  We perform a validation study of the latest version of the Alfv\'{e}n Wave
Solar atmosphere Model (AWSoM) within the Space Weather Modeling Framework
(SWMF). To do so, we compare the simulation results of the model with a
comprehensive suite of observations for Carrington rotations representative of
the solar minimum conditions extending from the solar corona to the heliosphere
up to the Earth. In the low corona ($r < 1.25$ \Rs), we compare with EUV images
from both STEREO-A/EUVI and SDO/AIA and to three-dimensional (3-D) tomographic
reconstructions of the electron temperature and density based on these same
data. We also compare the model to tomographic reconstructions of the electron
density from SOHO/LASCO observations ($2.55 < r < 6.0$\Rs). In the heliosphere,
we compare model predictions of solar wind speed with velocity reconstructions
from InterPlanetary Scintillation (IPS) observations. For comparison with
observations near the Earth, we use OMNI data. Our results show that the
improved AWSoM model performs well in quantitative agreement with the
observations between the inner corona and 1 AU. The model now reproduces the
fast solar wind speed in the polar regions. Near the Earth, our model shows
good agreement with observations of solar wind velocity, proton temperature and
density. AWSoM offers an extensive application to study the solar corona and
larger heliosphere in concert with current and future solar missions as well as
being well suited for space weather predictions.
