Program for using the NSIDC subsetter api for retrieving NASA Operation IceBridge, ICESat and ICESat-2 data
- NASA Earthdata Login system
- How to Access Data with Python
- NSIDC: what download options are available
- NASA Earthdata CMR API Documentation
Register with NASA Earthdata Login system and add NSIDC_DATAPOOL_OPS to your NASA Earthdata Applications
python nsidc_subset_altimetry.py --time 2009-01-01T00:00:00 2009-12-31T23:59:59 \
--bbox -50.33333 68.56667 -49.33333 69.56667 --version 034 -F NetCDF4 \
--user <username> -V -Z GLAH12- GLAH12: GLAS/ICESat L2 Antarctic and Greenland Ice Sheet Altimetry Data
- ILATM2: Airborne Topographic Mapper Icessn Elevation, Slope, and Roughness
- ILATM1B: Airborne Topographic Mapper QFIT Elevation
- ILVIS1B: Land, Vegetation and Ice Sensor Geolocated Return Energy Waveforms
- ILVIS2: Geolocated Land, Vegetation and Ice Sensor Surface Elevation Product
- ATL03: Global Geolocated Photon Data
- ATL04: Normalized Relative Backscatter
- ATL06: Land Ice Height
- ATL07: Sea Ice Height
- ATL08: Land and Vegetation Height
- ATL09: Atmospheric Layer Characteristics
- ATL10: Sea Ice Freeboard
- ATL12: Ocean Surface Height
- ATL13: Inland Water Surface Height
--help: list the command line options
-D X, --directory=X: working data directory
-U X, --user=X: username for NASA Earthdata Login
-N X, --netrc=X: Path to .netrc file for authentication
--version: version of the dataset to use
-B X, --bbox=X: Bounding box (lonmin,latmin,lonmax,latmax)
-P X, --polygon=X: Georeferenced file containing a set of polygons
-T X, --time=X: Time range (comma-separated start and end)
-F X, --format=X: Output data format (TABULAR_ASCII, NetCDF4)
-M X, --mode=X: Local permissions mode of the files processed
-V, --verbose: Verbose output of processing
-Z, --unzip: Unzip dataset from NSIDC subsetting service
Can include a georeferenced file using the --polygon option.
Presently subsets to the convex hull of the internal polygons.
polygon.py: Reads polygons from GeoJSON, kml/kmz or ESRI shapefile files
- numpy: Scientific Computing Tools For Python
- gdal: Pythonic interface to the Geospatial Data Abstraction Library (GDAL)
- shapely: PostGIS-ish operations outside a database context for Python
- fiona: Python wrapper for vector data access functions from the OGR library
- geopandas: Python tools for geographic data
- pyproj: Python interface to PROJ library
- lxml: processing XML and HTML in Python
- future: Compatibility layer between Python 2 and Python 3
The program homepage is:
https://github.com/tsutterley/nsidc-subsetter
A zip archive of the latest version is available directly at:
https://github.com/tsutterley/nsidc-subsetter/archive/master.zip
This program is not sponsored or maintained by the Universities Space Research Association (USRA), the National Snow and Ice Data Center (NSIDC) or NASA. This is a work in progress and will be updated with the release of NASA ICESat-2 data. It is provided here for your convenience but with no guarantees whatsoever.