"Elevated CO2 as a driver of global dryland greening"

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  • " ...Based on 1705 field measurements from 21 distinct sites, a consistent and statistically significant increase in the availability of soil water (11%) was observed under elevated CO2 treatments in both drylands and non-drylands, with a statistically stronger response over drylands (17% vs. 9%). Given the inherent water limitation in drylands, it is suggested that the additional soil water availability is a likely driver of observed increases in vegetation greenness. Scientific Reports 6, Article number: 20716 (2016)"
mjolnir's picture
mjolnir
Joined:
Mar. 3, 2011 11:42 am

Comments

"In some Mediterranean-type ecosystems such as annual-dominated California grasslands, warming has accelerated the decline of canopy greenness because the effects of reduced transpiration losses push the canopy to an earlier senescence26. These facts indicate that the positive effect of CO2 induced water savings may eventually be offset by the negative effect of CO2 induced temperature increases when the temperature increase crosses a certain threshold. Further understanding of this complex feedback process is required." Emphasis mine.

mjolnir's picture
mjolnir
Joined:
Mar. 3, 2011 11:42 am

In the meantime, major population centers in landlocked countries that get their water from melting glacial and mountain ice and snow will be deserts, since it's all already melted.

La Paz baja CA Mexico will be under water in 30 years.

The other La Paz /a-world-without-water/ won big recently against the US. Bolivia rejected the american fascists and took their country back.

douglaslee's picture
douglaslee
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Jul. 31, 2007 3:01 pm

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