Dataset: ESA Greenland Ice Sheet Climate Change Initiative (Greenland_Ice_Sheet_cci): Ice Velocity time series for the Helheim glacier from ERS-1, ERS-2 and Envisat data for 1996-2010, v1.1

Dataset: ESA Greenland Ice Sheet Climate Change Initiative (Greenland_Ice_Sheet_cci): Ice Velocity time series for the Helheim glacier from ERS-1, ERS-2 and Envisat data for 1996-2010, v1.1#

Dataset identifier: esacci.ICESHEETS.unspecified.Unspecified.IV.multi-sensor.multi-platform.UNSPECIFIED.1-1.greenland_timeseries_Helheim
Data store: cciodp

How to open this dataset in AVL JupyterLab

cciodp_store = new_data_store('cciodp')
ds = cciodp_store.open_data('esacci.ICESHEETS.unspecified.Unspecified.IV.multi-sensor.multi-platform.UNSPECIFIED.1-1.greenland_timeseries_Helheim')

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	1996-05-28 to 2010-02-26

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
land_ice_surface_easting_velocity	[none]	m/day
land_ice_surface_northing_velocity	[none]	m/day
land_ice_surface_vertical_velocity	[none]	m/day
land_ice_surface_velocity_magnitude	[none]	m/day
land_ice_surface_easting_velocity_std	[none]	m/day
land_ice_surface_northing_velocity_std	[none]	m/day
land_ice_surface_velocity_magnitude_std	[none]	m/day

Full variable metadata#

crs#

Field	Value
grid_mapping_name	polar_stereographic
standard_parallel	70.0
longitude_of_prime_meridian	0.0
straight_vertical_longitude_from_pole	-45.0
semi_major_axis	6378137.0
inverse_flattening	298.257223563
latitude_of_projection_origin	90.0
false_easting	0.0
false_northing	0.0
DODS	strlen: 0
orig_data_type	bytes1024
size	1
shape	1
chunk_sizes	1
file_chunk_sizes	1
data_type	bytes1024
dimensions
file_dimensions

land_ice_surface_easting_velocity#

Field	Value
description	easting ice velocity
grid_mapping	crs
coordinates	time y x
cell_methods	time: mean (weighted average (based on error estimates) over contributing acquisitons)
missing_value	1e+20
units	m/day
orig_data_type	float32
fill_value	1e+20
size	1611618
shape	38, 201, 211
chunk_sizes	12, 47, 50
file_chunk_sizes	12, 47, 50
data_type	float32
dimensions	time, y, x
file_dimensions	time, y, x

land_ice_surface_northing_velocity#

Field	Value
description	northing ice velocity
grid_mapping	crs
coordinates	time y x
cell_methods	time: mean (weighted average (based on error estimates) over contributing acquisitons)
missing_value	1e+20
units	m/day
orig_data_type	float32
fill_value	1e+20
size	1611618
shape	38, 201, 211
chunk_sizes	12, 47, 50
file_chunk_sizes	12, 47, 50
data_type	float32
dimensions	time, y, x
file_dimensions	time, y, x

land_ice_surface_vertical_velocity#

Field	Value
description	vertical ice velocity
grid_mapping	crs
coordinates	time y x
cell_methods	time: mean (weighted average (based on error estimates) over contributing acquisitons)
missing_value	1e+20
units	m/day
orig_data_type	float32
fill_value	1e+20
size	1611618
shape	38, 201, 211
chunk_sizes	12, 47, 50
file_chunk_sizes	12, 47, 50
data_type	float32
dimensions	time, y, x
file_dimensions	time, y, x

land_ice_surface_velocity_magnitude#

Field	Value
units	m/day
description	magnitude of horizontal ice velocity
grid_mapping	crs
coordinates	time y x
cell_methods	time: mean (weighted average (based on error estimates) over contributing acquisitons)
missing_value	1e+20
orig_data_type	float32
fill_value	1e+20
size	1611618
shape	38, 201, 211
chunk_sizes	12, 47, 50
file_chunk_sizes	12, 47, 50
data_type	float32
dimensions	time, y, x
file_dimensions	time, y, x

land_ice_surface_easting_velocity_std#

Field	Value
units	m/day
description	easting ice velocity error estimate
grid_mapping	crs
coordinates	time y x
cell_methods	time: mean (weighted average (based on error estimates) over contributing acquisitons)
missing_value	1e+20
orig_data_type	float32
fill_value	1e+20
size	1611618
shape	38, 201, 211
chunk_sizes	12, 47, 50
file_chunk_sizes	12, 47, 50
data_type	float32
dimensions	time, y, x
file_dimensions	time, y, x

land_ice_surface_northing_velocity_std#

Field	Value
units	m/day
description	northing ice velocity error estimate
grid_mapping	crs
coordinates	time y x
cell_methods	time: mean (weighted average (based on error estimates) over contributing acquisitons)
missing_value	1e+20
orig_data_type	float32
fill_value	1e+20
size	1611618
shape	38, 201, 211
chunk_sizes	12, 47, 50
file_chunk_sizes	12, 47, 50
data_type	float32
dimensions	time, y, x
file_dimensions	time, y, x

land_ice_surface_velocity_magnitude_std#

Field	Value
units	m/day
description	horizontal ice velocity error magnitude estimate
grid_mapping	crs
coordinates	time y x
cell_methods	time: mean (weighted average (based on error estimates) over contributing acquisitons)
missing_value	1e+20
orig_data_type	float32
fill_value	1e+20
size	1611618
shape	38, 201, 211
chunk_sizes	12, 47, 50
file_chunk_sizes	12, 47, 50
data_type	float32
dimensions	time, y, x
file_dimensions	time, y, x

Full dataset metadata#

Field	Value
product_version	1-1
title	ESA Greenland Ice Sheet Climate Change Initiative (Greenland_Ice_Sheet_cci): Ice Velocity time series for the Helheim glacier from ERS-1, ERS-2 and Envisat data for 1996-2010, v1.1
project	ESA Greenland CCI
ecv	ICESHEETS
institute	The Geological Survey of Denmark and Greenland
processing_level	Unspecified
product_string	UNSPECIFIED
data_type	IV
abstract	This dataset contains a time series of ice velocities for the Helheim glacier in Greenland derived from intensity-tracking of ERS-1, ERS-2 and Envisat data acquired between 29/05/1996 and 26/2/2010. It provides components of the ice velocity and the magnitude of the velocity and has been produced by the ESA Greenland Ice Sheet Climate Change Initiative (CCI) project. The data are provided on a polar stereographic grid (EPSG3413: Latitude of true scale 70N, Reference Longitude 45E) with 500m grid spacing. The image pairs have a repeat cycle of 35 days. The horizontal velocity is provided in true meters per day, towards EASTING(x) and NORTHING(y) direction of the grid, and the vertical displacement (z), derived from a digital elevation model, is also provided. The product was generated by GEUS (Geological Survey of Denmark and Greenland).
publication_date	2018-11-29T14:51:12
uuid	17767027aa484505b7b732aee6619c74
catalog_url	https://catalogue.ceda.ac.uk/uuid/17767027aa484505b7b732aee6619c74
sensor_id	multi-sensor
platform_id	multi-platform
cci_project	ICESHEETS