Dataset: ESA Greenland Ice Sheet Climate Change Initiative (Greenland_Ice_Sheet_cci): Ice Velocity data for the Greenland Northern Drainage basin from ERS-1 for winter 1991-1992, v1.1 (June 2016 release)#

Dataset identifier: esacci.ICESHEETS.unspecified.Unspecified.IV.AMI-SAR.ERS-1.UNSPECIFIED.1-1.greenland_northern_drainage_basin_winter_1991_1992
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.AMI-SAR.ERS-1.UNSPECIFIED.1-1.greenland_northern_drainage_basin_winter_1991_1992')

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 1991-12-29 to 1992-03-22

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 9000000
shape 1, 3000, 3000
chunk_sizes 1, 1464, 1464
file_chunk_sizes 1, 1464, 1464
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 9000000
shape 1, 3000, 3000
chunk_sizes 1, 1464, 1464
file_chunk_sizes 1, 1464, 1464
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 9000000
shape 1, 3000, 3000
chunk_sizes 1, 1464, 1464
file_chunk_sizes 1, 1464, 1464
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 9000000
shape 1, 3000, 3000
chunk_sizes 1, 1464, 1464
file_chunk_sizes 1, 1464, 1464
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 9000000
shape 1, 3000, 3000
chunk_sizes 1, 1464, 1464
file_chunk_sizes 1, 1464, 1464
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 9000000
shape 1, 3000, 3000
chunk_sizes 1, 1464, 1464
file_chunk_sizes 1, 1464, 1464
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 9000000
shape 1, 3000, 3000
chunk_sizes 1, 1464, 1464
file_chunk_sizes 1, 1464, 1464
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 data for the Greenland Northern Drainage basin from ERS-1 for winter 1991-1992, v1.1 (June 2016 release)
project ESA Greenland Icesheet CCI
ecv ICESHEETS
institute DTU-Space, Department of Microwaves and Remote Sensing
processing_level Unspecified
product_string UNSPECIFIED
data_type IV
sensor_id AMI-SAR
platform_id ERS-1
abstract This dataset contains ice velocities for the Greenland Northern Drainage Basin for winter 1991-1992, which have been produced as part of the ESA Greenland Ice Sheet Climate Change Initiative (CCI) project. The data has been derived from intensity-tracking of ERS-1 Ice phase (3 days repeat) data aquired between 29th December 1991 and 22nd March 1992. The data are provided on a polar stereographic grid (EPSG3413: Latitude of true scale 70N, Reference Longitude 45E). 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. (Please note that in earlier versions of this product the horizontal velocities were provided as true East and North velocities). Both a single NetCDF file (including all measurements and annotation), and separate geotiff files with the velocity components are provided. The product was generated by DTU Space - Microwaves and Remote Sensing. Please note - this product was released on the Greenland Ice Sheets download page in June 2016, but an earlier product (also accidentally labelled v1.1) was available through the CCI Open Data Portal and the CEDA archive until 29th November 2016. Please now use this later v1.1 product.
publication_date 2016-11-29T19:14:40
uuid e4f39152bc50466f8887bd2a343cac93
catalog_url https://catalogue.ceda.ac.uk/uuid/e4f39152bc50466f8887bd2a343cac93
cci_project ICESHEETS