A5000958101- Oceanographic and Atmospheric Processes
- Geophysics and Gravity Measurements
- Ocean Waves and Remote Sensing
- Climate variability and models
- Tropical and Extratropical Cyclones Research
- Marine and fisheries research
- Marine and coastal ecosystems
- Fluid Dynamics and Turbulent Flows
- Arctic and Antarctic ice dynamics
- Marine animal studies overview
- Reservoir Engineering and Simulation Methods
- Underwater Acoustics Research
- Atmospheric and Environmental Gas Dynamics
- Geological formations and processes
- Geology and Paleoclimatology Research
- Oil Spill Detection and Mitigation
- Biomimetic flight and propulsion mechanisms
- Solar and Space Plasma Dynamics
- Meteorological Phenomena and Simulations
- Methane Hydrates and Related Phenomena
- Computational Fluid Dynamics and Aerodynamics
- earthquake and tectonic studies
- Coral and Marine Ecosystems Studies
- Geomagnetism and Paleomagnetism Studies
- GNSS positioning and interference
University of Colorado Boulder
2011-2020
Woods Hole Oceanographic Institution
2017-2018
North Carolina State University
2018
Leidos (United States)
2017
NSF National Center for Atmospheric Research
1998-2016
University of Colorado System
1988-2011
Louisiana State University
2011
California Institute of Technology
2003
The Ohio State University
1998
Clear skies, subsequent to Hurricane Ivan's passage across the Gulf of Mexico in September 2004, provided a unique opportunity investigate upper ocean responses major hurricane. Oceanic cyclonic circulation was rapidly intensified by hurricane's wind field (59–62 m s −1 ), maximizing upwelling and surface cooling (3–7°C) two large areas along track. Upward isothermal displacements 50–65 m, computed from stress sea height changes, caused rapid ventilation thermoclines nutriclines, leading...
The most energetic events in the circulation of Gulf Mexico are separation large anticyclonic rings from Loop Current. Building on previous work, authors examine all apparent since July 1973. This new dataset includes satellite altimetry 1992, providing a set 34 consecutive ring formations. primary advantage is that data remain available summer. One finding ambiguity whether or not has separated reduced, but eliminated; uncertainty with which “events” can be specified remains approximately 4...
[1] Cyclostationary empirical orthogonal functions, derived from satellite altimetry, are combined with historical sea level measurements tide gauges to reconstruct fields 1950 through 2009. Previous reconstructions have utilized functions as basis but by using cyclostationary and addressing other aspects of the reconstruction procedure, an alternative can be computed. The procedure introduced here is capable capturing annual cycle El Nino–Southern Oscillation (ENSO) signals back 1950,...
Understanding and explaining the trend in global mean sea level (GMSL) have important implications for future projections of rise. While measurements from satellite altimetry provided accurate estimates GMSL, modern record has only now reached 20 years length, making it difficult to assess contribution decadal multidecadal climate signals trend. Here, we use a reconstruction study year trends since 1950. In particular, show that Pacific Decadal Oscillation (PDO) contributes significantly...
Abstract Based on the satellite altimeter data, sea level off west coast of United States has increased over past 5 years, while in western tropical Pacific declined. Understanding whether this is a short‐term shift or beginning longer‐term change important implications for coastal planning efforts coming decades. Here, we identify and quantify recent Ocean level, also seek to describe variability manner consistent with descriptions El Nino‐Southern Oscillation (ENSO) particularly Decadal...
Abstract Category 4 Hurricane Kenneth (HK) experienced unpredicted rapid weakening when it stalled over a cold core eddy (CCE) on 19–20 September 2005, 2800 km SE of Hawaii. Maximum sea surface temperature (SST) cooling 8–9°C and minimum aerially averaged SST 18.3°C (over 8750 2 ) characterized its cool wake. A 3‐D mixed‐layer model enabled estimation enthalpy fluxes (latent sensible heat), as well the relative importance slow translation speed ( U h compared with preexisting CCE. As dropped...
Abstract Since 1996, global, near-real-time maps of mesoscale anomalies derived from tandem sampling provided by altimeters aboard the TOPEX/Poseidon and ERS-2 satellites have been posted on web pages hosted at Colorado Center for Astrodynamics Research. The original, processing system was based a quick-look analysis that referenced data to high-resolution gridded mean sea surface available time. Recently, state-of-the-art surfaces are more complete record altimeter observations. An updated...
Two‐year‐long time series of current and density structure measurements across the Yucatan Channel's main section allow calculation time‐dependent potential vorticity flux between Gulf Mexico Caribbean Sea, which is characterized by alternating periods positive (cyclonic) negative (anti‐cyclonic) influx. Periods cumulative influx are related to Loop Current extending into Mexico, whereas relate a retraction, sometimes coincident with shedding an anti‐cyclonic eddy.
Abstract Although much of the focus on future sea level rise concerns long‐term trend associated with anthropogenic warming, shorter time scales, internal climate variability can contribute significantly to regional level. Such should be taken into consideration when planning efforts mitigate effects change. In this study, we quantify contribution El Niño‐Southern Oscillation (ENSO). Through cyclostationary empirical orthogonal function analysis (CSEOF) long reconstructed data set and a U.S....
We analyzed the variability of sea surface height anomaly (SSHA), and its relationship with Bigeye tuna catch in eastern Indian Ocean (EIO) off Java Island (Indonesia). Both time series SSHA HR show dominant signals corresponding to annual inter-annual variability. During southeast monsoon wind blows along southern coast produces coastal upwelling. This causes level drop due an offshore Ekman transport, thermocline becomes shallower. El Niño Dipole (IOD) positive phase, upwelling is more...
Sea ice reduction is accelerating in the Barents and Kara Seas. Several mechanisms are proposed to explain accelerated loss of Arctic sea ice, which remains be controversial. In present study, detailed physical mechanism winter (December-February) identified from daily ERA interim reanalysis data. Downward longwave radiation an essential element for reduction, but can primarily sustained by excessive upward heat flux surface exposed air region loss. The increased turbulent used increase...
Sea surface height anomaly data from satellite are continuously available for the entire Gulf of Mexico. Surface current velocities derived these remotely sensed compared with drifting buoys. The comparison shows that altimetry does an excellent job resolving gulf eddies over shelf rise (depths between ∼200 and 2000 m) if proper length scale is used. Correlations altimeter‐ drifter‐derived statistically significant ( r >0.5) when slope computed 125 km, indicating sea can be used to aid...