NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Obtaining Reliable Predictions of Terrestrial Energy Coupling From Real-Time Solar Wind MeasurementsMeasurements of the interplanetary magnetic field (IMF) from the ACE (Advanced Composition Explorer), Wind, IMP-8 (Interplanetary Monitoring Platform), and Geotail spacecraft have revealed that the IMF variations are contained in phase planes that are tilted with respect to the propagation direction, resulting in continuously variable changes in propagation times between spacecraft, and therefore, to the Earth. Techniques for using 'minimum variance analysis' have been developed in order to be able to measure the phase front tilt angles, and better predict the actual propagation times from the L1 orbit to the Earth, using only the real-time IMF measurements from one spacecraft. The use of empirical models with the IMF measurements at L1 from ACE (or future satellites) for predicting 'space weather' effects has also been demonstrated.
Document ID
20020034466
Acquisition Source
Goddard Space Flight Center
Document Type
Contractor or Grantee Report
Authors
Weimer, Daniel R. (Mission Research Corp. Santa Barbara, CA United States)
Date Acquired
September 7, 2013
Publication Date
March 14, 2002
Subject Category
Solar Physics
Report/Patent Number
C-44047-Final
Funding Number(s)
CONTRACT_GRANT: NASW-99004
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available