What Are Greenhouse Gases? Understanding Their Impact on Our Planet

In recent decades, environmental issues have become a key part of sustainable development in many areas, such as the automotive and energy industries. Greenhouse gases are a topic that comes up often and is worth exploring in more detail.

This is important because greenhouse gases affect more than just the climate. They also have a big impact on the future of human life. In this article, we'll look at what greenhouse gases are and how they affect our planet.

ALSO READ: Greenhouse Gas Emissions: How Astra Is Working to Reduce the Impact

What Are Greenhouse Gases?

Greenhouse gases are gases that take in and send back heat (infrared radiation) from the Earth's surface, which makes the atmosphere warmer.

This process is called the greenhouse effect. The atmosphere acts like the glass walls of a greenhouse, trapping heat inside. The main types of greenhouse gases are:

• Carbon dioxide (CO₂)
• Methane (CH₄)
• Nitrous oxide (N₂O)
• Fluorinated gases (such as hydrofluorocarbons, or HFCs)

All of these gases come from both natural sources, such as living organisms and volcanic activity, and from human activities, including the burning of fossil fuels, deforestation, and intensive agriculture.

How Do Greenhouse Gases Work?

To see how greenhouse gases work, imagine the Earth's atmosphere as a blanket around the planet. Here's how the process usually happens:

• Sunlight enters the Earth's atmosphere.
• Some of that solar energy is absorbed by the Earth's surface.
• The Earth then releases that energy back as heat (infrared radiation).
• Greenhouse gases absorb some of that heat.
• The heat is reflected back toward the Earth's surface, keeping temperatures warm.

Without this process, the Earth would probably be too cold for life to exist.

What Causes Greenhouse Gas Levels to Rise?

Now that you know what greenhouse gases are, let's look at what causes their levels to rise in the atmosphere. Here are some of the main reasons:

1. Burning Fossil Fuels

Industries, transportation, and power plants that use coal, oil, and natural gas are the largest sources of carbon dioxide emissions. This includes running cars, factories, and traditional power stations.

2. Deforestation

Cutting down large numbers of trees means fewer trees are left to take in carbon dioxide from the air. This causes CO₂ levels in the atmosphere to keep rising.

3. Waste and Landfills

When organic waste breaks down in landfills, it releases methane, especially if the landfill is not managed well.

The Impact of Greenhouse Gases on the Earth

Higher levels of greenhouse gases have serious effects on many parts of life. Here are some of the main impacts:

1. Global Climate Change

Greenhouse gases raise global temperatures, which can lead to big changes in weather, like unpredictable rainy seasons, heat waves, and stronger storms.

2. Rising Sea Levels

When polar ice melts because of global warming, sea levels rise. This is a serious risk for coastal areas and small islands that could end up underwater.

3. Threats to Biodiversity

Many animals and plants can't adapt fast enough to changing temperatures, which increases their risk of extinction.

4. Human Health Concerns

Worsening air quality due to pollutant emissions takes a toll on respiratory health. Rising temperatures can also accelerate the spread of tropical diseases, such as malaria and dengue fever, into regions that were previously unaffected.

ALSO READ: What Is Decarbonization? The Path Toward Net Zero Emissions

Solutions for Reducing Greenhouse Gas Emissions

Cutting greenhouse gas emissions isn't easy, but it can be done. Here are some practical steps anyone can take:

1. Switch to Renewable Energy

Using renewable energy like solar, wind, and water power can greatly reduce CO₂ emissions. Investing in clean energy is important for a sustainable future.

2. Improve Energy Efficiency

You can save energy by switching to LED bulbs, using energy-saving appliances, and setting your air conditioner to a moderate temperature.

3. Plant and Preserve Forests

Planting new trees and protecting forests are natural ways to absorb CO₂ from the air. One tree can take up to 21 kilograms of CO₂ each year.

4. Waste Management and Recycling

Managing waste properly and following the 3R principle, including reduce, reuse, and recycle, can help lower emissions from landfills.

Why Are Greenhouse Gases a Critical Issue for Indonesia?

Indonesia is especially at risk from climate change because it has a long coastline and many small islands. The country faces several dangers, such as:

• Rising sea levels
• Coastal flooding from tidal surges
• Shifts in rainfall patterns
• Declining agricultural productivity
• More frequent and intense forest and land fires

Indonesia's Meteorology, Climatology, and Geophysics Agency (BMKG) actively measures greenhouse gas concentrations through its atmospheric monitoring network to track climate change trends across the country.

Astra's Role in Reducing Greenhouse Gases

As a company with a significant role in the national economy, Astra remains firmly committed to responsible and sustainable business practices. This commitment is reflected in the Astra 2030 Sustainability Aspirations initiative.

Astra started this initiative to help the Astra Group become more sustainable by 2030 and in the future. It includes 10 sustainability goals based on Astra's new sustainability framework.

This framework brings sustainability into Astra's Triple-P Roadmap Strategy, which focuses on Portfolio, People, and Public Contribution. With this plan, Astra aims to become a more sustainable and resilient company that benefits both the planet and people.

Within its portfolio, the Astra 2030 Sustainability Aspirations includes several key targets.

• Reduce Astra Group scope 1 and 2 greenhouse gas emissions by 30% from the 2019 baseline.
• Increase the renewable energy mix to reach 50%.
• Reduce water withdrawal intensity by 15% from the 2019 baseline.
• Achieve solid waste recycling and recovery rates of up to 99%.
• Grow non-coal revenue to reach 88%.
  
  

FAQs About Greenhouse Gases

1. What are greenhouse gases?

Greenhouse gases are gases that trap heat in the atmosphere and cause the greenhouse effect, contributing to global warming.

2. Are greenhouse gases harmful?

Yes. While some greenhouse gases occur naturally, excessive concentrations driven by human activity can still cause extreme climate change and pose serious threats to life.

3. Which greenhouse gases are the most dangerous?

Gases such as CO₂, CH₄, and N₂O are among the most harmful because of their significant role in driving global warming.

4. How can we help reduce greenhouse gases?

You can start by saving energy in your daily life, and later support bigger efforts like using renewable energy and joining tree-planting programs.

ALSO READ: Climate Change Mitigation: From Policy to Action on the Ground

Minimize the Impact of Greenhouse Gases with Astra's Green Programs

Learning about greenhouse gases is the first step to tackling climate change. These gases are a big reason why the Earth's temperature is rising and why we face many environmental problems.

But with the right knowledge and steady teamwork, we can lower their impact. Astra shows this commitment by always working to be part of the solution through new ideas and social responsibility.

This dedication is evident in the Astra Sustainability Report, which clearly demonstrates Astra's commitment to achieving the Astra 2030 Sustainability Aspirations.