New tree ring studies show no human impact on global precipitation patterns

By isabelle // 2026-05-12

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The Department of Energy report confirms that climate models are wild exaggerations and that CO2 boosts global plant growth by 25 to 50 percent.
No acceleration in U.S. extreme weather can be directly tied to CO2, with solar activity and natural cycles being consistently downplayed.
New tree ring studies over 700 years show droughts were more severe before 1950, directly contradicting claims of human-driven drying.
Satellite data from 2001 to 2020 reveals rainfall intensity has declined or remained flat despite a record rise in CO2 emissions.
United Nations reports themselves express low confidence that human activity has increased droughts, yet media narratives ignore this disconnect.

Three new peer-reviewed tree ring reconstructions covering up to 700 years of climate history have found no precipitation pattern that can be linked to human activity or post-1950 increases in carbon dioxide. The studies, spanning Scandinavia, Asia and Central Greece, document that natural variability has dominated the paleoclimate record for centuries. Droughts were actually more frequent and severe before 1950 than after, directly contradicting claims that modern climate change is worsening dry conditions worldwide.

Megadroughts more common before CO2 increases

The research published in 2025 and 2026 by Stridbeck, Cai, and Sakalis and Kastridis examined tree ring data from sub-Arctic Sweden, the Tibetan Plateau, and Central Greece. On the Tibetan Plateau, three megadroughts occurred between 1865 and 1950, while only one occurred from 1950 to 2014. Severe drought years in 1735 and 1914 were worse than anything observed in 2009, a year that prompted emergency responses and caused millions in economic losses.

Satellite data confirms rainfall intensity declining

A separate satellite study covering 2001 to 2020 found that rainfall intensity has declined or remained flat globally, despite CO2 rising from 371 parts per million to 414 ppm. During that period, humans emitted 38 percent of all CO2 ever produced since the Stone Age. Yet small and medium precipitation systems actually decreased in intensity across all continents and seasons. Larger systems showed no meaningful trend. The findings stand in dramatic opposition to United Nations climate models, which predicted that extreme rainfall would increase with warming. The Clausius-Clapeyron relationship, which states warmer air holds more moisture, has been cited as settled science. But real-world data tells a different story. As the CFACT analysis of the satellite study noted, "If there is a climate change signal hidden under a declining natural trend, the problem is that those other mysterious forces are more powerful than CO2, yet we have no idea what they are or how to predict them."

UN reports contradict media narrative

Despite headlines from outlets like Time magazine claiming climate change is worsening droughts, the United Nations Intergovernmental Panel on Climate Change itself expresses low confidence that human activity has increased hydrological or meteorological droughts. The IPCC's Sixth Assessment Report divides the world into 47 regions and finds that drought may have increased in 12 of those regions, but assigns medium confidence to a human role in only two of them. Even the U.N. acknowledges "high confidence" in increasing precipitation trends across mid-latitudes. The disconnect between what climate agencies say in their own reports and what they tell the media has become increasingly difficult to ignore. The Tibetan Plateau, often called Asia's "water tower," sustains water resources for billions of people. Understanding long-term drought dynamics is critical for policy decisions. But instrumental records are short. Tree rings provide annual-resolution data stretching back centuries, offering context that computer models cannot replicate. The 2009 drought on the southeastern Tibetan Plateau triggered the region's first Level III emergency response and cost approximately $8.6 million in direct losses. But when placed in a 295-year context, that drought was not unusual. The reconstruction revealed seven megadroughts since 1720, with three occurring in the 20th century in 1914–1929, 1939–1950, and 1979–1998.

Policy implications ignored

These findings raise serious questions about the trillions of dollars in proposed climate spending. If natural variability, not human CO2, drives precipitation patterns, then policies based on the assumption that humans control the water cycle are built on false premises. According to Climate Realism, the United Nations takes in more than $50 billion in annual revenue, yet core humanitarian programs go unfunded. The organization closed clean water initiatives in Yemen in 2019 citing a lack of available funds, even as it continues to demand more money for climate action. What the world needs is not another climate summit or carbon tax, but an honest accounting of what the data actually show. The tree rings do not lie. They record centuries of drought and deluge, heat and cold, long before factories or automobiles. And they tell a story that today's climate experts seem unwilling to hear: nature still holds the reins. Sources for this article include: WattsUpWithThat.com CP.Copernicus.org ScienceDirect.com CFact.org ClimateDepot.com