Dear All,
As an occasional reader of his blog, I just discovered that Dr. Makarieva recently
https://biototiceration.substack.com/p/seing-forets-throughclouds-a-300
Published a text of a brief for science that, although it was not published by this respectable magazine, might deserve attention.
Therefore, I copied the text of the report below for convenience.
Sincerely
Tomáš
—–
See forests through clouds
Goessling et al. (1) Links the 2023 record heating anomaly to a global decrease in Albedo due to the reduction of low -level cloud cover. What caused the reduction is still clear. Goessling et al. Considered several geophysical mechanisms, including the heating of the ocean surface and the emissions of aerosols in decline, but did not discuss the biosphere. We propose that the interruption of the global biosphero functioning could be a cause, as supported by three lines of evidence that have not yet been considered jointly.
First, the operation of the plant plays a key role in cloud formation (2–7). In a model study, the conversion of the swamp land to the desert increased the global temperature by 8 k due to the reduction of the cloud cover (8). In the Amazon, the low -level cloud cover increases significantly with the photosynthetic activity of the underlying forest (9).
Secondly, in 2023, photosynthesis on land experienced a globally significant interruption, as indicated by the complete disappearance of the land carbon sink (10). Terrestrial ecosystems, which typically absorb approximately a quarter of CO2 anthropogenic emissions, anomically ceased this function. This breakdown was attributed to Canadian forest fires and record drought in the Amazon (11).
Third, Goessling et al. Real into the changes on the oceans, but their maps show that some of the greatest reductions in the cloud cover in 2023 were on land, including Amazonian and Congolian forests. Another cloud reduction access point is evident in Canada. In addition, precipitation on Earth in 2023 had a great negative anomaly, -0.08 mm/day (12).
It is known that the growing pressure on forests induces non-linear feedback, including abrupt changes in the operation of the ecosystem (13-15). Comments of similar strength are unknown in global climatic models (16). Biospheric decomposition in 2023 may have caused a reduction in mass cloud cover that facilitates abrupt warming.
If verified, the good news is that the recent extra heat could decrease if the forests are partially recover. With the many remaining unknowns, we urge the most integrative thought and emphasize the importance of urgently stop forest exploitation to stabilize both the weather and the biosphere (17,18).
Anastassia M. Makarieva, Andrei V. Nefiodov, Antonio D. Nobre, Luz A. Cuartas, Paulo Nobre, Germán Poveda, José A. Marengo, Anja Ramm, Susan A. Masino, Ugo Bardi, Juan F. Salazar, William R. Moomaw, Scott R. Saleska (Authors’ affiliations in https://arxiv.org/abs/2501.17208 )
References cited
1. HF Goessling, T. Rackow, T. Jung, arises from recent global temperature intensified by the Low Registry Planetary Albedo. Science 387 (6729), 68–73 (2024), https://doi.org/10.1126/science.adq7280
2. DF Zhao, et al., Environmental conditions regulate the impact of plants on cloud formation. Nat. Common. 8 (1), 14067 (2017), https://doi.org/10.1038/ncomms14067
3. T. Dor-Schwartz, I. Koren, O. Altararatz, R. Heiblum, about the abundance and common properties of continental, organized (green) clouds. IEEE Trans. Geosci. Sens. 59 (6), 4570–4578 (2021), https://doi.org/10.1109/tgrs.2020.3023085
4. S. Cerasoli, J. Yin, A. Porporate, Forestry cloud cooling effects and reforestation in average latitudes. Proc. Natl Acade Sci. Ee. UU. 118 (33), E2026241118 (2021), https://doi.org/10.1073/pnas. 2026241118
5. G. Duveiller, et al., Revealing the generalized potential of forests to increase the coverage of low level clouds. Nat. Common. 12, 4337 (2021), https: //doi.org10.1038/s41467-021-24551-5
6. R. XU, et al., Contrasting impacts of forests on the roof of clouds based on satellite observations. Nat. Common. 13, 670 (2022), https://doi.org/10.1038/s41467-022-28161-7
7. D. Ellison, J. Pokorný, M. Wild, even colder ideas: about the power of forests to (water the earth and cool the planet. GLOB. Change biol. 30 (2), E17195 (2024), https://doi.org/10.1111/gcb.17195
8. mm Laguë, GR Quetin, WR Boos, reduced terrestrial evaporation increases atmospheric water vapor by generating cloud feedback. Reign. Dasting Res. 18 (7), 074021 (2023), https://doi.org/10.1088/1748-9326/acdbe1.
9. Rh Heiblum, I. Koren, G. Feingold, on the link between the Amazonian forest properties and the fields of clouds of shallow clouds. Atmos. Chem. Phys. 14 (12), 6063–6074 (2014), https://doi.org/10.5194/ ACP-14-6063-2014
10. P. KE, et al., The analysis of the low latency budget reveals a great decrease in the terrestrial carbon sink in 2023. NATL. Sci. Rev. 11 (12), NWAE367 (2024), https://doi.org/10.1093/nsr/nwae367
11. J.-C. Espinoza, et al., The new drought and warmth record in the Amazon in 2023 was related to regional and global climatic characteristics. Sci. Rep. 14 (1), 8107 (2024), https://doi.org/10.1038/s41598-024-58782-5.
12. RF Adler, G. Gu, global precipitation for the year 2023 and how it relates to long -term variations and trends. Atmosphere 15 (5), 535 (2024), https://doi.org/10.3390/atmos15050535
13. DC ZEMP, et al., Loss of Amazonian forests of autoamplified amplitude due to the feedback of the vegetation-atmosphere. Nat. Common. 8, 14681 (2017), https://doi.org/10.1038/ncomms14681
14. AM MAKARIVA, et al., The role of perspiration of the ecosystem in the creation of alternative humidity regimes by influencing the convergence of atmospheric humidity. GLOB. Change biol. 29 (9), 25362556 (2023), https://doi.org/10.1111/gcb.16644
15. BM Flores, et al., Critical transitions in the Amazon forest system. Nature 626 (7999), 555–564 (2024), https://doi.org/10.1038/s41586-023-06970-0
16. WR BOOS, T. Storelvmo, respond to Levermann et al.: Linear scale for monsors based on a well verified balance between adiabatic cooling and the release of latent heat. Proc. Natl Acade Sci. Ee. UU. 113 (17), E2350 – E2351 (2016), https://doi.org/10.1073/pnas.1603626113
17. WR Moomaw, SA Masino, Ek Faison, intact forests in the United States: Prostation mitigates climate change and serves the greatest good. Forehead. For. GLOB. CHANGE 2 (2019), https://doi.org/10.3389/ffgc.2019.00027
18. AM MAKARIVA, AV NEFIODOV, A. RAMMIG, AD NOBRE, REAPRAISAL OF THE GLOBAL CLIMATE PAPER OF NATURAL Forests To improve climate projections and policies. Forehead. For. GLOB. Change 6 (2023), https://doi.org/10.3389/ffgc.2023.1150191
#REALCLIMATE #Nature #Part
