Large‐scale anomalies in sea‐surface temperature and air‐sea fluxes during wind relaxation events off the United States West Coast in summer
Abstract
In summertime along the U.S. West Coast, the winds exhibit a three‐stage cycle spanning ∼12 days. The prevailing upwelling‐favorable winds weaken (relax) or reverse off the Pacific Northwest, then reintensify, then weaken off central California. We study the sea‐surface temperature (SST) response to these “northern” and “southern” wind relaxations. (1) Satellite data indicate northern wind relaxations result in SST anomalies O(+1°C) extending ∼2000 km offshore. Surface heat flux reanalyses indicate the warm anomaly is mainly from decreased latent cooling. (2) After the winds reintensify, SST becomes anomalously cold along central and southern California. (3) During the southern wind relaxations, the cold SST anomaly persists but the SST warms with time. This warming is not driven by surface heat flux. The latent cooling is reduced, yet unlike during the northern relaxation, this change is canceled by a decrease in solar radiation due to increased cloudiness. In the region south of Point Conception, reduced southward advection of cold water and increased northward advection of warm water by the coastal countercurrent could explain the warming. Reduced Ekman pumping likely contributes to the warming trend during the southern relaxations, and reduced wind‐driven entrainment at the base of the mixed layer likely contributes to the warming during both relaxations. Whether the net surface heat flux is the main driver of SST anomalies during wind relaxation depends on the regional r…
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
Correlations between wind and air-sea buoyancy flux variability vary from place to place.
“Such correlations vary from place to place (Send et al. 1987;Beardsley et al. 1998;Flynn et al. 2017;Lübbecke et al. 2019).”
From Competition between Baroclinic Instability and Ekman Transport under Varying Buoyancy Forcings in Upwelling Systems: An Idealized Analog to the Southern Ocean (2021) · cites this paper as Flynn et al. 2017
Cites
Daily High-Resolution-Blended Analyses for Sea Surface Temperature
Reynolds, R. W., Smith, T. M., Liu, C., Chelton, D. B., Casey, K. S., & Schlax, M. G. (2007) · Journal of Climate · doi:10.1175/2007jcli1824.1 · Cited by 4,350 · see citing works
Price, J. F., Weller, R. A., & Pinkel, R. (1986) · Journal of Geophysical Research Atmospheres · doi:10.1029/jc091ic07p08411 · Cited by 1,283 · see citing works
Wood, R. (2012) · Monthly Weather Review · doi:10.1175/mwr-d-11-00121.1 · Cited by 1,235 · see citing works
Zhang, Y., Rossow, W. B., Lacis, A. A., Oinas, V., & Mishchenko, M. I. (2004) · Journal of Geophysical Research Atmospheres · doi:10.1029/2003jd004457 · Cited by 1,130 · see citing works
Objectively Analyzed Air–Sea Heat Fluxes for the Global Ice-Free Oceans (1981–2005)
Yu, L., & Weller, R. A. (2007) · Bulletin of the American Meteorological Society · doi:10.1175/bams-88-4-527 · Cited by 1,066 · see citing works
Irradiance Measurements in the Upper Ocean
Paulson, C. A., & Simpson, J. J. (1977) · Journal of Physical Oceanography · doi:10.1175/1520-0485(1977)007 · Cited by 879 · see citing works
Air–sea interaction over ocean fronts and eddies
Small, J., de Szoeke, S. P., Xie, S., O’Neill, L. W., Seo, H., Song, Q., Cornillon, P., Spall, M. A., & Minobe, S. (2008) · Dynamics of Atmospheres and Oceans · doi:10.1016/j.dynatmoce.2008.01.001 · Cited by 834 · see citing works
The California current system—hypotheses and facts
Hickey, B. M. (1979) · Progress In Oceanography · doi:10.1016/0079-6611(79)90002-8 · Cited by 825 · see citing works
On the Exchange of Momentum over the Open Ocean
Edson, J. B., Jampana, V., Weller, R. A., Bigorre, S. P., Plueddemann, A. J., Fairall, C. W., Miller, S. D., Mahrt, L. J., Vickers, D., & Hersbach, H. (2013) · Journal of Physical Oceanography · doi:10.1175/jpo-d-12-0173.1 · Cited by 824 · see citing works
Cool‐skin and warm‐layer effects on sea surface temperature
Fairall, C. W., Bradley, E. F., Godfrey, J. S., Wick, G. A., Edson, J. B., & Young, G. S. (1996) · Journal of Geophysical Research Atmospheres · doi:10.1029/95jc03190 · Cited by 797 · see citing works
Satellite measurements of sea surface temperature through clouds
Wentz, F., Gentemann, C., Smith, D. K., & Chelton, D. (2000) · Science · doi:10.1126/science.288.5467.847 · Cited by 766 · see citing works
On the Relationship between Stratiform Low Cloud Cover and Lower-Tropospheric Stability
Wood, R. W., & Bretherton, C. S. (2006) · Journal of Climate · doi:10.1175/jcli3988.1 · Cited by 763 · see citing works
The California Current System: the seasonal variability of its physical characteristics
Lynn, R. J., & Simpson, J. J. (1987) · Journal of Geophysical Research: Oceans · doi:10.1029/jc092ic12p12947 · Cited by 761 · see citing works
Schiffer, R. A., & Rossow, W. B. (1983) · Bulletin of the American Meteorological Society · doi:10.1175/1520-0477-64.7.779 · Cited by 644 · see citing works
A System Simulation Approach to Ensemble Prediction
Houtekamer, P. L., Lefaivre, L., Derome, J., Ritchie, H., & Mitchell, H. L. (1996) · Monthly Weather Review · doi:10.1175/1520-0493(1996)124 · Cited by 582 · see citing works
Yu, L., Jin, X., & Weller, R. A. (2008) · Cited by 538 · see citing works
Holte, J. W., & Talley, L. D. (2009) · Journal of Atmospheric and Oceanic Technology · doi:10.1175/2009jtecho543.1 · Cited by 369 · see citing works
Rossow, W. B., & Zhang, Y. (1995) · Journal of Geophysical Research Atmospheres · doi:10.1029/94jd02746 · Cited by 326 · see citing works
Relaxation from upwelling in the Coastal Ocean Dynamics Experiment
Send, U., Beardsley, R. C., & Winant, C. D. (1987) · Journal of Geophysical Research: Oceans · doi:10.1029/jc092ic02p01683 · Cited by 258 · see citing works
Characteristic patterns of the circulation in the Santa Barbara Channel
Harms, S., & Winant, C. D. (1998) · Journal of Geophysical Research Atmospheres · doi:10.1029/97jc02393 · Cited by 255 · see citing works
Chelton, D. B., & Wentz, F. J. (2005) · Bulletin of the American Meteorological Society · doi:10.1175/bams-86-8-1097 · Cited by 232 · see citing works
Summertime Coupling between Sea Surface Temperature and Wind Stress in the California Current System
Chelton, D. B., Schlax, M. G., & Samelson, R. M. (2007) · Journal of Physical Oceanography · doi:10.1175/jpo3025.1 · Cited by 222 · see citing works
Mesoscale patterns in the Cape São Vicente (Iberian Peninsula) upwelling region
Relvas, P., & Barton, E. D. (2002) · Journal of Geophysical Research: Oceans · doi:10.1029/2000jc000456 · Cited by 205 · see citing works
The Great 2006 Heat Wave over California and Nevada: Signal of an Increasing Trend
Gershunov, A., Cayan, D. R., & Iacobellis, S. F. (2009) · Journal of Climate · doi:10.1175/2009jcli2465.1 · Cited by 204 · see citing works
Water mass circulation on the continental shelf of the Gulf of Cádiz
García‐Lafuente, J., Delgado, J., Criado‐Aldeanueva, F., Bruno, M., Río, J. D., & Vargas, J. M. (2006) · Deep Sea Research Part II Topical Studies in Oceanography · doi:10.1016/j.dsr2.2006.04.011 · Cited by 173 · see citing works
Jianping Gan, A., & Allen, J. S. (2002) · Journal of Geophysical Research Atmospheres · doi:10.1029/2000jc000768 · Cited by 154 · see citing works
Kosro, P. M. (1987) · Journal of Geophysical Research Atmospheres · doi:10.1029/jc092ic02p01637 · Cited by 138 · see citing works
Statistical analysis of the surface circulation of the California Current
Swenson, M. S., & Niiler, P. P. (1996) · Journal of Geophysical Research Atmospheres · doi:10.1029/96jc02008 · Cited by 124 · see citing works
The large‐scale coastal wind field along the west coast of North America, 1981–1982
Halliwell, G. R., & Allen, J. S. (1987) · Journal of Geophysical Research Atmospheres · doi:10.1029/jc092ic02p01861 · Cited by 115 · see citing works
Formation, Evolution, and Dissipation of Coastal Sea Fog
Koracin, D. R., Businger, J. A., Dorman, C. E., & Lewis, J. M. (2005) · Boundary-Layer Meteorology · doi:10.1007/s10546-005-2772-5 · Cited by 103 · see citing works
Long‐term and seasonal trends in stratification in the California Current, 1950–1993
Palacios, D. M., Bograd, S. J., Mendelssohn, R., & Schwing, F. B. (2004) · Journal of Geophysical Research: Oceans · doi:10.1029/2004jc002380 · Cited by 99 · see citing works
Relvas, P., & Barton, E. D. (2004) · Continental Shelf Research · doi:10.1016/j.csr.2004.09.006 · Cited by 94 · see citing works
Wang, Y., Xu, H., & Xie, S. (2004) · Monthly Weather Review · doi:10.1175/mwr2812.1 · Cited by 94 · see citing works
Characteristic patterns of shelf circulation at the boundary between central and southern California
Winant, C. D., Dever, E. P., & Hendershott, M. C. (2003) · Journal of Geophysical Research Atmospheres · doi:10.1029/2001jc001302 · Cited by 94 · see citing works
Tang, W., Liu, W. T., & Stiles, B. W. (2004) · IEEE Transactions on Geoscience and Remote Sensing · doi:10.1109/tgrs.2004.831685 · Cited by 88 · see citing works
Statistical properties of near‐surface flow in the California Coastal Transition Zone
Brink, K. H., Beardsley, R. C., Niiler, P. P., Abbott, M. R., Huyer, A., Ramp, S. R., Stanton, T. P., & Stuart, D. W. (1991) · Journal of Geophysical Research Atmospheres · doi:10.1029/91jc01072 · Cited by 88 · see citing works
Iles, A. C., Gouhier, T. C., Menge, B. A., Lowndes, J. S., Haupt, A. J., & Lynch, M. C. (2011) · Global Change Biology · doi:10.1111/j.1365-2486.2011.02567.x · Cited by 87 · see citing works
Fore, A. G., Stiles, B. W., Chau, A. H., Williams, B. A., Dunbar, R. S., & Rodríguez, E. (2013) · IEEE Transactions on Geoscience and Remote Sensing · doi:10.1109/tgrs.2012.2235843 · Cited by 86 · see citing works
Melton, C., Washburn, L., & Gotschalk, C. C. (2009) · Journal of Geophysical Research Atmospheres · doi:10.1029/2009jc005397 · Cited by 76 · see citing works
Self-citationMixing and Available Potential Energy in a Boussinesq Ocean*
Huang, R. X. (1998) · Journal of Physical Oceanography · doi:10.1175/1520-0485(1998)028 · Cited by 62 · see citing works
The variability of California summertime marine stratus: Impacts on surface air temperatures
Iacobellis, S. F., & Cayan, D. R. (2013) · Journal of Geophysical Research Atmospheres · doi:10.1002/jgrd.50652 · Cited by 60 · see citing works
Dickinson, R. E., & Ridley, E. C. (1972) · Journal of the Atmospheric Sciences · doi:10.1175/1520-0469(1972)029 · Cited by 59 · see citing works
Washburn, L., Fewings, M. R., Melton, C., & Gotschalk, C. C. (2011) · Journal of Geophysical Research Atmospheres · doi:10.1029/2011jc007502 · Cited by 58 · see citing works
Self-citationStocker, T. F., & Wright, D. G. (1991) · Journal of Physical Oceanography · doi:10.1175/1520-0485(1991)021 · Cited by 57 · see citing works
Atmospheric forcing of the Oregon coastal ocean during the 2001 upwelling season
Bane, J. M., Levine, M. D., Samelson, R. M., Haines, S. M., Meaux, M. F., Perlin, N., Kosro, P. M., & Boyd, T. (2005) · Journal of Geophysical Research Atmospheres · doi:10.1029/2004jc002653 · Cited by 55 · see citing works
Current reversals as determinants of intertidal recruitment on the central Oregon coast
Dudas, S. E., Grantham, B. A., Kirincich, A., Menge, B. A., Lubchenco, J., & Barth, J. A. (2008) · ICES Journal of Marine Science · doi:10.1093/icesjms/fsn179 · Cited by 48 · see citing works
Elements of physical oceanography : a derivative of encyclopedia of ocean sciences
Thorpe, S. A. (2009) · Academic Press eBooks · Cited by 46 · see citing works
Limited recruitment during relaxation events: Larval advection and behavior in an upwelling system
Morgan, S. G., Fisher, J. L., McAfee, S. T., Largier, J. L., & Halle, C. (2012) · Limnology and Oceanography · doi:10.4319/lo.2012.57.2.0457 · Cited by 39 · see citing works
Holbach, H. M., & Bourassa, M. A. (2013) · Monthly Weather Review · doi:10.1175/mwr-d-13-00218.1 · Cited by 38 · see citing works
Nearshore currents on the southern Namaqua shelf of the Benguela upwelling system
Fawcett, A., Pitcher, G. C., & Shillington, F. A. (2008) · Continental Shelf Research · doi:10.1016/j.csr.2008.02.005 · Cited by 35 · see citing works
Fewings, M. R., Washburn, L., & Ohlmann, J. C. (2015) · Progress In Oceanography · doi:10.1016/j.pocean.2015.10.001 · Cited by 33 · see citing works
Self-citationBane, J. M., Spitz, Y. H., Letelier, R. M., & Peterson, W. T. (2007) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0700926104 · Cited by 33 · see citing works
Uncertainty in Scatterometer-Derived Vorticity
Bourassa, M. A., & Ford, K. M. (2009) · Journal of Atmospheric and Oceanic Technology · doi:10.1175/2009jtecho689.1 · Cited by 26 · see citing works
Synoptic forcing of wind relaxations at Pt. Conception, California
Fewings, M. R., Washburn, L., Dorman, C. E., Gotschalk, C., & Lombardo, K. A. (2016) · Journal of Geophysical Research Oceans · doi:10.1002/2016jc011699 · Cited by 24 · see citing works
Self-citationAdjustment of the marine atmospheric boundary layer to the large‐scale bend in the California coast
Edwards, K. A., Rogers, D. P., & Dorman, C. E. (2002) · Journal of Geophysical Research Atmospheres · doi:10.1029/2001jc000807 · Cited by 24 · see citing works
Time-Varying Across-Shelf Ekman Transport and Vertical Eddy Viscosity on the Inner Shelf
Kirincich, A., & Barth, J. A. (2008) · Journal of Physical Oceanography · doi:10.1175/2008jpo3969.1 · Cited by 23 · see citing works
Suanda, S. H., Kumar, N., Miller, A. J., Lorenzo, E. D., Haas, K., Cai, D., Edwards, C. A., Washburn, L., Fewings, M. R., Torres, R., et al. (2016) · Journal of Geophysical Research Oceans · doi:10.1002/2016jc011919 · Cited by 22 · see citing works
Self-citationSynoptic-Scale Structure and the Character of Coastally Trapped Wind Reversals
Nuss, W. A. (2007) · Monthly Weather Review · doi:10.1175/mwr3267.1 · Cited by 15 · see citing works
Cessation of the 22–25 June 2006 Coastally Trapped Wind Reversal
Rahn, D. A., & Parish, T. R. (2010) · Journal of Applied Meteorology and Climatology · doi:10.1175/2010jamc2242.1 · Cited by 12 · see citing works
Holbach, H. M., & Bourassa, M. A. (2017) · IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing · doi:10.1109/jstars.2016.2642583 · Cited by 11 · see citing works
QuikSCAT Level 2B Ocean Wind Vectors in 12.5km Slice Composites Version 3
SeaPAC (2013) · Earth Observing System Data and Information System · doi:10.5067/qsx12-l2b01 · Cited by 8 · see citing works
REMSS (2014) · Earth Observing System Data and Information System · doi:10.5067/ghams-2pr01 · Cited by 1 · see citing works
Chenoweth, M. (1993) · Journal of Climate · doi:10.1175/1520-0442(1993)006
Rajagopalan (2002) · doi:10.1175/1520-0493(2002)130
Vauclair (2004) · doi:10.1175/1520-0485(2004)034
Flagged first, then by citations
2 of the 73 references couldn’t be matched to a known paper.
Cited by
Sorted by citations
Remotely Sensed Winds and Wind Stresses for Marine Forecasting and Ocean Modeling
Bourassa, M. A., Meißner, T., Cerovečki, I., Chang, P. S., Dong, X., Chiara, G. D., Donlon, C. J., Dukhovskoy, D. S., Elya, J., Fore, A. G., et al. (2019) · Frontiers in Marine Science · doi:10.3389/fmars.2019.00443 · Cited by 128 · see citing works
Self-citationBôas, A. B. V., Ardhuin, F., Ayet, A., Bourassa, M. A., Brandt, P. N., Chapron, B., Cornuelle, B. D., Farrar, J. T., Fewings, M. R., Fox‐Kemper, B., et al. (2019) · Frontiers in Marine Science · doi:10.3389/fmars.2019.00425 · Cited by 124 · see citing works
Self-citationRegional Structure in the Marine Heat Wave of Summer 2015 Off the Western United States
Fewings, M. R., & Brown, K. (2019) · Frontiers in Marine Science · doi:10.3389/fmars.2019.00564 · Cited by 41 · see citing works
Self-citationWalter, R. K., Armenta, K. J., Shearer, B., Robbins, I., & Steinbeck, J. R. (2018) · Continental Shelf Research · doi:10.1016/j.csr.2018.01.002 · Cited by 39 · see citing works
Large‐Scale Conditions for the Record‐Setting Southern California Marine Heatwave of August 2018
Wei, X., Li, K., Kilpatrick, T. J., Wang, M., & Xie, S. (2021) · Geophysical Research Letters · doi:10.1029/2020gl091803 · Cited by 18 · see citing works
Thomsen, S., Capet, X., & Echevin, V. (2021) · Journal of Physical Oceanography · doi:10.1175/jpo-d-20-0294.1 · Cited by 17 · see citing works
Juliano, T. W., Coggon, M. M., Thompson, G. J., Rahn, D. A., Seinfeld, J. H., Sorooshian, A., & Lebo, Z. J. (2019) · Journal of the Atmospheric Sciences · doi:10.1175/jas-d-18-0317.1 · Cited by 13 · see citing works
Large-Scale Structure in Wind Forcing over the California Current System in Summer
Fewings, M. R. (2017) · Monthly Weather Review · doi:10.1175/mwr-d-17-0106.1 · Cited by 13 · see citing works
Self-citationCooley, K. M., Fewings, M. R., Lerczak, J. A., O’Neill, L. W., & Brown, K. (2022) · Journal of Geophysical Research Oceans · doi:10.1029/2021jc018338 · Cited by 12 · see citing works
Self-citationA New Perspective on Coastally Trapped Disturbances Using Data from the Satellite Era
Juliano, T. W., Lebo, Z. J., Thompson, G., & Rahn, D. A. (2018) · Bulletin of the American Meteorological Society · doi:10.1175/bams-d-18-0002.1 · Cited by 9 · see citing works
Howard, R. A., Ciannelli, L., Wakefield, W. W., & Fewings, M. R. (2021) · Fisheries Oceanography · doi:10.1111/fog.12553 · Cited by 3 · see citing works
Self-citationWang, M., Shen, S. S. P., Xie, S., Wang, X., & Du, Y. (2025) · Journal of Physical Oceanography · doi:10.1175/jpo-d-24-0108.1 · Cited by 1 · see citing works
Godínez‐Padilla, C. J., & Castillo‐Geniz, J. L. (2024) · Marine Environmental Research · doi:10.1016/j.marenvres.2024.106555
Retracted
- Authors
- Flynn, K. R., Fewings, M. R., Gotschalk, C., & Lombardo, K.
- Affiliations
- Goddard Institute for Space Studies (US)
- University of Connecticut (US)
- University of California, Santa Barbara (US)
- Corresponding author
- Fewings, Melanie R.
- Venue
- Journal of Geophysical Research: Oceans
- Publisher
- American Geophysical Union (AGU)
- Published
- 2017-03
- Volume
- 122
- Issue
- 3
- Pages
- 2574-2594
- ISSN
- 2169-9275 (ISSN-L)
- 2169-9291
- OpenAlex
- W2594809603
- Cited by
- 13
- References
- 73
- Citations by year
- 2025: 1 · 2024: 1 · 2022: 1 · 2021: 3 · 2019: 4 · 2018: 2 · 2017: 1
- FWCI
- 1.27
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- Journal of Geophysical Research Oceans (publishedVersion)
- Funders
- National Science Foundation (OCE‐1031893 and OCE‐1232779)
- 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 › Earth and Planetary Sciences › Atmospheric Science › Meteorological Phenomena and Simulations
- Keywords
- wind relaxation, sea surface temperature anomalies, air-sea heat flux, latent heat flux, coastal upwelling, California Current, Pacific Northwest, cloud cover, Ekman pumping, mixed layer entrainment
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review