ATLAS/ICESat-2 L1B Converted Telemetry Data, Version 3
Data set id:
ATL02
DOI: 10.5067/ATLAS/ATL02.003
There is a more recent version of these data.
Version Summary
Version Summary
Changes for this version include:
- Improved/fixed a number of reported QA parameters to better reflect phenomena of concern.
- Corrected a math error in the ATBD for ATL02 (Equation 5-13) and updated the corresponding receiver return sensitivity code. This calculation interpolates transmit/receive misalignment between AMCS offset updates.
- Addressed several documentation issues within the ATL02 file metadata related to units and descriptions.
- Removed the temperature parameter from /ancillary_data/calibrations/nominal_rx_sensitivity. As the nominal receiver sensitivity calibration is no longer indexed by temperature, this parameter has become irrelevant.
- Added a patch to detect and correct anomalous transmit fine count swap issues
- Corrected a code error such that the temperature used for CAL-47 now references the correct thermistor.
- Corrected for a coarse count issue that occurs simultaneously with the fine count swap issue described in (5) (above). The new method subtracts 1 from the coarse count if the start marker is equal to 1.
Overview
This data set (ATL02) contains science unit-converted, time-ordered telemetry data, calibrated for instrument effects, downlinked from the Advanced Topographic Laser Altimeter System (ATLAS) instrument on board the Ice, Cloud and land Elevation Satellite-2 (ICESat-2) observatory. The data are used by the ATLAS/ICESat-2 Science Investigator-led Processing System (SIPS) for system–level, quality control analysis and as source data for ATLAS/ICESat-2 Level-2 products and the Precision Orbit Determination (POD) and Precision Pointing Determination (PPD) computations.
Parameter(s):
ENGINEERING TELEMETRY ANCILLARY DATA
Platform(s):
ICESat-2
Sensor(s):
ATLAS
Data Format(s):
HDF5
Temporal Coverage:
13 October 2018 to 11 November 2020
Temporal Resolution:
- Not applicable
Spatial Resolution:
- not applicable
- not applicable
Spatial Reference System(s):
WGS 84
EPSG:4326
Spatial Coverage:
N:
90
S:
-90
E:
180
W:
-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.
How to Articles
Many NSIDC DAAC data sets can be accessed using the 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
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.
This guide will provide an overview of the altimetry measurements and data sets across the missions, as well as a guide for accessing the data through NASA Earthdata Search and programmatically using an Application Programming Interface (API).
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.
All data from the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) is directly accessible through our HTTPS file system using Wget or curl. This article provides basic command line instructions for accessing data using this method.
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.
This webinar introduces the ICESat-2 mission and shows you how to explore, access and customize ICESat-2 data with the OpenAltimetry application, using NSIDC DAAC tools, and shows you how to subset, reformat and analyze the data using Python.