ATLAS/ICESat-2 L3A Along Track Inland Surface Water Data, Version 5
Data set id:
ATL13
DOI: 10.5067/ATLAS/ATL13.005
There is a more recent version of these data.
Version Summary
Version Summary
Changes for this version include:
- Modified the creation of short segment length to provide additional accuracy for smaller water bodies.
- Included the analysis of the partial short segments at the very end of a transect to provide a more accurate river edge detection.
- Updated subsurface refraction correction to also include lat/lon position of bottom location.
- Updated the surface analysis to include assumed fresh and salt water indices based on water body type to provide a more accurate estimation of the attenuation coefficient.
- Added POD/PPD flags that indicate quality of input geolocation to improve the understanding of product quality.
- Replaced the Crossing Number (CN) algorithm with the Winding Number (WN) algorithm to allow the analysis over lakes previously skipped. This improved the capture of ICESat-2 observations over small and large water bodies.
- Updated the external links for the ATL13 height product validation.
- Added the count of output signal photons in full and partial non-anomalous and anomalous short segments to improve the understanding of product accuracy.
- Fixed a couple of bugs, see the user guide for more details.
Overview
This data set (ATL13) contains along-track surface water products for inland water bodies. Inland water bodies include lakes, reservoirs, rivers, bays, estuaries and a 7km near-shore buffer. Principal data products include the along-track water surface height and standard deviation, subsurface signal (532 nm) attenuation, significant wave height, wind speed, and coarse depth to bottom topography (where data permit).
Parameter(s):
Elevation
Platform(s):
ICESat-2
Sensor(s):
ATLAS
Data Format(s):
HDF5
Temporal Coverage:
- 13 October 2018 to 13 October 2022
Temporal Resolution:
- 91 day
Spatial Resolution:
- Not Specified
Spatial Reference System(s):
- WGS 84EPSG:4326
Spatial Coverage:
- N:90S:-90E:180W:-180
Blue outlined yellow areas on the map below indicate the spatial coverage for this data set.
Data Access & Tools
This data set has been retired. There is a more recent version of these data.
Documentation
User Guide
ATBDs
General Resources
Product Specification Documents
Help Articles
General Questions & FAQs
This article covers frequently asked questions about the NASA NSIDC DAAC's Earthdata cloud migration project and what it means to data users.
This short article describes the customization services available for ICESat-2 data using Earthdata Search.
The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is migrating its primary data access from its legacy, on-premises archive to the NASA Earthdata Cloud.
How to Articles
Many NSIDC DAAC data sets can be accessed using NSIDC DAAC's Data Access Tool. This tool provides the ability to search and filter data with spatial and temporal constraints using a map-based interface.Users have the option to:
This quickstart guide will walk you through the essential steps to start using the Harmony API to request subsetted files with specific spatial and temporal filters applied for select data sets.
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.
Learn the basic steps for using OpenAltimetry to browse and download ICESat-2 data products.
The NASA Earthdata Cloud is the NASA cloud-based archive of Earth observations. It is hosted by Amazon Web Services (AWS). Learn how to find and access NSIDC DAAC data directly in the cloud.
This article highlights the NSIDC DAAC data sets available with customization options and outlines a workflow for searching, ordering, and customizing data in NASA Earthdata Search. This approach is ideal for users who want to download data to their local machine.