Tuesday, 8 July 2025

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 Understanding Global Warming

Global warming refers to the long-term rise in Earth's average surface temperature due to human activities, primarily the emission of greenhouse gases like carbon dioxide and methane.

The current rate of warming is approximately 0.2°C per decade, with the decade 2014-2023 warming to an average 1.19°C above the pre-industrial baseline.


Causes of Global Warming

- *Greenhouse Gas Emissions*: Human activities like burning fossil fuels (coal, oil, and natural gas) and deforestation release large amounts of CO2 and other greenhouse gases into the atmosphere, trapping heat and leading to global warming.

- *Industrial Processes*: Industrial processes, transportation, and manufacturing also contribute to greenhouse gas emissions.

- *Deforestation*: The clearance of forests for agriculture, urbanization, and other purposes reduces the ability of forests to act as carbon sinks.


Effects of Global Warming

- *Rising Sea Levels*: Melting glaciers and ice sheets, along with the thermal expansion of seawater, contribute to sea level rise, posing a threat to coastal communities and ecosystems.

- *Extreme Weather Events*: Global warming leads to more frequent and intense heatwaves, droughts, and heavy rainfall events.

- *Loss of Biodiversity*: Changes in temperature and precipitation patterns alter ecosystems, leading to the loss of biodiversity and extinction of species.

- *Health Impacts*: Climate change increases the spread of diseases, heat stress, and other health problems ¹ ² ³.


Mitigating Global Warming

- *Reducing Emissions*: Transitioning to renewable energy sources, improving energy efficiency, and implementing carbon capture and storage technologies can reduce greenhouse gas emissions.

- *Sustainable Land Use*: Practices like reforestation, sustainable agriculture, and conservation can help sequester carbon dioxide.

- *Climate-Resilient Infrastructure*: Building infrastructure that can withstand the impacts of climate change, such as sea level rise and extreme weather events, is crucial for adapting to a changing climate.


Projected Future Changes

- *Temperature Increase*: If greenhouse gas emissions continue to rise, the global average temperature is projected to increase by 2.1-3.5°C under an intermediate emissions scenario and 3.3-5.7°C under a high-emissions scenario by 2100.

- *Sea Level Rise*: Sea levels are expected to continue rising, with projected increases of 1-6.6 feet by 2100, depending on the level of emissions and ice sheet melting ².

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