GHRSST Level 2P Regional Bulk Sea Surface Temperature from the Advanced Very High Resolution Radiometer (AVHRR) on the NOAA-18 satellite produced by NAVO
Entry ID: NAVO-L2P-AVHRR18_L

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Summary
Abstract: A regional Group for High Resolution Sea Surface Temperature (GHRSST) Level 2P dataset based on multi-channel sea surface temperature (SST) retrievals generated in real-time from the Advanced Very High Resolution Radiometer (AVHRR) on the NOAA-18 platform (launched 20 May 2005) produced and used operationally in oceanographic analyses and forecasts by the US Naval Oceanographic Office (NAVO). The AVHRR is a space-borne scanning sensor on the National Oceanic and Atmospheric Administration (NOAA) family of Polar Orbiting Environmental Satellites (POES) having a operational legacy that traces back to the Television Infrared Observation Satellite-N (TIROS-N) launched in 1978. AVHRR instruments measure the radiance of the Earth in 5 (or 6) relatively wide spectral bands. The first two are centered around the red (0.6 micrometer) and near-infrared (0.9 micrometer) regions, the third one is located around 3.5 micrometer, and the last two sample the emitted thermal radiation, around 11 and 12 micrometers, respectively. The legacy 5 band instrument is known as AVHRR/2 while the more recent version, the AVHRR/3 (first carried on the NOAA-15 platform), acquires data in a 6th channel located at 1.6 micrometer. Typically the 11 and 12 micron channels are used to derive SST sometimes in combination with the 3.5 micron channel. The NOAA platforms are sun synchronous generally viewing the same earth location twice a day (latitude dependent) due to the relatively large AVHRR swath of approximately 2400 km. The highest ground resolution that can be obtained from the current AVHRR instruments is 1.1 km at nadir. AVHRR data are acquired in three formats: High Resolution Picture Transmission (HRPT), Local Area Coverage (LAC), and Global Area Coverage (GAC). HRPT data are full resolution image data transmitted to a ground stations as they are collected. LAC are also full resolution data, but the acquisition is prescheduled and recorded with an on-board tape recorder for subsequent transmission during a station overpass. GAC data provide daily subsampled global coverage recorded on tape recorders and then transmitted to a ground station. This particular dataset is derived from LAC data. Further binning and averaging of the 1.1 km LAC pixels results in a final dataset resolution of 2.2 km. The coverage of the LAC data can vary but generally contains scenes over the oceans adjacent to Australia and the North Indian Ocean.

Related URL
Link: GET DATA > THREDDS DIRECTORY
Description: Data may be directly downloaded from the NODC via the THREDDS (Thematic Real-time Environmental Distributed Data Services) server at the URL listed in this metadata record. For more information see the NODC GHRSST project web site: URL: http://ghrsst.nodc.noaa.gov/


Link: GET DATA > OPENDAP DIRECTORY (DODS)
Description: These data are also served using OPeNDAP (formerly DODS) server. The base URL is: http://data.nodc.noaa.gov/opendap/ghrsst/. For more information see the NODC GHRSST project web site: URL:http://ghrsst.nodc.noaa.gov/. For a listing of OPeNDAP clients which may be used to access OPeNDAP-enabled data sets, please see the OPeNDAP web site at URL: http://opendap.org/


Link: GET DATA
Description: Direct FTP access: Navigate to ftp://ftp.nodc.noaa.gov/pub/data.nodc/ghrsst using any FTP client to begin downloading data. For more information see the NODC GHRSST project web site: URL: http://ghrsst.nodc.noaa.gov/


Link: GET DATA
Description: Simple Web access: Using any web browser, navigate to URL: http://data.nodc.noaa.gov/ghrsst and begin browsing through the file hierarchy. Clicking on any of the files will prompt you to download that file or will launch any application associated with netCDF files. For more information see the NODC GHRSST project web site: URL: http://ghrsst.nodc.noaa.gov/


Link: GET DATA
Description: Data may be directly downloaded through the NODC Ocean Archive System at: URL: http://www.nodc.noaa.gov/Archive/Search/. NODC can be contacted directly for custom orders. (When requesting data from the NODC, a data set may be referred to by a 7-digit accession number assigned to individual data sets, see the NODC Ocean Archive System at http://www.nodc.noaa.gov/Archive/Search/.) For more information see the NODC GHRSST project web site: URL: http://ghrsst.nodc.noaa.gov/


Link: VIEW RELATED INFORMATION
Description: AVHRR LAC_HRPT MCSST (NAVOCEANO) Multi-channel sea surface temperature data sets


Geographic Coverage
 N: 80.0 S: -70.0  E: 180.0  W: -180.0

Data Set Citation
Dataset Originator/Creator: Naval Oceanographic Office
Dataset Title: N-18 AVHRR LAC L2P swath SST data set
Dataset Series Name: N-18 AVHRR LAC MCSST
Dataset Release Date: 2005-12-24
Dataset Release Place: Stennis Space Center, MS, USA
Dataset Publisher: Naval Oceanographic Office
Version: 1.0
Other Citation Details: Production of L2P data is sponsored partly by the NOPP
Online Resource: none


Temporal Coverage
Start Date: 2006-01-25
Stop Date: 2009-09-09


Location Keywords
GEOGRAPHIC REGION > GLOBAL


Data Resolution
Temporal Resolution: Revisit determined by recorder scheduling


Science Keywords
OCEANS >OCEAN TEMPERATURE >SEA SURFACE TEMPERATURE >BULK SEA SURFACE TEMPERATURE    [Definition]


ISO Topic Category
OCEANS
GEOSCIENTIFIC INFORMATION


Platform
NOAA-18 >National Oceanic & Atmospheric Administration-18    [Information]


Instrument
AVHRR-3 >Advanced Very High Resolution Radiometer-3    [Information]


Project
GHRSST >Group for High Resolution Sea Surface Temperature    [Information]
CWIC >CEOS WGISS Integrated Catalog    [Information]


Access Constraints
None


Use Constraints
None


Keywords
SEA SURFACE TEMPERATURE
AVHRR > Advanced Very High Resolution Radiometer
AVHRR-LAC
satellite data
NOAA-18 SATELLITE
Group for High Resolution Sea Surface Temperature
US NAVY; NAVAL OCEANOGRAPHIC OFFICE
US NATIONAL AERONAUTIC AND SPACE ADMINISTRATION; JET PROPULSION LABORATORY Physical

Oceanography Distributed Active Archive Center
Earth Science
Oceans
Ocean Temperature
Sea Surface Temperature
climatologyMeteorologyAtmosphere
oceans
environment
biota
World-Wide Distribution
Global Ocean
Global


Originating Center
Naval Oceanographic Office


Data Center
National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce    [Information]
Data Center URL: http://www.nodc.noaa.gov/

Data Center Personnel
Name: NODC CUSTOMER SERVICE
Phone: 1 301 7133277
Fax: 1 301 7133302
Email: NODC.Services at noaa.gov


Oceanography Division, Naval Research Laboratory, U.S. Navy, U. S. Department of Defense    [Information]
Data Center URL: http://www7300.nrlssc.navy.mil/
Dataset ID: AVHRR18_L

Data Center Personnel
Name: DOUG MAY
Phone: 228-688-4859
Fax: 228-688-5577
Email: doug.may at navy.mil


Personnel
KENNETH S. CASEY
Role: TECHNICAL CONTACT
Phone: (301) 713-3272 x133
Fax: FAX: (301) 713-3300
Email: Kenneth.Casey at noaa.gov
Contact Address:
NOAA National Oceanographic Data Center SSMC3, 4th Floor, Room 4853, Route: E/OC1 1315 East-West Highway
City: Silver Spring
Province or State: Maryland
Postal Code: 20910
Country: U.S.A.


DOUG MAY
Role: TECHNICAL CONTACT
Phone: 228-688-4859
Fax: 228-688-5577
Email: doug.may at navy.mil



Creation and Review Dates
DIF Creation Date: 2012-11-01
Last DIF Revision Date: 2013-03-18

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