Dataset: ESA Sea Level Climate Change Initiative (Sea_Level_cci): Fundamental Climate Data Records of sea level anomalies and altimeter standards, Version 2.0#
Dataset identifier: esacci.SEALEVEL.satellite-orbit-frequency.L1.UNSPECIFIED.RA-2.Envisat.UNSPECIFIED.v2-0.r1
Data store: cciodp
How to open this dataset in AVL JupyterLab
cciodp_store = new_data_store('cciodp')
ds = cciodp_store.open_data('esacci.SEALEVEL.satellite-orbit-frequency.L1.UNSPECIFIED.RA-2.Envisat.UNSPECIFIED.v2-0.r1')
Bounding box map#
cciodp_store = new_data_store('cciodp')
ds = cciodp_store.open_data('esacci.SEALEVEL.satellite-orbit-frequency.L1.UNSPECIFIED.RA-2.Envisat.UNSPECIFIED.v2-0.r1')
Map tiles and data from OpenStreetMap, under the ODbL.
Basic information#
| Parameter | Value |
|---|---|
| Bounding box longitude (°) | -180.0 to 180.0 |
| Bounding box latitude (°) | -90.0 to 90.0 |
| Time range | 1993-01-01 to 2015-12-31 |
Click here for full dataset metadata.
Variable list#
Click on a variable name to jump to the variable’s full metadata.
| Variable | Long name | Units |
|---|---|---|
| cycle | Cycle the measurement belongs to | 1 |
| pass | Track in cycle the measurement belongs to | 1 |
| TimeDay | Number of days from reference date | days since 1950-01-01 00:00:00.000 UTC |
| TimeSec | Number of seconds within the day | sec |
| TimeMicroSec | Microseconds: decimal part of the TimeSec variable | 1e-6 sec |
| corssh | Corrected sea surface height above the TOPEX-Poseidon reference ellipso�d | m |
| alt | 1 Hz altitude of satellite | m |
| range | 1 Hz Ku band corrected altimeter range | m |
| sea_state_bias | Non parametric sea state bias correction | m |
| iono_corr | altimeter ionospheric correction on Ku band (filtered), after cycle 64 GIM ionospheric correction | m |
| gpd_wet_tropo_corr | Wet Tropospheric correction based on the GPD+ algorithm , ECMWF over Caspian Sea | m |
| alt_flag_oper | altimeter state flag: altimeter operating: 0=SideA 1=SideB | 1 |
| bathymetry | Bathymetry | m |
| dyn_atmosph_corr | Combined atmospheric correction : high frequency fluctuations of the sea surface topography and inverted barometer height correction computed from rectangular grids | m |
| dry_tropo_corr | Model dry tropospheric correction | m |
| rad_wet_tropo_corr | Radiometer wet tropospheric correction | m |
| model_wet_tropo_corr | model wet tropospheric correction | m |
| mean_sea_surface | Mean sea surface height | m |
| ocean_tide | Ocean tide height (loading tide excluded) | m |
| loading_tide | Loading tide height | m |
| pole_tide | Geocentric pole tide height | m |
| sigma0 | Ku-band Backscatter coefficient | dB |
| solid_earth_tide | Solid earth tide height | m |
| swh | Ku-band Significant wave height | m |
| range_numval | number of valid points for Ku band range | count |
| range_rms | RMS of the Ku band range | m |
| sigma0_numval | number of valid points for Ku band range | count |
| sigma0_rms | RMS of the Ku band backscattering coefficient | dB |
| validation_flag | validation flag: 0=valid, 1=non valid | 1 |
| rad_surf_type | radiometer surface type: 0=ocean, 1=land | 1 |
| regional_bias | regional bias | m |
| global_bias | global bias | m |
| alt_surf_type | altimeter surface type: 0=water, 1=land | 1 |
| ice_flag | ice flag: 0=no ice, 1=ice | 1 |
| rad_qual_interp_flag | 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) | 1 |
| off_nadir_angle | square of the off nadir angle computed from Ku waveforms | degrees2 |
| wind_speed_alt | altimeter wind speed | m/s |
Full variable metadata#
cycle#
| Field | Value |
|---|---|
| long_name | Cycle the measurement belongs to |
| units | 1 |
| orig_data_type | int16 |
| fill_value | 32767 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int16 |
| dimensions | time |
| file_dimensions | time |
pass#
| Field | Value |
|---|---|
| long_name | Track in cycle the measurement belongs to |
| units | 1 |
| orig_data_type | int16 |
| fill_value | 32767 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int16 |
| dimensions | time |
| file_dimensions | time |
TimeDay#
| Field | Value |
|---|---|
| long_name | Number of days from reference date |
| units | days since 1950-01-01 00:00:00.000 UTC |
| coordinates | longitude latitude |
| orig_data_type | int16 |
| fill_value | 32767 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int16 |
| dimensions | time |
| file_dimensions | time |
TimeSec#
| Field | Value |
|---|---|
| long_name | Number of seconds within the day |
| units | sec |
| valid_range | 0, 86400 |
| coordinates | longitude latitude |
| orig_data_type | int32 |
| fill_value | 2147483647 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int32 |
| dimensions | time |
| file_dimensions | time |
TimeMicroSec#
| Field | Value |
|---|---|
| long_name | Microseconds: decimal part of the TimeSec variable |
| units | 1e-6 sec |
| valid_range | 0, 999999 |
| coordinates | longitude latitude |
| orig_data_type | int32 |
| fill_value | 2147483647 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int32 |
| dimensions | time |
| file_dimensions | time |
corssh#
| Field | Value |
|---|---|
| long_name | Corrected sea surface height above the TOPEX-Poseidon reference ellipso�d |
| units | m |
| scale_factor | 0.0001 |
| coordinates | longitude latitude |
| orig_data_type | int32 |
| fill_value | 2147483647 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int32 |
| dimensions | time |
| file_dimensions | time |
alt#
| Field | Value |
|---|---|
| long_name | 1 Hz altitude of satellite |
| units | m |
| scale_factor | 0.0001 |
| add_offset | 700000.0 |
| coordinates | longitude latitude |
| orig_data_type | int32 |
| fill_value | 2147483647 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int32 |
| dimensions | time |
| file_dimensions | time |
range#
| Field | Value |
|---|---|
| long_name | 1 Hz Ku band corrected altimeter range |
| units | m |
| scale_factor | 0.0001 |
| add_offset | 700000.0 |
| coordinates | longitude latitude |
| orig_data_type | int32 |
| fill_value | 2147483647 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int32 |
| dimensions | time |
| file_dimensions | time |
sea_state_bias#
| Field | Value |
|---|---|
| long_name | Non parametric sea state bias correction |
| units | m |
| scale_factor | 0.0001 |
| coordinates | longitude latitude |
| orig_data_type | int16 |
| fill_value | 32767 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int16 |
| dimensions | time |
| file_dimensions | time |
iono_corr#
| Field | Value |
|---|---|
| long_name | altimeter ionospheric correction on Ku band (filtered), after cycle 64 GIM ionospheric correction |
| units | m |
| scale_factor | 0.0001 |
| coordinates | longitude latitude |
| orig_data_type | int16 |
| fill_value | 32767 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int16 |
| dimensions | time |
| file_dimensions | time |
gpd_wet_tropo_corr#
| Field | Value |
|---|---|
| long_name | Wet Tropospheric correction based on the GPD+ algorithm , ECMWF over Caspian Sea |
| units | m |
| scale_factor | 0.0001 |
| coordinates | longitude latitude |
| orig_data_type | int16 |
| fill_value | 32767 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int16 |
| dimensions | time |
| file_dimensions | time |
alt_flag_oper#
| Field | Value |
|---|---|
| _Unsigned | false |
| long_name | altimeter state flag: altimeter operating: 0=SideA 1=SideB |
| units | 1 |
| scale_factor | 1.0 |
| coordinates | longitude latitude |
| orig_data_type | uint8 |
| fill_value | 127 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | uint8 |
| dimensions | time |
| file_dimensions | time |
bathymetry#
| Field | Value |
|---|---|
| long_name | Bathymetry |
| units | m |
| scale_factor | 0.001 |
| coordinates | longitude latitude |
| orig_data_type | int32 |
| fill_value | 2147483647 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int32 |
| dimensions | time |
| file_dimensions | time |
dyn_atmosph_corr#
| Field | Value |
|---|---|
| long_name | Combined atmospheric correction : high frequency fluctuations of the sea surface topography and inverted barometer height correction computed from rectangular grids |
| units | m |
| scale_factor | 0.0001 |
| coordinates | longitude latitude |
| orig_data_type | int16 |
| fill_value | 32767 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int16 |
| dimensions | time |
| file_dimensions | time |
dry_tropo_corr#
| Field | Value |
|---|---|
| long_name | Model dry tropospheric correction |
| units | m |
| scale_factor | 0.0001 |
| coordinates | longitude latitude |
| orig_data_type | int16 |
| fill_value | 32767 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int16 |
| dimensions | time |
| file_dimensions | time |
rad_wet_tropo_corr#
| Field | Value |
|---|---|
| long_name | Radiometer wet tropospheric correction |
| units | m |
| scale_factor | 0.0001 |
| coordinates | longitude latitude |
| orig_data_type | int16 |
| fill_value | 32767 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int16 |
| dimensions | time |
| file_dimensions | time |
model_wet_tropo_corr#
| Field | Value |
|---|---|
| long_name | model wet tropospheric correction |
| units | m |
| scale_factor | 0.0001 |
| coordinates | longitude latitude |
| orig_data_type | int16 |
| fill_value | 32767 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int16 |
| dimensions | time |
| file_dimensions | time |
mean_sea_surface#
| Field | Value |
|---|---|
| long_name | Mean sea surface height |
| units | m |
| scale_factor | 0.0001 |
| coordinates | longitude latitude |
| orig_data_type | int32 |
| fill_value | 2147483647 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int32 |
| dimensions | time |
| file_dimensions | time |
ocean_tide#
| Field | Value |
|---|---|
| long_name | Ocean tide height (loading tide excluded) |
| units | m |
| scale_factor | 0.0001 |
| coordinates | longitude latitude |
| orig_data_type | int32 |
| fill_value | 2147483647 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int32 |
| dimensions | time |
| file_dimensions | time |
loading_tide#
| Field | Value |
|---|---|
| long_name | Loading tide height |
| units | m |
| scale_factor | 0.0001 |
| coordinates | longitude latitude |
| orig_data_type | int32 |
| fill_value | 2147483647 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int32 |
| dimensions | time |
| file_dimensions | time |
pole_tide#
| Field | Value |
|---|---|
| long_name | Geocentric pole tide height |
| units | m |
| scale_factor | 0.0001 |
| coordinates | longitude latitude |
| orig_data_type | int16 |
| fill_value | 32767 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int16 |
| dimensions | time |
| file_dimensions | time |
sigma0#
| Field | Value |
|---|---|
| long_name | Ku-band Backscatter coefficient |
| units | dB |
| scale_factor | 0.001 |
| coordinates | longitude latitude |
| orig_data_type | int16 |
| fill_value | 32767 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int16 |
| dimensions | time |
| file_dimensions | time |
solid_earth_tide#
| Field | Value |
|---|---|
| long_name | Solid earth tide height |
| units | m |
| scale_factor | 0.0001 |
| coordinates | longitude latitude |
| orig_data_type | int16 |
| fill_value | 32767 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int16 |
| dimensions | time |
| file_dimensions | time |
swh#
| Field | Value |
|---|---|
| long_name | Ku-band Significant wave height |
| units | m |
| scale_factor | 0.001 |
| coordinates | longitude latitude |
| orig_data_type | int16 |
| fill_value | 32767 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int16 |
| dimensions | time |
| file_dimensions | time |
range_numval#
| Field | Value |
|---|---|
| _Unsigned | false |
| long_name | number of valid points for Ku band range |
| units | count |
| scale_factor | 1.0 |
| coordinates | longitude latitude |
| orig_data_type | uint8 |
| fill_value | 127 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | uint8 |
| dimensions | time |
| file_dimensions | time |
range_rms#
| Field | Value |
|---|---|
| long_name | RMS of the Ku band range |
| units | m |
| scale_factor | 0.0001 |
| coordinates | longitude latitude |
| orig_data_type | int16 |
| fill_value | 32767 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int16 |
| dimensions | time |
| file_dimensions | time |
sigma0_numval#
| Field | Value |
|---|---|
| _Unsigned | false |
| long_name | number of valid points for Ku band range |
| units | count |
| scale_factor | 1.0 |
| coordinates | longitude latitude |
| orig_data_type | uint8 |
| fill_value | 127 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | uint8 |
| dimensions | time |
| file_dimensions | time |
sigma0_rms#
| Field | Value |
|---|---|
| long_name | RMS of the Ku band backscattering coefficient |
| units | dB |
| scale_factor | 0.001 |
| coordinates | longitude latitude |
| orig_data_type | int16 |
| fill_value | 32767 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int16 |
| dimensions | time |
| file_dimensions | time |
validation_flag#
| Field | Value |
|---|---|
| _Unsigned | false |
| long_name | validation flag: 0=valid, 1=non valid |
| units | 1 |
| scale_factor | 1.0 |
| coordinates | longitude latitude |
| orig_data_type | uint8 |
| fill_value | 127 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | uint8 |
| dimensions | time |
| file_dimensions | time |
rad_surf_type#
| Field | Value |
|---|---|
| _Unsigned | false |
| long_name | radiometer surface type: 0=ocean, 1=land |
| units | 1 |
| scale_factor | 1.0 |
| coordinates | longitude latitude |
| orig_data_type | uint8 |
| fill_value | 127 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | uint8 |
| dimensions | time |
| file_dimensions | time |
regional_bias#
| Field | Value |
|---|---|
| long_name | regional bias |
| units | m |
| scale_factor | 0.0001 |
| coordinates | longitude latitude |
| orig_data_type | int32 |
| fill_value | 2147483647 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int32 |
| dimensions | time |
| file_dimensions | time |
global_bias#
| Field | Value |
|---|---|
| long_name | global bias |
| units | m |
| scale_factor | 0.0001 |
| coordinates | longitude latitude |
| orig_data_type | int32 |
| fill_value | 2147483647 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int32 |
| dimensions | time |
| file_dimensions | time |
alt_surf_type#
| Field | Value |
|---|---|
| _Unsigned | false |
| long_name | altimeter surface type: 0=water, 1=land |
| units | 1 |
| scale_factor | 1.0 |
| coordinates | longitude latitude |
| orig_data_type | uint8 |
| fill_value | 127 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | uint8 |
| dimensions | time |
| file_dimensions | time |
ice_flag#
| Field | Value |
|---|---|
| _Unsigned | false |
| long_name | ice flag: 0=no ice, 1=ice |
| units | 1 |
| scale_factor | 1.0 |
| coordinates | longitude latitude |
| orig_data_type | uint8 |
| fill_value | 127 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | uint8 |
| dimensions | time |
| file_dimensions | time |
rad_qual_interp_flag#
| Field | Value |
|---|---|
| _Unsigned | false |
| 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) |
| units | 1 |
| scale_factor | 1.0 |
| coordinates | longitude latitude |
| orig_data_type | uint8 |
| fill_value | 127 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | uint8 |
| dimensions | time |
| file_dimensions | time |
off_nadir_angle#
| Field | Value |
|---|---|
| long_name | square of the off nadir angle computed from Ku waveforms |
| units | degrees2 |
| scale_factor | 0.0001 |
| coordinates | longitude latitude |
| orig_data_type | int16 |
| fill_value | 32767 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int16 |
| dimensions | time |
| file_dimensions | time |
wind_speed_alt#
| Field | Value |
|---|---|
| long_name | altimeter wind speed |
| units | m/s |
| scale_factor | 0.001 |
| coordinates | longitude latitude |
| orig_data_type | int16 |
| fill_value | 32767 |
| size | 182273104 |
| shape | 182273104 |
| chunk_sizes | 182273104 |
| file_chunk_sizes | 1752626 |
| data_type | int16 |
| dimensions | time |
| file_dimensions | time |
Full dataset metadata#
| Field | Value |
|---|---|
| title | ESA Sea Level Climate Change Initiative (Sea_Level_cci): Fundamental Climate Data Records of sea level anomalies and altimeter standards, Version 2.0 |
| history | 2016/11/08 10:39:05 slcci@px-1014 ConvertATPInternalToCF: Converted to CF |
| ecv | SEALEVEL |
| processing_level | L1 |
| product_string | UNSPECIFIED |
| product_version | v2-0 |
| data_type | UNSPECIFIED |
| 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 |
| publication_date | 2017-01-27T17:00:28 |
| uuid | 2785ee1ec6274be39d11e7e7ce51b381 |
| catalog_url | https://catalogue.ceda.ac.uk/uuid/2785ee1ec6274be39d11e7e7ce51b381 |
| sensor_id | RA-2 |
| platform_id | Envisat |
| cci_project | SEALEVEL |