Predicció del vent solar WSA-Enlil

A continuació es mostra l'última previsió de les condicions del vent solar, tal com ha previst el model WSA-Enlil. El vent solar és un flux ràpid de partícules carregades que emanen del Sol i es desplacen cap a la Terra i els planetes. Durant les condicions de "bon temps", el vent solar encara conté variacions significatives de densitat i velocitat que s'originen a la superfície solar i que es transmeten amb un aspecte espiral a causa de la rotació del Sol cada aproximadament 27 dies.

A intervals irregulars, el "bon temps" és interromput per les principals erupcions solars conegudes com a expulsions de massa coronals (EMC) que són impulsades cap al vent de fons. Les variacions de la densitat i la velocitat del plasma en aquestes tempestes solars poden ser molt més dramàtiques que en condicions de tranquil·litat. Tant per a les condicions de "bon temps" com de "tempesta", és important predir l'arribada a la Terra de variacions del vent solar, ja que poden provocar tempestes geomagnètiques.

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