Phase IIIa-CCS: Latitudinal variation of upwelling, retention, nutrient supply and freshwater effects in the California Current System
Abstract
This proposal requests funding to: a) synthesize the moored current meter, shore-based HF radar, ship-based
hydrographic, and remotely sensed data from the GLOBEC Northeast Pacific (NEP) Long-Term Observation
Program (LTOP) and related programs into a coherent, best description of the mesoscale variability along the
Pacific Northwest coast from 42 to 48N; and b) relate this physical variability to primary production,
zooplankton distributions, and salmon year-class strength in the region. The long-term moorings will allow
quantification of the relevant time scales from internal waves to the inter-annual; the satellite images of sea
surface temperature and chlorophyll will show the spatial scales; and the HF surface fields will allow timeand
space-varying statistics of the mesoscale currents and quasi-Lagrangian pathways to be assessed. The
primary scientific objective will be to characterize the alongshelf variability in the upwelling, the nutrients it
supplies to the photic zone for utilization by marine organisms, and the retention times of plankton. This
variability is affected by the alongshore distribution of the wind stress and fresh water input, by the changes
in the bottom topography and coastline orientation, and by pre-conditioning established by inter-annual
variability and climate change.
Description
US-GLOBEC NEP Abstract
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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