NOAA's Comprehensive Large Array-data Stewardship System

Ocean Color

Algorithm Code
Compression
Data Usage Guidance/Restrictions
Dataset Name
Dataset Size (Bytes)
Datatype
Inventory ID
Mask
Origin
Product Code
Region
Station
Temporal
Time
UCT

Algorithm Code

Two or three character algorithm code used to create this file. Valid values are: OC4, RS, RC The field is blank where not applicable.

Back to the top

Compression

Indicates if the file has been compressed or not. In case of a compressed file, the value is "Y", otherwise it is blank.

Back to the top

Data Usage Guidance/Restrictions

The operational data for this datatype is available to all registered CLASS users. Pre-operational data may be restricted to authorized users. To become an authorized user, send a request to the CLASS Help Desk.

Back to the top

Dataset Name

The name of the Ocean Color data set archived at CLASS; as below:

1. SeaWIFS Level 2 HDF: SourceYearDayStart-Time.Data-Type_Station-Code_Algorithm-Code.File-Format with each qualifier defined below:

Qualifier	Details
Source	One character identifying the source of the file. Recognized characters are: S = NASA O = OrbImage
Year	Full year with century, e.g., 2005, which identifies the year in which the spacecraft began recording the data set.
Day	Day of the year [001-366], which identifies the Julian day on which the spacecraft began recording the data set.
Start-Time	e.g. 135523, where "135523" denotes 13 hours 55 minutes 23 seconds UTC (to the nearest second) and represents the time at which spacecraft recording began.
Data-Type	A fixed field of two characters with value of L2 denoting a level 2 file
Station-Code	A four character code denoting the authorized receiving station of this data. The valid station-codes are: HBIO = Bedford Institute of Oceanography, Dartmouth, Nova Scotia, Canada HIGP = University of Hawaii, Honolulu HMBR = Moss Landing, California HNAV = NRL-SSC, MS (Stennis Space Center, Mississippi) HNSG = GSFC HRPT, NASA Greenbelt, MD (NASAGoddardSpaceFlightCenter) HORB = ORBIMAGE HROT = Rota, Spain HUAF = University of Alaska, Fairbanks HUSC = University of California, Santa Barbara HUSF = Saint Petersburg, Florida (University of South Florida) HUTX = University of Texas (Austin, Texas)
Algorithm-Code	Two or three character algorithm code used to create this file. Valid values are: OC4, RS, RC.
File-Format	A fixed field of one character with the value "Z" denoting the compressed format of the file.

2. SeaWIFS Level 1A HDF/SeaWIFS Level 2 HDF: SourceYearDayStart-Time.Data-Type_Station-Code.File-Format with each qualifier defined below:

Qualifier	Details
Source	One character identifying the source of the file. Recognized characters are: S = NASA O = OrbImage
Year	Full year with century, e.g., 2005, which identifies the year in which the spacecraft began recording the data set.
Day	Day of the year [001-366], which identifies the Julian day on which the spacecraft began recording the data set.
Start-Time	e.g. 135523, where "135523" denotes 13 hours 55 minutes 23 seconds UTC (to the nearest second) and represents the time at which spacecraft recording began.
Data-Type	A fixed field of two characters with value of L2 denoting a level 2 file
Station-Code	A four character code denoting the authorized receiving station of this data. The valid station-codes are: HBIO = Bedford Institute of Oceanography, Dartmouth, Nova Scotia, Canada HIGP = University of Hawaii, Honolulu HMBR = Moss Landing, California HNAV = NRL-SSC, MS (Stennis Space Center, Mississippi) HNSG = GSFC HRPT, NASA Greenbelt, MD HORB = ORBIMAGE(NASAGoddardSpaceFlightCenter) HOSA = SeaSpace, San Diego, CA HROT = Rota, Spain HUAF = University of Alaska, Fairbanks HUSC = University of California, Santa Barbara HUSF = Saint Petersburg, Florida (University of South Florida) HUTX = University of Texas (Austin, Texas) ODUL = ORBIMAGE (GeoEye), Dulles, VA
File-Format	A fixed field of one character with the value "Z" denoting the compressed format of the file.

3. SeaWIFS Level 2 Full Image: SourceYearDayStart-Time_Product-CodeMask_RegionStation-CodeAlgorithm-Code.File-Format with each qualifier defined below:

Qualifier	Details
Source	One character identifying the source of the file. Recognized characters are: S = NASA O = OrbImage
Year	Full year with century, e.g., 2005, which identifies the year in which the spacecraft began recording the data set.
Day	Day of the year [001-366], which identifies the Julian day on which the spacecraft began recording the data set.
Start-Time	e.g. 135523, where "135523" denotes 13 hours 55 minutes 23 seconds UTC (to the nearest second) and represents the time at which spacecraft recording began.
Product-Code	A seven character code denoting the product name of the data. The valid product code values are: nLw_490 nLw_555 chlor_a k4_9000 Rrs_555
Mask	A fixed field of four characters with the value "mask" denoting that there is land mask applied.
Region	CoastWatch regions to which the data applies. The valid values are: FullRegionNE = Northeast KirkWatersRegion = Kirk Waters FullRegionSE = Southeast FullRegionNEEX = Northeast Extended FullRegionSEEX = Southeast Extended FullRegionGulfofMexico = Gulf of Mexico FullRegionGreatLakes = Great Lakes EasternTropicalPacific = Eastern Tropical Pacific FullRegionSitka = Sitka FullRegionHawaii = Hawaii FullRegionWestCoast = West Coast FullRegionSouthAlaska = South Alaska FullRegionWestAlaska = West Alaska FullRegionNorthAlaska = North Alaska FullRegionCaribbean = Caribbean
Station-Code	A four character code preceded by a 0, denoting the authorized receiving station of this data. The valid station-codes are: HBIO = Bedford Institute of Oceanography, Dartmouth, Nova Scotia, Canada HIGP = University of Hawaii, Honolulu HMBR = Moss Landing, California HNAV = NRL-SSC, MS (Stennis Space Center, Mississippi) HNSG = GSFC HRPT, NASA Greenbelt, MD HORB = ORBIMAGE (NASAGoddardSpaceFlightCenter) HROT = Rota, Spain HUAF = University of Alaska, Fairbanks HUSC = University of California, Santa Barbara HUSF = Saint Petersburg, Florida (University of South Florida) HUTX = University of Texas (Austin, Texas)
Algorithm-Code	Two or three character algorithm code used to create this file. Valid values are: OC4, RS, RC.
File-Format	Three character field denoting the format of the file. Valid values are: TIF = GeoTiff GIF = Graphics Interchange Format

4. SeaWIFS Level 2 Full Image: SourceYearDayStart-Time_Product-CodeMask_RegionStation-Code.File-Format with each qualifier defined below:

Qualifier	Details
Source	One character identifying the source of the file. Recognized characters are: S = NASA O = OrbImage
Year	Full year with century, e.g., 2005, which identifies the year in which the spacecraft began recording the data set.
Day	Day of the year [001-366], which identifies the Julian day on which the spacecraft began recording the data set.
Start-Time	e.g. 135523, where "135523" denotes 13 hours 55 minutes 23 seconds UTC (to the nearest second) and represents the time at which spacecraft recording began.
Product-Code	A seven character code denoting the product name of the data. The valid product code values are: nLw_490 nLw_555 chlor_a k4_9000 Rrs_555
Mask	A fixed field of four characters with the value "mask" denoting that there is land mask applied.
Region	CoastWatch regions to which the data applies. The valid values are: FullRegionNE = Northeast KirkWatersRegion = Kirk Waters FullRegionSE = Southeast FullRegionNEEX = Northeast Extended FullRegionSEEX = Southeast Extended FullRegionGulfofMexico = Gulf of Mexico FullRegionGreatLakes = Great Lakes EasternTropicalPacific = Eastern Tropical Pacific FullRegionSitka = Sitka FullRegionHawaii = Hawaii FullRegionWestCoast = West Coast FullRegionSouthAlaska = South Alaska FullRegionWestAlaska = West Alaska FullRegionNorthAlaska = North Alaska FullRegionCaribbean = Caribbean
Station-Code	A four character code preceded by a 0, denoting the authorized receiving station of this data. The valid station-codes are: HBIO = Bedford Institute of Oceanography, Dartmouth, Nova Scotia, Canada HIGP = University of Hawaii, Honolulu HMBR = Moss Landing, California HNAV = NRL-SSC, MS (Stennis Space Center, Mississippi) HNSG = GSFC HRPT, NASA Greenbelt, MD HORB = ORBIMAGE (NASAGoddardSpaceFlightCenter) HROT = Rota, Spain HUAF = University of Alaska, Fairbanks HUSC = University of California, Santa Barbara HUSF = Saint Petersburg, Florida (University of South Florida) HUTX = University of Texas (Austin, Texas)
File-Format	Three character field denoting the format of the file. Valid values are: TIF = GeoTiff GIF = Graphics Interchange Format

5. SeaWIFS Level 2 Thumbnail Image: Image-TypeSourceYearDayStart-Time_Product-CodeMask_RegionStation-CodeAlgorithm-Code.File-Format with each qualifier defined below:

Qualifier	Details
Image-Type	A fixed one character field with the value of "T" denoting a thumbnail image.
Source	One character identifying the source of the file. Recognized characters are: S = NASA O = ORBIMAGE
Year	Full year with century, e.g., 2005, which identifies the year in which the spacecraft began recording the data set.
Day	Day of the year [001-366], which identifies the Julian day on which the spacecraft began recording the data set.
Start-Time	e.g. 135523, where "135523" denotes 13 hours 55 minutes 23 seconds UTC (to the nearest second) and represents the time at which spacecraft recording began.
Product-Code	A seven character code denoting the product name of the data. The valid product code values are: nLw_490 nLw_555 chlor_a k4_9000 Rrs_555
Mask	A fixed field of four characters with the value "mask" denoting that there is a mask applied.
Region	CoastWatch regions to which the data applies. The valid values are: FullRegionNE = Northeast KirkWatersRegion = Kirk Waters FullRegionSE = Southeast FullRegionNEEX = Northeast Extended FullRegionSEEX = Southeast Extended FullRegionGulfofMexico = Gulf of Mexico FullRegionGreatLakes = Great Lakes EasternTropicalPacific = Eastern Tropical Pacific FullRegionSitka = Sitka FullRegionHawaii = Hawaii FullRegionWestCoast = West Coast FullRegionSouthAlaska = South Alaska FullRegionWestAlaska = West Alaska FullRegionNorthAlaska = North Alaska FullRegionCaribbean = Caribbean
Station-Code	A four character code preceded by a 0, denoting the authorized receiving station of this data. The valid station-codes are: HBIO = Bedford Institute of Oceanography, Dartmouth, Nova Scotia, Canada HIGP = University of Hawaii, Honolulu HMBR = Moss Landing, California HNAV = NRL-SSC, MS (Stennis Space Center, Mississippi) HNSG = GSFC HRPT, NASA Greenbelt, MD (NASAGoddardSpaceFlightCenter) HORB = ORBIMAGE HUAF = University of Alaska, Fairbanks HUSF = Saint Petersburg, Florida (University of South Florida) HROT = Rota, Spain HUSC = University of California, Santa Barbara HUTX = University of Texas (Austin, Texas)
Algorithm-Code	Two or three character algorithm code used to create this file. Valid values are: OC4, RS, RC.
File-Format	Three character field denoting the format of the file. Valid values are: TIF = GeoTiff GIF = Graphics Interchange Format

6. SeaWIFS Level 2 Thumbnail Image: Image-TypeSourceYearDayStart-Time_Product-CodeMask_RegionStation-Code.File-Format with each qualifier defined below:

Qualifier	Details
Image-Type	A fixed one character field with the value of "T" denoting a thumbnail image.
Source	One character identifying the source of the file. Recognized characters are: S = NASA O = OrbImage
Year	Full year with century, e.g., 2005, which identifies the year in which the spacecraft began recording the data set.
Day	Day of the year [001-366], which identifies the Julian day on which the spacecraft began recording the data set.
Start-Time	e.g. 135523, where "135523" denotes 13 hours 55 minutes 23 seconds UTC (to the nearest second) and represents the time at which spacecraft recording began.
Product-Code	A seven character code denoting the product name of the data. The valid product code values are: nLw_490 nLw_555 chlor_a k4_9000 Rrs_555
Mask	A fixed field of four characters with the value "mask"denoting that there is land mask applied.
Region	CoastWatch regions to which the data applies. The valid values are: FullRegionNE = Full Region Northeast KirkWatersRegion = Kirk Waters FullRegionSE = Southeast FullRegionNEEX = Northeast Extended FullRegionSEEX = Southeast Extended FullRegionGulfofMexico = Gulf of Mexico FullRegionGreatLakes = Great Lakes EasternTropicalPacific = Eastern Tropical Pacific FullRegionSitka = Sitka FullRegionHawaii = Hawaii FullRegionWestCoast = West Coast FullRegionSouthAlaska = South Alaska FullRegionWestAlaska = West Alaska FullRegionNorthAlaska = North Alaska FullRegionCaribbean = Caribbean
Station-Code	A four character code preceded by a 0, denoting the authorized receiving station of this data. The valid station-codes are: HBIO = Bedford Institute of Oceanography, Dartmouth, Nova Scotia, Canada HIGP = University of Hawaii, Honolulu HMBR = Moss Landing, California HNAV = NRL-SSC, MS (Stennis Space Center, Mississippi) HNSG = GSFC HRPT, NASA Greenbelt, MD (NASAGoddardSpaceFlightCenter)HORB = ORBIMAGE HROT = Rota, Spain HUAF = University of Alaska, Fairbanks HUSC = University of California, Santa Barbara HUSF = Saint Petersburg, Florida (University of South Florida) HUTX = University of Texas (Austin, Texas)
File-Format	Three character field denoting the format of the file. Valid values are: TIF = GeoTiff GIF = Graphics Interchange Format

7. SeaWiFs Level 2 for CoastWatch Compresed Data: DataProduct.SYearDay.Start-Time.File-Format.Extension with each qualifier defined below:

Qualifier	Details
DataProduct	SWFCW
Year	Pre-Fixed with an S
Start-Time	e.g. 135523
File-Format	Three character field denoting the format of the file. The valid value is HDF.
Extension	A fixed filed of one character with the value "Z" denoting the compressed format of the file.

8. MERIS Level 2 Compressed Data: DataProduct.MYearDay.Start-Time.File-Format.Extension with each qualifier defined below:

Qualifier	Details
DataProduct	MERCW
Year	Pre-fixed with an M
Day	Day of the year [001-366]
Start-Time	e.g. 135523
File-Format	Three character field denoting the format of the file. The valid value is HDF
Extension	A fixed field of one character withthe value of "Z" denoting the compressed format of the file.

9. MODIS Aqua Level 2 Compressed Data: DataProduct.<A or P>YearDay.Start-Time.File-Format.Extension with each qualifier defined below:

Qualifier	Details
DataProduct	MODSCW
Year	Pre-fixed with an A or P
Day	Day of the Year [001-366]
Start-Time	e.g. 1355
File-Format	Three character field denoting the format of the file. The valid value is HDF
Extension	A fixed field of one character witht he value "Z" denoting the compressed format of the file.

10. MODIS Aqua SWIR Level 2 Compressed Data: DataProduct.<A orP>YearDay.Start-Time.File-Format.Extension with each qualifier defined below:

Qualifier	Details
DataProduct	MODWCW
Year	Pre-fixed with an A or P
Day	Day of the Year [001-366]
Start-Time	e.g. 1355
File-Format	Three character field denoting the format of the file. The valid value is HDF
Extension	A fixed field of one character witht he value "Z" denoting the compressed format of the file.

11. MODIS Terra Level 2 Compressed Data: DataProduct.<A orP>YearrDay.Start-Time.File-Format.Extension with each qualifier defined below:

Qualifier	Details
DataProduct	MODTCW
Year	Pre-fixed with an A or P
Day	Day of the Year [001-366]
Start-Time	e.g. 1355
File-Format	Three character field denoting the format of the file. The valid value is HDF
Extension	A fixed field of one character witht he value "Z" denoting the compressed format of the file.

Back to the top

Dataset Size (Bytes)

The size of the file to be delivered to the user in bytes.

Back to the top

Datatype

The data types available for Ocean Color are:

SeaWifs Level 1A Data	SW_L1_DATA	SeaWIFS Level 1A HDF
SeaWifs Level 2 Data	SW_L2_DATA	SeaWIFS Level 2 HDF
SeaWifs Level 2 GIF Image	SW_L2_GIF	SeaWIFS Level 2 GIF Image (full)
SeaWifs Level 2 GIF Thumbnail Image	SW_L2_GIFT	SeaWIFS Level 2 GIF Image (thumbnail)
SeaWifs Level 2 TIF Image	SW_L2_TIF	SeaWIFS Level 2 TIF Image (full)
SeaWifs Level 2 TIF Thumbnail Image	SW_L2_TIFT	SeaWIFS Level 2 TIF Image (thumbnail)
SeaWiFS Level 2 for CoastWatch Compressed Data	SW_L2Z	SeaWiFS Level 2 for CoastWatch HDF (compressed)
MERIS Level 2 Compressed Data	MER_L2	MERIS Level 2 Data (compressed)
MODIS Aqua Level 2 Compressed Data	MODA_L2	MODIS Aqua Level 2 Data (compressed)
MODIS Aqua SWIR Level 2 Compressed Data	MODA_L2_SI	MODIS Aqua SWIR Level 2 Data (compressed)
MODIS Terra Level 2 Compressed Data	MODT_L2	MODIS Terra Level 2 Data (compressed)

Back to the top

Inventory ID

A unique numerical ID assigned to the data set for CLASS inventory purposes.

Back to the top

Mask

Indicates if the a mask has been applied or not. In case of a masked file, the value is "Y", otherwise it is blank.

Back to the top

Origin

The sources for Ocean Color data are:

NASA Ocean Color file	Obtained from NASA
OrbImage Ocean Color file	Purchased from ORBIMAGE

Back to the top

Product Code

The valid product codes for Ocean Color data are:

nLw_490	NLW490
chlor_a	CHLORA
nLw_555	NLW555
k4_9000	K49000
Rrs_555	RRS555

Back to the top

Region

Identifies regions that OceanColor data is mapped to. Valid regions are:

Full Region Great Lakes	Full Region Great Lakes
Full RegionNE	Full Region Northeast
Kirk Waters Region	Kirk Waters Region
Full Region SE	Full Region Southeast
Full Region West Coast	Full Region West Coast
FullRegionGulf of Mexico	FullRegionGulf of Mexico
Full Region SEEX	Full Region Southeast Extended
Full Region NEEX	Full Region Northeast Extended
Full Region West Alaska	Full Region West Alaska
Eastern Tropical Pacific	Eastern Tropical Pacific
Full Region South Alaska	Full Region South Alaska
Full Region North Alaska	Full Region North Alaska
Full Region Caribbean	Full Region Caribbean
Full Region Hawaii	Full Region Hawaii
Full Region Sitka	Full Region Sitka

Back to the top

Station

The authorized HRPT receiving stations for Ocean Color data are:

HBIO = Bedford Institute of Oceanography, Dartmouth, Nova Scotia, Canada
HIGP = University of Hawaii, Honolulu
HMBR = Moss Landing, California
HNAV = NRL-SSC, MS (Stennis Space Center, Mississippi)
HNSG = GSFC HRPT, NASA Greenbelt, MD (NASAGoddardSpaceFlightCenter)
HORB = ORBIMAGE
HOSA = SeaSpace, San Diego, CA
HROT = Rota, Spain
HUSF = Saint Petersburg, Florida (University of South Florida)
HUAF = University of Alaska, Fairbanks
HUSC = University of California, Santa Barbara
HUTX = University of Texas (Austin, Texas)
ODUL = ORBIMAGE (GeoEye), Dulles, VA

Back to the top

Temporal

Refers to the time span of interest to the user. This section of the search page allows the user to define the range of dates/times of interest.

Back to the top

Time

The UCT date corresponding to the beginning of the coverage of the given dataset. Format is yyyy-mm-dd hh:mm:ss.fff where fff is the fraction of a second in milliseconds.

Back to the top

UCT

Coordinated Universal Time (UTC) is the international time standard. It is the current term for what was referred to as Greenwich Meridian Time (GMT). Zero (0) hours UTC is midnight in Greenwich England, which lies on the zero longitudinal meridian. Universal time is based on a 24 hour clock, therefore, afternoon hours such as 4 pm UTC are expressed as 16:00 UTC (sixteen hours, zero minutes).

Back to the top