{"id":77,"date":"2025-08-28T14:17:03","date_gmt":"2025-08-28T14:17:03","guid":{"rendered":"https:\/\/teams.issibern.ch\/precipitationofenergeticparticles\/?page_id=77"},"modified":"2025-08-28T14:38:38","modified_gmt":"2025-08-28T14:38:38","slug":"results","status":"publish","type":"page","link":"https:\/\/teams.issibern.ch\/precipitationofenergeticparticles\/results\/","title":{"rendered":"Results"},"content":{"rendered":"

Q1: What is the missing loss mechanism<\/span> of ring current electrons besides the diffusive scattering by whistler-mode waves?<\/h3>\n

Results:<\/h4>\n
\n
\u2714 Two potential mechanisms were considered and ruled out: scattering by ECH waves and TDS<\/dt>\n
\u2714 Additional potential candidate mechanisms were identified: sporadic high-amplitude chorus waves, KAW, nonlinear effects, cold plasma density variations, hiss and exohiss<\/dt>\n<\/dl>\n

Future recommendations:<\/h4>\n
\n
\u27a4 Independent validation using LEO observations<\/dt>\n
\u27a4 Verification based on the ratio between trapped and precipitating particles<\/dt>\n
\u27a4 Coordinated conjunctions with multiple satellites, including NASA\u2019s Van Allen Probes, JAXA\u2019s Arase, ESA\u2019s PROBA-3, and NOAA\u2019s POES and DMSP<\/dt>\n
\u27a4 Enhanced modeling, including density-dependent effects<\/dt>\n<\/dl>\n

Q2: What is the energy of electrons that are significantly influenced by EMIC waves<\/span>? A related question is why is the EMIC wave activity in the magnetosphere not always accompanied by the energetic particle precipitation at the conjugate point on LEO orbit?<\/h3>\n

Results:<\/h4>\n
\n
\u2714 EMIC waves drive electron PSD minima at multi-MeV energies, but not at seed energies<\/dt>\n
\u2714 Evidence from LEO indicates EMIC-driven precipitation of electrons at 100s of keV and above<\/dt>\n
\u2714 Low-energy electron scattering may occur through non-diffusive scattering<\/dt>\n
\u2714 Statistical distributions of EMIC waves have been compared across multiple satellite missions<\/dt>\n<\/dl>\n

Future recommendations:<\/h4>\n
\n
\u27a4 Refine EMIC wave datasets. Intercalibrate and combine then into a global dataset spanning multiple observations and solar cycles<\/dt>\n
\u27a4 Develop new EMIC wave models including frequency spectra, ion composition, and plasma environment<\/dt>\n
\u27a4 Incorporate nonlinear and non-diffusive effects into modeling and interpretation<\/dt>\n<\/dl>\n

Q3: Which energy range of precipitating electrons has the largest impact on the chemistry and dynamics of the middle atmosphere<\/span>?<\/h3>\n

Results:<\/h4>\n
\n
\u2714 Particle precipitation was reviewed using observations from multiple satellites<\/dt>\n
\u2714 Particle precipitation from the inner magnetosphere (including radiation belts and ring current) was shown to significantly affect mesospheric ozone, NO, and N2<\/sub>O density variations<\/dt>\n
\u2714 The May 2024 geomagnetic storm was analyzed in detail as a challenge event<\/dt>\n<\/dl>\n

Future recommendations:<\/h4>\n
\n
\u27a4 Obtain realistic ionization rates based on observed and modeled spectra of precipitation particles (keV to multi-MeV)<\/dt>\n
\u27a4 Develop a global reference map of ozone, NO, and N2<\/sub>O, accounting for seasonal and latitudinal variations and excluding phenomena such as stratospheric warming<\/dt>\n
\u27a4 Explore community models (e.g., via CCMC) and establish coupling between inner magnetosphere and atmosphere models<\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"

Q1: What is the missing loss mechanism of ring current electrons besides the diffusive scattering by whistler-mode waves? Results: \u2714 Two potential mechanisms were considered and ruled out: scattering by ECH waves and TDS \u2714 Additional potential candidate mechanisms were identified: sporadic high-amplitude chorus waves, KAW, nonlinear effects, cold plasma density variations, hiss and exohiss […]<\/p>\n","protected":false},"author":138,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-77","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/teams.issibern.ch\/precipitationofenergeticparticles\/wp-json\/wp\/v2\/pages\/77","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/teams.issibern.ch\/precipitationofenergeticparticles\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/teams.issibern.ch\/precipitationofenergeticparticles\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/teams.issibern.ch\/precipitationofenergeticparticles\/wp-json\/wp\/v2\/users\/138"}],"replies":[{"embeddable":true,"href":"https:\/\/teams.issibern.ch\/precipitationofenergeticparticles\/wp-json\/wp\/v2\/comments?post=77"}],"version-history":[{"count":6,"href":"https:\/\/teams.issibern.ch\/precipitationofenergeticparticles\/wp-json\/wp\/v2\/pages\/77\/revisions"}],"predecessor-version":[{"id":84,"href":"https:\/\/teams.issibern.ch\/precipitationofenergeticparticles\/wp-json\/wp\/v2\/pages\/77\/revisions\/84"}],"wp:attachment":[{"href":"https:\/\/teams.issibern.ch\/precipitationofenergeticparticles\/wp-json\/wp\/v2\/media?parent=77"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}