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GBR - MODIS Aqua satellite Chlorophyll-a Data (UQ)

Posted on 10 June 2010

Ocean Colour data were derived from the moderate resolution imaging spectroradiometer (MODIS) aboard the National Aeronautics and Space Administration (NASA) Aqua satellite. Data were acquired directly from the NASA site (oceancolor.gsfc.nasa.gov). Daily and monthly mean chlorophyll-a files have been generated at one kilometre spatial resolution for the GBR region from 10.0^oS to 30.0^oS and 142.0^oE to 158.0^oE for the period July 2002 to March 2010, and sub-regions thereof. Monthly chlorophyll climatologies and longterm mean seasonal chlorophyll climatalogies have been generated for the eight-year period. Geophysical data are in logarithmic scale.

Scarla Weeks

Custodian(s)

University of Queensland
NASA OBPG

Owner Institution(s)

netcdf A2010102 {
dimensions:
   fakeDim0 = 1920 ;
   fakeDim1 = 1536 ;

variables:
   short l3m_data(fakeDim0, fakeDim1) ;
        l3m_data:Fill = -1s ;
        l3m_data:Scaling = "logarithmic" ;
        l3m_data:Scaling Equation = "Base**((Slope*l3m_data) + Intercept) = Parameter value" ;
        l3m_data:Base = 10.f ;
        l3m_data:Slope = 5.0371258e-05f ;
        l3m_data:Intercept = -2.f ;

// global attributes:
        :Product Name = "A2010102.L3m_DAY_GBROC_CHLO_1_GBR" ;
        :Sensor Name = "HMODISA" ;
        :Sensor = "" ;
        :Title = "HMODISA Level-3 Standard Mapped Image" ;
        :Data Center = "" ;
        :Station Name = "" ;
        :Station Latitude = 0.f ;
        :Station Longitude = 0.f ;
        :Mission = "" ;
        :Mission Characteristics = "" ;
        :Sensor Characteristics = "" ;
        :Product Type = "regional" ;
        :Processing Version = "Unspecified" ;
        :Software Name = "smigen" ;
        :Software Version = "4.15" ;
        :Processing Time = "2010113022213000" ;
        :Input Files = "A2010102.L3b_DAY_GBROC.main" ;
        :Processing Control = "smigen par=A2010102.L3m_DAY_GBROC_CHLO_1_GBR.param" ;
        :Input Parameters = "IFILE = /data1/sdpsoper/vdc/vpu0/workbuf/A2010102.L3b_DAY_GBROC.main|OFILE = A2010102.L3m_DAY_GBROC_CHLO_1_GBR|PFILE = |PROD = chlor_a|PALFILE = DEFAULT|PROCESSING VERSION = Unspecified|MEAS = 1|STYPE = 0|DATAMIN = 0.000000|DATAMAX = 0.000000|LONWEST = 142.000000|LONEAST = 158.000000|LATSOUTH = -30.000000|LATNORTH = -10.000000|RESOLUTION = 1km|PROJECTION = RECT|GAP_FILL = 2|SEAM_LON = -180.000000|PRECISION=I" ;
        :L2 Flag Names = "ATMFAIL,LAND,HILT,HISATZEN,CLDICE,CHLFAIL,NAVFAIL" ;
        :Period Start Year = 0s ;
        :Period Start Day = 0s ;
        :Period End Year = 9999s ;
        :Period End Day = 999s ;
        :Start Time = "2010102024508208" ;
        :End Time = "2010102043006615" ;
        :Start Year = 2010s ;
        :Start Day = 102s ;
        :Start Millisec = 9908208 ;
        :End Year = 2010s ;
        :End Day = 102s ;
        :End Millisec = 16206615 ;
        :Start Orbit = 42229 ;
        :End Orbit = 42230 ;
        :Orbit = 42230 ;
        :Map Projection = "Equidistant Cylindrical" ;
        :Latitude Units = "degrees North" ;
        :Longitude Units = "degrees East" ;
        :Northernmost Latitude = -10.f ;
        :Southernmost Latitude = -30.f ;
        :Westernmost Longitude = 142.f ;
        :Easternmost Longitude = 158.f ;
        :Latitude Step = 0.010416667f ;
        :Longitude Step = 0.010416667f ;
        :SW Point Latitude = -29.994791f ;
        :SW Point Longitude = 142.0052f ;
        :Data Bins = 1521464 ;
        :Number of Lines = 1920 ;
        :Number of Columns = 1536 ;
        :Parameter = "Chlorophyll a concentration" ;
        :Measure = "Mean" ;
        :Units = "mg m^-3" ;
        :Scaling = "logarithmic" ;
        :Scaling Equation = "Base**((Slope*l3m_data) + Intercept) = Parameter value" ;
        :Base = 10.f ;
        :Slope = 5.0371258e-05f ;
        :Intercept = -2.f ;
        :Data Minimum = 4.e-06f ;
        :Data Maximum = 439.48306f ;
        :Suggested Image Scaling Minimum = 0.0099999998f ;
        :Suggested Image Scaling Maximum = 20.f ;
        :Suggested Image Scaling Type = "LOG" ;
        :Suggested Image Scaling Applied = "Yes" ;
}

Data Units

GBR and Coral Sea regional waters 10.0oS to 30.0oS and 142.0oE to 158.0oE

Region & Spatial Extent

2002 - 2010

Data Collection

Updated daily

Maintenance & Update Frequency

Copyright remains with the NASA OBPG. Data accessed from the NASA OBPG is Public Good, but users must acknowledge NASA. Processed data and products are available from the University of Queensland OceanSpace Research Group in a collaborative framework.

Resource Constraints

GBR_UQ_MODIS-chlor

Dataset Short Name

Topics