Draft script:
A paper in Phys.Org published 31 March 2024 is titled Planting trees in wrong places heats the planet: Study. The study referenced in the title appeared in Nature Communications on 26 March 2024. It was produced by 11 scholars.
One of the study’s co-authors was quoted in the Phys.Org article: “There are some places where putting trees back leads to net climate negative outcomes.” In fact, the peer-reviewed paper indicates that reforestation projects that failed to include albedo in the analysis overestimated the benefit to the climate by 20 to 80%.
Hot, humid environments such as the Amazon Basin and central Africa store abundant carbon with little change to albedo. These are ideal places for reforestation. On the other hand, temperate grasslands and savannas sequester and store relatively little carbon and can negatively alter albedo. As a result, promises of enhanced carbon capture tend to be overblown in these areas.
The co-author quoted above indicated in the Phys.Org article that even projects in the best locations were probably delivering 20% less cooling than estimated when albedo changes are included in the analysis. Although there are good reasons beyond carbon sequestration to plant trees, it is important to focus reforestation efforts in proper locations. Given the limited money available for reforestation projects throughout the world, the Phys.Org article and the peer-reviewed paper indicate the importance of prioritizing projects.
The peer-reviewed, open-access paper in Nature Communications is titled Accounting for albedo change to identify climate-positive tree cover restoration. It was published 6 March 2024. I’ll read the entire Abstract: “Restoring tree cover changes albedo, which is the fraction of sunlight reflected from the Earth’s surface. In most locations, these changes in albedo offset or even negate the carbon removal benefits with the latter leading to global warming…
…click on the above link to read the rest of the article…
