osuChlaClimate
eng
UTF8
dataset
service
Bob Simons
NOAA NMFS SWFSC Environmental Research Division
+1 831-658-3205
99 Pacific St, Suite 255A
Monterey
CA
93940
USA
bob.simons@noaa.gov
pointOfContact
2014-09-25
ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
4
column
1201
0.025
row
1161
0.025
vertical
1
temporal
12
2631272.727272727
area
OSU Chlorophyll Climatology, MODIS Aqua, West US, July 2002-June 2013
2014-09-25
creation
coastwatch.pfeg.noaa.gov
osuChlaClimate
Craig Risien
Oregon State University
crisien@coas.oregonstate.edu
http://cioss.coas.oregonstate.edu/CIOSS/Documents/Published_Reports/Risien_USWC-Sat-Climatology_5-8-14.pdf
information
web browser
Background Information
Background information from the source
information
originator
This suite of CHLA and SST climatology and anomaly data products are derived from daily, 0.0125 degree x 0.0125 degree, MODIS Aqua CHLA and SST fields that cover the California Current System (22N - 51N, 155W - 105W) for the 11-year period July 2002 through June 2013. These daily fields, obtained from the NOAA CoastWatch West Coast Regional Node website, were processed using a successive 3x3, 5x5 and 7x7 grid cell hybrid median filtering technique. This technique was found to effectively reduce noise in the daily fields while maintaining features and detail in important regions such as capes and headlands. The resulting median filtered daily fields were then linearly interpolated to a 0.025 degree x 0.025 degree grid and averaged to create 132 monthly mean fields. The seasonal cycles at each 0.025 degree x 0.025 degree grid cell were obtained by fitting each multiyear time series of monthly means to a nine-parameter regression model consisting of a constant plus four harmonics (frequencies of N/(1-year), N-1,4; Risien and Chelton 2008, JPO). Even with the median filtering and the temporal averaging of the daily fields, the highly inhomogeneous nature of the MODIS fields still resulted in regression coefficients that were excessively noisy. We therefore applied the same successive 3x3, 5x5 and 7x7 hybrid median filtering technique, described above, to the regression coefficients before finally spatially smoothing the coefficients using a loess smoother (Schlax et al. 2001, JTECH) with filter cutoff wavelengths of 0.25 degree latitude by 0.25 degree longitude. The seasonal cycles were then calculated from the filtered regression coefficients for each 0.025 degree x 0.025 degree grid cell using the mean and all four harmonics. It is important to note that THIS SUITE OF DATA PRODUCTS IS HIGHLY EXPERIMENTAL and is strictly intended for scientific evaluation by experienced marine scientists.
Craig Risien
Oregon State University
crisien@coas.oregonstate.edu
http://cioss.coas.oregonstate.edu/CIOSS/Documents/Published_Reports/Risien_USWC-Sat-Climatology_5-8-14.pdf
information
web browser
Background Information
Background information from the source
information
pointOfContact
aqua
atmospheric
chemistry
chlorophyll
climatology
coast
college
color
concentration
earth
fields
high
modis
ocean
ocean color
oceans
oregon
resolution
sciences
sea
seawater
state
u.s.
university
water
west
west coast
theme
Oceans > Ocean Chemistry > Chlorophyll
theme
GCMD Science Keywords
Oregon State University
project
time
altitude
latitude
longitude
concentration_of_chlorophyll_in_sea_water
theme
CF-26
The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.
Oregon State University
largerWorkCitation
project
Unidata Common Data Model
Grid
largerWorkCitation
project
eng
geoscientificInformation
1
-135.0
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22.0
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2002-07-01T00:00:00Z
2003-06-01T00:00:00Z
0.0
0.0
OSU Chlorophyll Climatology, MODIS Aqua, West US, July 2002-June 2013
2014-09-25
creation
Craig Risien
Oregon State University
crisien@coas.oregonstate.edu
http://cioss.coas.oregonstate.edu/CIOSS/Documents/Published_Reports/Risien_USWC-Sat-Climatology_5-8-14.pdf
information
web browser
Background Information
Background information from the source
information
originator
This suite of CHLA and SST climatology and anomaly data products are derived from daily, 0.0125 degree x 0.0125 degree, MODIS Aqua CHLA and SST fields that cover the California Current System (22N - 51N, 155W - 105W) for the 11-year period July 2002 through June 2013. These daily fields, obtained from the NOAA CoastWatch West Coast Regional Node website, were processed using a successive 3x3, 5x5 and 7x7 grid cell hybrid median filtering technique. This technique was found to effectively reduce noise in the daily fields while maintaining features and detail in important regions such as capes and headlands. The resulting median filtered daily fields were then linearly interpolated to a 0.025 degree x 0.025 degree grid and averaged to create 132 monthly mean fields. The seasonal cycles at each 0.025 degree x 0.025 degree grid cell were obtained by fitting each multiyear time series of monthly means to a nine-parameter regression model consisting of a constant plus four harmonics (frequencies of N/(1-year), N-1,4; Risien and Chelton 2008, JPO). Even with the median filtering and the temporal averaging of the daily fields, the highly inhomogeneous nature of the MODIS fields still resulted in regression coefficients that were excessively noisy. We therefore applied the same successive 3x3, 5x5 and 7x7 hybrid median filtering technique, described above, to the regression coefficients before finally spatially smoothing the coefficients using a loess smoother (Schlax et al. 2001, JTECH) with filter cutoff wavelengths of 0.25 degree latitude by 0.25 degree longitude. The seasonal cycles were then calculated from the filtered regression coefficients for each 0.025 degree x 0.025 degree grid cell using the mean and all four harmonics. It is important to note that THIS SUITE OF DATA PRODUCTS IS HIGHLY EXPERIMENTAL and is strictly intended for scientific evaluation by experienced marine scientists.
ERDDAP OPeNDAP
1
-135.0
-105.0
22.0
51.0
seconds
2002-07-01T00:00:00Z
2003-06-01T00:00:00Z
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tight
OPeNDAPDatasetQueryAndAccess
http://coastwatch.pfeg.noaa.gov/erddap/griddap/osuChlaClimate
OPeNDAP:OPeNDAP
OPeNDAP
ERDDAP's griddap OPeNDAP service. Add different extensions (e.g., .html, .das, .dds) for different purposes.
download
OSU Chlorophyll Climatology, MODIS Aqua, West US, July 2002-June 2013
2014-09-25
creation
Craig Risien
Oregon State University
crisien@coas.oregonstate.edu
http://cioss.coas.oregonstate.edu/CIOSS/Documents/Published_Reports/Risien_USWC-Sat-Climatology_5-8-14.pdf
information
web browser
Background Information
Background information from the source
information
originator
This suite of CHLA and SST climatology and anomaly data products are derived from daily, 0.0125 degree x 0.0125 degree, MODIS Aqua CHLA and SST fields that cover the California Current System (22N - 51N, 155W - 105W) for the 11-year period July 2002 through June 2013. These daily fields, obtained from the NOAA CoastWatch West Coast Regional Node website, were processed using a successive 3x3, 5x5 and 7x7 grid cell hybrid median filtering technique. This technique was found to effectively reduce noise in the daily fields while maintaining features and detail in important regions such as capes and headlands. The resulting median filtered daily fields were then linearly interpolated to a 0.025 degree x 0.025 degree grid and averaged to create 132 monthly mean fields. The seasonal cycles at each 0.025 degree x 0.025 degree grid cell were obtained by fitting each multiyear time series of monthly means to a nine-parameter regression model consisting of a constant plus four harmonics (frequencies of N/(1-year), N-1,4; Risien and Chelton 2008, JPO). Even with the median filtering and the temporal averaging of the daily fields, the highly inhomogeneous nature of the MODIS fields still resulted in regression coefficients that were excessively noisy. We therefore applied the same successive 3x3, 5x5 and 7x7 hybrid median filtering technique, described above, to the regression coefficients before finally spatially smoothing the coefficients using a loess smoother (Schlax et al. 2001, JTECH) with filter cutoff wavelengths of 0.25 degree latitude by 0.25 degree longitude. The seasonal cycles were then calculated from the filtered regression coefficients for each 0.025 degree x 0.025 degree grid cell using the mean and all four harmonics. It is important to note that THIS SUITE OF DATA PRODUCTS IS HIGHLY EXPERIMENTAL and is strictly intended for scientific evaluation by experienced marine scientists.
Open Geospatial Consortium Web Map Service (WMS)
1
-135.0
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seconds
2002-07-01T00:00:00Z
2003-06-01T00:00:00Z
0.0
0.0
tight
GetCapabilities
http://coastwatch.pfeg.noaa.gov/erddap/wms/osuChlaClimate/request?service=WMS&version=1.3.0&request=GetCapabilities
OGC:WMS
OGC-WMS
Open Geospatial Consortium Web Map Service (WMS)
download
physicalMeasurement
chla
float
Concentration Of Chlorophyll In Sea Water
Bob Simons
NOAA NMFS SWFSC Environmental Research Division
+1 831-658-3205
99 Pacific St, Suite 255A
Monterey
CA
93940
USA
bob.simons@noaa.gov
distributor
OPeNDAP
DAP/2.0
http://coastwatch.pfeg.noaa.gov/erddap/griddap/osuChlaClimate.html
template
Data Subset Form
ERDDAP's version of the OPeNDAP .html web page for this dataset. Specify a subset of the dataset and download the data via OPeNDAP or in many different file types.
download
http://coastwatch.pfeg.noaa.gov/erddap/griddap/osuChlaClimate.graph
template
Make-A-Graph Form
ERDDAP's Make-A-Graph .html web page for this dataset. Create an image with a map or graph of a subset of the data.
mapDigital
This record was created from dataset metadata by ERDDAP Version 1.52