal ocean waters off Central California in July 2010 aboard the NOAA Ship McArthur-II are presented in both tabular and graphical form. The cruise departed from San Francisco, California, and proceeded offshore along CalCOFI Line 60 to station 90, thence southeastward to CalCOFI Line 67 at station 90, and finally shoreward along CalCOFI Line 67 to Moss Landing, ... |
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| Remote Sensing and Modeling of Coherent Structures in River and Estuarine Flows |
31 MAR 2011 |
6 pages |
| Authors:
Andrew T. Jessup; Robert L. Street; Stephen G. Monismith; Alexander R. Horner-Devine; WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
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| The COHSTREX (Coherent Structures in Rivers and Estuaries Experiment) project was implemented to determine the extent to which the remotely-sensed signatures of coherent structures can be used to initialize and constrain predictive models for river and estuarine flows. Infrared and microwave techniques that are mature and proven were used to detect and quantify coherent structures. An existing set of sophisticated codes for accurate simulation of three-dimensional unsteady fluid motions and ... |
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| LES Modeling of Lateral Dispersion in the Ocean on Scales of 10 m to 10 km |
30 MAR 2011 |
2 pages |
| Authors:
Marie-Pascale Lelong; NORTHWEST RESEARCH ASSOCIATES INC BELLEVUE WA
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| The long-term goal of this effort is to develop scalable, physically based parameterizations for lateral mixing in the stratified ocean on scales of 0.1-10km that can be implemented in larger-scale ocean models. These parameterizations will incorporate the effects of local ambient conditions including latitude, mean stratification and mesoscale flows. Another ultimate goal is to develop a more comprehensive picture of horizontal and vertical mixing processes in the ocean. |
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| Dynamic Topography of the Bering Sea |
Jan 2011 |
12 pages |
| Authors:
Gleb Panteleev; Max Yaremchuk; Phyllis J Stabeno; Vladimir Luchin; Dmitri A Nechaev; Takashi Kikuchi; NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
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| A new mean dynamic topography (MDT) for the Bering Sea is presented. The product is obtained by combining historical oceanographic and atmospheric observations with high-resolution model dynamics in the framework of a variational technique. Eighty percent of the ocean data underlying the MDT were obtained during the last 25 years and include hydrographic profiles, surface drifter trajectories, and in situ velocity observations that were combined with National Centers for Environmental ... |
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| Global Shallow-Water Bathymetry from Satellite Ocean Color Data |
16 NOV 2010 |
3 pages |
| Authors:
ZhongPing Lee; Chuanmin Hu; Brandon Casey; Shaoling Shang; Heidi Dierssen; Robert Arnone; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
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| Knowledge of ocean bathymetry is important not only for navigation but also for scientific studies of the ocean's volume, ecology, and circulation. All of which are related to Earth's climate. In coastal regions, moreover, detailed bathymetric maps are critical for storm surge modeling, marine power plant planning, understanding of ecosystem connectivity, coastal management, and change analyses. Because ocean areas are enormously large and ship surveys have limited coverage adequate bathymetric ... |
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