The 3rd CGS Workshop is coming up!

CGS

Mark your calendars! The 3rd CGS Workshop will be held at JHU/APL and virtually during the week of November 14-18, 2022. The details of the previous two workshops, including recorded presentations, can be found on the CGS "News and Event" page. The preliminary agenda of the workshop is now available here.

Dr. Lin's AGU Advances paper on dawnside SAPS is selected for Editor Highlights

EOS

Dr. Dong Lin's paper on dawnside SAPS has been selected by AGU Advances Editor-in-Chief for highlight. Less than 2% of all publications are featured this way according to the AGU Journals Director. Congratulations, Dong!

Cause of an extremely large magnetic depression during the 1859 Carrington storm revealed

JGR Space Physics

Dr. Shin(ichi) Ohtani, a CGS team member from JHU/APL, has proposed a new interpretation of the cause of an extremely large (~1600 nT) and short-lived (~2 hr) magnetic depression observed at Mumbai (India) during the 1859 Carrington storm. Other available data are limited, and whether its cause was magnetospheric or ionospheric has been controversial. By cross-examining a similar, but much smaller, magnetic depression observed during the 2003 Halloween storm, Dr. Ohtani concluded that the Mumbai magnetic depression was caused not by the ring current but by a dayside field-aligned current system driven by magnetic reconnection at the dayside magnetopause. This current system is known to be prevalent, but it is suggested that some unconventional factors such as nightside substorm activity contribute to its stormtime intensification. Testing such an idea with a globally-coupled stormtime model such as MAGE is a critical goal for the CGS team.