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Dataset Overview | National Centers for Environmental Information (NCEI)

Global stacked sea surface height profiles from Sentinel-3A Psuedo-Low Rate Mode (PLRM) satellite altimeter data from 2016-04-08 to 2020-04-05 (NCEI Accession 0219901)

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NetCDF file result_s3a_plrm_stack.nc contains longitude, latitude, number of cycles, sigma, and stacked sea surface height records for 770 Sentinel-3A Pseudo-Low Rate Mode (PLRM) satellite altimeter passes. Repeat cycles were aligned to a common position along a synthetic track having 20239 records between +/-81.419 latitude. Stacking is the median sea surface height profile from multiple repeat cycles. Sigma is the expected one sigma error in a single measurement. The number of cycles is the quantity that passed selection criteria and were included in a stack. Repeat cycles 1 to 56 were used.
  • Cite as: Marks, Karen M.; Smith, Walter H.F. (2020). Global stacked sea surface height profiles from Sentinel-3A Psuedo-Low Rate Mode (PLRM) satellite altimeter data from 2016-04-08 to 2020-04-05 (NCEI Accession 0219901). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/m0hw-a781. Accessed [date].
gov.noaa.nodc:0219901
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  • Originator data format
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Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 2016-04-08 to 2020-04-05
Spatial Bounding Box Coordinates
West: -180
East: 180
South: -81.419
North: 81.419
Spatial Coverage Map
General Documentation
Associated Resources
  • Marks, K. and Smith W., 2018: A method of stacking AltiKa repeat cycle data that may reveal 75,000+ possible seamounts. Earth and Space Sci, Vol. 5. https://doi.org/10.1029/2018EA000440.
  • Marks, K. and Smith W., 2016: Detecting small seamounts in AltiKa repeat cycle data, Mar. Geophys. Res. Vol.37. https://doi.org/10.1007/s11001-016-9293-0
  • Smith, W., 2015: Resolution of seamount geoid anomalies achieved by the SARAL AltiKa and Envisat RA2 satellite radar altimeters, Mar Geodesy, Vol.38. https://doi.org/10.1080/01490419.2015.1014950
  • Altimetric Bathymetry - Detecting Seamounts in Stacked Altimeter
Publication Dates
  • publication: 2020-10-15
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Supplemental Information
Submission Package ID: KLE6WA
Purpose Sea surface height data were stacked to reinforce geoid anomalies arising from seafloor topography while reducing noise.
Use Limitations
  • accessLevel: Public
  • 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.
Dataset Citation
  • Cite as: Marks, Karen M.; Smith, Walter H.F. (2020). Global stacked sea surface height profiles from Sentinel-3A Psuedo-Low Rate Mode (PLRM) satellite altimeter data from 2016-04-08 to 2020-04-05 (NCEI Accession 0219901). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/m0hw-a781. Accessed [date].
Cited Authors
Principal Investigators
Collaborators
Contributors
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Publishers
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science Keywords Provider Keywords
  • number_of_cycles
  • sigma
  • stacked sea surface height
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords
Platform keywords NODC PLATFORM NAMES THESAURUS Global Change Master Directory (GCMD) Platform Keywords
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Marks, Karen M.; Smith, Walter H.F. (2020). Global stacked sea surface height profiles from Sentinel-3A Psuedo-Low Rate Mode (PLRM) satellite altimeter data from 2016-04-08 to 2020-04-05 (NCEI Accession 0219901). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/m0hw-a781. Accessed [date].
Access Constraints
  • 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.
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Processing Steps
  • 2020-10-15T10:02:50Z - NCEI Accession 0219901 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: LONGITUDE (calculated); Units: degrees E; Observation Category: model output; Sampling Instrument: satellite sensor - altimeter; Sampling and Analyzing Method: Sentinel-3A PLRM repeat cycles are aligned to a common position along a synthetic track having 20239 records between +/-81.419 latitude. East longitude relative to Greenwich meridian. Positive longitude is East longitude, negative longitude is West longitude..
  • Parameter or Variable: LATITUDE (calculated); Units: degrees N; Observation Category: model output; Sampling Instrument: satellite sensor - altimeter; Sampling and Analyzing Method: Sentinel-3A PLRM repeat cycles are aligned to a common position along a synthetic track having 20239 records between +/-81.419 latitude. Positive latitude is North latitude, negative latitude is South latitude..
  • Parameter or Variable: Number of Cycles (calculated); Units: cycles; Observation Category: other; Sampling Instrument: satellite sensor - altimeter; Sampling and Analyzing Method: Each of 770 Sentinel-3A PLRM passes has up to 54 cycles selected for this analysis. The number of cycles is the quantity used in the stack for each pass..
  • Parameter or Variable: Sigma (calculated); Units: meters; Observation Category: model output; Sampling Instrument: satellite sensor - altimeter; Sampling and Analyzing Method: Sigma is expected error in a single measurement. Sigma of the stack = sigma/sqrt((2N+1)/3), where N = number of cycles.
  • Parameter or Variable: Stacked sea surface height (calculated); Units: meters; Observation Category: model output; Sampling Instrument: satellite sensor - altimeter; Sampling and Analyzing Method: Stacked sea surface height is the median sea surface height profile from multiple repeat cycles..
Acquisition Information (collection)
Instrument
  • satellite sensor - altimeter
  • SRAL
Platform
  • Sentinel-3A
Last Modified: 2023-08-30T13:13:42Z
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