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.SIRAL.CryoSat-2.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.SIRAL.CryoSat-2.UNSPECIFIED.v2-0.r1')

Bounding box map#

Bounding box map
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 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 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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
data_type int16
dimensions time
file_dimensions time

iono_corr#

Field Value
long_name GIM ionospheric correction
units m
scale_factor 0.0001
coordinates longitude latitude
orig_data_type int16
fill_value 32767
size 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
data_type int16
dimensions time
file_dimensions time

alt_flag_oper#

Field Value
_Unsigned false
long_name altimeter state flag: altimeter operating
units 1
scale_factor 1.0
coordinates longitude latitude
orig_data_type uint8
fill_value 127
size 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 100192113
shape 100192113
chunk_sizes 100192113
file_chunk_sizes 1590351
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 2016/11/09 16:23:15 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 SIRAL
platform_id CryoSat-2
cci_project SEALEVEL