TOPEX/Poseidon L2 Ocean Surface Topography Merged Geophysical Data Record Crossover ver B

TOPEX/Poseidon L2 Ocean Surface Topography Merged Geophysical Data Record Crossover ver B
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DOI10.5067/TPMGD-XOVRB
Short NameTOPEX_L2_OST_MGDR_CROSSOVER
DescriptionThis dataset contains the crossover points from TOPEX(ocean TOPography EXperiment)/Poseidon Merged Geophysical Data Record version B (MGDR-B). The MGDR-B combines measurements from two altimeters, TOPEX, a NASA dual frequency (Ku and C band) instrument, and a French (CNES) instrument which is a proof-of-concept solid-state altimeter, Poseidon (Ku band). The parameters are slightly different than the regular pass data in the MGDR-B, but does contain significant wave height, sigma-0, wet troposphere, ionospheric correction, tides and the parameters required to calculate Sea Surface Height Anomaly (SSHA). For more information on the parameters please visit PO.DAAC Drive at https://podaac-tools.jpl.nasa.gov/drive/files/allData/topex/L2/mgdrb/docs/uhmgdrb/html/uhsec08.htm.
VersionB
Dataset TypeOPEN
MeasurementOceans > Sea Surface Topography > Sea Surface Height
Oceans > Ocean Waves > Significant Wave Height
Processing Level2
CoverageRegion: Global
Northernmost Latitude: 66 degrees
Southernmost Latitude: -66 degrees
Westernmost Longitude: 0 degrees
Easternmost Longitude: 360 degrees
Time Span: 1996-Apr-24 to 1998-Jun-26
ResolutionSpatial Resolution: 11.2 km (Along) x 5.1 km (Across)
ProjectionType: Swath
Detail: N/A
Ellipsoid:
Latency hours
Swath Width5 km
Sample Frequency1
Temporal Repeat (Nominal)10 Day
Temporal Repeat (Min)3 Day
Temporal Repeat (Max)5 Day
Platform/Sensor
TOPEX/POSEIDON
Platform
Name: Topography Experiment/Poseidon (TOPEX/POSEIDON)
Orbit Period: 112.43 minutes
Inclination Angle: 66.04 degrees
Ascending Node: 1970-Jan-01 00:00:00
/
ALT (TOPEX)
SENSOR
Name: TOPEX ALTIMETER (ALT (TOPEX))
Swath Width: 5 km
Description: A satellite altimeter consists of a transmitter that sends out very sharp pulses, a sensitive receiver to record the pulse after it is reflected from the sea surface, and an accurate clock to note the time interval between transmission and reception. Examples of satellite altimeters used in the remote sensing of ocean surface height, wave height and wind speed are Seasat, Geosat and Topex/Poseidon.

TOPEX/POSEIDON
Platform
Name: Topography Experiment/Poseidon (TOPEX/POSEIDON)
Orbit Period: 112.43 minutes
Inclination Angle: 66.04 degrees
Ascending Node: 1970-Jan-01 00:00:00
/
SSALT
SENSOR
Name: POSEIDON Solid State Radar Altimeter (SSALT)
Swath Width: 5 km
Description: A satellite altimeter consists of a transmitter that sends out very sharp pulses, a sensitive receiver to record the pulse after it is reflected from the sea surface, and an accurate clock to note the time interval between transmission and reception. Examples of satellite altimeters used in the remote sensing of ocean surface height, wave height and wind speed are Seasat, Geosat and Topex/Poseidon.

TOPEX/POSEIDON
Platform
Name: Topography Experiment/Poseidon (TOPEX/POSEIDON)
Orbit Period: 112.43 minutes
Inclination Angle: 66.04 degrees
Ascending Node: 1970-Jan-01 00:00:00
/
TMR
SENSOR
Name: TOPEX MICROWAVE RADIOMETER (TMR)
Swath Width: 5 km
Description: The TMR measures the sea surface microwave brightness temperatures at three frequencies (18 GHz, 21 GHz and 37 GHz) to provide the total water-vapor content in the troposphere along the altimeter beam. The 21 GHz channel is the primary channel for water-vapor measurement. It is redundant (21A and 21B). The 18 GHz and 37 GHz channels are used to remove the effects of wind speed and cloud cover, respectively in the water-vapor measurement. TMR data are sent to CNES for processing along with their altimeter data. The measurements are combined to obtain the error in the satellite range measurements caused by pulse delay due to the water vapor.

ProjectTOPEX/Poseidon (TOPEX/POSEIDON)
Data ProviderCreator: TOPEX/Poseidon
Release Place: JPL
Release Date: 1997-Jun-19
Resource: http://podaac.jpl.nasa.gov/OceanSurfaceTopography/TOPEX-POSEIDON
Persistent IDPODAAC-TPMGD-XOVRB
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Project Materials
TOPEX/Poseidon cycle listhttps://podaac-tools.jpl.nasa.gov/drive/files/allData/topex/L2/docs/tp_cyclelist.txt
TOPEX/Poseidon cycle start list
Known Issues
TOPEX/Poseidon safeholdshttps://podaac-tools.jpl.nasa.gov/drive/files/allData/topex/L2/docs/tpsafehold.txt
TOPEX/Poseidon safeholds and known data outages
TOPEX/Poseidon maneuvers listhttps://podaac-tools.jpl.nasa.gov/drive/files/allData/topex/L2/docs/tp_maneuver.txt
TOPEX/Poseidon manuevers
Citation TOPEX/Poseidon. 1997. TOPEX/Poseidon L2 Ocean Surface Topography Merged Geophysical Data Record Crossover ver B. Ver. B. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/TPMGD-XOVRB.

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For more information see Data Citations and Acknowledgments.

Journal Reference Benada JR. 1997. PHYSICAL OCEANOGRAPHY DISTRIBUTED ACTIVE ARCHIVE CENTER PO.DAAC MERGED GDR (TOPEX/POSEIDON) Generation B (MGDR-B) USER'S HANDBOOK v.2. https://podaac-tools.jpl.nasa.gov/drive/files/allData/topex/L2/mgdrb/docs/uhmgdrb/html/usr_toc.htm