A statistical investigation into coupled magnetospheric-ionospheric dynamics

via multi-scale, multi-instrument, data assimilation


A. Grocott, O. Amm, J.B.H Baker, M.P. Freeman, S.E. Haaland, B. Hubert, G. Lu, F. Pitout, I.J. Rae, and T.K. Yeoman

 

Meeting 2:    26th - 30th April 2010


Aims: Review the techniques and data products which we have now been derived.  Define a common file format for all datasets and discuss basic statistics of each.

  1. Issues arising since last meeting


  3. •Averaging method for vectors - vector or scalar averaging?

  4. •FIltering parameters for radar data - power, spectral width, velocity, velocity error limits?

  5. •Dayglow subtraction techniques for IMAGE FUV data

  6. •Baseline and time averaging of ground magnetometer data - dealing with data gaps



  1. Current 1 month (Dec 2002) sample files:


  3. CDF: 9334 records of IMF masked data, containing:

  4. cdf epoch, B(imf), v(sw), n(sw), AE, Dst, g1, g2, sw_p, clock angle, bias value, G-index, D(nt, nd, np),

  5. where:

  6. nt = number of time records (9334)

  7. nd = number of data records per time index (observatory dependent), and

  8. np = number of parameters per measurement

  1. Not yet available:

  2. •Greenland magnetometers

  3. •Antarctic magnetometers

  4. •Alaskan Magnetometers

  5. •Cluster CIS



  1. Tasks prior to interim deadline


  3. •Provide missing datasets for test month!

  4. •Determine best averaging method for vector measurements

  5. •Investigate basic statistics of each primary dataset for validation purposes

  6. •Extend datasets to 2001-2005 interval

  7. •Determine preliminary analysis goals and assign to team members

  1. Example PEACE average energy flux

  1. Mean monthly ground H-component from IMAGE / CARISMA chains

  1. Monthly mean Cluster EDI Mapped Electric Field Magnitude

  1. Monthly mean IMAGE FUV si12 auroral oval

  1. Example of SuperDARN line-of-sight velocity magnitude averages

  1. Example of SuperDARN coverage statistics

  1. •IMAGE FUV

  1. •Cluster EDI

  1. •Ground magnetometers (IMAGE, CARISMA)

  1. •Cluster PEACE

  1. •SuperDARN