Fact Check: "90% of excess heat is trapped in the oceans!"
What We Know
The claim that "90% of excess heat is trapped in the oceans" is supported by multiple scientific sources. Research indicates that the oceans play a crucial role in absorbing heat from the Earth's climate system, primarily due to the accumulation of greenhouse gases in the atmosphere. According to the NOAA Climate.gov, more than 90% of the excess heat trapped in the Earth system due to human-caused global warming has been absorbed by the oceans. This conclusion is reinforced by studies that show ocean heat content has been rising significantly, with the upper layers of the ocean accumulating heat faster than deeper layers (NOAA).
The US EPA also confirms that the warming of the oceans is a direct result of greenhouse gas emissions, which trap heat in the atmosphere. This heat is then absorbed by the oceans, leading to thermal expansion and contributing to rising sea levels. Furthermore, a recent study published in Nature Communications states that approximately 91% of the excess heat trapped by greenhouse gases is stored in the ocean (Nature).
Analysis
The claim that 90% of excess heat is trapped in the oceans is substantiated by robust scientific evidence and consensus among climate scientists. The sources cited are credible and come from reputable organizations and peer-reviewed studies. For instance, the NOAA and the US EPA are authoritative bodies in climate science, providing data that is widely accepted in the scientific community.
The data regarding ocean heat content is derived from various measurement techniques, including satellite observations and in situ sensors like Argo floats, which provide a comprehensive view of temperature changes across different ocean depths (NOAA). This multi-faceted approach enhances the reliability of the findings.
However, it is essential to consider the potential for bias in the interpretation of data. Some critics may argue that the focus on ocean heat content could overshadow other critical aspects of climate change, such as atmospheric warming or land surface temperature changes. Nonetheless, the overwhelming consensus remains that the oceans are the primary heat sink for excess energy trapped by greenhouse gases.
Conclusion
Verdict: True
The claim that "90% of excess heat is trapped in the oceans" is accurate based on extensive scientific research and data. The oceans have absorbed more than 90% of the excess heat resulting from human-induced climate change, as confirmed by multiple credible sources. This absorption plays a significant role in the Earth's climate system and has implications for global sea levels and marine ecosystems.