Enter a date in the field below to retrieve a table linking to MDI magnetic field synoptic charts and magnetogram data for viewing or downloading.
Examples and descriptions of products are available at the bottom of this page.
NOTE: MDI Lev1.8 full-disk magnetogram, both 96m and others, have been recalibrated
and are available to download at our ftp site.
There are seventeen 3-4 Gigabyt tar files. All export requests for lev1.8 magnetograms will be calibrated
with the new process as announced in SolarNews (October 2007).
See Lev 1.8
for a recap of the changes to the calibration. The old-style magnetograms
will be available through the end of 2007 by special request.
·Latest Preliminary Synoptic Chart
·
The Daily datasets consist of one or more of the following four types of data:
96m Data Plot -
A gif of postage stamp images of the nominally 15 MDI magnetograms taken each day
with a 96 minute cadence. These plots are made from definitive data as opposed to
preliminary data, and will generally not be available until a few weeks after
data collection.
Preliminary Data -
Downloadable quick-look magnetic data files. There are typically only a few images per day. They are usually available
one or two days after data collection, and are only available through these pages until the definitive
magnetograms are generated.
fd_96m Definitive Data -
A directory listing of the magnetogram data set for the
corresponding day. Shift-click the .fits files to retrieve the
fits file containing the magnetic data. The file sequence
number indicates the 96-minute slot and corresponds to the above postage
stamps numbers. These plots may not be available until a few weeks after data collection.
Preliminary Synoptic Charts -
Synoptic charts generated each day from the EOF (preliminary) magnetograms. The
preliminary charts are averaged from the full resolutuion to a more managable 720*360;
they extend 60 degrees east of the central meridian. Gif (color), compressed postscript (B/W),
or fits versions are available for downloading. These are typically available one or two days after
data collection. Daily preliminary synoptic charts are replaced with daily Definitive Synoptic Charts as
the definitive data are processed.
MDI Daily Magnetic Field Synoptic Data
