http://lod.bco-dmo.org/id/dataset/472613
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2013-12-04
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Sea surface temperature along the north-central California Current from 1988-2010(California Current upwelling modes project)
2013-12-03
publication
2013-12-03
revision
BCO-DMO Linked Data URI
2013-12-03
creation
http://lod.bco-dmo.org/id/dataset/472613
Bryan Black
Oregon State University
principalInvestigator
Steven Bograd
National Oceanic and Atmospheric Administration - Southwest Fisheries Science Center
principalInvestigator
William Sydeman
Farallon Institute for Advanced Ecosystem Research
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Black, B., Sydeman, W., Bograd, S. (2013) Sea surface temperature along the north-central California Current from 1988-2010(California Current upwelling modes project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 2013-12-03) Version Date 2013-12-03 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/472613 [access date]
Sea surface temperature along the north-central California Current, 1988-2010 Dataset Description: Methods and Sampling: <p><strong>Upwelling: Winds and SST</strong><br />
We quantified local upwelling using two variables: 1) an estimate of offshore Ekman transport (Uw) calculated from buoy winds and 2) SST as an integrated estimate of ocean conditions that reflects the shoaling and mixing of deep water in response to upwelling winds, alongshore and cross-shore transport, and air-sea heat fluxes as well as variability in water column characteristics that could impact the upwelling process. &nbsp;Hourly wind data, from 1988 to 2010, were obtained from 12 NOAA buoys located from 34 to 47°N along the continental shelf of the U.S. west coast, available at&nbsp;<a href="http://www.ndbc.noaa.gov/">http://www.ndbc.noaa.gov</a>. &nbsp;Missing data ranged from 4% at buoy 46025 to 26% at buoy 46041, with an average of 15% in all buoys. &nbsp;Gaps were 77 days long on average, with the longest gaps ranging from 4 months at buoy 46025 to 1.8 years at buoy 46011. &nbsp;Data were highly correlated (r &gt; 0.9 for wind and &gt; 0.75 for SST, except for buoy 46025), so neighboring buoys could be used to fill the gaps via linear regressions. &nbsp;</p>
<p>Wind stress was calculated from wind speed following Large and Pond (1981), and the alongshore component was calculated using the orientation of the principal axis of the wind, which largely follows the coastal orientation (details in García-Reyes and Largier 2010). &nbsp;We compared these variables to the upwelling index (UI) provided by NOAA (Schwing and others 1996). &nbsp;The UI quantifies the offshore Ekman transport caused by alongshore wind stress, but is calculated from cross-shore gradients in sea level pressure. &nbsp;While UI data is provided at 3° intervals along the Northeast Pacific coast, the scale of the cross-shore sea level pressure used in its calculation is 6°. &nbsp;Here, we considered data (<a href="http://www.pfeg.noaa.gov/products/las.html">http://www.pfeg.noaa.gov/products/las.html</a>) from 33 to 48°N across the 1988 to 2010 interval shared by the buoy data.&nbsp;</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1130125 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1130125
completed
Bryan Black
Oregon State University
361-749-6789
Marine Science Institute 750 Channel View Drive
Port Aransas
TX
78373
USA
bryan.black@utexas.edu
pointOfContact
Steven Bograd
National Oceanic and Atmospheric Administration - Southwest Fisheries Science Center
831-648-8515
99 Pacific Street, Suite 255A
Monterey
CA
93940
USA
steven.bograd@noaa.gov
pointOfContact
William Sydeman
Farallon Institute for Advanced Ecosystem Research
707-478-1381
101 H St. Suite Q
Petaluma
CA
94952-1092
USA
wsydeman@faralloninstitute.org
pointOfContact
asNeeded
Dataset Version: 2013-12-03
Unknown
lat
month
year
temp_ss
theme
None, User defined
latitude
month of year
year
sea surface temperature
featureType
BCO-DMO Standard Parameters
Black_model
service
Deployment Activity
Hatfield Marine Station, OSU
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
History and Future of Coastal Upwelling Modes and Biological Responses in the California Current
https://osprey.bco-dmo.org/project/472319
History and Future of Coastal Upwelling Modes and Biological Responses in the California Current
<p><em>From NSF award abstract:</em></p>
<p>Climate variability on multiple temporal scales is increasingly recognized as a major factor influencing the structure, functioning, and productivity of the California Current Ecosystem (CCE). Yet, despite many long-term and integrative studies, a detailed understanding of climatic impacts on upwelling and biological processes is still lacking, compromising our abilities to assess important concepts such as ecosystem "health" and "resilience." To address these issues in the central-northern CCE, the PIs have recently collated and analyzed records of rockfish and salmon growth and seabird reproductive success with respect to upwelling variability (NSF award #0929017). These diverse, multi-decadal time series revealed the importance of wintertime upwelling on ecosystem structure and function, even though upwelling, a principal driver of productivity in the CCE, is largely a summertime process. This research led to an unexpected discovery that winter and summer upwelling vary independently of one another in distinct seasonal "modes", with some biological processes affected by the winter mode and others by the summer mode. This is of significance because the summer mode shows a long-term increase (despite inter-decadal variability) while the winter mode does not.</p>
<p>In this new project, the PIs will test the overarching hypothesis that upwelling modes are forced by contrasting atmospheric-oceanographic processes, exhibit contrasting patterns of low- and high-frequency variability, and will be differentially impacted by global climate change with corresponding impacts on biology. To address this hypothesis the PIs propose a three-tiered approach to better understand seasonal upwelling modes and their differential impacts on biology of the CCE. First, they will examine the responses of an entirely new suite of species to upwelling modes, including Pacific sardine (recruitment), black rockfish (growth), rhinoceros auklet and Brandt's cormorant (survival), and coho salmon (survival). Previously, coarsely resolved upwelling indices were used in these analyses, but the PIs now will integrate winds and temperatures from local buoy data to better capture climate variability on finer timescales. Second, they will derive a more mechanistic understanding of seasonal upwelling modes and use this information in combination with global climate models to forecast upwelling responses under various climate-change scenarios. Third, preliminary results indicate that tree-ring data co-vary with the fish and seabirds and are similarly sensitive to a driver of winter upwelling, the Northern Oscillation Index (NOI). The PIs will use tree-ring data to provide a 300-400 year reconstruction of the winter NOI to assess the historical range of variability in upwelling mean and variance. This study will reveal the past, present forcing, and potential future of upwelling and its biological consequences in the California Current.</p>
<p><em>Related Publications:</em><br />
García-Reyes, M., W. J. Sydeman, S. A. Thompson, B. A. Black, R. R. Rykaczewski, J. A. Thayer, and S. J. Bograd. 2013. Integrated assessment of wind effects on Central California’s pelagic ecosystem. Ecosystems. DOI: <a href="http://dx.doi.org/10.1007/s10021-013-9643-6" target="_blank">10.1007/s10021-013-9643-6</a>. </p>
California Current upwelling modes
largerWorkCitation
project
eng; USA
oceans
Hatfield Marine Station, OSU
2013-12-03
North-central California Current between approx 36N, 122W and 39N, 125W
0
BCO-DMO catalogue of parameters from Sea surface temperature along the north-central California Current from 1988-2010(California Current upwelling modes project)
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/472616.rdf
Name: lat
Units: decimal degrees
Description: <p>latitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/472617.rdf
Name: month
Units: integer 1 to 12
Description: <p>month - local time</p>
http://lod.bco-dmo.org/id/dataset-parameter/472618.rdf
Name: year
Units: YYYY
Description: <p>year</p>
http://lod.bco-dmo.org/id/dataset-parameter/472619.rdf
Name: temp_ss
Units: degrees Celsius
Description: <p>sea surface temperature</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
24213
https://datadocs.bco-dmo.org/file/ZZZgKPJHM33qwj/sst2.csv
sst2.csv
Primary data file for dataset ID 472613
download
https://osprey.bco-dmo.org/dataset/472613/data/download
download
onLine
dataset
<p><strong>Upwelling: Winds and SST</strong><br />
We quantified local upwelling using two variables: 1) an estimate of offshore Ekman transport (Uw) calculated from buoy winds and 2) SST as an integrated estimate of ocean conditions that reflects the shoaling and mixing of deep water in response to upwelling winds, alongshore and cross-shore transport, and air-sea heat fluxes as well as variability in water column characteristics that could impact the upwelling process. &nbsp;Hourly wind data, from 1988 to 2010, were obtained from 12 NOAA buoys located from 34 to 47°N along the continental shelf of the U.S. west coast, available at&nbsp;<a href="http://www.ndbc.noaa.gov/">http://www.ndbc.noaa.gov</a>. &nbsp;Missing data ranged from 4% at buoy 46025 to 26% at buoy 46041, with an average of 15% in all buoys. &nbsp;Gaps were 77 days long on average, with the longest gaps ranging from 4 months at buoy 46025 to 1.8 years at buoy 46011. &nbsp;Data were highly correlated (r &gt; 0.9 for wind and &gt; 0.75 for SST, except for buoy 46025), so neighboring buoys could be used to fill the gaps via linear regressions. &nbsp;</p>
<p>Wind stress was calculated from wind speed following Large and Pond (1981), and the alongshore component was calculated using the orientation of the principal axis of the wind, which largely follows the coastal orientation (details in García-Reyes and Largier 2010). &nbsp;We compared these variables to the upwelling index (UI) provided by NOAA (Schwing and others 1996). &nbsp;The UI quantifies the offshore Ekman transport caused by alongshore wind stress, but is calculated from cross-shore gradients in sea level pressure. &nbsp;While UI data is provided at 3° intervals along the Northeast Pacific coast, the scale of the cross-shore sea level pressure used in its calculation is 6°. &nbsp;Here, we considered data (<a href="http://www.pfeg.noaa.gov/products/las.html">http://www.pfeg.noaa.gov/products/las.html</a>) from 33 to 48°N across the 1988 to 2010 interval shared by the buoy data.&nbsp;</p>
Specified by the Principal Investigator(s)
<p>To investigate variability in upwelling with respect to season, we computed the monthly mean, standard deviation and coefficient of variation for each physical variable (Uw, SST, and UI). &nbsp;Subsequently, we conducted a Principal Component Analysis (PCA) to explore shared patterns of variability among these time series, which were extracted and used as multivariate indices of the CCE. &nbsp;Given that upwelling varies among locations, among season and among years (García-Reyes and Largier 2012; Thompson and others 2012), we arranged each physical data variable (Uw, SST and UI) into a three-dimensional matrix consisting of 12 locations x 12 months x 23 years; resulting components were labeled as PCUw, PCSST, and PCUI. &nbsp;Each column was normalized (zero mean and variance equal to 1 standard deviation) before calculating the PCA. &nbsp;Next we ran a PCA that combined Uw and SST data by arranging their data arrays into a single matrix with dimensions: 24 locations (12 Uw locations + 12 SST locations) x 12 months x 23 years. &nbsp;Resulting PCs, labeled as PCenv, captured the dominant and sub-dominant seasonal "modes" or patterns in upwelling and their interannual variability. &nbsp;PCs (scores) from the three physical variables (PCUw, PCSST, and PCUI) were compared to one another as well as to PCenv using Spearman ranked correlations. &nbsp;PCs with Eigenvalues &lt; 1 and explaining &lt; 10% of the variability in the data set were dropped from further analysis (Jolliffe 2002).&nbsp;</p>
<p>The 15 biological indicators included in the study were cross-correlated with one another to generally assess the extent to which they shared common patterns. &nbsp;Subsequently, we conducted a PCA (resulting components labeled as PCbio) using the nine longest (1982-2006) biological indicators. &nbsp;Biological indicators excluded from the PCA were correlated against the PCbio components as a measure of their agreement with dominant patterns in the longer datasets. &nbsp;Those that were significant at the p &lt; 0.05 level were retained. &nbsp;To summarize physical-biological interactions, the scores of the environmental PCs (PCUw, PCSST, PCUI and PCenv), the biological indices, and biological PCs (PCbio) were compared using Spearman correlations.</p>
<p><a href="http://bcodata.whoi.edu/CalCurrClimate/Black_biol-princ-comp.pdf" target="_blank">Biological Principal Component Sources and Loading (PDF)</a></p>
<p><a href="http://bcodata.whoi.edu/CalCurrClimate/Black_envir-princ-comp.pdf" target="_blank">Environmental Principal Component Sources and Loading (PDF)</a></p>
<p><strong>References, this data:</strong></p>
<p>Reyes, M., W. J. Sydeman, S. A. Thompson, B. A. Black, R. R. Rykaczewski, J. A. Thayer, and S. J. Bograd. 2013. Integrated assessment of wind effects on Central California’s pelagic ecosystem. Ecosystems. DOI: 10.1007/s10021-013-9643-6.</p>
<p><strong>Related References:</strong></p>
<p>García-Reyes M, Largier JL. 2012. Seasonality of coastal upwelling off central and northern California: new insights, including temporal and spatial variability. J Geophys Res 117:C03028.</p>
<p>Jolliffe IT. 2002. Principal component analysis. 2nd ed. Springer series in statistics. ISBN 0-387-95442-2.</p>
<p>Large WG, Pond S. 1981. Open ocean momentum flux measurements in moderate to strong winds. J Phys Oceanogr 11:324-36.</p>
<p>Thompson SA, Sydeman WJ, Santora JA, Black BA, Suryan RM, Calambokidis J, Peterson WT, Bograd SJ. 2012. Linking predators to seasonality of upwelling: using food web indicators and path analysis to infer trophic connections. Prog Oceanogr 101:106–20.</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
Deployment: Black_model
Black_model
OSU
laboratory
Black_model
Bryan Black
Oregon State University
OSU
laboratory