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Dambar Singh Kadayat
Priyanshu Srivastava
Keywords:
Carbon Dioxide (CO₂); Methane (CH₄); Atmospheric Concentration; Temperature Anomaly.
Abstract:
Global warming represents one of the most significant environmental challenges of the present century, driven primarily by the increasing accumulation of greenhouse gases in the atmosphere. The present study examines long-term trends in global mean temperature, atmospheric carbon dioxide (CO₂) concentration, and methane (CH₄) growth rates using observational data reported in the World Meteorological Organization (WMO)-referenced material. The analysis covers global mean temperature from 1850 to 2025, atmospheric CO₂ concentrations from 1984 to 2024, and annual growth rates of methane concentrations from 1985 to 2024. The findings reveal a substantial increase in global mean temperature anomaly, from 0.0613°C in 1850 to 1.4158°C in 2025, representing an increase of approximately 1.35°C. The year 2024 recorded a temperature anomaly of 1.538°C, the highest value reported in the analysed series. Atmospheric CO₂ concentration increased from 344.6 ppm in 1984 to 423.9 ppm in 2024, reflecting a net rise of 79.3 ppm. Methane growth rates exhibited considerable interannual variability, with a marked resurgence in recent decades and a peak annual increase of 17 ppb in 2021. Collectively, these observations demonstrate persistent global warming alongside sustained greenhouse gas accumulation. The study highlights the importance of long-term atmospheric monitoring, greenhouse gas emission reduction, and strengthened climate mitigation strategies to address the continuing transformation of the global climate system.
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International Journal of Recent Research and Review
ISSN: 2277-8322
Vol. XIX, Issue 3
September 2026
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PUBLISHED
September 2026
ISSUE
Vol. XIX, Issue 3
SECTION
Articles
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