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March 24, 2010 – Scientists explain another bad thing on the horizon, this time on soil.

Thirteen years ago, on this day, March 24, 2010, another depressing article appeared in Nature. Why do they never print positive stories, eh?

Even soil feels the heat 

Twenty years of field studies reveal that as the Earth has gotten warmer, plants and microbes in the soil have given off more carbon dioxide. So-called soil respiration has increased about one-tenth of 1 percent per year since 1989, according to an analysis of past studies in today’s issue of Nature.

The scientists also calculated the total amount of carbon dioxide flowing from soils, which is about 10 -15 percent higher than previous measurements. That number — about 98 petagrams of carbon a year (or 98 billion metric tons) — will help scientists build a better overall model of how carbon in its many forms cycles throughout the Earth. Understanding soil respiration is central to understanding how the global carbon cycle affects climate.

https://www.pnnl.gov/news/release.aspx?id=786

The amount of carbon dioxide in the air was roughly 391.3ppm. As of 2023 it is 419ppm, but check here for daily measures. 

The context was that this part of the ongoing work, scientific work in biological systems, is pointing out that the impacts of climate change are on the whole going to come faster and harder than we previously thought. Not always but usually.

Biologists had been looking at climate change and going “hmm” since the mid 1950s (see the great G. Evelyn Hutchinson).

What I think we can learn from this

We need to remember that there is the risk as James Hansen puts it of being too reticent, as per his May 2007 thoughts (link here).

What happened next

We kept running the big experiment. And the results are coming in.

What do you think? Does this pass the ‘so what?’ threshold? Have I got facts wrong? Interpretation wrong?  Please do comment on this post, unless you are a denialist, obvs..