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Extent

1 digital object.

Cite This Work

Lilly, Laura E.; Cornuelle, Bruce D.; Ohman, Mark D. (2022). Data from: Using a Lagrangian particle tracking model to evaluate impacts of El Niño-related advection on euphausiids in the southern California Current System. UC San Diego Library Digital Collections. https://doi.org/10.6075/J0KK9BZP

Description

These supplemental animations depict particle backtrack pathways from the sampled spring distributions of six euphausiid species in the southern California Current System to the prior winter origins of water masses that effect each species. The goal of our study was to explore the sole influence of horizontal advection in describing interannual variability in each euphausiid species. The particle backtracks explicitly model the water masses that affect each species in spring; mismatches between variability in those water masses and variability in biomass of a species suggest the species underwent additional in situ biological changes. We used modeled flow field outputs from the California State Estimate, a regionally optimized downscale of the MITgcm, to force a particle backtracking model. The model encompasses 2008-2017. The euphausiid biomass samples come from the CalCOFI program. We first objectively mapped the biomass values from the individual stations for a single spring onto a smooth, interpolated surface to depict the distribution across the entire region. From that surface, we identified the threshold contours encompassing the regions of >80% biomass and 50-80% biomass. We then seeded particles within those contours to represent that spring distribution, and then backtracked the particles for four months to the prior December.

Date Collected

• 2007-11-01 to 2017-03-31

Date Issued

• 2022

Funding

This work was supported by an NSF Graduate Research Fellowship to L. E. Lilly, NSF OCE-1614359 and OCE-1637632 to the California Current Ecosystem-LTER site, Gordon and Betty Moore Foundation support to M. D. Ohman, and NOAA Office of Naval Research support to B. D. Cornuelle and the CASE model.

Geographics

• Baja California
• Pacific Ocean

Scientific Names

• Euphausia eximia
• Euphausia gibboides
• Euphausia pacifica
• Nematoscelis difficilis
• Nyctiphanes simplex
• Thysanoessa spinifera

Topics

• Advection
• California current system
• El Niño
• Euphausiids
• Lagrangian
• North Pacific Subtropical Gyre
• Particle tracking model
• Southern California Bight
• Zooplankton

Formats

View formats within this collection

• data
• text
• video

Language

• English

Identifier

Identifier: Bruce D. Cornuelle: https://orcid.org/0000-0003-2110-3319

Identifier: Laura E. Lilly: https://orcid.org/0000-0002-7046-1545

Identifier: Mark D. Ohman: https://orcid.org/0000-0001-8136-3695

Related Resources

Primary associated publication

• Laura E. Lilly, Bruce D. Cornuelle, Mark D. Ohman (2022). Using a Lagrangian particle tracking model to evaluate impacts of El Niño-related advection on euphausiids in the southern California Current System. Deep Sea Research Part I: Oceanographic Research Papers. https://doi.org/10.1016/j.dsr.2022.103835
• Lilly, L. E. (2021). Responses of the Southern California Current System Zooplankton Community to El Niño Variability. Ph.D. Thesis. ProQuest. https://escholarship.org/uc/item/8qd4k8mn

Source data

• Brinton-Townsend Euphausiid Database, UC San Diego: https://oceaninformatics.ucsd.edu/euphausiid

Identical version

• California State Estimate (CASE) - Zonal and Meridional Velocities: http://www.ecco.ucsd.edu/case_stse_results1.html