The Community Coordinated Modeling Center: A Brief Overview NASA Goddard Space Flight Center Lika Guhathakurta

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Presentation transcript:

The Community Coordinated Modeling Center: A Brief Overview NASA Goddard Space Flight Center Lika Guhathakurta

“A US multi-agency partnership to enable, support, and perform the research and development for next generation space science and space weather models”

CCMC Facilitate Community Research Support Model Transition to Operations DoD and NOAA Space Weather needs CCMC Goals International Research Community

Goals: - One stop shopping for modern space science models - Easy access to modern models for non-experts - Simple-to-use, unified interfaces - Advanced, tailored visualization tools - Continuous improvements through user feedback CCMC Functions: Research Support

Through www-accessible run results Through runs on request (>1000 now), - magnetospheric models - ionospheric models - heliospheric models - solar models No cost to (international) user Service A. Chulaki, L. Rastaetter, M. Goldfarb

Solar Models Potential Field Source Surface (Luhmann, UCB) - Global solar magnetic field structure MAS (Linker et al – SAIC) – Global solar magnetic field and plasma structure P. MacNeice, L. Rastaetter Density, flows

Solar/Heliospheric Models WSA (Wang-Sheeley- Arge ) – PFSS corona + ‘potential’ current sheet + empirical kinematic solar wind

Heliospheric Models ENLIL (Odstrcil – NOAA) – 3D MHD model of inner heliosphere ( 30r s – 10AU). Exospheric Solar Wind Model (Lamy/Pierrard) – 1D kinetic model of solar wind solution along a coronal hole fieldline. Heliospheric Tomography (Jackson,Hick – UCSD) – Constructs global mass and velocity distribution from a simple kinematic model and assimilation of radio scintillation data.

Testing : Sun to Earth Photospheric Synoptic magnetograms WSA – potential field + equatorial current sheet model (1-21.5r s ) ENLIL - 3D MHD Heliosphere (21.5r s – 1,2 or 10AU) Running in realtime, collab. With CISM P. MacNeice, L. Rastaetter

Magnetospheric Element CCMC_CCMC_031307_SH_1.isosurface.mp4

Magnetospheric Models BATSRUS (UMich) – 3D global MHD models of magnetosphere Fok kinetic Ring Current and Radiation Belt Models ( 2R E – 6R E ). also executing in real time

Magnetospheric Models LFM MHD model CMIT 1.0 CISM collaboration OpenGGCM MHD model J. Raeder collaboration science quality resolution

Ionospheric Models Electrodynamic (MHD ionospheric modules) Empirical (Weimer statistical) SAMI 2 meridional ionosheric (Huba, NRL) CTIP global ionospheric (Fuller-Rowell et al, NOAA) M. Kuznetsova, L. Rastaetter NmF2 nene

Runs-On-Request System Usage (as of Aug 2006) Executed runs: Solar & Heliosphere : 128 Global magnetosphere: 607 Inner magnetosphere: 97 Ionosphere: 166 Total: 998 runs Now > 1300! cumulative run execution

Decision makers and operational agencies need model evaluations - Science-based validation: Compare model output to measurements for select events, detailed analysis - Metrics studies: Repeatable comparison between model output and measurements, “one number” Need to be blind studies, performed by independent agent CCMC Functions: Transition to Ops

V&V: Software Predicting MeV Electron Intensity Quiet vs stormy period Evaluated model:  Software predicting MeV electron intensity at the geostationary orbit  Developed at: APL/UPOS  Input: real-time ACE data  Output: polar cap potential  Considered for operations at AFWA Reference Model Skill Score Whole interval QuietStormy 1-day persistence Mean day recurrence

V&V: ENLIL Model Preliminary Evaluation Velocity Density TemperatureMagnetic Field Plots of ENLIL output (blue line) vs real-time ACE data (red)

Support the generation of advanced space science models Collaborate with related activities (CISM, CSEM…) Expand strong service to (international) research community –Execute runs-on-request –Provide ready access to model output with enhanced tools –Includes mission support, e.g., STEREO, THEMIS –Includes campaign support, e.g., IHY –Interested in international partnering Expand model base, e.g., –UCB ANMHD model –DeVore ARMS –DeForest Fluxon model –Nonlinear force-free model Serve models developed under LWS and NASA/NSF partnership Driven by user feedback Future Activities: Research Support