Dataset: ESA Greenland Ice Sheet Climate Change Initiative (Greenland_Ice_Sheet_cci): Greenland Surface Elevation Change 1992-2014, v1.2#

Dataset identifier: esacci.ICESHEETS.yr.Unspecified.SEC.multi-sensor.multi-platform.UNSPECIFIED.1-2.r1
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.multi-sensor.multi-platform.UNSPECIFIED.1-2.r1')

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	1992-01-01 to 2014-12-31
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
grid_projection	[none]	[none]
landtype	Land type definition.	[none]
SEC	Surface elevation changes, filtered	[none]
SEC_error	Error estimates associated with surface elevation changes	[none]

Full variable metadata#

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	162841
shape	541, 301
chunk_sizes	541, 301
file_chunk_sizes	541, 301
data_type	int16
dimensions	y, x
file_dimensions	y, x

SEC#

Field	Value
long_name	Surface elevation changes, filtered
Contributor	DTU-GDK & NERSC
Comment	Combination of along-track and crossovers
Source	ERS-2 RA and Envisat RA-2
Bias_correction	None
Time	January 2001 - December 2005
level1_source	ICE1
geophysical_corrections	dry tropo, wet tropo, ionos, geoc. pole, sol. Earth
slope_correction	POCA + GIMP
backscatter_corrections	Sigma 0
Gridding_method	Kriging / collocation
grid_mapping	grid_projection
Units	m/yr
orig_data_type	float32
fill_value	9999.99
size	162841
shape	541, 301
chunk_sizes	541, 301
file_chunk_sizes	541, 301
data_type	float32
dimensions	y, x
file_dimensions	y, x

SEC_error#

Field	Value
long_name	Error estimates associated with surface elevation changes
Contributor	DTU-GDK & NERSC
Comment	Combination of along-track and crossovers
Source	ERS-2 RA and Envisat RA-2
Bias_correction	None
Time	January 2001 - December 2005
level1_source	ICE1
bias_correction	None
geophysical_corrections	dry tropo, wet tropo, ionos, geoc. pole, sol. Earth
slope_correction	POCA + GIMP
backscatter_corrections	Sigma 0
Gridding_method	Kriging / collocation
grid_mapping	grid_projection
Units	m/yr
orig_data_type	float32
fill_value	9999.0
size	162841
shape	541, 301
chunk_sizes	541, 301
file_chunk_sizes	541, 301
data_type	float32
dimensions	y, x
file_dimensions	y, x

Full dataset metadata#

Field	Value
product_version	1-2
ecv	ICESHEETS
institute	DTU Space
processing_level	Unspecified
product_string	UNSPECIFIED
data_type	SEC
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 satellite (ERS‐1, ERS‐2, Envisat and Cryosat) radar altimetry. The ice mask is based on the GEUS/GST land/ice/ocean mask provided as part of national mapping projects, and based on 1980’s aerial photography. The data from ERS and Envisat are based on a 5‐year running average, using combined algorithms of repeat‐track (RT), along‐track (AT) or cross‐over (XO) algorithms, and include propagated error estimates. It is important to note that different processing algorithms were applied to the ERS‐1, ERS‐2, Envisat and CryoSat data; for details see the Product User Guide (PUG), available on the CCI website and in the documentation section here. For ERS‐1, the radar data were processed using a cross‐over algorithm (XO) only. For ERS‐2 data and Envisat data in repeat mode, a combination of RT and XO algorithms was applied, followed by filtering. For across‐mission (i.e. ERS‐2‐Envisat) combinations, and for Envisat operating in a drifting orbit, an AT and XO combination was applied (the difference between RT and AT algorithms is that AT use reference tracks and searches for data in the vicinity of this track). For CryoSat data a binning/gridding and plane fit method has been applied, following by weak filtering (0.05 degree resolution).
title	ESA Greenland Ice Sheet Climate Change Initiative (Greenland_Ice_Sheet_cci): Greenland Surface Elevation Change 1992-2014, v1.2
publication_date	2016-04-15T14:38:14
uuid	a7b87a912c494c03b4d2fa5ab8479d1c
catalog_url	https://catalogue.ceda.ac.uk/uuid/a7b87a912c494c03b4d2fa5ab8479d1c
sensor_id	multi-sensor
platform_id	multi-platform
cci_project	ICESHEETS