ENLIL model/ENLIL model + Cone model
| Model Description Cone model description Model Authors/Developers Model Input/Output Relevant Publications/Links Model Documentation Run Request Procedures Model Contacts |
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Model Versions used: 2.5 and 2.3a (for cone model runs)
Model Description:
ENLIL is a time-dependent 3D MHD model of the heliosphere. It solves for plasma mass,
momentum and energy density, and magnetic field, using a Flux-Corrected-Transport (FCT)
algorithm. Its inner radial boundary is located beyond the sonic point, typically at 21.5 or 30
solar radii. It can accept boundary condition information from either the WSA or MAS models.
The outer radial boundary can be adjusted to include planets or spacecraft of interest
(eg 2 AU to include both Earth and Mars, 5 AU to include Ulysses, 10 AU to include Cassini).
It covers 60 degrees north to 60 degrees south in latitude and 360 degrees in azimuth.
ENLIL + Cone Model Description:
ENLIL cone model forecasts CME propagation from the ENLIL inner boundary
(which is usually at 21.5 Rs) to the point
of interest. The cone model is based on the idea that
close to the Sun CME propagates with constant angular and
radial velocity, and so has the shape of a cone.
ENLIL takes the cone model input parameters at its inner boundary.
These input parameters are the following:
1. Start date (yyyy-mm-dd).
2. Start time (hh-mm)
This is the moment of time (UT) when the CME reaches ENLIL
inner boundary.
3. Cone latitude (deg).
Co-latitude of the cone axis (angle "Lat" in the Figure 1)
4. Cone longitude (deg).
Longitude of the CME cone axis (angle"Long" in the Figure 1,
(note Long=180 degrees is in the Earthward direction )
5. Cone radius (deg).
Angular width of the cone (angle "rad" in the Figure 1).
6. Radial velocity (km/s) at the ENLIL inner boundary.
You can find detailed description of the cone model e.g. in the following paper:
Relevant Publications:
Xie et al., JGR, vol 109, A03109; doi:10.1029/2003JA010226, 2004.
Model Authors/Developers:
D. Odstrcil
University of Boulder, Colorado
Boulder, Colorado
- Model can accept boundary condition information from either the WSA or MAS models.
- General description of ENLIL model
- Description of the data structure and organization in the ENLIL
- General description of Solar wind, time description systems & coordinate systems used and more.
This file also contains instructions for installation.
CCMC Contact Persons:
Dr. Peter MacNeice
301-286-2061
301-286-4521
