The Keeling Curve 2D: Unraveling the Seasonal and Long-Term…

What is the Keeling Curve?

The Keeling Curve, named after Charles David Keeling who began measuring atmospheric CO2 at Mauna Loa in Hawaii in 1958, represents the long-term trend of increasing concentrations of carbon dioxide (CO2) in Earth's atmosphere. This curve is a critical indicator of anthropogenic climate change and has become synonymous with global warming.

The 2D version simplifies this complex data into a more accessible format, highlighting both the seasonal variations and the underlying long-term increase.

Seasonal Fluctuations and CO2 Breathing

During spring and summer in the Northern Hemisphere, plants grow rapidly, absorbing large amounts of atmospheric CO2. This leads to a decrease in CO2 levels, creating a sawtooth pattern on the Keeling Curve. The amplitude of this sawtooth can be adjusted using the seasonal-amplitude slider.

As winter approaches, plant growth slows down and CO2 is released back into the atmosphere, causing an increase in concentrations.

live demo · related simulation● LIVE

Long-Term Increase Due to Human Activities

The long-term upward trend on the Keeling Curve is primarily due to human activities such as burning fossil fuels, deforestation, and industrial processes. These actions release significant amounts of CO2 into the atmosphere.

Even with seasonal fluctuations, this trend has been steadily increasing for over six decades, indicating a persistent rise in atmospheric CO2 levels.

Interactive Exploration

The 2D interactive model allows users to manipulate time and observe how different factors affect the Keeling Curve. By adjusting the seasonal-amplitude slider, one can see the impact of varying land vegetation extent on CO2 concentrations.

Users can also control the speed at which time progresses or pause/resume the simulation to study specific periods in detail.

Frequently asked questions

What does the Keeling Curve show?

The Keeling Curve shows the long-term trend of increasing atmospheric CO2 concentrations, with seasonal fluctuations superimposed on this trend.

Why is it important to study the Keeling Curve?

Studying the Keeling Curve helps us understand the impact of human activities on Earth's atmosphere and provides crucial data for climate modeling and policy-making.

How do seasonal fluctuations affect CO2 levels?

Seasonal fluctuations, primarily due to plant growth in the Northern Hemisphere during spring and summer, cause a decrease in atmospheric CO2 concentrations, while winter releases more CO2 back into the atmosphere.

What causes the long-term increase in CO2 levels?

The long-term increase is mainly caused by human activities such as burning fossil fuels, deforestation, and industrial processes that release large amounts of CO2 into the atmosphere.

Try it live

Everything above runs in your browser — open Keeling Curve 2D — Atmospheric CO2 Breathing (Sawtooth Model) and change the parameters while it is running. Nothing is installed, nothing is uploaded, the whole model lives in one tab.

▶ Open Keeling Curve 2D — Atmospheric CO2 Breathing (Sawtooth Model) simulation

The Keeling Curve 2D: Unraveling the Seasonal and Long-Term Trends of Atmospheric CO2