Center for

Geospace Storms

Transforming the Understanding and Predictability of Space Weather


space weather modeling

We innovate community space weather modeling capabilities by developing a mesoscale-resolving, data-augmented, seamlessly coupled Multiscale Atmosphere-Geospace Environment (MAGE) model


the scientific, academic, operational and broader public communities

We empower these communities by supporting NASA missions and facilitating a vibrant MAGE-enabled research program beyond CGS; laying the groundwork for transitioning MAGE to operations; training a new cohort of interdisciplinary geospace scientists; and engaging diverse audiences and expanding public awareness of space weather.


together how stormtime geospace responds to solar disturbances

We discover how different parts of geospace work collectively during storm time to shape its responses to solar disturbances

News Stories


Sep 18

The 3rd CGS Workshop is coming up!


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.


Sep 18

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


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!


Sep 11

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.

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One of the critical grand challenges of Solar and Space Physics today is understanding and predicting stormtime geospace spanning altitudes from a few tens to millions of kilometers.

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The Center for Geospace Storms (CGS) team is happy to hear your thoughts and questions. We solicit feedback, ideas and suggestions as to how the Center's activities can be made most useful to the community and address problems of a broad community interest.