Imperial College London
Portrait Picture

DrHeliHietala

Faculty of Natural Sciences, Department of Physics

Academic Visitor
 
 
 
//

Contact

 

+44 (0)20 7594 7660h.hietala CV

 
 
//

Location

 

6M58Blackett LaboratorySouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Chen:2020:10.1029/2020ea001331,
author = {Chen, Y and Toth, G and Hietala, H and Vines, SK and Zou, Y and Nishimura, Y and Silveira, MVD and Guo, Z and Lin, Y and Markidis, S},
doi = {10.1029/2020ea001331},
journal = {Earth and Space Science},
pages = {1--15},
title = {Magnetohydrodynamic with embedded particleincell simulation of the Geospace Environment Modeling dayside kinetic processes challenge event},
url = {http://dx.doi.org/10.1029/2020ea001331},
volume = {7},
year = {2020}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We use the MHD with embedded particleincell model (MHDEPIC) to study the Geospace Environment Modeling (GEM) dayside kinetic processes challenge event at 01:5003:00 UT on 20151118, when the magnetosphere was driven by a steady southward IMF. In the MHDEPIC simulation, the dayside magnetopause is covered by a PIC code so that the dayside reconnection is properly handled. We compare the magnetic fields and the plasma profiles of the magnetopause crossing with the MMS3 spacecraft observations. Most variables match the observations well in the magnetosphere, in the magnetosheath, and also during the current sheet crossing. The MHDEPIC simulation produces flux ropes, and we demonstrate that some magnetic field and plasma features observed by the MMS3 spacecraft can be reproduced by a flux rope crossing event. We use an algorithm to automatically identify the reconnection sites from the simulation results. It turns out that there are usually multiple Xlines at the magnetopause. By tracing the locations of the Xlines, we find the typical moving speed of the Xline endpoints is about 70~km/s, which is higher than but still comparable with the groundbased observations.
AU  - Chen,Y
AU  - Toth,G
AU  - Hietala,H
AU  - Vines,SK
AU  - Zou,Y
AU  - Nishimura,Y
AU  - Silveira,MVD
AU  - Guo,Z
AU  - Lin,Y
AU  - Markidis,S
DO  - 10.1029/2020ea001331
EP  - 15
PY  - 2020///
SN  - 2333-5084
SP  - 1
TI  - Magnetohydrodynamic with embedded particleincell simulation of the Geospace Environment Modeling dayside kinetic processes challenge event
T2  - Earth and Space Science
UR  - http://dx.doi.org/10.1029/2020ea001331
UR  - https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020EA001331
UR  - http://hdl.handle.net/10044/1/83013
VL  - 7
ER  -
Download