HASDM Density Database

SET has extracted two solar cycles of thermosphere density data to create the HASDM density database. Because of its accuracy, time resolution, global scale, and information content the HASDM database densities are suitable for use as a new space weather benchmark for atmospheric expansion against which space weather events are measured. The HASDM density database now resides in a SQL database with open community access for scientific studies.

Database Portal

The information in the SQL-based SET HASDM Density Database is available from January 1, 2000 through December 31, 2019. Data records exist every 3 hours during solar cycles 23 and 24. The database has a grid size of 10° latitude × 15° longitude with 25 km altitude steps between 175–825 km.

LIMITED DATA ACCESS HERE

SET HASDM Density Database README file

Due to the server load for downloading the full database, the above link provides only a subset of data. For full database access, please send an email request to data@spacewx.com and use “SET HASDM density database access request” in the subject line.

For suggestion on how to improve the HASDM Database Portal for future updates please email science@spacewx.com

HASDM Halloween 2003 example

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HASDM 2-day plot example

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HASDM solar cycle plot example

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HASDM density error plots (2000-2019)

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HASDM ML

The statistical metrics in the SET HASDM Density Database are characterized by the META-HASDM project between West Virginia University and SET. It uses machine learning (ML) to quantify the database uses many modes of a neural network. Called HASDM ML, it characterizes the global density environment for rapid operational use, for quantification of uncertainty, and for improving ballistic coefficients for all LEO objects.

DATA ACCESS PENDING HERE

HASDM ML references

SET HASDM Density Database Credit and Citation

License Agreement, Warranty, Disclaimer

By accessing the Space Environment Technologies (SET) High Accuracy Satellite Drag Model (HASDM) Density Database portal, you agree to the following conditions. Be sure to read the following agreement before accessing these data. By entering the portal, you indicate your unconditional acceptance of the terms of this agreement. IF YOU DO NOT ACCEPT THE TERMS OF THIS AGREEMENT, DO NOT ACCESS OR USE THE SET HASDM DENSITY DATABASE PORTAL.

These data are created and distributed by Space Environment Technologies (SET). They are protected Intellectual Property by United States copyright laws and international treaty provisions. Therefore, you must treat the data like any other copyrighted material (e.g. a book or musical recording). These data in the SET HASDM Density Database are freely and publicly provided for the sole purpose of scientific research.

Commercial distribution and/or use of the data is prohibited without permission of SET. We are more than happy to allow you to distribute or use our data commercially, but you must first have a license to do so. Contact contracts@spacewx.com and request details for obtaining a commercial distribution and/or use license.

The rules of the road for use of these data are simple:

  1. scientific study use: this science use license is provided to a user for open access to the data, exclusively for scientific research use, and at no charge;
  2. derivative products generating revenue or funding opportunities: no license is provided herein for commercial use of these data; if you are interested in commercial use, SET will provide a separate commercial license and an agreement for you to do so; and
  3. publication or conference paper credit: these data were developed with SET IR&D funding; please acknowledge use of the data as “The SET HASDM density data are provided for scientific use courtesy of Space Environment Technologies.”

You may not rent, lease, or sell the data to third parties, nor may you modify, adapt, translate, reverse engineer, decompile, or disassemble the data. If you violate any part of this agreement, your right to use these data terminates automatically and you then must destroy all copies of it in your possession.

The data and related documentation are provided ‘AS IS’ and without warranty of any kind. SPACE  ENVIRONMENT TECHNOLOGIES (SET) EXPRESSLY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ANY WRITTEN OR ORAL INFORMATION OR ADVICE GIVEN BY SET, ITS AGENTS, DISTRIBUTORS, OR EMPLOYEES, SHALL NOT IN ANY WAY BE CONSTRUED AS GRANTING OR CREATING A WARRANTY. UNDER NO CIRCUMSTANCES SHALL SET BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, DAMAGES FOR LOSS OF PROFITS, INFORMATION, OR GOODWILL) THAT RESULT FROM THE USE OR INABILITY TO USE THE SOFTWARE OR RELATED DOCUMENTATION , EVEN IF SET HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

This Agreement shall be governed by the laws of the State of California. If for any reason a court of competent jurisdiction finds any provision of this Agreement, or portion thereof, to be unenforceable, that provision of the Agreement shall be enforced to the maximum extent permissible so as to effect the intent of the parties, and the remainder of this Agreement shall continue in full force and effect.

If you are a U.S. Government user, the data and documentation is provided with RESTRICTED RIGHTS as defined in Federal Acquisition Regulation 52.227.14. Use, duplication, or disclosure by the all users is subject to the restrictions above. The manufacturer is Space Environment Technologies.

All rights of Space Environment Technologies may be exercised or enforced.