Phenology of coastal upwelling in the California Current
Open accessAbstract
Changes in the amplitude and phasing of seasonal events (phenology) can affect the functioning of marine ecosystems. Phenology plays a particularly critical role in eastern boundary ecosystems, which are driven largely by the seasonal cycle of coastal upwelling. Here we develop and describe a set of indicators that quantify the timing, evolution, intensity, and duration of coastal upwelling in the California Current large marine ecosystem (CCLME). There is significant interannual variability in upwelling characteristics during 1967–2007, with extended periods of high (1970s, 1998–2004) and low (1980–1995) seasonally‐integrated upwelling and a trend towards a later and shorter upwelling season in the northern CCLME. El Niño years were characterized by delayed and weak upwelling in the central CCLME. Understanding the causes and ecosystem consequences of phenological changes in coastal upwelling is critical, as climate models project significant variability in the amplitude and phase of coastal upwelling under varying climate change scenarios.
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The timing of high predicted Mola bycatch rates corresponds to the later upwelling season across much of California.
“The timing of high predicted bycatch rates corresponds to the later upwelling season across much of California (Bograd et al., 2009) which could indicate a time lag from the seasonal maximum required for sufficient trophic transfer of upwelled nutrients to support large gelatinous zooplankton aggregations.”
From Oceanographic determinants of ocean sunfish (Mola mola) and bluefin tuna (Thunnus orientalis) bycatch patterns in the California large mesh drift gillnet fishery (2017) · cites this paper as Bograd et al., 2009
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References 31 · Cited by 315
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- Authors
- Bograd, S. J., Schroeder, I., Sarkar, N., Qiu, X., Sydeman, W. J., & Schwing, F. B.
- Affiliations
- National Oceanic and Atmospheric Administration (US)
- Farallon Institute (US)
- Venue
- Geophysical Research Letters
- Publisher
- American Geophysical Union (AGU)
- Published
- 2009-01
- Volume
- 36
- Issue
- 1
- ISSN
- 0094-8276 (ISSN-L)
- 1944-8007
- OpenAlex
- W2029036899
- Cited by
- 315
- References
- 31
- Citations by year
- 2026: 12 · 2025: 22 · 2024: 25 · 2023: 29 · 2022: 15 · 2021: 20 · 2020: 14 · 2019: 12 · 2018: 15 · 2017: 24 · 2016: 17 · 2015: 21 · 2014: 19 · 2013: 30 · 2012: 10
- FWCI
- 6.93
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Geophysical Research Letters (publishedVersion)
- Funders
- National Oceanic and Atmospheric Administration
- Topics
- Physical Sciences › Earth and Planetary Sciences › Oceanography › Oceanographic and Atmospheric Processes
- Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
- Physical Sciences › Environmental Science › Global and Planetary Change › Marine and fisheries research
- Keywords
- coastal upwelling, phenology, California Current, eastern boundary upwelling systems, interannual variability, El Niño, upwelling intensity, climate change projections
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