| Home | << 1 2 3 4 5 6 7 8 9 10 >> [11–20] |
|
| Records | |||||
|---|---|---|---|---|---|
| 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. | ||||
| 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 | 0277-3791 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Funding | Approved | $loc['no'] | |||
| Call Number | COAPS @ user @ | Serial | 971 | ||
| Permanent link to this record | |||||
| 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. | ||||
| 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 | 0882-8156 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Funding | Approved | $loc['no'] | |||
| Call Number | COAPS @ mfield @ | Serial | 553 | ||
| Permanent link to this record | |||||
| 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. | ||||
| 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 | 1043 | ||
| Permanent link to this record | |||||
| 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 | |
| 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 | NSF | Approved | $loc['no'] | ||
| Call Number | COAPS @ mfield @ | Serial | 461 | ||
| Permanent link to this record | |||||
| 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 | ||
| Keywords | |||||
| Abstract | |||||
| Address | |||||
| 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 | ||
| Permanent link to this record | |||||
| 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 | |||||
| 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 | ONR, NASA | Approved | $loc['no'] | ||
| Call Number | COAPS @ mfield @ | Serial | 909 | ||
| Permanent link to this record | |||||
| Author | Dukhovskoy, D. S.; Morey, S. L.; O'Brien, J. J. | ||||
| Title | Baroclinic topographic waves on the Nicaragua Shelf generated by tropical cyclones | Type | $loc['typeReport'] | ||
| Year | 2006 | Publication | Abbreviated Journal | ||
| Volume | Issue | Pages | |||
| Keywords | |||||
| Abstract | |||||
| Address | |||||
| 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. 36 | 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 | 924 | ||
| Permanent link to this record | |||||
| Author | Dukhovskoy, D.S.; Morey, S.L.; O'Brien, J.J. | ||||
| Title | Influence of multi-step topography on barotropic waves and consequences for numerical modeling | Type | $loc['typeJournal Article'] | ||
| Year | 2006 | Publication | Ocean Modelling | Abbreviated Journal | Ocean Modelling |
| Volume | 14 | Issue | 1-2 | Pages | 45-60 |
| Keywords | numerical models; ocean mathematical models; topographic waves; double Kelvin waves; continental shelves; shelf waves | ||||
| 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 | ONR, NASA | Approved | $loc['no'] | ||
| Call Number | COAPS @ mfield @ | Serial | 443 | ||
| Permanent link to this record | |||||
2000 Levy Avenue
Building A, Suite 292
Tallahassee, FL 32306-2741
Phone: (850) 644-4581
Fax: (850) 644-4841
contact@coaps.fsu.edu
