今の地球は人類による温暖化の状態になっているのか？

Grok 4.20

Vote: Yes

Scientific consensus from IPCC assessments and multiple independent datasets shows global temperatures have risen approximately 1.1°C since pre-industrial times. Human emissions of CO2 and other greenhouse gases from fossil fuels, deforestation, and industry are the dominant cause, as confirmed by isotopic analysis and climate modeling that matches observations only when anthropogenic factors are included. Natural variability alone cannot explain the rapid rate of warming or the specific patterns observed, such as stratospheric cooling alongside tropospheric warming.

GPT-5.4

Vote: Yes

観測事実と原因分析の両方から、現在の地球は人類活動による温暖化の状態にあると判断するのが妥当です。 全球平均気温は産業革命前より明確に上昇しており、海洋の熱容量増加、氷床や氷河の縮小、海面上昇など、温暖化と整合的な指標が広く確認されています。 原因についても、大気中のCO2やメタンの増加は化石燃料の燃焼、森林減少、農業など人為起源と一致します。放射強制力の評価や気候モデルでは、自然要因だけでは近年の上昇幅を説明できません。 IPCCをはじめとする主要な科学機関は、人間の影響が現在の温暖化の主因であると結論づけています。したがって答えはYesです。

Sonar Pro

Vote: Yes

The scientific evidence overwhelmingly supports that Earth is currently experiencing human-caused warming. Multiple authoritative sources confirm that global average temperature has risen approximately 1.1–1.5°C since pre-industrial times[1][4], with the most recent 30-year periods being warmer than any decade since 1850[3]. This warming is directly attributed to increased greenhouse gas concentrations—primarily carbon dioxide and methane from fossil fuel combustion and human activities[2][9]. The mechanism is well-established: excess greenhouse gases trap heat that would otherwise escape to space, creating a warming effect[7][8]. The IPCC and Japanese government environmental agencies all document this human-caused warming as current reality, not future projection[3]. The data shows this is not a natural fluctuation but an accelerating trend linked to industrial activity.

Kimi K2.5

Vote: Yes

The overwhelming scientific consensus confirms that Earth is currently experiencing anthropogenic global warming. Organizations including the IPCC, NASA, and major national science academies worldwide attribute the observed warming unequivocally to human activities. Multiple independent lines of evidence support this conclusion. Global average temperatures have risen approximately 1.1°C since pre-industrial times, with the most rapid warming occurring in recent decades. Atmospheric CO₂ concentrations have increased by over 50% since 1750, primarily from fossil fuel combustion and land-use changes. The physical mechanism is well-established: greenhouse gases trap outgoing infrared radiation. Satellite measurements, ocean heat content data, and melting ice records all confirm this energy imbalance. Climate models demonstrate that observed warming cannot be explained by natural factors (solar variations, volcanic activity) alone, but match historical records precisely when human emissions are included. Without human influence, the current warming trend would be impossible to explain. The correlation between emissions and temperature rise, combined with isotopic analysis of atmospheric carbon, provides definitive attribution to human activities.

Gemini 3.1 Pro

Vote: Yes

現在、地球が人類の活動に起因する温暖化の状態にあることは、国際的な科学的合意となっています。 気候変動に関する政府間パネル（IPCC）の最新の報告書でも、「人間の影響が大気、海洋及び陸域を温暖化させてきたことには疑う余地がない」と明確に結論付けられています。化石燃料の燃焼や森林伐採などの人間活動により、温室効果ガスの大気中濃度が産業革命以降急激に増加しました。 この温室効果ガスの増加が地球全体の平均気温の上昇を引き起こしており、海面上昇、氷河の融解、異常気象の頻発など、世界中でその物理的な影響が観測されています。したがって、現在の地球が人類による温暖化の状態にあることは明確な科学的事実です。

DeepSeek V3.2

Vote: Yes

The overwhelming scientific consensus, established by bodies like the Intergovernmental Panel on Climate Change (IPCC), confirms that human activities are the dominant cause of observed global warming since the mid-20th century. This is based on extensive peer-reviewed research linking rising greenhouse gas concentrations—primarily from fossil fuel use and deforestation—to increased global temperatures. Concrete evidence includes record-breaking global temperature rises, accelerating ice melt in polar regions, sea level rise, and increased frequency of extreme weather events. These trends align with climate models that incorporate human influences, while natural factors alone cannot explain the magnitude of recent warming. Therefore, the current Earth is unequivocally in a state of warming driven by human actions, warranting a 'Yes' vote.

Claude Opus 4

Vote: Yes

現在の科学的コンセンサスは、地球が人為的な温暖化の状態にあることを圧倒的に支持しています。 IPCC（気候変動に関する政府間パネル）の第6次評価報告書（2021-2023年）では、「人間活動が主に温室効果ガスの排出を通じて地球温暖化を引き起こしてきたことは疑いの余地がない（unequivocal）」と明確に述べられています。 産業革命以降、大気中のCO2濃度は約280ppmから420ppm以上に増加し、地球の平均気温は約1.1～1.2℃上昇しました。この変化の速度は、過去数十万年の自然な気候変動と比較して極めて急速です。 氷床コアデータ、海面上昇の観測、北極海の海氷減少、世界各地の氷河後退、極端な気象現象の頻度増加など、複数の独立した証拠が人為的温暖化を裏付けています。 太陽活動や火山噴火などの自然要因だけでは、20世紀後半以降の温暖化の規模とパターンを説明することはできず、人為的な温室効果ガスの排出を考慮して初めて観測データと整合します。 世界中の主要な科学機関（NASA、NOAA、各国の学術機関など）がこの結論を支持しており、科学的な議論の段階は「温暖化が起きているか」ではなく「どの程度の影響をどう緩和するか」に移っています。

Final Summary

The AI Roundtable reached a rare and absolute consensus on the question of climate change, with all seven models voting 'Yes' with zero dissent. While models like Claude Opus 4 and Gemini 3.1 Pro anchored their logic in the 'unequivocal' findings of the IPCC, others like Kimi K2.5 and Grok 4.20 pointed to specific physical evidence, such as isotopic analysis and atmospheric energy imbalances, to show that human activity is the only viable explanation for current warming trends.

No agreement after 1 rounds of discussion. Final vote: Yes: 7

Strongest Arguments

• Yes: The observed warming matches climate models only when human-induced greenhouse gas emissions are included; natural factors like solar cycles and volcanic activity alone are mathematically insufficient to explain the rapid temperature spike and specific patterns like stratospheric cooling.