Dataset: ESA Permafrost Climate Change Initiative (Permafrost_cci): Permafrost active layer thickness for the Northern Hemisphere, v3.0#

Dataset identifier: esacci.PERMAFROST.yr.L4.ALT.multi-sensor.multi-platform.ERA5_MODISLST_BIASCORRECTED.03-0.r1
Data store: cciodp

How to open this dataset in AVL JupyterLab  

cciodp_store = new_data_store('cciodp')
ds = cciodp_store.open_data('esacci.PERMAFROST.yr.L4.ALT.multi-sensor.multi-platform.ERA5_MODISLST_BIASCORRECTED.03-0.r1')

Bounding box map#

Bounding box map
Map tiles and data from OpenStreetMap, under the ODbL.

Basic information#

Parameter Value
Bounding box longitude (°) -180.0 to 180.0
Bounding box latitude (°) 30.0 to 90.0
Time range 1997-01-01 to 2019-12-31
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
polar_stereographic [none] [none]
ALT [none] metres

Full variable metadata#

polar_stereographic#

Field Value
grid_mapping_name polar_stereographic
straight_vertical_longitude_from_pole 0.0
false_easting 0.0
false_northing 0.0
latitude_of_projection_origin 90.0
standard_parallel 71.0
longitude_of_prime_meridian 0.0
semi_major_axis 6378137.0
inverse_flattening 298.257223563
crs_wkt PROJCS[\"WGS 84 / Arctic Polar Stereographic\",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\",71],PARAMETER[\"central_meridian\",0],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\",\"3995\"]]
esri_wkt PROJCS[\"WGS_84_Arctic_Polar_Stereographic\",GEOGCS[\"GCS_WGS_1984\",DATUM[\"D_WGS_1984\",SPHEROID[\"WGS_1984\",6378137,298.257223563]],PRIMEM[\"Greenwich\",0],UNIT[\"Degree\",0.017453292519943295]],PROJECTION[\"Stereographic_North_Pole\"],PARAMETER[\"standard_parallel_1\",71],PARAMETER[\"central_meridian\",0],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"Meter\",1]]
spatial_ref GEOGCS[\"WGS 84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS 84\",6378137,298.257223563,AUTHORITY[\"EPSG\",\"7030\"]],AUTHORITY[\"EPSG\",\"6326\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433],AUTHORITY[\"EPSG\",\"4326\"]],PROJECTION[\"Polar_Stereographic\"],PARAMETER[\"latitude_of_origin\",45],PARAMETER[\"central_meridian\",-170],PARAMETER[\"scale_factor\",1],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1,AUTHORITY[\"EPSG\",\"9001\"]]
GeoTransform -8679599.425969256 926.6254331383326 0 4120958.560533902 0 -926.6254331383326
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 permafrost_active_layer_thickness
grid_mapping polar_stereographic
units metres
conversion to metres: x*0.01
scale_factor 0.01
add_offset 0.0
valid_min 0
valid_max 10000
actual_min 0.01
actual_max 100.0
_Unsigned true
orig_data_type uint16
fill_value 0
size 916985916
shape 6, 10353, 14762
chunk_sizes 1, 1151, 1641
file_chunk_sizes 1, 1151, 1641
data_type uint16
dimensions time, y, x
file_dimensions time, y, x

Full dataset metadata#

Field Value
title ESA Permafrost Climate Change Initiative (Permafrost_cci): Permafrost active layer thickness for the Northern Hemisphere, v3.0
source ERA5 Ranalysis, MODIS MOD11A1 and MYD11A1 level 3 Collection 6, ESA CCI Land Cover dataset v1.6.1
history 2021-02-24 10:13:04
references http://cci.esa.int/Permafrost, https://doi.org/10.5194/gmd-9-523-2016
product_version 03-0
comment These data were produced at ESA CCI as part of the ESA Permafrost CCI+ project Contract No 4000123681-18-I-NB. They are part of the 2nd Climate Research Data Package release.
project Climate Change Initiative - European Space Agency
ecv PERMAFROST
institute Department of Geosciences, University of Oslo
processing_level L4
data_type ALT
abstract This dataset contains permafrost active layer thickness data produced as part of the European Space Agency's (ESA) Climate Change Initiative (CCI) Permafrost project. It forms part of the second version of their Climate Research Data Package (CRDP v2). It is derived from a thermal model driven and constrained by satellite data. Grid products of CDRP v2 are released in annual files, covering the start to the end of the Julian year. The maximum depth of seasonal thaw is provided, which corresponds to the active layer thickness. Case A: This covers the Northern Hemisphere (north of 30°) for the period 2003-2019 based on MODIS Land Surface temperature merged with downscaled ERA5 reanalysis near-surface air temperature data. Case B: This covers the Northern Hemisphere (north of 30°) for the period 1997-2002 based on downscaled ERA5 reanalysis near-surface air temperature data which are bias-corrected with the Case A product for the overlap period 2003-2019 using a pixel-specific statistics for each day of the year.
publication_date 2021-06-25T16:58:28
uuid 67a3f8c8dc914ef99f7f08eb0d997e23
catalog_url https://catalogue.ceda.ac.uk/uuid/67a3f8c8dc914ef99f7f08eb0d997e23
sensor_id multi-sensor
platform_id multi-platform
product_string ERA5_MODISLST_BIASCORRECTED
cci_project PERMAFROST