A5090729096- Oceanographic and Atmospheric Processes
- Climate variability and models
- Marine and coastal ecosystems
- Meteorological Phenomena and Simulations
- Tropical and Extratropical Cyclones Research
- Orthodontics and Dentofacial Orthopedics
- Marine and fisheries research
- Temporomandibular Joint Disorders
- Ocean Waves and Remote Sensing
- Geology and Paleoclimatology Research
- Dental Radiography and Imaging
- Dysphagia Assessment and Management
- Atmospheric and Environmental Gas Dynamics
- Obstructive Sleep Apnea Research
- Listeria monocytogenes in Food Safety
- Geophysics and Gravity Measurements
- Child Nutrition and Feeding Issues
- Arctic and Antarctic ice dynamics
- Atmospheric chemistry and aerosols
- Ocean Acidification Effects and Responses
- Atmospheric aerosols and clouds
- Cleft Lip and Palate Research
- Atmospheric Ozone and Climate
- Voice and Speech Disorders
- dental development and anomalies
Scripps Institution of Oceanography
2015-2024
University of California, San Diego
2015-2024
University of California, San Francisco
2009-2022
Bangor University
2022
Cooperative Institute for Research in Environmental Sciences
2021
University of Colorado Boulder
2021
NOAA Physical Sciences Laboratory
2021
NSF National Center for Atmospheric Research
2021
NOAA National Marine Fisheries Service Southwest Fisheries Science Center
2021
Google (United States)
2008-2020
Abstract The Pacific decadal oscillation (PDO), the dominant year-round pattern of monthly North sea surface temperature (SST) variability, is an important target ongoing research within meteorological and climate dynamics communities central to work many geologists, ecologists, natural resource managers, social scientists. Research over last 15 years has led emerging consensus: PDO not a single phenomenon, but instead result combination different physical processes, including both remote...
Decadal fluctuations in salinity, nutrients, chlorophyll, a variety of zooplankton taxa, and fish stocks the Northeast Pacific are often poorly correlated with most widely‐used index large‐scale climate variability region ‐ Oscillation (PDO). We define new pattern change, North Gyre (NPGO) show that its is significantly previously unexplained nutrients chlorophyll. Fluctuations NPGO driven by regional basin‐scale variations wind‐driven upwelling horizontal advection – fundamental processes...
Abstract Summer 2019 observations show a rapid resurgence of the Blob-like warm sea surface temperature (SST) anomalies that produced devastating marine impacts in Northeast Pacific during winter 2013/2014. Unlike original Blob, Blob 2.0 peaked summer, season when little is known about physical drivers such events. We primarily results from prolonged weakening North High-Pressure System. This reduces winds and decreases evaporative cooling wind-driven upper ocean mixing. Warmer conditions...
Enhanced vertical carbon transport (gravitational sinking and subduction) at mesoscale ocean fronts may explain the demonstrated imbalance of new production particle export in coastal upwelling ecosystems. Based on flux assessments from 238U:234Th disequilibrium sediment traps, we found 2 to 3 times higher rates gravitational near a deep-water front (305 mg C⋅m-2⋅d-1) compared with adjacent water or mean (nonfrontal) regional conditions. Elevated was mechanistically linked Fe-stressed...
A systematic analysis of North Pacific decadal variability in a full-physics coupled ocean–atmosphere model is executed. The an updated and improved version the studied by Latif Barnett. Evidence sought for determining details mechanism responsible enhanced variance some variables at 20–30-yr timescales. possible mechanisms include midlatitude gyre feedback loop, stochastic forcing, remote or sampling error. Decadal expressed most prominently anomalies upper-ocean streamfunction, sea surface...
Observations of oceanic temperature in the upper 400 m reveal decadal signals that propagate thermocline along lines constant potential vorticity from ventilation region central North Pacific to approximately 18°N western Pacific. The propagation path and speed are well described by geostrophic mean circulation a model ventilated thermocline. approximate southward thermal signal 7 mm s−1 yields transit time eight years. anomalies appear be forced perturbations mixed layer heat budget...
From the early 1970s to mid-1980s, main thermocline of subarctic gyre North Pacific Ocean shoaled with temperatures at 200–400-m depth cooling by 1°–4°C over region. The gyre-scale structure shoaling is quasi-stationary and intensified in western part basin north 30°N, suggesting concurrent changes transport. A similar subtropical south 25°N also observed but lags subpolar change several years. To explore physics these changes, authors examine an ocean model forced wind stress heat flux...
Abstract Long-term changes in the observed temperature and salinity along southern California coast are studied using a four-dimensional space–time analysis of 52-yr (1949–2000) Cooperative Oceanic Fisheries Investigations (CalCOFI) hydrography combined with sensitivity an eddy-permitting primitive equation ocean model under various forcing scenarios. An overall warming trend 1.3°C surface, deepening depth mean thermocline (18 m), increased stratification between 1950 1999 found to be...
Long‐term changes in global mean sea level (MSL) rise have important practical implications for shoreline and beach erosion, coastal wetlands inundation, storm surge flooding, development. Altimetry since 1993 indicates that MSL has increased about 50% above the 20th century rate, from 2 to 3 mm yr −1 . At same time, both tide gauge measurements altimetry indicate virtually no increase along Pacific coast of North America during satellite epoch. Here we show dynamical steric response eastern...