Background
Global Positioning System-Radio Occultation (GPS-RO) data were evaluated by NASA’s Commercial Satellite Data Acquisition (CSDA) program and were found to provide value in a number of areas, including data assimilation and numerical weather prediction. They also enhanced atmospheric temperature and moisture content vertical profiles when combined with hyperspectral sounder information. Through the Satellite Needs Working Group (SNWG) biennial survey, agencies requested access to GPS-RO data to further explore the value of it to meet their needs.
Status: Available Now
NASA's CSDA continues to provide access to Global Navigation Satellite System-Radio Occultation (GNSS-RO) data through the current United States government End User License Agreement (EULA). The license provides scientific, non-commercial use only with a 48-hour delay for access to the Spire data.
Characteristics
| Platform | Geographic Domain |
|---|---|
| Spire | Global |
Societal Impact
GPS-RO data provide information on atmospheric structure and stability that is otherwise unavailable in remote regions, providing highly valuable inputs to regional and global numerical weather prediction models.
Resources
For more information about accessing and using commercial data, visit the following resources:
- CSDA Program
- CSDA Satellite Data Explorer
- Commercial Datasets available via NASA's CSDA program
- Spire Publications
- Commercial Satellite Data Acquisition Program Activities
Workshops and Open Meetings
| Title and Registration Link | Description | Date |
|---|---|---|
| NASA CSDA Program Vendor Focus - Spire | NASA's Earth Science Division established the Commercial Satellite Data Acquisition (CSDA) program to explore the potential of commercial satellite data for advancing the agency's Earth science research and application objectives. The program aims to identify, assess, and acquire data from commercial providers, which may offer a cost-effective means of supplementing Earth observations collected by NASA, other U.S. Government agencies, and international collaborators. During this NASA CSDA program vendor webinar, NASA speakers introduced the CSDA program. Speakers from Spire introduced the company's constellations of Earth observation satellites; showed participants how to discover, access, and work with these data; and spoke to how these data products complement NASA Earth science data holdings for research and applications. Additional discussions focused on services available to data users and how to get assistance with the NASA CSDA program's Spire datasets, services, and tools. | Nov. 19, 2024 |