Are trends in total electron content (TEC) really positive?

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F13%3A00394691" target="_blank" >RIV/68378289:_____/13:00394691 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/jgra.50261" target="_blank" >http://dx.doi.org/10.1002/jgra.50261</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/jgra.50261" target="_blank" >10.1002/jgra.50261</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Are trends in total electron content (TEC) really positive?

Popis výsledku v původním jazyce

The total electron content (TEC) is a primary ionospheric parameter as it can be studied globally using signals of GNSS satellites. Lean et al. (2011, JGR) in the first study of long-term trends in TEC found positive trends for the period 1995?2010 basedon TEC derived from global GPS observations. However, the positive trends seem to be inconsistent with both observed and modeled trends in foF2. Here we try to shed light on this puzzle using historical Faraday rotation TEC measurements and foF2 data over the period 1995?2010. We use data from European area where Lean et al. (2011) report remarkably stronger than average positive trend of TEC. These data suggest no trend of TEC in this region in the past but also almost no trend of foF2 over 1995?2010compared with a negative trend in solar cycles 21 and 22. This means that the trends for 1995?2010 are more positive than trends for the period 1976?1996 and that the trends for 1995?2010 are not representative for the previous period. Th

Název v anglickém jazyce

Are trends in total electron content (TEC) really positive?

Popis výsledku anglicky

The total electron content (TEC) is a primary ionospheric parameter as it can be studied globally using signals of GNSS satellites. Lean et al. (2011, JGR) in the first study of long-term trends in TEC found positive trends for the period 1995?2010 basedon TEC derived from global GPS observations. However, the positive trends seem to be inconsistent with both observed and modeled trends in foF2. Here we try to shed light on this puzzle using historical Faraday rotation TEC measurements and foF2 data over the period 1995?2010. We use data from European area where Lean et al. (2011) report remarkably stronger than average positive trend of TEC. These data suggest no trend of TEC in this region in the past but also almost no trend of foF2 over 1995?2010compared with a negative trend in solar cycles 21 and 22. This means that the trends for 1995?2010 are more positive than trends for the period 1976?1996 and that the trends for 1995?2010 are not representative for the previous period. Th

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DG - Vědy o atmosféře, meteorologie

OECD FORD obor

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Projekt

<a href="/cs/project/GAP209%2F10%2F1792" target="_blank" >GAP209/10/1792: Dlouhodobé změny v systému atmosféra-ionosféra</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Journal of Geophysical Research: Space Physics

ISSN

2169-9380

e-ISSN

—

Svazek periodika

118

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

3831-3835

Kód UT WoS článku

000325217100098

EID výsledku v databázi Scopus

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