Tag Archives: Cloud cover

New paper: Clouds blown by the solar wind

This paper suggests a terrestrial impact on cloud cover from the interplanetary electric field (IEF) via the global electric circuit. A primer video on the GEC is below. Clouds blown by the solar wind M Voiculescu et al 2013 Environ. Res. … Continue reading

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Posted in Science, Solar | Tagged , , , , , , , | 213 Comments

Some confirmation of Spencer’s cloud hypothesis – it is getting less cloudy and warmer at the same time

A new paper just published in the Journal of Climate finds that global cloudiness has decreased over the past 39 years from between 0.9 to 2.8% by continent as shown in the figure below: The period of the study is … Continue reading

Posted in Climate sensitivity, clouds, Cosmic rays, Weather | Tagged , , , | 185 Comments

New paper shows negative cloud feedback associated with SAM

A paper published Friday in the Journal of Geophysical Research (GRL) finds that a known and natural atmospheric oscillation, the Southern Annular Mode or SAM, is correlated with observed increases in cloud cover resulting in regional cooling of approximately -2.5C. … Continue reading

Posted in clouds, Southern Annular Mode, Weather | Tagged , , , , , , | 78 Comments

The Sun has changed its character

Guest post by David Archibald A number of solar parameters are weak, and none is weaker than the Ap Index: Figure 1: Ap Index 1932 to 2026 Figure 1 shows the Ap Index from 1932 with a projection to the … Continue reading

Posted in Solar, Spaceweather | Tagged , , , , , , , | 176 Comments

Spencer’s posited 1-2% cloud cover variation found

In a nutshell, with a −1.6%per decade change in cloud cover during 1954–2005, it becomes a climate forcing. While China is not the world, it bears consideration. The Hockey Schtick reports: New paper finds significant, natural decrease in cloudiness over … Continue reading

Posted in Aerosols, Climate sensitivity, clouds, Cosmic rays | Tagged , , , , , , , | 90 Comments

High level clouds and surface temperature

Guest post by Erl Happ The orbit of the Earth’s around the sun is slightly eccentric. The closest point is called the perihelion. On January 4th the Earth is just 147,098,291 km away from the sun. Aphelion occurs July 4th … Continue reading

Posted in clouds | Tagged , , | 138 Comments