Sentences with phrase «faculae on»
Because of the variations of sunspots and faculae on the sun's surface, the total solar irradiance (TSI), also called the solar constant, varies on a roughly 11 - year cycle by about 0.07 %, which has been measured by orbiting satellites since 1978 [Lean, 1987, 1991; Wilson et al., 1981].
http://www.realclimate.org/ Not exact matches
This object had an almost circular shape, and a light beam came out from its eastern part that crossed the sunspot to the south of the nucleus, producing a shadow on the penumbra that was lost in the large mass of faculae surrounding the eastern extreme of the sunspot.»
We are working on this and testing multiple ideas; multi-epoch data, high - resolution spectra, and better understanding of the spot and facula properties are likely to be part of the solution.
There are more than 300 bright areas, called «faculae,» on Ceres.
They noted that empirical models based upon sunspots and faculae do not account for all irradiance variations observed over an activity cycle (see also NRC (1994)-RRB- and base their con - elation on an observed relationship between brightness and excess chromospheric emission, using the Ca II H and...»
The background faculae / plage areas on the magnetogram appearing about the same over the decline period.
The effect from faculae is very small, not enough to significantly change the Earth's temperature on their own.
We use a TSI model that is solely based on solar surface magnetic phenomena (sunspots and faculae including network).