Premium
Evaluation of solar Type II radio burst estimates of initial solar wind shock speed using a kinematic model of the solar wind on the April 2001 solar event swarm
Author(s) -
Sun W.,
Dryer M.,
Fry C. D.,
Deehr C. S.,
Smith Z.,
Akasofu S.I.,
Kartalev M. D.,
Grigorov K. G.
Publication year - 2002
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2001gl013659
Subject(s) - coronal mass ejection , shock (circulatory) , solar wind , solar flare , shock wave , solar radio , meteorology , solar physics , physics , wind speed , environmental science , astronomy , mechanics , plasma , medicine , quantum mechanics
We compare simulation results of real time shock arrival time prediction with observations by the ACE satellite for a series of solar flares/coronal mass ejections which took place between 28 March and 18 April, 2001 on the basis of the Hakamada‐Akasofu‐Fry, version 2 (HAFv.2) model. It is found, via an ex post facto calculation, that the initial speed of shock waves as an input parameter of the modeling is crucial for the agreement between the observation and the simulation. The initial speed determined by metric Type II radio burst observations must be substantially reduced (30 percent in average) for most high‐speed shock waves.