Improving the electron and ion temperature models in IRI

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F18%3A00492854" target="_blank" >RIV/68378289:_____/18:00492854 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Improving the electron and ion temperature models in IRI

Popis výsledku v původním jazyce

The International Reference ionosphere (IRI) model includes models of the electron and ionntemperatures. For the electron temperature two options (TBT-2012 and Bil-1985) are availablenbased on spherical harmonics expansion up to 8th order. The ion temperature in IRI is derivednfrom the energy balance equation among ions, electrons and neutrals. In this study we will discussnrecently available data sets (Swarm LP, ISS-FPMU, and Champ LP) to assess their potentialnfor improvement of the electron temperature model especially its spatial resolution. We willnpresent the global distributions of the electron temperature modeled using higher order of sphericalnharmonics and we will discuss their inclusion in the TBT-2012 option. We have re-examinednion temperature data from older satellites and combined them with newly available data fromnDMSP, C/NOFS, and others (primarily from SPDF: https://spdf.gsfc.nasa.gov/pub/data/)ninto a unified data-base. This data-base has been used to establish global patterns of the ionntemperature and to determine Ti variation with solar activity. To better understand the solarnactivity variations of the ion temperature at different latitudes and local times we have usednsimulations with the Field Line Interhemispheric Plasma flow (FLIP) model. We will alsonpresent ratio of the electron and ion temperatures dependence on geophysical parameters andna comparison with recent measurements from another sources (e.g. Kharkiv Incoherent ScatternRadar). Finally, we will discuss future improvements of the plasma temperature modelsnthrough data assimilation.

Název v anglickém jazyce

Improving the electron and ion temperature models in IRI

Popis výsledku anglicky

The International Reference ionosphere (IRI) model includes models of the electron and ionntemperatures. For the electron temperature two options (TBT-2012 and Bil-1985) are availablenbased on spherical harmonics expansion up to 8th order. The ion temperature in IRI is derivednfrom the energy balance equation among ions, electrons and neutrals. In this study we will discussnrecently available data sets (Swarm LP, ISS-FPMU, and Champ LP) to assess their potentialnfor improvement of the electron temperature model especially its spatial resolution. We willnpresent the global distributions of the electron temperature modeled using higher order of sphericalnharmonics and we will discuss their inclusion in the TBT-2012 option. We have re-examinednion temperature data from older satellites and combined them with newly available data fromnDMSP, C/NOFS, and others (primarily from SPDF: https://spdf.gsfc.nasa.gov/pub/data/)ninto a unified data-base. This data-base has been used to establish global patterns of the ionntemperature and to determine Ti variation with solar activity. To better understand the solarnactivity variations of the ion temperature at different latitudes and local times we have usednsimulations with the Field Line Interhemispheric Plasma flow (FLIP) model. We will alsonpresent ratio of the electron and ion temperatures dependence on geophysical parameters andna comparison with recent measurements from another sources (e.g. Kharkiv Incoherent ScatternRadar). Finally, we will discuss future improvements of the plasma temperature modelsnthrough data assimilation.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/LTAUSA17100" target="_blank" >LTAUSA17100: Modely parametrů termálního plazmatu v okolí Země a jejich specifikace v reálném čase na základě družicových měření</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů