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Journal Article

Global validation of data-assimilative electron ring current nowcast for space weather applications

Authors
/persons/resource/bhaas

Haas,  Bernhard
2.7 Space Physics and Space Weather, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/yshprits

SHPRITS,  YURI
2.7 Space Physics and Space Weather, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/wutzig

Wutzig,  Michael
2.7 Space Physics and Space Weather, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/matszabo

Szabo-Roberts,  Matyas
2.7 Space Physics and Space Weather, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/marina

Garcia Penaranda,  Marina
2.7 Space Physics and Space Weather, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/angelica

Castillo Tibocha,  Angelica Maria
2.7 Space Physics and Space Weather, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/himmel

Himmelsbach,  Julia
2.7 Space Physics and Space Weather, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/dedong

Wang,  D.
2.7 Space Physics and Space Weather, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Miyoshi,  Yoshizumi
External Organizations;

Kasahara,  Satoshi
External Organizations;

Keika,  Kunihiro
External Organizations;

Yokota,  Shoichiro
External Organizations;

Shinohara,  Iku
External Organizations;

Hori,  Tomo
External Organizations;

External Ressource
No external resources are shared
Fulltext (public)

5024824.pdf
(Publisher version), 4MB

Supplementary Material (public)
There is no public supplementary material available
Citation

Haas, B., SHPRITS, Y., Wutzig, M., Szabo-Roberts, M., Garcia Penaranda, M., Castillo Tibocha, A. M., Himmelsbach, J., Wang, D., Miyoshi, Y., Kasahara, S., Keika, K., Yokota, S., Shinohara, I., Hori, T. (2024): Global validation of data-assimilative electron ring current nowcast for space weather applications. - Scientific Reports, 14, 2327.
https://doi.org/10.1038/s41598-024-52187-0


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5024824
Abstract
The hazardous plasma environment surrounding Earth poses risks to satellites due to internal charging and surface charging effects. Accurate predictions of these risks are crucial for minimizing damage and preparing for system failures of satellites. To forecast the plasma environment, it is essential to know the current state of the system, as the accuracy of the forecast depends on the accuracy of the initial condition of the forecast. In this study, we use data assimilation techniques to combine observational data and model predictions, and present the first global validation of a data-assimilative electron ring current nowcast during a geomagnetic storm. By assimilating measurements from one satellite and validating the results against another satellite in a different magnetic local time sector, we assess the global response and effectiveness of the data assimilation technique for space weather applications. Using this method, we found that the simulation accuracy can be drastically improved at times when observations are available while eliminating almost all of the bias previously present in the model. These findings contribute to the construction of improved operational models in estimating surface charging risks and providing realistic ’source’ populations for radiation belt simulations.