The solar physics team at Predictive Science is once again predicting the structure of the corona for the upcoming eclipse, which will occur on August 21, 2012 .  This eclipse will be will be visible across the entire contiguous United States, and will trace out a band, approximately 70 miles wide across fourteen states, being first visible shortly after 10:15am PDT at Oregon's Pacific coast, and finally finishing in Charleston, South Carolina. Our preliminary prediction, which was posted on July 31st, can be viewed at http://www.predsci.com/  in the "Latest News" section on the right-hand side of the page.  The prediction will be updated during the upcoming weeks, resulting a final prediction approximately one week before the event.   

Our model relies on 3-D, resistive, time-dependent magnetohydrodynamic (MHD) equations to predict the state of the corona.  Photospheric magnetic field data from the HMI instrument aboard SDO are used to specify the boundary condition on the radial magnetic field.  This year, for the first time, we are using a new Wave-Turbulence-Driven model to self-consistently capture the large-scale propagation, reflection, and dissipation of wave turbulence along closed coronal loops.   Such a model also allows us to predict emission in extreme ultraviolet (EUV) wavelengths and X-rays, which can be compared with solar observations from spacecraft such as SDO, STEREO, and Hinode.  Additionally, we have increased the number of mesh points used to 65 million, allowing us to capture even more spatial structure. This work is supported by NASA, NSF,  and AFOSR, and computations are supported by the Texas Advanced Computing Center at Austin and the NASA Advanced Supercomputing division at Ames.  A direct link to our prediction page is: