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Systematic Independent Validation of Inner Heliospheric ModelsThis presentation is the first in a series which will provide independent validation of community models of the outer corona and inner heliosphere. In this work we establish a set of measures to be used in validating this group of models. We use these procedures to generate a comprehensive set of results from the Wang- Sheeley-Arge (WSA) model which will be used as a baseline, or reference, against which to compare all other models. We also run a test of the validation procedures by applying them to a small set of results produced by the ENLIL Magnetohydrodynamic (MHD) model. In future presentations we will validate other models currently hosted by the Community Coordinated Modeling Center(CCMC), including a comprehensive validation of the ENLIL model. The Wang-Sheeley-Arge (WSA) model is widely used to model the Solar wind, and is used by a number of agencies to predict Solar wind conditions at Earth as much as four days into the future. Because it is so important to both the research and space weather forecasting communities, it is essential that its performance be measured systematically, and independently. In this paper we offer just such an independent and systematic validation. We report skill scores for the model's predictions of wind speed and IMF polarity for a large set of Carrington rotations. The model was run in all its routinely used configurations. It ingests line of sight magnetograms. For this study we generated model results for monthly magnetograms from the National Solar Observatory (SOLIS), Mount Wilson Observatory and the GONG network, spanning the Carrington rotation range from 1650 to 2068. We compare the influence of the different magnetogram sources, performance at quiet and active times, and estimate the effect of different empirical wind speed tunings. We also consider the ability of the WSA model to identify sharp transitions in wind speed from slow to fast wind. These results will serve as a baseline against which to compare future versions of the model
Document ID
20090006626
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
MacNeice, P. J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Takakishvili, Alexandre
(Maryland Univ. Baltimore County MD, United States)
Date Acquired
August 24, 2013
Publication Date
December 14, 2008
Subject Category
Solar Physics
Meeting Information
Meeting: 2008 AGU General Assembly Conference
Location: San Francisco, CA
Country: United States
Start Date: December 14, 2008
End Date: December 19, 2008
Sponsors: American Geophysical Union
Distribution Limits
Public
Copyright
Other

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