Dataset: ESA Greenland Ice Sheet Climate Change Initiative (Greenland_Ice_Sheet_cci): Ice Velocity time series for the Helheim Glacier for 2015-2017 from Sentinel-1 data, v1.1#

Dataset identifier: esacci.ICESHEETS.unspecified.L4.IV.SAR-C-(Sentinel-1).multi-platform.UNSPECIFIED.1-1.greenland_s1_250m_20150610_20170321_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.L4.IV.SAR-C-(Sentinel-1).multi-platform.UNSPECIFIED.1-1.greenland_s1_250m_20150610_20170321_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 2015-06-09 to 2017-03-21

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
alt Height above WGS84 m
land_ice_surface_east_velocity [none] m/day
land_ice_surface_north_velocity [none] m/day

Full variable metadata#

crs#

Field Value
grid_mapping_name polar_stereographic
standard_parallel 70.0
straight_vertical_longitude_from_pole -45.0
false_easting 0.0
false_northing 0.0
unit metre
latitude_of_projection_origin 90.0
spatial_ref PROJCS[\"WGS 84 / NSIDC Sea Ice Polar Stereographic North\",GEOGCS[\"WGS 84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS 84\",6378137,298.257223563,AUTHORITY[\"EPSG\",\"7030\"]],AUTHORITY[\"EPSG\",\"6326\"]],PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"4326\"]],PROJECTION[\"Polar_Stereographic\"],PARAMETER[\"latitude_of_origin\",70],PARAMETER[\"central_meridian\",-45],PARAMETER[\"scale_factor\",1],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1,AUTHORITY[\"EPSG\",\"9001\"]],AXIS[\"X\",EAST],AXIS[\"Y\",NORTH],AUTHORITY[\"EPSG\",\"3413\"]]
orig_data_type int32
fill_value 9223372036854775807
size 1
shape 1
chunk_sizes 1
file_chunk_sizes 1
data_type int64
dimensions
file_dimensions

alt#

Field Value
standard_name height
long_name Height above WGS84
units m
description Heights (WGS84 used for velocity projection)
source External ( Greenland Ice Mapping Project (GIMP) 250m DEM )
grid_mapping crs
coordinates y x
orig_data_type int16
fill_value -9999
size 381999
shape 669, 571
chunk_sizes 669, 571
file_chunk_sizes 669, 571
data_type int16
dimensions y, x
file_dimensions y, x

land_ice_surface_east_velocity#

Field Value
description eastwards ice velocity
grid_mapping crs
coordinates time y x
cell_methods spatial filter (smooth: median 3x3, gapfill: planefit 5,5)
units m/day
orig_data_type float32
fill_value 3.4028235e+38
size 27121929
shape 71, 669, 571
chunk_sizes 18, 223, 191
file_chunk_sizes 18, 223, 191
data_type float32
dimensions time, y, x
file_dimensions time, y, x

land_ice_surface_north_velocity#

Field Value
units m/day
description northwards ice velocity
grid_mapping crs
coordinates time y x
cell_methods spatial filter (smooth: median 3x3, gapfill: planefit 5,5)
orig_data_type float32
fill_value 3.4028235e+38
size 27121929
shape 71, 669, 571
chunk_sizes 18, 223, 191
file_chunk_sizes 18, 223, 191
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 for 2015-2017 from Sentinel-1 data, v1.1
project ESA Greenland Ice Sheet CCI
ecv ICESHEETS
institute ENVironmental Earth Observation IT GmbH
processing_level L4
product_string UNSPECIFIED
data_type IV
sensor_id SAR-C-(Sentinel-1)
abstract This dataset contains a time series of ice velocities for the Helheim Glacier in Greenland derived from Sentinel-1 SAR (Synthetic Aperture Radar) data acquired between between June 2015 and March 2017. It has been produced by the ESA Greenland Ice Sheet Climate Change Initiative (CCI) project. Data files are delivered in NetCDF format at 250m grid spacing in North Polar Stereographic projection (EPSG: 3413). The horizontal velocity components are provided in true meters per day, towards the EASTING(x) and NORTHING(y) directions of the grid.
publication_date 2019-02-04T16:05:18
uuid 0e289294f2c141bca545cd9d7fcb62d0
catalog_url https://catalogue.ceda.ac.uk/uuid/0e289294f2c141bca545cd9d7fcb62d0
platform_id multi-platform
cci_project ICESHEETS