A novel technique for rapid L* calculation: algorithm and implementation

Author
Keywords
Abstract
Computing the magnetic drift invariant, L*, rapidly and accurately has always been a challenge to magnetospheric modelers, especially given the im- portance of this quantity in the radiation belt community. Min et al. (2013) proposed a new method of calculating L* using the principle of energy con- servation. Continuing with the approach outlined therein, the present pa- per focuses on the technical details of the algorithm to outline the implemen- tation, systematic analysis of accuracy, and verification of the speed of the new method. We also show new improvements which enable near real-time computation of L*. The relative error is on the order of 10-3 when \~ 0.1 RE grid resolution is used and the calculation speed is about two seconds per particle in the popular Tsyganenko and Sitnov 05 model (TS05). Based on the application examples, we suggest that this method could be an added resource for the radiation belt community.
Year of Publication
2013
Journal
Journal of Geophysical Research
Volume
118
Start Page
1912
Number of Pages
1912-1921
Date Published
05/2013
URL
http://onlinelibrary.wiley.com/doi/10.1002/jgra.50250/full
DOI
10.1002/jgra.50250