Data from: Using a Lagrangian particle tracking model to evaluate impacts of El Niño-related advection on euphausiids in the southern California Current System
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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. 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. Research Data Curation Program, UC San Diego, La Jolla, 92093-0175 (https://lib.ucsd.edu/rdcp) 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
Type
moving image
Language
English
Subject
North Pacific Subtropical Gyre Lagrangian Euphausiids California current system Advection Particle tracking model Southern California Bight Zooplankton El Niño Pacific Ocean Baja California Thysanoessa spinifera Euphausia eximia Nyctiphanes simplex Euphausia gibboides Nematoscelis difficilis Euphausia pacifica
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