
ACE Team Information: Coordinated Observations of Solar
Disturbances
Triage
If you want to do a preliminary assessment of a solar-terrestrial event,
I would recommend first checking the
LASCO CME list, started by Chris
St. Cyr and currently maintained by Simon Plunkett:
The LASCO CME list usually gives the time of the CME as first seen in the
LASCO C2 coronagraph (occasionally LASCO C1 or EIT times are used). If you
want a better idea of timing, you might want to check the
GOES X-ray Flux which
might show an obvious X-ray flux increase.
You can then try to see if you can dredge up a movie
of the event. These are automatically generated, so they're not of
particularly high quality. Still, they help with a preliminary assessment.
If you've decided you want to get into some serious data analysis, you can
first check to see if the event has been targetted by one of the groups which
regularly conduct Campaigns and Coordinated Events.
If you find the event, congratulations, the work has been done for you. If
you haven't found your event, you have three choices.
1. You can contact the instrument team to see if anyone is analyzing
the event. This can be difficult - often, the LASCO and EIT Principal
Investigators are notorious for not answering email. Since they are most
likely to find out about this website through electronic media, I can say
this with almost complete impunity. For starters, you can either contact
the Co-I of your choice (depending on which data set you're seeking) or
you can send me an email
Barbara.Thompson@gsfc.nasa.gov and I'll put you in touch with the
people I think would be best to contact. Often, this means that you'll end
up contacting the instrument team's PI after all, but at least it won't take
you much time to find this out.
Movies
Data Access
- The
SOHO Main Catalog provides easy access to multiple SOHO data sets. You
can either access the data through the SOHO catalog, or through the
instrument data sites.
- SOHO/MDI (Michelson-Doppler Imager)
provides full-disk and high-resolution magnetograms.
- Data from the three coronagraphs making up
SOHO/LASCO (Large Angle
Spectrometric Coronagraph) can be accessed via the web. Please review the
"Retrieving LASCO
Data" page, which requests that you register your research efforts with the
Principal Investigator.
- The SOHO/EIT (Extreme
Ultraviolet Imaging Telescope) takes images in four EUV wavelengths.
The EIT Team requests that anyone interested in using EIT data fill out
a Data Analysis
Proposal, so the team can be aware of possible overlapping research
efforts.
- The
SOHO Synoptic Data Base contains survey images (usually the cadence is
about 1 per day) from supplementary observatories and spacecraft around
the world. It's a good way to take a peek at a few gif's and get an idea
of what the event looks like in multiple wavelengths.
- The
SOHO Summary Database contains images from SOHO instruments (the
Synoptic Database contains non-SOHO data), not all of the data, but they're
in gif format so they're easy to take a look at.
Campaigns and Coordinated Events

This page was created 1998 June 30.
Last revised 1998 June 30
Author and Curator:
Barbara J. Thompson
Responsible NASA Official:
Barbara J. Thompson
Code 612.1