gov.noaa.nodc:0004592
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gov.noaa.nodc:GHRSST-EUR-L2P-AVHRR16_G
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2023-06-25T13:03:43Z
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
MCSST Orbital GAC MCSST Level 2 (NAVOCEANO) orbital 9km for 100W - 45E and 90N - 70S, from NOAA-16 AVHRR/2 over the EU-RDAC area (Medspiration) for 2005-07-19 (NCEI Accession 0004592)
2006-09-16
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NOAA National Centers for Environmental Information
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0004592
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Edward M. Armstrong
US NASA; Jet Propulsion Laboratory (JPL)
edward.m.armstrong@jpl.nasa.gov
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US NASA; Jet Propulsion Laboratory; Physical Oceanography Distributed Active Archive Center (PO.DAAC)
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Medspiration
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Armstrong, Edward M.
US NASA; Jet Propulsion Laboratory (JPL)
edward.m.armstrong@jpl.nasa.gov
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High quality Sea Surface Temperatures (SSTs) maps derived from the NOAA (National Oceanic and Atmospheric Administration)-Polar Orbiting Advanced Very High Resolution Radiometer (AVHRR) have been available since 1981. The multichannel sea surface temperature algorithm (MCSST) has been used to routinely calculate SSTs using a split window approach. Currently this algorithm is applied by the Naval Oceanographic Office (NAVOCEANO) to calculate SSTs at a near real-time rate. The multichannel sea surface temperature algorithm uses a set of linear coefficients to retrieve sea surface temperature from the brightness radiances. Improved cloud retrieval algorithms applied by NAVOCEANO have significantly increased the number of SST pixels flagged as cloud free, as compared to previous MCSST data sets. The NAVOCEANO MCSST data sets provide a high quality near real time sea surface temperature dataset with a high number of cloud free retrievals. Additionally the orbital temporal and 9km spatial resolutions allow this data to be used in a quasi real time mode for detection of mesoscale features such as eddies associated with major current systems. The history of SST computation from AVHRR radiances is discussed at length by [McClain et al., 1985]. Briefly, radiative transfer theory is used to correct for the effects of the atmosphere on the observations by utilizing 'windows' of the electromagnetic spectrum where little or no atmospheric absorption occurs. Channel radiances are transformed (through the use of the Planck function) to units of temperature, then compared to a-priori temperatures measured at the surface. This comparison yields coefficients which, when applied to the global AVHRR data, give estimates of surface temperature which have been nominally accurate to 0.7 degrees Celsius. Each AVHRR scan views Earth for 51.282 milliseconds, during which time each channel of the analog data output is digitized. Scans occur at the rate of 6 per second, and the sampling rate of the AVHRR sensors is 39,936 samples per second per channel. During a scan, the detectors view an internal target, cold space, and the external scene. The temperature of the internal target is monitored, and space is assumed to have a black- body temperature of 3K. In this way, a simple two-point linear calibration is done internally (Schwalb, 1978). The nonlinear modification to this calibration is achieved at the time of postprocessing, and takes into account sensor nonlinearities, measurement of internal target temperature, calculation of target radiance, internal reflections and emissions, etc. Sensor/Instrument Measurement Geometry: The AVHRR has a cross-track scanning system which use an elliptical beryllium mirror rotating at 360 RPM about an axis parallel to the Earth. The 110.8 degree cross-track scan equates to a swath width of about 2700 km. This swath width is greater than the 25.3 degree separation between successive orbital tracks, and provides overlapping coverage. Coverage is global, twice daily, at an instantaneous field of view (IFOV) of ~1.4 milliradians, giving a ground field of view of ~1.1 km at nadir for a nominal altitude of 833 km. Full resolution AVHRR data are continuously transmitted and recorded in High Resolution Picture Transmission (HRPT) format. The Global Area Coverage (GAC) data are subsampled to approximately 4 km IFOV, recorded internally, and downlinked daily. The MCSST coefficients are then applied to the infrared brightness radiances to convert to SST. A level 2 declouded product produced by the Naval Oceanographic Office (NAVOCEANO) is then downloaded to JPL for distribution. The level-2 product is available in orbital files with a spatial resolution of approximately 9 kilometers. There are approximately 28 files per day for the NOAA-14 and NOAA-16 data. The spatial coverage is not uniform because of cloud coverage, which prevents the AVHRR instrument from seeing the ocean. Data Organization: Granularity: (http://harp.gsfc.nasa.gov:1729/eosdis_documents/glossary.of.terms.html.
This dataset is available to the public for a wide variety of uses including scientific research and analysis.
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0004592
NCEI ACCESSION NUMBER
2006-09-16
publication
SEA SURFACE TEMPERATURE
theme
NODC DATA TYPES THESAURUS
AVHRR-3
instrument
NODC INSTRUMENT TYPES THESAURUS
satellite data
theme
NODC OBSERVATION TYPES THESAURUS
NOAA-16
platform
NODC PLATFORM NAMES THESAURUS
Medspiration
dataCentre
NODC COLLECTING INSTITUTION NAMES THESAURUS
US NASA; Jet Propulsion Laboratory; Physical Oceanography Distributed Active Archive Center
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NODC SUBMITTING INSTITUTION NAMES THESAURUS
Group for High Resolution Sea Surface Temperature (GHRSST)
project
NODC PROJECT NAMES THESAURUS
World-Wide Distribution
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NODC SEA AREA NAMES THESAURUS
oceanography
theme
WMO_CategoryCode
2012-09-15
publication
DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce
NASA/JPL/PODAAC > Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, NASA
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GHRSST > Group for High Resolution Sea Surface Temperature
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EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE
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AVHRR-3 > Advanced Very High Resolution Radiometer-3
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NOAA-16 > National Oceanic & Atmospheric Administration-16
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NOAA-16 (ICES code: 33J9)
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Cite as: Armstrong, Edward M.; NASA JPL PO.DAAC (2006). MCSST Orbital GAC MCSST Level 2 (NAVOCEANO) orbital 9km for 100W - 45E and 90N - 70S, from NOAA-16 AVHRR/2 over the EU-RDAC area (Medspiration) for 2005-07-19 (NCEI Accession 0004592). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0004592. Accessed [date].
Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
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Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
GHRSST Level 2P Global Bulk Sea Surface Temperature from the Advanced Very High Resolution Radiometer (AVHRR) on the NOAA-16 satellite (GDS version 1)
2006-09-13
publication
NOAA National Centers for Environmental Information
gov.noaa.nodc:GHRSST-EUR-L2P-AVHRR16_G
https://www.ncei.noaa.gov/archive/accession/GHRSST-EUR-L2P-AVHRR16_G
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NOAA National Centers for Environmental Information
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eng; USA
utf8
environment
oceans
-100
45
-65.08
79.96
2005-07-19
2005-07-19
Entry ID: EUR-L2P-AVHRR16_G
Projection_Information:
Projection Type: Satellite native swath along-track
Ellipsoid_Type:
Other Projection Details: Satellite swath data with latitude and longitude for each pixel measurement
Data Resolution:
Latitude resolution: 9.0
Longitude resolution: 9.0
The temporal resolution: 6 hours The AVHRR has a cross-track scanning system which use an elliptical beryllium mirror rotating at 360 RPM about an axis parallel to the Earth. The 110.8 degree cross-track scan equates to a swath width of about 2700 km. This swath width is greater than the 25.3 degree separation between successive orbital tracks, and provides overlapping coverage. Coverage is global, twice daily, at an instantaneous field of view (IFOV) of ~1.4 milliradians, giving a ground field of view of ~1.1 km at nadir for a nominal altitude of 833 km.
This metadata record was generated from an original data set description (DSD) record in .DIF format: http://www.ghrsst-pp.org
Reference: Medspiration products user manual, Robinson I., Leborgne P., Piolle J.F., Larnicol G., v1.02, September 2004
Sources:
NOAA-16
National Oceanic and Atmospheric Administration Environmental Satellite 16
Sensors:
AVHRR/2
Advanced Very High Resolution Radiometer version 3
NOAA National Centers for Environmental Information
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1.036
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These data are available through a variety of services via a THREDDS (Thematic Real-time Environmental Distributed Data Services) Data Server (TDS). Depending on the dataset, the TDS can provide WMS, WCS, DAP, HTTP, and other data access and metadata services as well. For more information on the TDS, see http://www.unidata.ucar.edu/software/thredds/current/tds/.
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NCEI Accession 0004592 v1.1 was published.
2006-09-16T06:59:22Z
NCEI Accession 0004592 v1.1
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NCEI Accession 0004592 v1.1
published 2006-09-16T06:59:22Z
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NOAA National Centers for Environmental Information
NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
2015-04-22T00:00:00
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AVHRR-3
AVHRR-3
Advanced Very High Resolution Radiometer-3
The AVHRR-3 is a six channel scanning radiometer providing 3 solar channels in the visible-near infrared region and 3 thermal infrared channels. The AVHRR-3 has two one-micrometer wide channels between 10.3 and 12.5 micrometers. This latest version of AVHRR was first carried on NOAA-15 launched in May 1998 and subsequently in all current NOAA and MetOp platforms. Measuring the same view, this array of diverse wavelengths, after processing, permits multi spectral analysis for more precisely defining hydrologic, oceanographic, and meteorological parameters. Comparison of data from two channels is often used to observe features or measure various environmental parameters. The three channels operating entirely within the infrared band are used to detect the heat radiation from and hence, the temperature of land, water, sea surfaces, and the clouds above them.
Additional Information:
http://www.ncdc.noaa.gov/oa/pod-guide/ncdc/docs/klm/html/c3/sec3-1.htm
NOAA-16
Updated information from ICES for the platform NOAA-16 from United States.
Name NOAA-16
Country(s) US: UNITED STATES
Platform Class 65: Orbiting satellite
Native Name
Synonyms
Call Sign
MMSI
IMO
Pennant
Title
Commissioned Date 2000
Decommissioned Date 2014
Notes
Polar-orbiting environmental satellite launched September 2000. The NODC has archived AVHRR SST data collected from this platform as part of the Pathfinder project.
Instruments: AVHRR/3 et al
Information Source (URL)
https://www.wmo-sat.info/oscar/satellites/view/338
Confirmed by NOAA on 2018-07-17.