Data Announcements

NSIDC Polaris Search and Order being Retired 15 February 2017

2 February 2017

THE NSIDC Polaris Search and Order tool will be retired on 15 February 2017. Please contact NSIDC User Services via email: nsidc@nsidc.org with questions.

New NASA ICESat/GLAS Altimetry Release-34 HDF5 Data

23 October 2014

ICESat/GLAS Altimetry Release-34 HDF5 data are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) for products GLA05, GLA06, and GLA12-15. See the ICESat/GLAS Data Releases page for more information.

GLAH05 DOI:10.5067/ICESAT/GLAS/DATA105
GLAH06 DOI:10.5067/ICESAT/GLAS/DATA106
GLAH12 DOI:10.5067/ICESAT/GLAS/DATA205
GLAH13 DOI:10.5067/ICESAT/GLAS/DATA206
GLAH14 DOI:10.5067/ICESAT/GLAS/DATA207
GLAH15 DOI:10.5067/ICESAT/GLAS/DATA208

NASA ICESat/GLAS GLAH01 Reprocessed Data

23 October 2014

Reprocessed NASA ICESat/GLAS GLAH01 HDF5 data are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). GLAH01 reprocessing was conducted to correct the format of the d_4nsBgMean parameter changing it from counts to volts. See the ICESat/GLAS Data Releases page for more information.  DOI:/10.5067/ICESAT/GLAS/DATA101.

New NASA ICESat/GLAS Altimetry Release-34 L2E and L2F Binary Data

11 August 2014

ICESat/GLAS Altimetry Release-34 binary format data for Laser 2E and 2F campaigns are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) for products GLA05, GLA06, and GLA12-15. See the ICESat/GLAS Data Releases page for more information.

New NASA ICESat/GLAS Altimetry Release-34 L3H, L3I, L3J, L3K, and L2D Binary Data

6 August 2014

ICESat/GLAS Altimetry Release-34 binary format data for Laser 3H, 3I, 3J, 3K, and 2D campaigns are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) for products GLA05, GLA06, and GLA12-15. See the ICESat/GLAS Data Releases page for more information.

New ICESat/GLAS Altimetry Release-34 L3E, L3F, and L3G Binary Data

25 July 2014

NASA ICESat/GLAS Altimetry Release-34 binary format data for Laser 3E, 3F, and 3G campaigns are now available for products GLA05, GLA06, and GLA12-15. See the ICESat/GLAS Data Releases page for more information.

New ICESat/GLAS Altimetry Release-34 L3B, L3C, and L3D Binary Data

16 July 2014

NASA ICESat/GLAS Altimetry Release-34 binary format data for Laser 3B, 3C, and 3D  campaigns are now available for products GLA05, GLA06, and GLA12-15. See the ICESat/GLAS Data Releases page for more information.

New ICESat/GLAS Altimetry Release-34 L2C and L3A Binary Data

3 July 2014

NASA ICESat/GLAS Altimetry Release-34 binary format data for Laser 2C and 3A campaigns are now available for products GLA05, GLA06, and GLA12-15. See the ICESat/GLAS Data Releases page for more information.

New ICESat/GLAS Altimetry Release-34 L1A, L1B, L2A, and L2B Binary Data

24 June 2014

NASA ICESat/GLAS Altimetry Release-34 binary format data for Laser 1A, 1B, 2A, and 2B campaigns are now available for products GLA05, GLA06, and GLA12-15. See the ICESat/GLAS Data Releases page for more information.

NSIDC Web Site and FTP Server Down for System Maintenance

29 May 2014

From 4:30 p.m. Wednesday, June 04 until noon Friday, June 06  (USA Mountain Time), our Web site and FTP server will be unavailable due to system maintenance. We apologize for any inconvenience this may cause you.

Updated Arctic Sea Ice Freeboard and Thickness Now Available from NSIDC

15 April 2014

The Arctic Sea Ice Freeboard and Thickness data set has been updated to add Lasers 1, 2A, 2B, 2C, 3A, 3B, 3C, 3J, and 3K.  The update also includes GeoTIFF grids. For documentation, and to access the data, see the Arctic Sea Ice Freeboard and Thickness catalog page.

Data FTP URL Change

22 January 2014

Notice to Users of AMSR-E, GLAS, IceBridge, MODIS and NISE Data.

The FTP location for accessing AMSR-E, GLAS, IceBridge, MODIS, and NISE data changed in October from n4ftl01u.ecs.nasa.gov to n5eil01u.ecs.nsidc.org. Redirects that were previously put in place for users connecting to n4ftl01u.ecs.nasa.gov were removed. Users connecting to our FTP through a script or through an FTP download program should change the host name to n5eil01u.ecs.nasa.gov in order to continue retrieving data. Please contact NSIDC User Services with any questions.

GLAS Elevation Correction Files Available

18 June 2013

On 31 January 2013 the ICESat Project Science Team announced that a correction to ICESat surface elevation data products is necessary due to an error in the range determination from transmit-pulse reference selection (centroid vs. Gaussian, G-C).

Correction files and correction programs in FORTRAN and IDL are available via FTP. For more information about the findings and corrections please see Correction to ICESat Data Product Surface Elevations.

If you have questions please contact nsidc@nsidc.org.

Correction to ICESat Data Product Surface Elevations

1 February 2013

The ICESat Project Science Team announced that a correction to ICESat surface elevation data products is necessary due to an error in the range determination from transmit-pulse reference selection (centroid vs. Gaussian, G-C). The following products are affected by this finding: GLA06 (global elevation), GLA12 (ice sheet), GLA13 (sea ice), and GLA15 (ocean). GLA14 users who use the range increment for the alternative Gaussian-fitted peaks may want to also use the correction.

The ICESat Project will provide the correction files to the NSIDC DAAC, which can be applied directly to the surface elevations on a shot-by-shot basis for each of the ICESat laser campaigns.

For details, see the Correction to ICESat Data Product Surface Elevations Web page. For questions and concerns, please contact NSIDC User Services.

ICESat/GLAS Altimetry Release-33 HDF5 Data Now Available at NSIDC

26 December 2012

ICESat/GLAS Altimetry Release-33 HDF5 format data products are now available at NSIDC. See the ICESat/GLAS Data Releases Web page at http://nsidc.org/data/icesat/data.html#glas-hdf5 for more information.

GLAS Release 31 Data No Longer Distributed by NSIDC

6 July 2012

NSIDC is no longer distributing GLAS Release 31 data. GLAS Release 33 data continues to be distributed from our long term archive. Descriptions of Release 33 and Release 31 can be found on the NSIDC Data Releases and Past Data Releases Web pages. For more information about GLAS data products, see the ICESat/GLAS Data Web site. For questions and concerns, please contact NSIDC User Services.

Additional ICESat/GLAS Release-29 Data Available

18 February 2009

Release-29 data for the Laser 2B campaign (17 February 2004 to 21 March 2004) are now available for the following products: GLA01 to GLA05 and GLA07 to GLA11.

Additional ICESat/GLAS Release-29 Data Available

22 December 2008

ICESat/GLAS Release-29 data for the Laser 1A (20 February 2003 to 21 March 2003) and 1B (21 March 2003 to 29 March 2003) campaigns are now available for the following products: GLA01 to GLA05 and GLA07 to GLA09.

ICESat/GLAS RELEASE-29 DATA NOW AVAILABLE: Laser 3J

18 November 2008

NSIDC has released new ICESat/GLAS data. Release-29 data for the Laser 3J time period (17 February 2008 to 21 March 2008) are available for the following products: GLA01 – GLA09 and GLA12 – GLA15. Release-29 incorporates significant and extensive changes to the atmosphere processing, additions and corrections to the waveform and elevation processing, and the incorporation of new tide models. See the ICESat/GLAS Data Releases Web site at http://nsidc.org/data/icesat/data_releases.html for more information and a more complete description of this new release.

ICESat RELEASE-29 DATA NOW AVAIABLE: Laser 3I

14 October 2008

Release-29 data for the Laser 3I time period (02 October 2007 to 05 November 2007) are available for the following products: GLA01 – GLA09 and GLA12 – GLA15. Release-29 incorporates significant and extensive changes to the atmosphere processing, additions and corrections to the waveform and elevation processing, and the incorporation of new tide models.