NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC)

NASA IceBridge L4 Sea Ice Freeboard, Snow Depth, and Thickness 2009 and 2010 Antarctica data are now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). Greenland data for 26 March 2013, 27 March 2013, and 25 April 2013 also have been added to the data set. In addition, in the previous version of IDCSI4 data files, it was discovered that the Surface Temperature variable was blank. Surface Temperature values are now included.

NASA IceBridge-related Radiostratigraphy and Age Structure of the Greenland Ice Sheet data are now published at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC).

The NASA IceBridge ATM L2 Icessn Elevation, Slope, and Roughness (ILATM2) Version 2 data set now includes all data from 31 March 2009 to present. On 10 August 2015, Version 1 fixed-width space-delimited ASCII text files for 31 March 2009 to 08 November 2012 were replaced with Comma Separated Values (CSV) files and are now included with ILATM2 Version 2 data.

The NASA IceBridge ATM L4 Surface Elevation Rate of Change data set now includes measurements based on comparisons of earlier years with 2014. The data are available from NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). Compared dates include: 2002.11.26, 2004.11.18, 2008.10.12, 2009.10.16, 2010.11.05, 2011.10.14 and 2012.10.12.

NASA IceBridge POS/AV L1B Corrected Position and Attitude Data for Arctic 2015 are now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains georeferencing data from the Applanix 510 POS AV system flown with the Digital Mapping System (DMS) and other instruments over Greenland and Antarctica.

Data set DOI: https://doi.org/10.5067/XILTNL9F1HCR

The Making Earth System Data Records for Use in Research Environments (MEaSUREs) Program, at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), is pleased to announce that six of its data sets can now be readily geolocated by popular geospatial software packages such as GDAL and Panoply. These updated data sets include two new variables that specify x and y coordinates for the projection in meters from the origin. To obtain these data, visit the following data set landing pages:

NASA IceBridge ATM L1B Elevation and Return Strength data for 2014 Antarctica are now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains spot elevation measurements of Arctic and Antarctic sea ice, and Greenland, Antarctic Peninsula, and West Antarctic region ice surface acquired using the NASA Airborne Topographic Mapper (ATM) instrumentation.

Data set DOI: https://doi.org/10.5067/19SIM5TXKPGT

Reprocessed NASA IceBridge Sea Ice Freeboard, Snow Depth, and Thickness Arctic data are now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). The IceBridge L4 Sea Ice Freeboard, Snow Depth, and Thickness (IDCSI4) product is informally regarded as Version 2 of the IceBridge Sea Ice Freeboard, Snow Depth, and Thickness (IDCSI2) product. Adding L4 (Level-4) to the data set name more accurately represents the data processing level. Currently, the reprocessed L4 data include Arctic campaigns from 2009 to 2012.

Due to a power failure on the Satélite de Aplicaciones Científicas (SAC)-D spacecraft on 08 June 2015, data from NASA’s Aquarius instrument are no longer being produced. For more information on this event, please refer to the official NASA announcement.

NASA IceBridge ATM L2 Icessn Elevation, Slope, and Roughness data for 2014 Antarctica are now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains resampled and smoothed elevation measurements of Arctic and Antarctic sea ice, and Greenland, Antarctic Peninsula, and West Antarctic region land ice surface acquired using the NASA Airborne Topographic Mapper (ATM) instrumentation.

NASA IceBridge Narrow Swath ATM L1B Elevation and Return Strength data for 2014 Antarctica are now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains spot elevation measurements of Greenland, Arctic, and Antarctic sea ice acquired using the NASA Airborne Topographic Mapper (ATM) 4CT3 narrow scan instrumentation.

Data set DOI: https://doi.org/10.5067/CXEQS8KVIXEI

NASA IceBridge BedMachine Greenland Version 2 data are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains bed topography beneath the Greenland Ice Sheet based on mass conservation derived from airborne radar tracks and satellite radar for data collected between 1993 and 2014.

Data set DOI: https://doi.org/10.5067/AD7B0HQNSJ29

NASA IceBridge Photon Counting Lidar L1B Unclassified Geolocated Photon Elevations data for 2011 Antarctica are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains geolocated elevations captured over Antarctica using the Sigma Space photon counting lidar.

Data set DOI: https://doi.org/10.5067/U3E4Q5WWVSP9

NASA IceBridge UAF Lidar Scanner L1B Geolocated Surface Elevation Triplets data for 2014, and additional data for 2009 through 2013, are now available from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains scanning laser altimetry data points of Alaska Glaciers acquired using the airborne University of Alaska Fairbanks (UAF) Glacier Lidar system.

Data set DOI: https://doi.org/10.5067/AATE4JJ91EHC

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is pleased to announce that users can now obtain Version 6 (Collection 6) MODIS sea ice data.

The MODIS Version 6 sea ice extent and ice surface temperature algorithms and products are the same as Version 5; however, Version 6 updates to algorithm inputs—in particular, the L1B calibrated radiances, land and water mask, and cloud mask products—have improved the sea ice outputs. For information about forward and reprocessing schedules, see MODIS collection.

NASA IceBridge Sea Ice Freeboard, Snow Depth, and Thickness Quick Look evaluation product data for the 2015 time period are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set is an evaluation product containing derived geophysical data products retrieved over the Arctic sea ice cover from 2012 to 2015 using the IceBridge Airborne Topographic Mapper (ATM), Snow Radar, Digital Mapping System (DMS), and KT19 pyrometer.

The NASA IceBridge-related CryoSat-2 Sea Ice Freeboard, Thickness, and Snow Depth Quick Look evaluation product now includes data for the March 2015 time period, available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set is an experimental sea ice thickness data set containing derived geophysical data products retrieved over the Arctic sea ice cover.

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is pleased to announce the release of the Polar Stereographic Valid Ice Masks Derived from National Ice Center Monthly Sea Ice Climatologies data set. These valid ice masks provide a way to remove spurious ice caused by residual weather effects and land spillover in passive microwave data, and are derived from the National Ice Center Arctic Sea Ice Charts and Climatologies data.

IceBridge DMS L1B Geolocated and Orthorectified Images for 2014 Antarctica are now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains Level-1B imagery taken from the Digital Mapping System (DMS) over Greenland and Antarctica. See the IceBridge DMS L1B landing page for more information.

Data set DOI: https://doi.org/10.5067/OZ6VNOPMPRJ0

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is pleased to announce that the Bootstrap Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS, Version 2 data set has been updated through 31 December 2014.