Center for Astrophysics Research and Technologies Seminar Series
Wide-band Wide-field Deep Continuum Radio Imaging
Presented by Preshanth Jagannathan, NRAO
As the primary input to all coronal and solar wind models, global estimates of the solar photospheric magnetic field distribution are critical to space weather forecasting. These global magnetic maps are essential for accurate modeling of the corona and solar wind, which is vital for gaining the basic understanding necessary to improve forecasting models needed for Air Force and civilian operations. Over the last several years AFRL, in collaboration with Los Alamos National Laboratory (LANL) and the National Solar Observatory (NSO), has been developing a model that produces much more realistic estimates of the instantaneous global photospheric magnetic field distribution than that provided by traditional photospheric field synoptic maps. The Air Force Data Assimilative Photospheric flux Transport (ADAPT) model is a photospheric flux transport model, originally developed at NSO, that makes use of data assimilation methodologies developed at LANL. The flux transport model evolves the observed solar magnetic flux using relatively well understood transport processes when measurements are not available and then updates the modeled flux with new observations (available from both the Earth and the far side of the Sun) using data assimilation methods that rigorously take into account model and observational uncertainties. In this talk I provide an overview of the ADAPT model followed by several examples of how it is being used to improve coronal and solar wind modeling as well as space weather forecasts.
2:00 pm, Thursday, January 22, 2015
PAIS-2540, PAIS
Individuals with disabilities who need an auxiliary aid or service to attend or participate in P&A events should contact the Physics Department (phone: 505-277-2616, email: physics@unm.edu) well in advance to ensure your needs are accomodated. Event handouts can be provided in alternative accessible formats upon request. Please contact the Physics front office if you need written information in an alternative format.
A schedule of talks within the Department of Physics and Astronomy is available on the P&A web site at http://physics.unm.edu/pandaweb/events/index.php