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Author Davidson, F. ; Alvera-Azcárate, A. ; Barth, A. ; Brassington, G.B. ; Chassignet, E.P. ; Clementi, E. ; De Mey-Frémaux, P. ; Divakaran, P. ; Harris, C. ; Hernandez, F. ; Hogan, P. ; Hole, L.R. ; Holt, J. ; Liu, G. ; Lu, Y. ; Lorente, P. ; Maksymczuk, J. ; Martin, M. ; Mehra, A. ; Melsom, A. ; Mo, H. ; Moore, A. ; Oddo, P. ; Pascual, A. ; Pequignet, A.-C. ; Kourafalou, V. ; Ryan, A. ; Siddorn, J. ; Smith, G. ; Spindler, D. ; Spindler, T. ; Stanev, E.V. ; Staneva, J. ; Storto, A. ; Tanajura, C. ; Vinayachandran, P.N. ; Wan, L. ; Wang, H. ; Zhang, Y. ; Zhu, X. ; Zu, Z.
Title Synergies in Operational Oceanography: The Intrinsic Need for Sustained Ocean Observations Type $loc['typeJournal Article']
Year 2019 Publication Frontiers in Marine Science Abbreviated Journal Front. Mar. Sci.
Volume 6
Issue Pages
Keywords
Abstract Operational oceanography can be described as the provision of routine oceanographic information needed for decision-making purposes. It is dependent upon sustained research and development through the end-to-end framework of an operational service, from observation collection to delivery mechanisms. The core components of operational oceanographic systems are a multi-platform observation network, a data management system, a data assimilative prediction system, and a dissemination/accessibility system. These are interdependent, necessitating communication and exchange between them, and together provide the mechanism through which a clear picture of ocean conditions, in the past, present, and future, can be seen. Ocean observations play a critical role in all aspects of operational oceanography, not only for assimilation but as part of the research cycle, and for verification and validation of products. Data assimilative prediction systems are advancing at a fast pace, in tandem with improved science and the growth in computing power. To make best use of the system capability these advances would be matched by equivalent advances in operational observation coverage. This synergy between the prediction and observation systems underpins the quality of products available to stakeholders, and justifies the need for sustained ocean observations. In this white paper, the components of an operational oceanographic system are described, highlighting the critical role of ocean observations, and how the operational systems will evolve over the next decade to improve the characterization of ocean conditions, including at finer spatial and temporal scales.
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 2296-7745
ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ user @
Serial 1083
Permanent link to this record
Author Davis, S. R. ; Bourassa, M. A. ; Atlas, R. ; Ardizzone, J. ; Brin, E. ; O'Brien, J. J. ; Zierden, D. F.
Title Near-realtime sea surface pressure Fields from NASA's SeaWinds scatterometer and their impact in NWP Type $loc['typeReport']
Year 2003 Publication Abbreviated Journal
Volume Issue Pages 01:20-21
Keywords
Abstract
Address
Corporate Author Thesis
Publisher World Meteorological Organization
Place of Publication Geneva, Switzerland
Editor Ritchie, H.
Language Summary Language Original Title
Series Editor Series Title CAS/JSC Working Group on Numerical Experimentation, Research Activities in Atmospheric and Oceanic Modeling
Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @
Serial 876
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Author Deng, J. ; Wu, Z. ; Zhang, M. ; Huang, N.E. ; Wang, S. ; Qiao, F.
Title Using Holo-Hilbert spectral analysis to quantify the modulation of Dansgaard-Oeschger events by obliquity Type $loc['typeJournal Article']
Year 2018 Publication Quaternary Science Reviews Abbreviated Journal Quaternary Science Reviews
Volume 192
Issue Pages 282-299
Keywords Pleistocene ; Paleoclimatology ; Greenland ; Antarctica ; Data treatment ; Data analysis ; Dansgaard-oeschger (DO) events ; Obliquity forcing ; Phase preference ; Holo-hilbert spectral analysis ; Amplitude modulation ; EMPIRICAL MODE DECOMPOSITION ; GREENLAND ICE-CORE ; NONSTATIONARY TIME-SERIES ; ABRUPT CLIMATE-CHANGE ; LAST GLACIAL PERIOD ; NORTH-ATLANTIC ; MILLENNIAL-SCALE ; RECORDS ; VARIABILITY ; CYCLE
Abstract Astronomical forcing (obliquity and precession) has been thought to modulate Dansgaard-Oeschger (DO) events, yet the detailed quantification of such modulations has not been examined. In this study, we apply the novel Holo-Hilbert Spectral Analysis (HHSA) to five polar ice core records, quantifying astronomical forcing's time-varying amplitude modulation of DO events and identifying the preferred obliquity phases for large amplitude modulations. The unique advantages of HHSA over the widely used windowed Fourier spectral analysis for quantifying astronomical forcing's nonlinear modulations of DO events is first demonstrated with a synthetic data that closely resembles DO events recorded in Greenland ice cores (NGRIP, GRIP, and GISP2 cores on GICC05 modelext timescale). The analysis of paleoclimatic proxies show that statistically significantly more frequent DO events, with larger amplitude modulation in the Greenland region, tend to occur in the decreasing phase of obliquity, especially from its mean value to its minimum value. In the eastern Antarctic, although statistically significantly more DO events tend to occur in the decreasing obliquity phase in general, the preferred phase of obliquity for large amplitude modulation on DO events is a segment of the increasing phase near the maximum obliquity, implying that the physical mechanisms of DO events may be different for the two polar regions. Additionally, by using cross-spectrum and magnitude-squared analyses, Greenland DO mode at a timescale of about 1400 years leads the Antarctic DO mode at the same timescale by about 1000 years. (C) 2018 Elsevier Ltd. All rights reserved.
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Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0277-3791
ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ user @
Serial 971
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Author Deng, J. ; Wu, Z. ; Zhang, M. ; Huang, N.E. ; Wang, S. ; Qiao, F.
Title Data concerning statistical relation between obliquity and Dansgaard-Oeschger events Type $loc['typeJournal Article']
Year 2019 Publication Abbreviated Journal Data Brief
Volume 23
Issue Pages
Keywords Dansgaard-Oeschger events ; Obliquity ; Surrogate data ; Time-varying Shannon entropy
Abstract Data presented are related to the research article entitled “Using Holo-Hilbert spectral analysis to quantify the modulation of Dansgaard-Oeschger events by obliquity” (J. Deng et al., 2018). The datasets in Deng et al. (2018) are analyzed on the foundation of ensemble empirical mode decomposition (EEMD) (Z.H. Wu and N.E. Huang, 2009), and reveal more occurrences of Dansgaard-Oeschger (DO) events in the decreasing phase of obliquity. Here, we report the number of significant high Shannon entropy (SE) (C.E. Shannon and W. Weaver, 1949) of 95% significance level of DO events in the increasing and decreasing phases of obliquity, respectively. First, the proxy time series are filtered by EEMD to obtain DO events. Then, the time-varying SE of DO modes are calculated on the basis of principle of histogram. The 95% significance level is evaluated through surrogate data (T. Schreiber and A. Schmitz, 1996). Finally, a comparison between the numbers of SE values that are larger than 95% significance level in the increasing and decreasing phases of obliquity, respectively, is reported.
Address Key Laboratory of Marine Sciences and Numerical Modelling, Ministry of Natural Resources, Qingdao 266061, PR China
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 2352-3409
ISBN Medium
Area Expedition Conference
Funding strtoupper('3').strtolower('1372394'); strtoupper('P').strtolower('MC6660458')
Approved $loc['no']
Call Number COAPS @ user @
Serial 1068
Permanent link to this record
Author Devanas, A. ; Stefanova, L.
Title Statistical Prediction Of Waterspout Probability For The Florida Keys Type $loc['typeJournal Article']
Year 2018 Publication Weather and Forecasting Abbreviated Journal Wea. Forecasting
Volume 33
Issue Pages 389-410
Keywords Regression analysis ; Forecast verification/skill ; Forecasting techniques ; Probability forecasts/models/distribution ; Statistical forecasting
Abstract A statistical model of waterspout probability was developed for wet-season (June–September) days over the Florida Keys. An analysis was performed on over 200 separate variables derived from Key West 1200 UTC daily wet-season soundings during the period 2006–14. These variables were separated into two subsets: days on which a waterspout was reported anywhere in the Florida Keys coastal waters and days on which no waterspouts were reported. Days on which waterspouts were reported were determined from the National Weather Service (NWS) Key West local storm reports. The sounding at Key West was used for this analysis since it was assumed to be representative of the atmospheric environment over the area evaluated in this study. The probability of a waterspout report day was modeled using multiple logistic regression with selected predictors obtained from the sounding variables. The final model containing eight separate variables was validated using repeated fivefold cross validation, and its performance was compared to that of an existing waterspout index used as a benchmark. The performance of the model was further validated in forecast mode using an independent verification wet-season dataset from 2015–16 that was not used to define or train the model. The eight-predictor model was found to produce a probability forecast with robust skill relative to climatology and superior to the benchmark waterspout index in both the cross validation and in the independent verification.
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Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0882-8156
ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ mfield @
Serial 553
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Author Domingues, R. ; Kuwano-Yoshida, A. ; Chardon-Maldonado, P. ; Todd, R.E. ; Halliwell, G. ; Kim, H.-S. ; Lin, I.-I. ; Sato, K. ; Narazaki, T. ; Shay, L.K. ; Miles, T. ; Glenn, S. ; Zhang, J.A. ; Jayne, S.R. ; Centurioni, L. ; Le Hénaff, M. ; Foltz, G.R. ; Bringas, F. ; Ali, M.M. ; DiMarco, S.F. ; Hosoda, S. ; Fukuoka, T. ; LaCour, B. ; Mehra, A. ; Sanabia, E.R. ; Gyakum, J.R. ; Dong, J. ; Knaff, J.A. ; Goni, G.
Title Ocean Observations in Support of Studies and Forecasts of Tropical and Extratropical Cyclones Type $loc['typeJournal Article']
Year 2019 Publication Frontiers in Marine Science Abbreviated Journal Front. Mar. Sci.
Volume 6
Issue Pages 446
Keywords
Abstract Over the past decade, measurements from the climate-oriented ocean observing system have been key to advancing the understanding of extreme weather events that originate and intensify over the ocean, such as tropical cyclones (TCs) and extratropical bomb cyclones (ECs). In order to foster further advancements to predict and better understand these extreme weather events, a need for a dedicated observing system component specifically to support studies and forecasts of TCs and ECs has been identified, but such a system has not yet been implemented. New technologies, pilot networks, targeted deployments of instruments, and state-of-the art coupled numerical models have enabled advances in research and forecast capabilities and illustrate a potential framework for future development. Here, applications and key results made possible by the different ocean observing efforts in support of studies and forecasts of TCs and ECs, as well as recent advances in observing technologies and strategies are reviewed. Then a vision and specific recommendations for the next decade are discussed.
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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 2296-7745
ISBN Medium
Area Expedition Conference
Funding Approved $loc['no']
Call Number COAPS @ user @
Serial 1043
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Author Dukhovskoy, D. ; Johnson, M. ; Proshutinsky, A.
Title Arctic decadal variability from an idealized atmosphere-ice-ocean model: 1. Model description, calibration, and validation Type $loc['typeJournal Article']
Year 2006 Publication Journal of Geophysical Research Abbreviated Journal J. Geophys. Res.
Volume 111
Issue C6
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 0148-0227
ISBN Medium
Area Expedition Conference
Funding NSF
Approved $loc['no']
Call Number COAPS @ mfield @
Serial 437
Permanent link to this record
Author Dukhovskoy, D.S.
Title Arctic decadal variability: An auto-oscillatory system of heat and fresh water exchange Type $loc['typeJournal Article']
Year 2004 Publication Geophysical Research Letters Abbreviated Journal Geophys. Res. Lett.
Volume 31
Issue 3
Pages
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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 NSF
Approved $loc['no']
Call Number COAPS @ mfield @
Serial 461
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Author Dukhovskoy, D. S. ; Morey, S. L. ; O'Brien, J. J.
Title Topographic Rossby Waves in a Z-Level Ocean Model Type $loc['typeReport']
Year 2005 Publication Abbreviated Journal
Volume Issue Pages 03.05-03.06
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Abstract
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Corporate Author Thesis
Publisher World Meteorological Organization
Place of Publication Geneva, Switzerland
Editor Cote, J.
Language Summary Language Original Title
Series Editor Series Title Research Activities in Atmospheric and Ocean Modeling, Report No. 35
Abbreviated Series Title
Series Volume Series Issue Edition
ISSN ISBN Medium
Area Expedition Conference
Funding ONR, NASA
Approved $loc['no']
Call Number COAPS @ mfield @
Serial 903
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Author Dukhovskoy, D. S. ; Morey, S. L. ; O'Brien, J. J.
Title Topographic Rossby waves in a z-level ocean model Type $loc['typeMagazine Article']
Year 2005 Publication Eos Trans. AGU Abbreviated Journal
Volume 86
Issue 18
Pages Jt. Assem. Suppl., Abstract OS22A-06
Keywords
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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 ONR, NASA
Approved $loc['no']
Call Number COAPS @ mfield @
Serial 909
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