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OSTM/Jason-2: Orbital Information

Entry ID: gov.noaa.class.J2-ORBINFO

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Summary

Abstract: ABSTRACT: OSTM/JASON-2 is a follow-on mission continuing the TOPEX/Poseidon and Jason-1, and is designed to ensure continuity of high quality measurements for ocean science and to provide operational products for assimilation and forecasting applications. The Jason-2 satellite was launched on 20 June 2008 and reached its nominal repetitive orbit on 4 July 2008. The component data types in this ... data family are GPSP1, TLE, MOE, and POE. GPSP1: Intermediate Level-1 data files are in "RINEX" format, from the Global Positioning System receiver. These are used to compute precise GPS orbits for the spacecraft. TLE: Two Line Element Files used to determine the position and velocity of the satellite. Within CLASS, they will be used directly to determine each orbit's equator crossing longitude and time which subsequently are used to support spatial search. MOE and POE: Medium-precision and Precision Orbital Ephemeris files from the DORIS system are produced by CNES for offline (IGDR, GDR) data production. These data are archived at the National Oceanographic Data Center (NODC) as accession 0044985 (http://www.nodc.noaa.gov/cgi-bin/search/prod/accessionsView.pl/deta...) and distributed through the NOAA/NESDIS Comprehensive Large Array-data Stewardship System (CLASS, http://www.class.noaa.gov).

SUPPLEMENTAL INFORMATION: Satellite altimetry data applications include validation and assimilation into global wave models, high seas hazards monitoring, sea surface height and ocean currents (hurricane intensity forecasts and assimilation into operational ocean models, multi-mission altimetry, fisheries, and marine transport. For this data family, there are inherent dependencies between the manifest file and the data files identified within it. MOE and POE files, are related to OSTM/Jason-2: Level-2 Geophysical Data Records family files through a cross-reference listed as netCDF attributes within the OSTM/Jason-2: Level-2 Geophysical Data Records family files (NODC Accession Number 0043269) and in the XML-formatted metadata file that accompanies those files. There is no cross-reference relationship between either the GPSP1 or the TLE files and the OSTM/Jason-2: Level-2 Geophysical Data Records family files.

CURRENTNESS REFERENCE: ground condition

SPATIAL DATA ORGANIZATION INFORMATION
Indirect Spatial Reference: Jason-2's orbit is identical to that of Jason-1 (and that of Topex/Poseidon previously). It is optimized to study large-scale ocean variability and to provide coverage of 90% of the world's oceans over a ten-day cycle. Jason-2's high altitude (1,336 kilometres) reduces interactions with the Earth's atmosphere and gravity field to a minimum, thus making orbit determination easier and more precise. The orbit inclination of 66 degrees North and South enables the satellite to cover most of the globe's unfrozen oceans. The orbit's repeat cycle is just under 10 days (9.9156 days to be precise, i.e., 10 days minus two hours) - in other words, the satellite passes over the same point on the Earth's surface (to within one kilometre) every ten days. This cycle is a trade-off between spatial and temporal resolution designed for the study of large-scale ocean variability. The fact that the orbit is prograde and not sun-synchronous also avoids aliasing of different tidal components at the same frequency. The orbit is also designed to pass over two dedicated ground calibration sites: Cap Senetosa in Corsica and the Harvest oil rig platform in California, USA.
Direct Spatial Reference: Point
SDTS Point and Vector Object Type: Point

NATIVE: For Global Positioning System space Payload level 1 data (GPSP1): Intermediate Level-1 data files in RINEX (Receiver Independent Exchange) format, from the Global Positioning System receiver. Used to compute precise GPS orbits for the spacecraft. For TLE: Two Line Element Files used to determine the position and velocity of the satellite. For MOE and POE: Medium-precision and Precision Orbital Ephemeris files from the DORIS system. Produced by CNES for offline (IGDR, GDR) data production.

Electronic download (FTP) of the data is free. There is a fee for copies of data on physical media. Optical disks are $25.00 per unit and magnetic tape is $100 per unit. Price does not include additional service and handling costs.

Purpose: PURPOSE: This collection contains data information files needed for precise orbit determination of the Jason-2 satellite.

Related URL

Link: GET DATA > NOAA CLASS

Description: Download options for OSTM/Jason-2 orbital information archived and distributed at CLASS.

Geographic Coverage

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Spatial coordinates

N: 66.0

S: -66.0

E: 180.0

W: -180.0

Data Set Citation

Dataset Originator/Creator: DOC/NOAA/NESDIS/OSDPD > Office of Satellite Data Processing and Distribution, NESDIS, NOAA, U.S. Department of CommerceEUMETSAT > European Meteorological Satellite Organisation

Dataset Title: OSTM/Jason-2: Orbital Information

Dataset Release Date: 2008-12-15

Dataset Release Place: Suitland, MD

Dataset Publisher: NOAA NESDIS Office of Satellite Data Processing and Distribution (OSDPD)

Data Presentation Form: digital data files

Online Resource: http://www.osdpd.noaa.gov

Temporal Coverage

Start Date: 2008-07-01

Location Keywords

GEOGRAPHIC REGION > GLOBAL OCEAN

Science Keywords

OCEANS > COASTAL PROCESSES > SEA SURFACE HEIGHT

OCEANS > OCEAN WAVES > SIGNIFICANT WAVE HEIGHT

ISO Topic Category

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

ELEVATION

OCEANS

Platform

OSTM/JASON-2

Instrument

DORIS > Doppler Orbitography and Radiopositioning Integrated by Satellite

GPSP > Global Positioning System Payload

Project

ESIP > Earth Science Information Partners Program

Quality ATTRIBUTE ACCURACY REPORT: Three location systems combine to measure the satellite's (Jason-2) precise position in orbit to within one centimetre on the radial component: 1. Doppler Orbitography and Radio-positioning Integrated by Satellite (DORIS) DORIS, supplied by CNES, uses a ground network of 60 orbitography beacons around the globe, which send signals in two frequencies to a receiver on the ...

Access Constraints ACCESS CONSTRAINTS: None

DISTRIBUTION LIABILITY: While NESDIS makes every effort to ensure that its databases are error-free, errors do occur. We ask that you notify us immediately of any errors that you discover in our data. We will make every effort to correct them. With respect to documents available from this server, neither the United States Government nor any of its employees, ...

Use Constraints None

Ancillary Keywords

orbit

two line elements

Data Set Progress

IN WORK

Data Center

Comprehensive Large Array-data Stewardship System, NOAA, U.S. Department of Commerce

Data Center URL: http://www.class.noaa.gov/
Dataset ID: Jason-2_Orbital

Data Center Personnel
Name: NOAA'S CLASS HELP DESK Email: info at class.noaa.gov Contact Address: 151 Patton Avenue City: Asheville Province or State: NC Postal Code: 28801-5001 Country: USA

Distribution

Distribution Media: Online Internet (HTTP)

Distribution Size: 0.306 MB

Distribution Format: XLS

Fees: 0

Personnel

SEDAC USER SERVICES

Role: TECHNICAL CONTACT

Phone: +1 845-365-8920

Fax: +1 845-365-8922

Email: ciesin.info at ciesin.columbia.edu

Contact Address:

61 Route 9W, P.O. Box 1000

City: Palisades

Province or State: NY

Postal Code: 10964

Country: USA

CIESIN METADATA ADMINISTRATION

Role: DIF AUTHOR

Phone: +1 845-365-8988

Fax: +1 845-365-8922

Email: metadata at ciesin.columbia.edu

Contact Address:

61 Route 9W, P.O. Box 1000

City: Palisades

Province or State: New York

Postal Code: 10964

Country: USA

Publications/References

Center for International Earth Science Information Network (CIESIN)/Columbia University (2007), National Aggregates of Geospatial Data Collection: Population, Landscape, And Climate Estimates, Version 2 (PLACE II), NASA Socioeconomic Data and Applications Center (SEDAC), Palisades, NY, http://sedac.ciesin.columbia.edu/data/set/nagdc-population-landscap...

Center for International Earth Science Information Network (CIESIN)/Columbia University (2012), National Aggregates of Geospatial Data Collection: Population, Landscape, And Climate Estimates, Version 3 (PLACE III), NASA Socioeconomic Data and Applications Center (SEDAC), Palisades, NY, http://sedac.ciesin.columbia.edu/data/set/nagdc-population-landscap...

Extended Metadata Properties

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Creation and Review Dates

DIF Creation Date: 2002-08-28

Last DIF Revision Date: 2012-09-28

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