Abstract
Abstract. This paper gives a brief overview over the International
Reference Ionosphere (IRI) project and model. IRI is recognized as the
official standard for the ionosphere by the International Standardization
Organization (ISO), the International Union of Radio Science (URSI), the
Committee on Space Research (COSPAR), and the European Cooperation for Space
Standardization (ECCS). Of great importance are the external drivers of the
model that help IRI to represent ionospheric conditions as realistically as
possible. The paper discusses the drivers currently used presents recent
improvements and changes. Besides the standard solar, magnetic, and
ionospheric indices the paper also reports on the adjustment of the model
with data and equivalent indices and on the progress towards a Real-Time IRI
using data assimilation. IRI has been widely validated with many different
data sources and has fared very well in community wide assessment studies.
We present some of these studies and document the wide usages of the model
in the scientific literature. Finally, we present an outlook on things to
come in IRI-2018 and thereafter.
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