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[ official version ] [ test version ] [ Japanese version ] of HMI daily-MHD model.

The global solar corona and solar wind
derived with time-dependent three-dimensional MHD simulation
using SDO/HMI magnetic field synoptic data



Please visit SOI/SOHO/MDI website and HMI website, for more information about instruments, data, and the status of the data processing pipeline.

Definitive data
Definitive input synoptic or synchronic maps of magnetic field magnetic field and MHD output data are generated when all calibrations are made, usually several weeks after observations.
definitive daily data:
   magnetic field map and 3D MHD results
definitive once-a-Carrington-Rotation data:
   magnetic field map and 3D MHD results

Input NRT Synchronic-Frame Map of Solar-Surface Magnetic Field : Around 14:00 UT (7 or 8AM PT) everyday, the latest daily-updated synoptic map will be generated in JSOC data pipeline.
The daily-updated map are found at http://jsoc.stanford.edu/ajax/lookdata.html?ds=hmi.Mrdailysynframe_720s_nrt
synoptic frame map
HMI daily synoptic map
latest map in FITS format (∼ 20MB)
and WSO data format (∼ 21kB).
To-date mpeg movie (*)
PFSS model plot
PFSS with HMI daily map
left : field lines and bases of open field
right: zero-Br contour surfaces.
To-date mpeg movie (*)
PFSS (without Br-offset)
PFSS with HMI daily map
left : field lines and bases of open field
right: zero-Br contour surfaces.
To-date mpeg movie (*)
* Not regularly generated.

At 9 AM PT, the latest near-real-time data is loaded, processed and fed to the coronal MHD model and PFSS calculation code, then the left plot above is replaced with the latest one. Around 10 AM PT, a PFSS calculation of moderate spatial resolution is completed and the right plot box above is updated. Around 2 to 4 PM PT, a daily MHD run (low-resolution, about 5-degrees in latitude and longitude) is completed, then the plots below are updated. The observational images from the SOHO and SDO are updated at around 12UT (around 4 or 5AM, PT).
*) The schedule are subject to change, depending on status of the JSOC data process. Elapsed time of MHD runs depends on the CFL condition (i.e., the largest value of the magnetic field strength in an input synoptic map data).

Daily NRT Simulation Data (with choice O; the density and temperature are fixed at the base of the open-field coronal hole).
Simulation data generated in automated JSOC data pipeline are found at http://jsoc.stanford.edu/ajax/lookdata.html?ds=hmi.MHDcorona_daily_nrt.

plots made: Sun Jul 5 20:50:04 UTC 2015 (Sun Jul 5 13:50:04 PDT 2015)
lat-lon map at various distances
click here to enlarge.
line-of-sight integration
of coronal density
daily MHD corona map daily MHD-derived LoS coronal density
    recent 27 plots (AniS java applet animation)
    recent 27 plots (mpeg movie)
    year-to-date (mpeg. *not regularly generated)
    recent 27 plots(AniS)
    recent 27 plots(mpeg)
    year-to-date(mpeg)
Latest data files   *Please contact us for details of the simulation and data.
   maps at 30 Rs: Vr (in km/s) and Br (in nT) in CSV (Comma Separated Values; plain text) format
   a cubic data containing all eight MHD variables : click here (FITS format, approx. 6.5MB).
The size of this cubic data is 32 x 64 x 640. The first 80-layer block, (*,*,0:79), is for the density (in count/cc), from 1.01 Rs to 4.96 Rs with a fixed equi-radius interval of 0.05Rs, and the second to eighth 80-layer blocks are respectively for the temperature (in MK), V_r, V_theta, V_phi (in km/s), B_r, B_theta and B_phi (in Gauss). Please mind that the format and specifications of this FITS file are different from those at JSOC database.
Summary mpeg movies:
   with SDO/HMI data, since July 1. 2011.
   1st half of 2015 :  lat.-long. map Corona and CH-base
   2nd half of 2014 :  lat.-long. map Corona and CH-base
   1st half of 2014 :  lat.-long. map Corona and CH-base
   2nd half of 2013 :  lat.-long. map Corona and CH-base
   1st half of 2013 :  lat.-long. map Corona and CH-base
   2nd half of 2012 :  lat.-long. map Corona and CH-base
   1st half of 2012 :  lat.-long. map Corona and CH-base
   2nd half of 2011 :  lat.-long. map Corona and CH-base
   transition phase, from MDI to HMI data as input. * MHD results were mostly unchanged, with very few data updates.
   1st half of 2011 :  lat.-long. map Corona and CH-base
   with SOHO/MDI data, from Feb. 08, 2008 Dec.31, 2010
   2nd half of 2010 :  lat.-long. map Corona and CH-base
   1st half of 2010 :  lat.-long. map Corona and CH-base
   2nd half of 2009 :  lat.-long. map Corona and CH-base
   1st half of 2009 :  lat.-long. map (30MB)Corona and CH-base (2MB)
   part of 2008 :  lat.-long. map (50MB)Corona and CH-base (2.5MB)
(* without polar-field correction for the first 21 days, then
with polar-field correction)
Observations / Measurements
image/data fetched: Mon Jul 6 11:30:13 UTC 2015 (Mon Jul 6 04:30:13 PDT 2015)
HMI daily synoptic map SDO/HMI    SDO/HMI
C2 and Kcor MHD-0      SDO/AIA    PFSS with HMI daily map


Modification / change / history Description

K. Hayashi
last (minor) modification: May 6, 2012
The last major update/modification: Jan.15, 2012
The first simulation plots appeared on Feb. 8, 2008
The first version of this page was created on Feb. 1., 2008