A highlight of recent research supporting the climate realist perspective #5

I have come across two scientific papers published recently, both of which support the climate realist perspective, and thought them of such significance that I should share them here, in my climate realist paper update series of blog posts.

First is The response of clouds and aerosols to cosmic ray decreases (press release here), published in Journal of Geophysical Research – Space Physics. It argues that clouds and aerosols respond strongly to Forbush Decreases, large ejections of radiation and plasma which decrease incoming cosmic ray numbers, and that this response is likely due to the ionizing effect of cosmic rays. In addition, it finds that solar UV radiation’s effect on clouds is negligible. This supports the climate realist notion that there is a real effect of cosmic rays on clouds, and thus temperature. Notable authors on this paper include Drs. Henrik Svensmark and Nir Shaviv, two proponents, in my opinion, of the climate realist perspective or something near it. There is a press release for the paper here.

belgrade_fig51

The response of diurnal temperature range (as influenced by cloud cover) to Forbush Decreases. From Dragic et al. 2011.

Second is Anthropogenic impact on Antarctic surface mass balance, currently masked by natural variability, to emerge by mid-century (press release here), published in Environmental Research Letters. It argues that an anthropogenic-induced increase in snowfall over Antarctica will have a positive effect on Antarctic ice surface mass balance and offset over 60% of the possible sea level rise from increasing temperatures. This is great news, and it supports the climate realist perspective by helping diminish alarm over sea level rise projections, since Antarctica, which has reportedly gained ice mass recently, is a potentially enormous contributor to coming sea level rise. However, currently the snowfall increase is still masked by natural variability, and the authors expect an anthropogenic signal to emerge by mid-century.

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