A5065872306- Oceanographic and Atmospheric Processes
- Marine and fisheries research
- Marine and coastal ecosystems
- Climate variability and models
- Coral and Marine Ecosystems Studies
- Marine Bivalve and Aquaculture Studies
- Marine animal studies overview
- Meteorological Phenomena and Simulations
- Marine Biology and Ecology Research
- Fish Ecology and Management Studies
- Ocean Acidification Effects and Responses
- Atmospheric and Environmental Gas Dynamics
- Reservoir Engineering and Simulation Methods
- Marine and coastal plant biology
- Ocean Waves and Remote Sensing
- Isotope Analysis in Ecology
- Species Distribution and Climate Change
- Geology and Paleoclimatology Research
- Tropical and Extratropical Cyclones Research
- Methane Hydrates and Related Phenomena
- Geological and Geophysical Studies
- Arctic and Antarctic ice dynamics
- Cephalopods and Marine Biology
- Plant Water Relations and Carbon Dynamics
- Animal Vocal Communication and Behavior
University of California, Santa Cruz
2016-2025
Cooperative Institute for Research in Environmental Sciences
2013
University of Colorado Boulder
2013
University of Chicago
2013
The Ohio State University
2013
University of Missouri
2013
Colorado State University
2013
University of California, Berkeley
2013
Integra (United States)
2013
Oceanography Society
2013
Abstract A 31 year (1980–2010) sequence of historical analyses the California Current System (CCS) is used to describe central CCS (35–43˚N) coastal upwelling response El Niño‐Southern Oscillation (ENSO) variability. The analysis period captures 10 Niño and La Niña events, including extreme Niños 1982–1983 1997–1998. Data‐assimilative model runs backward trajectory calculations passive tracers are elucidate physical conditions source water characteristics during season each year. In general,...
A historical analysis of California Current System (CCS) circulation, performed using the Regional Ocean Modeling with four-dimensional variational data assimilation, was used to study upwelling variability during 1988–2010 period. We examined directly from vertical velocity field, which elucidates important temporal and spatial not captured by traditional coastal indices. Through much CCS, within 50 km coast has increased, as reported elsewhere. However, 200 offshore, trends are negative...
Climate-related shifts in marine mammal range and distribution have been observed some populations; however, the nature magnitude of future responses are uncertain novel environments projected under climate change. This poses a challenge for agencies charged with management conservation these species. Specialized diets, restricted ranges, or reliance on specific substrates sites (eg pupping) make many populations particularly vulnerable to High-latitude, predominantly ice-obligate, species...
Given the ecological and economic importance of eastern boundary upwelling systems like California Current System (CCS), their evolution under climate change is considerable interest for resource management. However, spatial resolution global earth system models (ESMs) typically too coarse to properly resolve coastal winds dynamics that are key structuring these ecosystems. Here we use a high-resolution (0.1°) regional ocean circulation model coupled with biogeochemical dynamically downscale...
Marine ecosystem forecasting is an area of active research and rapid development. Promise has been shown for skillful prediction physical, biogeochemical, ecological variables on a range timescales, suggesting potential forecasts to aid in the management living marine resources coastal communities. However, mechanisms underlying forecast skill ecosystems are often poorly understood, many forecasts, especially biological variables, rely empirical statistical relationships developed from...
Projecting the future distributions of commercially and ecologically important species has become a critical approach for ecosystem managers to strategically anticipate change, but large uncertainties in projections limit climate adaptation planning. Although distribution are primarily used understand scope potential change-rather than accurately predict specific outcomes-it is nonetheless essential where why can give implausible results identify which processes contribute uncertainty. Here,...
Long‐term timeseries of upper ocean salinity and nutrients collected in the Alaskan Gyre along Line P exhibit significant decadal variations that are shown to be phase with recorded Southern California Current System by Cooperative Oceanic Fisheries Investigation (CalCOFI). We present evidence these linked North Pacific Oscillation (NPGO)—a climate mode variability tracks changes strength central eastern branches gyres Kuroshio‐Oyashio Extension (KOE). The NPGO emerges as leading...
Abstract A regional ocean model is used to evaluate the roles of wind, surface heat flux, and basin‐scale climate variability in regulating upwelled nitrate supply California Current. strong positive trend flux from 1980 2010 was driven almost entirely by enhanced equatorward winds, negating a weak negative associated with increased flux. Increased upwelling are consistent cooler temperatures higher phytoplankton concentrations observed over same period. Changes remote forcing, resulting...
The advancement of Coastal Ocean Forecasting Systems (COFS) requires the support continuous scientific progress addressing: (a) primary mechanisms driving coastal circulation; (b) methods to achieve fully integrated systems (observations and models), that are dynamically embedded in larger scale systems; (c) adequately represent air-sea biophysical interactions. Issues downscaling, data assimilation, atmosphere-wave-ocean couplings ecosystem dynamics ocean discussed. These science topics...
Abstract Many marine species are shifting their distributions in response to changing ocean conditions, posing significant challenges and risks for fisheries management. Species distribution models (SDMs) used project future the face of a climate. Information fit SDMs generally comes from two main sources: fishery‐independent (scientific surveys) fishery‐dependent (commercial catch) data. A concern with data is that fishing locations not independent underlying abundance, potentially biasing...
Through daily vertical movements, mesopelagic fishes contribute to global carbon export and, when eaten, link primary consumers higher trophic level predators. Although the importance of as prey individual predator species has been explored, a comprehensive assessment at scale large marine ecosystem would advance our observing, modeling, and predicting biodiversity function. We use diet samples from over 105,000 predators 143 taxa in California Current Ecosystem (CCE) quantify evaluate role...
ABSTRACT In upwelling systems, fluctuations in seawater pH, dissolved oxygen (DO), and temperature can expose species to extremes that differ greatly from the mean conditions. Understanding nature of this exposure extremes, including how low DO concentrations, varies spatiotemporally context other drivers, is critical for informing global change biology. Here, we use a 4‐yr time series coupled DO, observations at six nearshore kelp forest sites spanning coast California characterize...
Climate change drives species distribution shifts, affecting the availability of resources people rely upon for food and livelihoods. These impacts are complex, manifest at local scales, have diverse effects across multiple species. However, wild capture fisheries, current understanding is dominated by predictions individual coarse spatial scales. We show that species-specific responses to localized environmental changes will alter collection co-occurring within established fishing...
Abstract The present study uses a suite of coupled physical‐biogeochemical model simulations at 1/3°, 1/10°, and 1/30° to assess the impact horizontal resolution on air‐sea CO 2 fluxes in California Current System (CCS), relevant issue for downscaling between coarser global climate models higher regional models. results demonstrate that is important reproduce sharp transition near‐shore outgassing offshore absorption, as well resolve regions enhanced lee capes. width region overestimated...
Abstract A physical‐biogeochemical model is used to produce a retrospective analysis at 3‐km resolution of alongshore phytoplankton variability in the California Current during 1988–2010. The simulation benefits from downscaling regional circulation reanalysis, which provides improved physical ocean state estimates high‐resolution domain. emerging pattern one local upwelling intensification response increased wind stress lee capes, modulated by meanders geostrophic circulation. While...
Abstract In the California Current System (CCS), nearshore environment experiences natural exposure to low pH and reduced oxygen in response coastal upwelling. Anthropogenic impacts further decrease below biological thresholds, making CCS particularly vulnerable ocean acidification hypoxia. Results from a coupled physical‐biogeochemical model reveal strongly heterogeneous alongshore pattern of central CCS, both their long‐term means trends. This spatial structuring is explained by an...
Motivated by a need for climate-informed living marine resource management, increased emphasis has been placed on regional end-to-end modeling frameworks designed to project climate impacts ecosystems and evaluate the efficacy of potential management strategies under changing conditions. The 'Future Seas' was initiated with focus three fisheries (Pacific sardine, swordfish, albacore tuna) in California Current System (CCS). This work leverages suite climate, ocean, ecosystem, economic models...
Abstract In California offshore waters, sustained northwesterly winds have been identified as a key resource that can contribute substantially to renewable energy goals. However, the development of large-scale wind farms reduce stress at sea surface, which could affect wind-driven upwelling, nutrient delivery, and ecosystem dynamics. Here we examine changes upwelling using atmospheric ocean circulation numerical models together with hypothetical upper bound buildout scenario 877 turbines...