Sea-Viewing Wide Field-of-View Sensor Level 1A DataEntry ID: gov.noaa.class.SW_L1A
Abstract: ABSTRACT: This data set consists of satellite measurements of global and regional ocean color data obtained by the Sea-viewing Wide Field-of-view Sensor (SeaWIFS), in orbit on the OrbView-2 (formerly SeaStar) platform. The concentration and predominant identity of substances and particles in the euphotic (lighted) zone of the upper ocean influences the apparent color of the ocean, which can range ... from deep blue to varying shades of green and ruddy brown. Living phytoplankton (which contain chlorophyll and associated photosynthetic pigments), inorganic sediments, detritus (particulate organic matter) and dissolved organic matter all contribute to the color of the ocean. SeaWiFS acquires approximately 15 pole-to-pole orbital swaths of data per day, and approximately 90% of the ocean surface is scanned every two days. The file's content consists of raw radiance counts from eight bands (six in visible and two in near infrared spectrum), calibration data, navigation data, instrument telemetry and selected spacecraft telemetry. While level 2 historic data is open to the public, level 1 data is restricted to users covered by SeaWIFS CoastWatch contract due to limitations associated with commercial data. Users may find instructions on how to become registered users with SeaWIFS at http://coastwatch.noaa.gov/cw_faq.html#ocean%20color.
CURRENTNESS REFERENCE: upon processing
SPATIAL DATA ORGANIZATION INFORMATION
Direct Spatial Reference: Raster
Raster Object Type: Swath
Fees: Free for users covered by CoastWatch contract for online access. For delivery on physical media, users are responsible for the cost of the physical media and production and delivery of the product.
Purpose: PURPOSE: The purpose of SeaWiFS data is to examine oceanic factors that affect global change and to assess the oceans' role in the global carbon cycle, as well as other biogeochemical cycles, through a comprehensive research program. SeaWiFS data are being used to help clarify the magnitude and variability of chlorophyll and primary production by marine phytoplankton and to determine the distribution and timing of spring blooms, i.e., the time of highly abundant growth.
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Data Set Citation
Dataset Originator/Creator: NASA/GSFC/EOS > Earth Observing System, Goddard Space Flight Center, NASAGeoEye (formerly ORBIMAGE, Inc)
Dataset Title: Sea-Viewing Wide Field-of-View Sensor Level 1A Data
Dataset Release Date: 1997-09-01Online Resource: http://www.class.noaa.gov/nsaa/products/search?sub_id=0&datatype_fa...
Start Date: 1997-09-04
OCEANS > OCEAN OPTICS > ABSORPTION
OCEANS > OCEAN OPTICS > OCEAN COLOR
SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > INFRARED RADIANCE
SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > SENSOR COUNTS
SPECTRAL/ENGINEERING > VISIBLE WAVELENGTHS > SENSOR COUNTS
SPECTRAL/ENGINEERING > VISIBLE WAVELENGTHS > VISIBLE RADIANCE
ISO Topic Category
Access Constraints none
Use Constraints none
Data Set Progress
Distribution Media: FTP
Distribution Format: ASCII
Role: DIF AUTHOR
Email: ghrcdaac at itsc.uah.edu
320 Sparkman Dr.
Province or State: AL
Postal Code: 35805
Role: TECHNICAL CONTACT
Email: john.mcgrath at mail.dfrc.nasa.gov
NASA Dryden Flight Research Center P.O. BOX 273
Province or State: CA
Postal Code: 93523-0273
Extended Metadata Properties
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Creation and Review Dates
Last DIF Revision Date: 2012-05-01