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Read this help article to learn about what ICESat-2 quick look data products are and how to find them.   What are ICESat-2 quick looks? The Advanced Topographic Altimeter System (ATLAS) on board the Ice, Cloud and land Elevation Satellite-2 (ICESat-2) collects elevation data over all surfaces spanning the world’s frozen regions, forests, lakes, urban areas, and more. ICESat-2 data has a standard latency of 30-45 days, meaning it is made available to users 30-45 days after satellite observation.
Many NSIDC data set web pages provide the ability to search and filter data with spatial and temporal contstraints using a map-based interface. This article outlines how to order NSIDC DAAC data using advanced searching and filtering.  Step 1: Go to a data set web page This article will use the MEaSUREs Greenland Ice Velocity: Selected Glacier Site Velocity Maps data set as an example, but all data sets will have a similar workflow. From https://nsidc.org/data/nsidc-0481 select the Download Data tab.  
There are two tricky steps in reading binary data in FORTRAN. First you must open the file with the proper mode, then you must correctly read and interpret the data values. There is no one correct way to do either of these steps. It often takes a fair bit of trial and error to get it right. It is therefore essential that you have test data to read with documented examples of known values.
This article describes how to geolocate North, South, and Global EASE-Grid data from the DMSP SSM/I-SSMIS Pathfinder Daily EASE-Grid Brightness Temperatures product using ENVI software. These procedures were tested with ENVI Classic 5.2 on both linux and Windows 7; other versions of ENVI may have slightly different menu options and steps. 
The GoLIVE Map Application allows users to spatially search for and download land ice velocities derived from panchromatic imagery collected from May 2013 to present. Spatial coverage of the GoLIVE data product covers all terrestrial permanent ice with an area greater than 5 km2 between 82°S to 82°N latitude. The data are provided in Network Common Data Format (NetCDF) (.nc) as geolocated grids of x and y velocity components at 300 m grid spacing with accompanying error and quality parameters.
The NSIDC Data Map Services Application Programming Interface (API) provides HTTP URLs for requesting geo-registered map images from NSIDC's geospatial database. A WMS request defines the geographic layer(s) and area of interest to be processed. The response to the request is one geo-registered map image returned as a PNG 24bit, PNG 8bit, GIF, JPEG, or JPEG-PNG that can be displayed in a browser. You can also obtain a Keyhole Markup Language (KML) image to view in Google Earth, and a Geography Markup Language (GML) XML grammar file through a WFS request.
There is considerable overlap of the SMAP radiometer footprints, or Instantaneous Fields of View (IFOVs), which are defined by the contours where the sensitivity of the antenna has fallen by 3db from its maximum. The IFOVs are spaced about 11 km apart in the along scan direction with scan lines spaced about 28 km apart near the sub-satellite track. Thus, by interpolating the values from the nearest 6 IFOVs to each 9 km EASE-Grid 2.0 cell location a product with enhanced detail is possible.
NOHRSC provides/creates the data, we just archive it. If you have questions about the model (such as how it is run) that are not available in the user guide, you have to contact NOHRSC directly.
There are two "tricks" to using this dataset with GMT: reading the data into a GMT grdfile, and knowing the projection to use when plotting data over the gridded image. First, the ASCII files have a 30-line header, then single-digit values all strung together. GMT's xyz2grd command needs the data reformatted a bit to work. This shell script will do it: #!/bin/sh infile=$1 tail +31 $infile | perl -pe 'chomp; s/(.)/$1\n/g' | xyz2grd new_data.txt -Gt.grd -ZBLa -V \ -R-12288000/12288000/-12288000/12288000 -I24000 -F
1. To see a listing of all the IceBridge data sets, visit the Data Summaries page. This page contains all the data sets grouped by instrument, and shows the available campaigns for each data set. https://nsidc.org/data/icebridge/data_summaries.html  
Note: These instructions do not apply to the Level-2B Soil Moisture data. First, you can open AMSR-E data automatically with ENVI, which handles the HDF-EOS data format by selecting the variable you want to view, for example, 6.9V_Res.1_TB. (NSIDC performed these steps with ENVI 3.6 using example parameters from Level-2A data).
First, the spatial resolution of AMSR/ADEOS-II and AMSR-E/Aqua data doubles the resolution of Scanning Multichannel Microwave Radiometer (SMMR) and Special Sensor Microwave/Imager (SSM/I) data.
OPeNDAP, the Open-source Project for a Network Data Access Protocol, is a NASA community standard DAP that provides a simple way for researchers to access and work with data over the internet. OPeNDAP's client/server software allows users to subset and reformat data using an internet browser, command line interface, or custom user interface such as a C NetCDF or Java NetCDF-compliant data analysis program. With a URL to an OPeNDAP server, users can browse data, perform subset operations, and open data directly in NetCDF-compliant software and tools like Matlab, R, IDL, and Panoply.
We recommend using the Geospatial Data Abstraction Library (GDAL) to convert GeoTIFF files into a different format. If you want to reproject to lat/lon as well, then we recommend reprojecting before converting to NetCDF (see the FAQ "How do I reproject a GeoTIFF to from polar steroegraphic to geographic lat/lon?"). Here, we outline command line and python options for using GDAL to convert GeoTIFF files into NetCDF format.
To convert HDF5 files into binary format you will need to use the h5dump utility, which is part of the HDF5 distribution available from the HDF Group. How you install HDF5 depends on your operating system. Full instructions for installing and using h5dump on Mac/Unix and Windows are provided below.
You will first need to have GDAL installed on your system before proceeding on to the following steps. NSIDC User Services is not able to provide support for installing GDAL, but we have found using a package manager such as MacPorts (https://guide.macports.org/) simplifies the installation process on a Mac. There are additional package managers available for Linux users.
This article describes the use of Geospatial Data Abstraction Library (GDAL) tools for converting SNODAS binary files to NetCDF or GeoTIFF.
AMSR-E sea ice data sets are provided in the Polar Stereographic projection. NSIDC provides gridded latitude and longitude files that give the coordinates for the center of each grid cell. The latitude and longitude files are flat-binary, so the files can be opened in ENVI. There are files for each resolution of the Polar Stereographic projection: 6.25 km, 12.5 km, and 25 km.
The following are instructions on how to import and display AMSR-E Daily Soil Moisture HDF data in ArcGIS. These instructions were tested with ArcGIS 10.0. 1.  Download the AMSR-E Daily L3 Soil Moisture HDF data file of interest to you. Note that you will not need any other files (i.e., header file) in order to open the HDF data in ArcMap.
This document describes how to import  EASE-Grid 2.0 data files into ArcGIS, using Northern Hemisphere EASE-Grid 2.0 Weekly Snow Cover and Sea Ice Extent, Version 4 data as an example. These steps were tested with ArcGIS 10 on a Windows platform.  1. Rename data file