Dataset: ESA Greenland Ice Sheet Climate Change Initiative (Greenland_Ice_Sheet_cci): Greenland Surface Elevation Change from Cryosat-2, v2.2#

Dataset identifier: esacci.ICESHEETS.yr.Unspecified.SEC.SIRAL.CryoSat-2.UNSPECIFIED.2-2.greenland_sec_cryosat_2yr
Data store: cciodp

How to open this dataset in AVL JupyterLab  

cciodp_store = new_data_store('cciodp')
ds = cciodp_store.open_data('esacci.ICESHEETS.yr.Unspecified.SEC.SIRAL.CryoSat-2.UNSPECIFIED.2-2.greenland_sec_cryosat_2yr')

Bounding box map#

Bounding box map
Map tiles and data from OpenStreetMap, under the ODbL.

Basic information#

Parameter Value
Bounding box longitude (°) -80.0 to -10.0
Bounding box latitude (°) 60.0 to 90.0
Time range 2011-01-01 to 2017-12-31
Time period 1Y

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
t Average time for time slice days since 2000-01-01 00:00:00
start_time Start of time slice days since 2000-01-01 00:00:00
end_time End of time slice days since 2000-01-01 00:00:00
grid_projection [none] [none]
landtype Land type definition. [none]
SEC Surface elevation changes, 20.0 km gaussian filter [none]
SEC_error Error estimates associated with surface elevation changes [none]

Full variable metadata#

t#

Field Value
long_name Average time for time slice
units days since 2000-01-01 00:00:00
title Time
calendar gregorian
orig_data_type float32
fill_value None
size 6
shape 6
chunk_sizes 6
file_chunk_sizes 6
data_type float32
dimensions Time
file_dimensions Time

start_time#

Field Value
long_name Start of time slice
units days since 2000-01-01 00:00:00
title Time
calendar gregorian
orig_data_type float32
fill_value None
size 6
shape 6
chunk_sizes 6
file_chunk_sizes 6
data_type float32
dimensions Time
file_dimensions Time

end_time#

Field Value
long_name End of time slice
units days since 2000-01-01 00:00:00
title Time
calendar gregorian
orig_data_type float32
fill_value None
size 6
shape 6
chunk_sizes 6
file_chunk_sizes 6
data_type float32
dimensions Time
file_dimensions Time

grid_projection#

Field Value
ellipsoid WGS84
false_easting 0.0
false_northing 0.0
grid_mapping_name polar_stereographic
latitude_of_projection_origin 90.0
standard_parallel 70.0
straight_vertical_longitude_from_pole -45.0
DODS strlen: 0
orig_data_type bytes1024
size 1
shape 1
chunk_sizes 1
file_chunk_sizes 1
data_type bytes1024
dimensions
file_dimensions

landtype#

Field Value
long_name Land type definition.
Contributor GEUS and DTU-S
Comment Ocean: 1, Land: 2, Outlying ice caps: 3, Ice sheet: 4
Source Willy Weng (GEUS), Simon Ekholm, Arne Olesen (DTU-S)
Bias_correction None
Time None
level1_source None
bias_correction None
geophysical_corrections None
slope_correction None
backscatter_corrections None
Gridding_method
grid_mapping grid_projection
ocean 1
land 2
outlying_ice_caps 3
ice_sheet 4
orig_data_type int16
fill_value 9999
size 199550
shape 614, 325
chunk_sizes 614, 325
file_chunk_sizes 614, 325
data_type int16
dimensions y, x
file_dimensions y, x

SEC#

Field Value
long_name Surface elevation changes, 20.0 km gaussian filter
Contributor DTU-GDK
Comment CCI version of the LSM5 from Simonsen et al. 2017
Source Cryosat-2
Bias_correction Backscatter and LeW
Time January 2011 until December 2016. At year 2 running mean
level1_source Cryosat L1 Baseline C
geophysical_corrections All applied to the Cryosat L2 produce
slope_correction GIMP and MSSL slope model from L2 product
backscatter_corrections Backscatter and Leading edge
Gridding_method Weighted interpolation
grid_mapping grid_projection
ref Simonsen et al. 2017
Units m/yr
orig_data_type float32
fill_value 9999.99
size 1197300
shape 614, 325, 6
chunk_sizes 614, 325, 6
file_chunk_sizes 614, 325, 6
data_type float32
dimensions y, x, Time
file_dimensions y, x, Time

SEC_error#

Field Value
long_name Error estimates associated with surface elevation changes
Contributor DTU-GDK
Comment CCI version of the LSM5 from Simonsen et al. 2017
Source Cryosat-2
Bias_correction Backscatter and LeW
Time January 2011 until December 2016. At year running mean
level1_source Cryosat L1 Baseline C
geophysical_corrections All applied to the Cryosat L2 produce
slope_correction GIMP and MSSL slope model from L2 product
backscatter_corrections Backscatter and Leading edge
Gridding_method Weighted interpolation
grid_mapping grid_projection
Units m/yr
orig_data_type float32
fill_value 9999.99
size 1197300
shape 614, 325, 6
chunk_sizes 614, 325, 6
file_chunk_sizes 614, 325, 6
data_type float32
dimensions y, x, Time
file_dimensions y, x, Time

Full dataset metadata#

Field Value
product_version 2-2
ecv ICESHEETS
institute DTU Space
processing_level Unspecified
product_string UNSPECIFIED
data_type SEC
sensor_id SIRAL
platform_id CryoSat-2
abstract This data set is part of the ESA Greenland Ice sheet CCI project. The data set provides surface elevation changes (SEC) for the Greenland Ice sheet derived from Cryosat 2 satellite radar altimetry, for the time period between 2010 and 2017. The surface elevation change data are provided as 2-year means (2011-2012, 2012-2013, 2013-2014, 2014-2015, 2015-2016, and 2016-2017), and five-year means are also provided (2011-2015, 2012-2016, 2013-2017), along with their associated errors. Data are provided in both NetCDF and gridded ASCII format, as well as png plots. The algorithm used to devive the product is described in the paper “Implications of changing scattering properties on the Greenland ice sheet volume change from Cryosat-2 altimetry” by S.B. Simonsen and L.S. Sørensen, Remote Sensing of the Environment, 190,pp.207-216, doi:10.1016/j.rse.2016.12.012
title ESA Greenland Ice Sheet Climate Change Initiative (Greenland_Ice_Sheet_cci): Greenland Surface Elevation Change from Cryosat-2, v2.2
publication_date 2018-11-22T11:59:39
uuid 41e9783d4caa447b99f653c065805579
catalog_url https://catalogue.ceda.ac.uk/uuid/41e9783d4caa447b99f653c065805579
cci_project ICESHEETS