Effects of the solar activity on the modes of atmospheric variability in the Southern Hemisphere

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F13%3A00426808" target="_blank" >RIV/68378289:_____/13:00426808 - 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

Effects of the solar activity on the modes of atmospheric variability in the Southern Hemisphere

Popis výsledku v původním jazyce

We analyze effects of the variations of solar activity on mid-tropospheric circulation of the Southern Hemisphere in terms of modes of low-frequency variability. The modes are detected by principal component analysis orthogonally rotated) in an S-mode. The analyzed domain is the Southern Hemisphere extratropics south of 20°S (inclusive); the circulation is characterized by 500 hPa heights; the analyzed period is 1950-2011. Separate analyses are conducted for individual seasons, that is, winter (JJA), spring (SON), summer (DJF), and autumn (MAM). Solar activity is described by Wolf sunspot numbers. Monthly mean values of both circulation and solar variables enter the analysis. The modes are detected separately for the months with a low and high solar activity, and differences between the spatial patterns of the modes (principal component loadings) are tested for statistical significance. All the modes detected exhibit variations in their spatial extent, position of action centers, and i

Název v anglickém jazyce

Effects of the solar activity on the modes of atmospheric variability in the Southern Hemisphere

Popis výsledku anglicky

We analyze effects of the variations of solar activity on mid-tropospheric circulation of the Southern Hemisphere in terms of modes of low-frequency variability. The modes are detected by principal component analysis orthogonally rotated) in an S-mode. The analyzed domain is the Southern Hemisphere extratropics south of 20°S (inclusive); the circulation is characterized by 500 hPa heights; the analyzed period is 1950-2011. Separate analyses are conducted for individual seasons, that is, winter (JJA), spring (SON), summer (DJF), and autumn (MAM). Solar activity is described by Wolf sunspot numbers. Monthly mean values of both circulation and solar variables enter the analysis. The modes are detected separately for the months with a low and high solar activity, and differences between the spatial patterns of the modes (principal component loadings) are tested for statistical significance. All the modes detected exhibit variations in their spatial extent, position of action centers, and i

Druh

O - Ostatní výsledky

CEP obor

DG - Vědy o atmosféře, meteorologie

OECD FORD obor

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Projekt

<a href="/cs/project/7AMB12AR019" target="_blank" >7AMB12AR019: Vlivy proměnlivosti sluneční aktivity na atmosférickou cirkulaci jižní polokoule a jihoamerické klima v časových měřítkách roků až tisíciletí</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