Related Links | Frequently Asked Questions | Community Feedback | Downloads | Sitemap
CCMC Home | CCMC Stakeholders | Our Team | Publications | Meetings and Workshops | Concept of Operations
Models At A Glance | ModelWeb Catalog and Archive
Request Procedures | Generate Input Data Files & Parameters | Movies on Request | About the Run Process | Publications Policy
Search run database | Publications policy | Special events | Kameleon Software | Space Weather Explorer | Request run output
Instant Model Run
Forecasting Support tools | iSWA | DONKI | Mission Support | Experimental Real Time Simulations | Operational Geospace Model Validations
GEM Challenge | CEDAR ETI Challenge | GEM-CEDAR Challenge | SHINE Challenge | CME Arrival Time Scoreboard | Flare Scoreboard | SEP Scoreboard
Magnetosphere Modules | Student Research Contest | CCMC Tutorial at CEDAR | SW REDI
Missions near Earth/in Earth-orbit | MMS | Van Allen Probes | THEMIS | MESSENGER | STEREO | Spitzer | MAVEN | MSL | Dawn | Kepler | EPOXI | Juno | CASSINI | Voyager | New Horizons | Sounding Rockets | International
Research Community Support | CCMC Workshops | NASA Robotic Mission Operator Workshops | LWS Support | Exo-CCMC | DREAM2 Support | HELCATS Support

Potential Field Source Surface Model

CCMC Services available for PFSS
Request a Run
View Request Results
View Real Time Run
View iSWA cygnet for this model

Model Developer(s)
J. Luhmann et al.
SSL/UC Berkeley

Model Description
Potential Field Source Surface Models provide an approximate description of the solar coronal magnetic field based on observed photospheric fields (magnetograms). They were initially developed by Altschuler and Newkirk (Sol. Phys. 9, 131, 1969) and Schatten et al. (Sol. Phys. 6, 442, 1969), and later refined by Hoeksema (1984 Thesis, Stanford University) and Wang and Sheeley (ApJ 392, 310, 1992).

The Potential Field Surface Model calculates the magnetic field of the solar corona using observations of the magnetic field at the sun's surface. This code was written by Janet Luhmann. The model calculates the magnetic field of the corona from the radius of the sun to the source surface radius assuming that there are no currents in this region. The magnetic field in this case satisfies curl B = 0. The source surface radius is the outer boundary and is set by the user. The range of acceptable values is 1.6 - 3.25 solar radii with 2.5 the recommended value.

The code uses spherical harmonic coefficients calculated by Wilcox Solar Observatory using observed photospheric fields (magnetograms) as input. The inner boundary condition assumes that the magnetic field of the sun is nearly radial. At the source surface radius, the magnetic field is assumed to be radial.

Model Input
Spherical harmonic coefficients for specific date or Carrington rotation and source surface radius.

Model Output
Magnetic field of the sun from one solar radius to the source surface radius.

References and relevant publications

CCMC Contact(s)


Developer Contact(s)

National Aeronautics and Space Administration Air Force Materiel Command Air Force Office of Scientific Research Air Force Research Laboratory Air Force Weather Agency NOAA Space Environment Center National Science Foundation Office of Naval Research

| | Privacy, Security Notices

CCMC logo designed by artist Nana Bagdavadze