The Martian ionosphere at solar minimum: Empirical model validation using MAVEN ROSE data
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10475687" target="_blank" >RIV/00216208:11320/23:10475687 - isvavai.cz</a>
Výsledek na webu
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=viSMdzL9np" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=viSMdzL9np</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.icarus.2021.114609" target="_blank" >10.1016/j.icarus.2021.114609</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
The Martian ionosphere at solar minimum: Empirical model validation using MAVEN ROSE data
Popis výsledku v původním jazyce
The Radio Occultation Science Experiment (ROSE; Withers et al., 2018, 2020) on the Mars Atmosphere and Volatile EvolutioN (MAVEN) satellite has produced over 400 electron density profiles from July 2016 to November 2019. These N-e(h) profiles occurred over a large range of solar zenith angles (54 degrees - 130 degrees) and solar flux conditions (24-54 solar flux units at Mars). One of the goals of the MAVEN mission is to characterize the status of the topside ionosphere at Mars as a reservoir of possible escaping plasma. Here we evaluate how ROSE topside ionospheric measurements, made predominantly under solar minimum conditions, compare with the only empirical model of the topside ionosphere (Nemec et al., 2019). To assess congruence between the model and the observations, a deviation factor (DF) is calculated for each predicted versus observed N-e(h) profile. Diurnally, low DFs (and thus higher agreement) occur for occultations with solar zenith angles (SZA) < 82 degrees. On a longer time scale, lower solar fluxes tend to have higher DF values. Correlations of the maximum electron density (N-max) of each profile (predicted and observed) have an overall correlation coefficient (CC) of 0.96. Similarly, the observed total electron content of the topside ionosphere (TTEC) agrees with predictions (CC = 0.86). The model and the predictions differ most for the altitude of peak density (CC = 0.62 for SZA < 90 degrees).
Název v anglickém jazyce
The Martian ionosphere at solar minimum: Empirical model validation using MAVEN ROSE data
Popis výsledku anglicky
The Radio Occultation Science Experiment (ROSE; Withers et al., 2018, 2020) on the Mars Atmosphere and Volatile EvolutioN (MAVEN) satellite has produced over 400 electron density profiles from July 2016 to November 2019. These N-e(h) profiles occurred over a large range of solar zenith angles (54 degrees - 130 degrees) and solar flux conditions (24-54 solar flux units at Mars). One of the goals of the MAVEN mission is to characterize the status of the topside ionosphere at Mars as a reservoir of possible escaping plasma. Here we evaluate how ROSE topside ionospheric measurements, made predominantly under solar minimum conditions, compare with the only empirical model of the topside ionosphere (Nemec et al., 2019). To assess congruence between the model and the observations, a deviation factor (DF) is calculated for each predicted versus observed N-e(h) profile. Diurnally, low DFs (and thus higher agreement) occur for occultations with solar zenith angles (SZA) < 82 degrees. On a longer time scale, lower solar fluxes tend to have higher DF values. Correlations of the maximum electron density (N-max) of each profile (predicted and observed) have an overall correlation coefficient (CC) of 0.96. Similarly, the observed total electron content of the topside ionosphere (TTEC) agrees with predictions (CC = 0.86). The model and the predictions differ most for the altitude of peak density (CC = 0.62 for SZA < 90 degrees).
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10305 - Fluids and plasma physics (including surface physics)
Návaznosti výsledku
Projekt
<a href="/cs/project/LTAUSA17070" target="_blank" >LTAUSA17070: Elektromagnetické vlny v planetárních ionosférách a magnetosférách</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2023
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Icarus
ISSN
0019-1035
e-ISSN
1090-2643
Svazek periodika
393
Číslo periodika v rámci svazku
15 Mar
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
7
Strana od-do
114609
Kód UT WoS článku
000953437500001
EID výsledku v databázi Scopus
2-s2.0-85111279739