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Dataset

 

ESA Sea Level Climate Change Initiative (Sea_Level_cci): Fundamental Climate Data Records of sea level anomalies and altimeter standards, Version 2.0

Status: Completed
Online Status: ONLINE
Publication State: Published
Publication Date: 2017-01-27
Download Stats: last 12 months

Abstract

As part of the European Space Agency's (ESA) Sea Level Climate Change Initiative (CCI) Project, Fundamental Climate Data Records (FCDRs) have been computed for all the altimeter missions used within the project. These FCDR's consist of along track values of sea level anomalies and altimeter standards for the period between 1993 and 2015. This version of the product is v2.0.

The FCDR's are mono-mission products, derived from the respective altimeter level-2 products. They have been produced along the tracks of the different altimeters, with a resolution of 1Hz, corresponding to a ground distance close to 6km. The dataset is separated by altimeter mission, and divided into files by altimetric cycle corresponding to the repetivity of the mission.

When using or referring to the Sea Level cci products, please mention the associated DOIs and also use the following citation where a detailed description of the Sea Level_cci project and products can be found:

Ablain, M., Cazenave, A., Larnicol, G., Balmaseda, M., Cipollini, P., Faugère, Y., Fernandes, M. J., Henry, O., Johannessen, J. A., Knudsen, P., Andersen, O., Legeais, J., Meyssignac, B., Picot, N., Roca, M., Rudenko, S., Scharffenberg, M. G., Stammer, D., Timms, G., and Benveniste, J.: Improved sea level record over the satellite altimetry era (1993–2010) from the Climate Change Initiative project, Ocean Sci., 11, 67-82, doi:10.5194/os-11-67-2015, 2015.

For further information on the Sea Level CCI products, and to register for these projects please email: info-sealevel@esa-sealevel-cci.org

Citable as:  ESA Sea Level CCI project team (2017): ESA Sea Level Climate Change Initiative (Sea_Level_cci): Fundamental Climate Data Records of sea level anomalies and altimeter standards, Version 2.0. Centre for Environmental Data Analysis, date of citation. https://catalogue.ceda.ac.uk/uuid/2785ee1ec6274be39d11e7e7ce51b381
Abbreviation: Not defined
Keywords: ESA CCI, SLA

Details

Previous Info:
No news update for this record
Previously used record identifiers:
No related previous identifiers.
Access rules:
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence: http://licences.ceda.ac.uk/image/data_access_condition/esacci_sealevel_terms_and_conditions.pdf. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

Data was produced by the ESA SL CCI team and was transferred to CEDA as part of the ESA CCI Open Data Portal project.

File Format:
Data are in NetCDF format

Process overview

  • units: m
  • var_id: range
  • long_name: 1 Hz Ka band corrected altimeter range
  • names: 1 Hz Ka band corrected altimeter range
  • units: m
  • var_id: range
  • long_name: 1 Hz Ku band corrected altimeter range
  • names: 1 Hz Ku band corrected altimeter range
  • units: m
  • var_id: alt
  • long_name: 1 Hz altitude of satellite
  • names: 1 Hz altitude of satellite
  • units: m
  • var_id: sea_state_bias
  • long_name: BM3 sea state bias correction
  • names: BM3 sea state bias correction
  • units: m
  • var_id: bathymetry
  • long_name: Bathymetry
  • names: Bathymetry
  • units: m
  • long_name: Combined atmospheric correction : high frequency fluctuations of the sea surface topography and inverted barometer height correction computed from rectangular grids
  • var_id: dyn_atmosph_corr
  • names: Combined atmospheric correction : high frequency fluctuations of the sea surface topography and inverted barometer height correction computed from rectangular grids
  • units: m
  • var_id: gpd_wet_tropo_corr
  • long_name: Composite wet tropospheric correction, ECMWF over Caspian Sea
  • names: Composite wet tropospheric correction, ECMWF over Caspian Sea
  • units: m
  • long_name: Corrected sea surface height above the TOPEX-Poseidon reference ellipso�d
  • var_id: corssh
  • names: Corrected sea surface height above the TOPEX-Poseidon reference ellipso�d
  • units: 1
  • long_name: Cycle the measurement belongs to
  • var_id: cycle
  • names: Cycle the measurement belongs to
  • units: m
  • var_id: iono_corr
  • long_name: GIM ionospheric correction
  • names: GIM ionospheric correction
  • units: m
  • long_name: Geocentric pole tide height
  • var_id: pole_tide
  • names: Geocentric pole tide height
  • units: m
  • var_id: iono_corr
  • long_name: Ionospheric correction (till cycle 036 NIC09, afterwards GIM)
  • names: Ionospheric correction (till cycle 036 NIC09, afterwards GIM)
  • units: dB
  • long_name: Ku-band Backscatter coefficient
  • var_id: sigma0
  • names: Ku-band Backscatter coefficient
  • units: m
  • var_id: swh
  • long_name: Ku-band Significant wave height
  • names: Ku-band Significant wave height
  • units: m
  • long_name: Loading tide height
  • var_id: loading_tide
  • names: Loading tide height
  • units: m
  • long_name: Mean sea surface height
  • var_id: mean_sea_surface
  • names: Mean sea surface height
  • units: 1e-6 sec
  • long_name: Microseconds: decimal part of the TimeSec variable
  • var_id: TimeMicroSec
  • names: Microseconds: decimal part of the TimeSec variable
  • units: m
  • long_name: Model dry tropospheric correction
  • var_id: dry_tropo_corr
  • names: Model dry tropospheric correction
  • units: m
  • long_name: NIC ionospheric correction
  • var_id: iono_corr
  • names: NIC ionospheric correction
  • units: m
  • long_name: Non parametric sea state bias correction
  • var_id: sea_state_bias
  • names: Non parametric sea state bias correction
  • units: m
  • var_id: sea_state_bias
  • long_name: Non parametric sea state bias correction for Topex, BM4 formula for Poseidon
  • names: Non parametric sea state bias correction for Topex, BM4 formula for Poseidon
  • long_name: Number of days from reference date
  • var_id: TimeDay
  • names: Number of days from reference date
  • units: sec
  • long_name: Number of seconds within the day
  • var_id: TimeSec
  • names: Number of seconds within the day
  • units: m
  • long_name: Ocean tide height (loading tide excluded)
  • var_id: ocean_tide
  • names: Ocean tide height (loading tide excluded)
  • units: dB
  • long_name: RMS of the Ku band backscattering coefficient
  • var_id: sigma0_rms
  • names: RMS of the Ku band backscattering coefficient
  • units: m
  • long_name: RMS of the Ku band range
  • var_id: range_rms
  • names: RMS of the Ku band range
  • units: m
  • long_name: Radiometer wet tropospheric correction
  • var_id: rad_wet_tropo_corr
  • names: Radiometer wet tropospheric correction
  • units: m
  • long_name: Solid earth tide height
  • var_id: solid_earth_tide
  • names: Solid earth tide height
  • units: 1
  • long_name: Track in cycle the measurement belongs to
  • var_id: pass
  • names: Track in cycle the measurement belongs to
  • units: m
  • var_id: gpd_wet_tropo_corr
  • long_name: Wet Tropospheric correction based on the GPD+ algorithm , ECMWF over Caspian Sea
  • names: Wet Tropospheric correction based on the GPD+ algorithm , ECMWF over Caspian Sea
  • units: m
  • long_name: Wet Tropospheric correction based on the GPD+ algorithm, ECMWF over Caspian Sea
  • var_id: gpd_wet_tropo_corr
  • names: Wet Tropospheric correction based on the GPD+ algorithm, ECMWF over Caspian Sea
  • units: m
  • var_id: iono_corr
  • long_name: altimeter ionospheric correction on Ku band (filtered)
  • names: altimeter ionospheric correction on Ku band (filtered)
  • units: m
  • var_id: iono_corr
  • long_name: altimeter ionospheric correction on Ku band (filtered) for Topex, Doris for Poseidon
  • names: altimeter ionospheric correction on Ku band (filtered) for Topex, Doris for Poseidon
  • units: m
  • var_id: iono_corr
  • long_name: altimeter ionospheric correction on Ku band (filtered), after cycle 64 GIM ionospheric correction
  • names: altimeter ionospheric correction on Ku band (filtered), after cycle 64 GIM ionospheric correction
  • units: 1
  • long_name: altimeter state flag: altimeter operating
  • var_id: alt_flag_oper
  • names: altimeter state flag: altimeter operating
  • units: 1
  • var_id: alt_flag_oper
  • long_name: altimeter state flag: altimeter operating: 0=Poseidon 1=Topex
  • names: altimeter state flag: altimeter operating: 0=Poseidon 1=Topex
  • units: 1
  • var_id: alt_flag_oper
  • long_name: altimeter state flag: altimeter operating: 0=SideA 1=SideB
  • names: altimeter state flag: altimeter operating: 0=SideA 1=SideB
  • units: 1
  • long_name: altimeter surface type: 0=water, 1=land
  • var_id: alt_surf_type
  • names: altimeter surface type: 0=water, 1=land
  • units: m/s
  • long_name: altimeter wind speed
  • var_id: wind_speed_alt
  • names: altimeter wind speed
  • units: 1
  • long_name: flag for brightness temperatures: 0=all channels good 1=one or more channels fair 2=one or more channels poor 3=one or more channels with interpolation failure (bad)
  • var_id: rad_qual_interp_flag
  • names: flag for brightness temperatures: 0=all channels good 1=one or more channels fair 2=one or more channels poor 3=one or more channels with interpolation failure (bad)
  • units: m
  • long_name: global bias
  • var_id: global_bias
  • names: global bias
  • units: 1
  • long_name: ice flag: 0=no ice, 1=ice
  • var_id: ice_flag
  • names: ice flag: 0=no ice, 1=ice
  • units: m
  • long_name: model wet tropospheric correction
  • var_id: model_wet_tropo_corr
  • names: model wet tropospheric correction
  • units: count
  • long_name: number of valid points for Ku band range
  • var_id: sigma0_numval
  • names: number of valid points for Ku band range
  • units: 1
  • long_name: radiometer surface type: 0=ocean, 1=land
  • var_id: rad_surf_type
  • names: radiometer surface type: 0=ocean, 1=land
  • units: m
  • long_name: regional bias
  • var_id: regional_bias
  • names: regional bias
  • units: degrees2
  • long_name: square of the off nadir angle computed from Ku waveforms
  • var_id: off_nadir_angle
  • names: square of the off nadir angle computed from Ku waveforms
  • units: 1
  • long_name: validation flag: 0=valid, 1=non valid
  • var_id: validation_flag
  • names: validation flag: 0=valid, 1=non valid

Co-ordinate Variables

  • units: degrees_north
  • standard_name: latitude
  • var_id: latitude
  • long_name: Latitude of measurement
  • names: latitude, Latitude of measurement
  • units: degrees_east
  • standard_name: longitude
  • var_id: longitude
  • long_name: Longitude of measurement
  • names: longitude, Longitude of measurement
  • standard_name: time
  • var_id: time
  • long_name: Time of measurement
  • names: time, Time of measurement
Coverage
Temporal Range
Start time:
1993-01-01T00:00:00
End time:
2015-12-31T23:59:59
Geographic Extent

 
90.0000°
 
-180.0000°
 
180.0000°
 
-90.0000°
 
Related parties
Principal Investigators (1)