Reanalysis of radiation belt electron phase space density using various boundary conditions and loss models

Details Reanalysis of radiation belt electron phase space density using various boundary conditions and loss models Reanalysis of radiation belt electron phase space density using various boundary conditions and loss models

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011adspr..48.1327d&link_type=abstract

Advances in Space Research, Volume 48, Issue 8, p. 1327-1334.

Statistics

Applications

3

Scientific paper

Data assimilation is becoming an increasingly important tool for understanding the near Earth hazardous radiation environments. Reanalysis of the radiation belts can be used to identify the electron acceleration mechanism and distinguish local acceleration from radial diffusion. However, for any practical applications we need to determine how reliable is reanalysis, and how significant is the dependence of the results on the assumptions of the code and choice of boundary conditions. We present the sensitivity of reanalysis of the radiation belt electron phase space density (PSD) to the assumed location of the outer boundary, using the VERB code and a Kalman filter. We analyze the sensitivity of reanalysis to changes in the electron-loss throughout the domain, and the sensitivity to the assumed boundary condition and its effect on the innovation vector. All the simulations presented in this study for all assumed loss models and boundary conditions, show that peaks in the phase space density of relativistic electrons build up between 4.5 and 6 R E during relativistic electron flux enhancements in the outer radiation belt. This clearly shows that peaks build up in the heart of the electron radiation belt independent of the assumptions in the model, and that local acceleration is operating there. The work here is also an important step toward performing reanalysis using observations from current and future missions.

Affiliated with

Also associated with

No associations

Rating

Reanalysis of radiation belt electron phase space density using various boundary conditions and loss models does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Reanalysis of radiation belt electron phase space density using various boundary conditions and loss models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reanalysis of radiation belt electron phase space density using various boundary conditions and loss models will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1813908