We have not yet established the impact of solar variability on the Earth's climate system because:
A) we have no way of measuring solar variability directly.
B) most scientists now agree that solar output is constant and does not vary.
C) satellites have not yet been around long enough to provide a data set of adequate length.
D) it is not a legitimate enough theory to gain much attention from the scientific community.

Question

Quizplus · Accepted Answer

Satellites have not been in orbit long enough to provide a long-term data set on solar variability and its impact on the Earth's climate system. While we do have proxies and historical records of solar activity, the lack of direct measurements from satellites limits our understanding of the sun's effects on climate. Choice A is incorrect because we do have ways of indirectly measuring solar variability through proxies and historical records. Choice B is incorrect because it is well-established that solar output does vary over time. Choice D is incorrect because the theory of solar variability impacting Earth's climate is a legitimate topic of research and has received attention from the scientific community.

We Have Not Yet Established the Impact of Solar Variability