Articles | Volume 8, issue 9
Methods for assessment of models
28 Sep 2015
Methods for assessment of models |  | 28 Sep 2015

Calculations of the integral invariant coordinates I and L* in the magnetosphere and mapping of the regions where I is conserved, using a particle tracer (ptr3D v2.0), LANL*, SPENVIS, and IRBEM

K. Konstantinidis and T. Sarris

Related authors

Daedalus Ionospheric Profile Continuation (DIPCont): Monte Carlo studies assessing the quality of in situ measurement extrapolation
Joachim Vogt, Octav Marghitu, Adrian Blagau, Leonie Pick, Nele Stachlys, Stephan Buchert, Theodoros Sarris, Stelios Tourgaidis, Thanasis Balafoutis, Dimitrios Baloukidis, and Panagiotis Pirnaris
Geosci. Instrum. Method. Data Syst., 12, 239–257,,, 2023
Short summary
Analysis of in situ measurements of electron, ion and neutral temperatures in the lower thermosphere–ionosphere
Panagiotis Pirnaris and Theodoros Sarris
Ann. Geophys., 41, 339–354,,, 2023
Short summary
Lower-thermosphere–ionosphere (LTI) quantities: current status of measuring techniques and models
Minna Palmroth, Maxime Grandin, Theodoros Sarris, Eelco Doornbos, Stelios Tourgaidis, Anita Aikio, Stephan Buchert, Mark A. Clilverd, Iannis Dandouras, Roderick Heelis, Alex Hoffmann, Nickolay Ivchenko, Guram Kervalishvili, David J. Knudsen, Anna Kotova, Han-Li Liu, David M. Malaspina, Günther March, Aurélie Marchaudon, Octav Marghitu, Tomoko Matsuo, Wojciech J. Miloch, Therese Moretto-Jørgensen, Dimitris Mpaloukidis, Nils Olsen, Konstantinos Papadakis, Robert Pfaff, Panagiotis Pirnaris, Christian Siemes, Claudia Stolle, Jonas Suni, Jose van den IJssel, Pekka T. Verronen, Pieter Visser, and Masatoshi Yamauchi
Ann. Geophys., 39, 189–237,,, 2021
Short summary
Daedalus: a low-flying spacecraft for in situ exploration of the lower thermosphere–ionosphere
Theodoros E. Sarris, Elsayed R. Talaat, Minna Palmroth, Iannis Dandouras, Errico Armandillo, Guram Kervalishvili, Stephan Buchert, Stylianos Tourgaidis, David M. Malaspina, Allison N. Jaynes, Nikolaos Paschalidis, John Sample, Jasper Halekas, Eelco Doornbos, Vaios Lappas, Therese Moretto Jørgensen, Claudia Stolle, Mark Clilverd, Qian Wu, Ingmar Sandberg, Panagiotis Pirnaris, and Anita Aikio
Geosci. Instrum. Method. Data Syst., 9, 153–191,,, 2020
Short summary
Geomagnetic activity and local time dependence of the distribution of ultra low-frequency wave power in azimuthal wavenumbers, m
Theodore E. Sarris and Xinlin Li
Ann. Geophys., 35, 629–638,,, 2017
Short summary

Related subject area

Solar-terrestrial science
Daily INSOLation (DINSOL-v1.0): an intuitive tool for classrooms and specifying solar radiation boundary conditions
Emerson D. Oliveira
Geosci. Model Dev., 16, 2371–2390,,, 2023
Short summary
SSolar-GOA v1.0: a simple, fast, and accurate Spectral SOLAR radiative transfer model for clear skies
Victoria Eugenia Cachorro, Juan Carlos Antuña-Sanchez, and Ángel Máximo de Frutos
Geosci. Model Dev., 15, 1689–1712,,, 2022
Short summary
Application of CCM SOCOL-AERv2-BE to cosmogenic beryllium isotopes: description and validation for polar regions
Kseniia Golubenko, Eugene Rozanov, Gennady Kovaltsov, Ari-Pekka Leppänen, Timofei Sukhodolov, and Ilya Usoskin
Geosci. Model Dev., 14, 7605–7620,,, 2021
Short summary
UBER v1.0: a universal kinetic equation solver for radiation belts
Liheng Zheng, Lunjin Chen, Anthony A. Chan, Peng Wang, Zhiyang Xia, and Xu Liu
Geosci. Model Dev., 14, 5825–5842,,, 2021
Short summary
Azimuthal averaging–reconstruction filtering techniques for finite-difference general circulation models in spherical geometry
Tong Dang, Binzheng Zhang, Jiuhou Lei, Wenbin Wang, Alan Burns, Han-li Liu, Kevin Pham, and Kareem A. Sorathia
Geosci. Model Dev., 14, 859–873,,, 2021
Short summary

Cited articles

Bourdarie, S. and O'Brien, T. P.: International radiation belt environment modelling library, COSPAR Panel on Radiation Belt Environment Modelling (PRBEM), 2009.
Heynderickx, D., Quaghebeur, B., Wera, J., Daly, E. J., and Evans, H. D. R.: New radiation environment and effects models in the European Space Agency's Space Environment Information System (SPENVIS), Space Weather, 2, S10S03,, 2004.
Koller, J. and Zaharia, S.: LANL*V2.0: global modeling and validation, Geosci. Model Dev., 4, 669–675,, 2011.
Kuznetsova, M.: Tsyganenko geomagnetic field model and Geopack libraries, available at: (last access: 23 September 2015), August 2006.
Prölss, G.: Physics of the Earth's Space Environment: An Introduction, Springer-Verlag, Berlin, Heidelberg, 2004.
Short summary
The 2nd & 3rd adiabatic invariants (in particular their proxies I & L*) are commonly used to characterize charged particle motion in a magnetic field. However care should be taken when calculating them, as the assumption of their conservation is not valid everywhere in the Earth’s magnetosphere. In this paper we compare calculations of I and L* using LANLstar, SPENVIS, IRBEM and a 3D particle tracer, and we map the areas in the Earth’s magnetosphere where I & L* can be assumed to be conserved.