Comparisons of SWARM Electron Temperature Data with IRI

0452848 - ÚFA 2016 TH eng A - Abstrakt
Truhlík, Vladimír - Bilitza, D. - Stolle, C. - Buchert, S. C. - Bezděk, Aleš - Podolská, Kateřina - Třísková, Ludmila
Comparisons of SWARM Electron Temperature Data with IRI.
18th IRI-2015 Workshop. Bangkok: COSPAR/URSI IRI Working Group and Faculty of Engineering (KMITL), 2015. s. 770.
[International Reference Ionosphere 2015 (IRI-2015) Workshop /18./. 02.11.2015-13.11.2015, Bangkok]
Institucionální podpora: RVO:68378289 ; RVO:67985815
Klíčová slova: international reference ionosphere * electron temperature
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
http://www.iri2015.kmitl.ac.th/downloads/IRI2015_TechnicalProgram.pdf

We present comparisons between the electron temperature (Te) measured by the SWARM Langmuir Probes and the IRI (International Reference Ionosphere). IRI includes two options for the electron temperature - TBT-2012 (Truhlik et al., 2012) and Bil-1985 (Bilitza et al., 1985). Both options are used in this study. We found that patterns of SWARM Te and IRI Te are similar however substantially differ in absolute values. The differences between SWARM and IRI Te are dependent on local time and latitude. The smallest differences are observed at high latitudes where SWARM Te is higher than IRI by about 10%. The largest differences were found at low and equatorial latitudes at nighttime, where SWARM Te is more than 100% higher than IRI predicts. We also compare SWARM Te data with quasi-simultaneous C/NOFS ion temperature data at night and low latitudes where thermal equilibrium between electrons and ions can be assumed (Te=Ti). At SWARM altitudes both IRI Te options are mainly based on Atmosphere Explorer-C electron temperature measurement which was successfully validated with ground and space data (e.g. Benson et al., 1977) and therefore can be considered highly reliable. We introduce a correction procedure for the SWARM Te data to obtain a better agreement with IRI.
Trvalý link: http://hdl.handle.net/11104/0257437