ENLIL Solar Wind Prediction - Streams at Earth
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Three different predictions of the solar wind stream at Earth.
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Date (in UTC) at the top center corresponds to the beginning of
the predictive computation.
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Plots from top to down show the prediction by:
(1) numerical simulation (results at Earth are shown together with
values at nearby grid points shown by black lines);
(2) recurrency of the ACE older observations (assuming that values
are the same 27.2753 day before); and
(3) using the STEREO_B observations adjusted to take into account
different longitude (assuming a 27.2753-day recurrency) and radius
(assuming the solar wind speed of 450 km/s).
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Blue color shows the prediction at Earth and red color shows
the actual observation by the ACE spacecraft at Earth.
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Vertical black line indicates beginning of the new prediction
which is at the beginning of the calendar date (UTC).
Note that a single, corotating map is used to drive the heliospheric
simulations for -/+ day span about that beginning.
Values to the left (right) from the vertical black line thus
represents "historic" ("prediction") results.
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Vertical black dashed line indicates date of the latest GONG
observation file used to calculate WSA input data.
Note that the heliospheric computation uses available WSA
input data collected during the first day since the
beginning of the heliospheric computations.
This is a page in progress.
Please send questions and comments to
Dusan.Odstrcil@nasa.gov
from
George Mason University/CDS/Space Weather Laboratory
and
NASA/GSFC/Space Weather Laboratory
.
Acknowledgments: This work has been supported in part by
AFOSR/MURI, NASA/LWS, NASA/STEREO, NSF/CISM, and NSF/SHINE projects.
Last update: 2008-03-23
