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#

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