Seasonal and interannual variability of satellite-derived chlorophyll pigment, surface height, and temperature off Baja California Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/hh63sx30v

Copyright 2004 by the American Geophysical Union

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Mean fields, seasonal cycles, and interannual variability are examined for fields of satellite-derived chlorophyll pigment concentrations (CHL), sea surface height (SSH), and sea surface temperature (SST) during 1997–2002. The analyses help to identify three dynamic regions: an upwelling zone next to the coast, the Ensenada Front in the north, and regions of repeated meanders and/or eddy variability west and southwest of Point Eugenia. High values of CHL are found in the upwelling zone, diminishing offshore. The exception is the area north of 31°N (the Ensenada Front), where higher CHL are found about 150 km offshore. South of 31°N, the long-term mean dynamic topography decreases next to the coast, creating isopleths of height parallel to the coastline, consistent with southward geostrophic flow. North of 31°N the mean flow is toward the east, consistent with the presence of the Ensenada Front. The mean SST reveals a more north-south gradient, reflecting latitudinal differences in surface heating due to solar radiation. Harmonic analyses and EOFs reveal the seasonal and interannual patterns, including the region of repeated eddy activity to the west and southwest of Point Eugenia. A maximum CHL occurs in spring in most of the inshore regions, reflecting the growth of phytoplankton in response to the seasonal maximum in upwelling-favorable winds. SST and SSH anomalies are negative in the coastal upwelling zone in spring, also consistent with a response to the seasonal maximum in upwelling. When the seasonal cycle is removed, the strongest signal in the EOF time series is the response to the strong 1997– 1998 El Niño, with a weaker signal representing La Niña (1998–1999) conditions. El Niño conditions consist of low chlorophyll, high SSH, and high SST, with opposite conditions during La Niña.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Espinosa-Carreon, T. L., P. T. Strub, E. Beier, F. Ocampo-Torres, and G. Gaxiola-Castro (2004), Seasonal and interannual variability of satellite-derived chlorophyll pigment, surface height, and temperature off Baja California, J. Geophys. Res., 109, C03039, doi:10.1029/2003JC002105.
Series
Rights Statement
Publisher
Language
Replaces
Additional Information
  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2010-04-26T14:59:17Z (GMT) No. of bitstreams: 1 Espinosa_Carreon et al JGR 2004.pdf: 2125600 bytes, checksum: 58ad4705864fbc89e35a6ab6531ab10c (MD5)
  • description.provenance : Made available in DSpace on 2010-04-26T14:59:17Z (GMT). No. of bitstreams: 1 Espinosa_Carreon et al JGR 2004.pdf: 2125600 bytes, checksum: 58ad4705864fbc89e35a6ab6531ab10c (MD5) Previous issue date: 2004
  • description.provenance : Submitted by Xiaoping Li (xiaoping.li@oregonstate.edu) on 2010-04-23T16:46:38Z No. of bitstreams: 1 Espinosa_Carreon et al JGR 2004.pdf: 2125600 bytes, checksum: 58ad4705864fbc89e35a6ab6531ab10c (MD5)

Relationships

In Administrative Set:
Last modified: 07/21/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items