Monitoring global CO2 emissions

GCB2024 update

The 2024 version of the GCB data set (GCB2024) was released by Global Carbon Project in December, 2024. I updated the statistical analyses on the budget imbalance data, performed in Bennedsen (2021), to include this new data set; the details can be found in this pdf.

The main statistical test proposed in Bennedsen (2021) is a sequential hypothesis test for whether the GCB data are compatible with the carbon budget equation. Below (GCB2021--GCB2023 updates), the first three statistical tests in the sequence are performed using the GCB2021, GCB2022, and GCB2023 data sets. Here, we perform the fourth statistical test in the sequence using the GCB2024 data set; the output can be found in Figure 4 below. As can be seen, the null cannot be rejected, meaning that there is no statistical evidence for incompatibility between the GCB2021-GCB2024 data sets and the carbon budget equation.

GCB2023 update

The 2023 version of the GCB data set (GCB2023) was released by Global Carbon Project in December, 2023. I updated the statistical analyses on the budget imbalance data, performed in Bennedsen (2021), to include this new data set; the details can be found in this pdf.

The main statistical test proposed in Bennedsen (2021) is a sequential hypothesis test for whether the GCB data are compatible with the carbon budget equation. Below (GCB2021 and GCB2022 updates), the first two statistical tests in the sequence are performed using the GCB2021 and GCB2022 data sets. Here, we perform the third statistical test in the sequence using the GCB2023 data set; the output can be found in Figure 3 below. As can be seen, the null cannot be rejected, meaning that there is no statistical evidence for incompatibility between the GCB2021-GCB2023 data sets and the carbon budget equation.

GCB2022 update

The 2022 version of the GCB data set (GCB2022) was released by Global Carbon Project on November 11, 2022. I updated the statistical analyses on the budget imbalance data, performed in Bennedsen (2021), to include this new data set; the details can be found in this pdf.

The main statistical test proposed in Bennedsen (2021) is a sequential hypothesis test for whether the GCB data are compatible with the carbon budget equation. Below (GCB2021 update), the first statistical test in the sequence is performed using the GCB2021 data set. Here, we perform the second statistical test in the sequence using the GCB2022 data set; the output can be found in Figure 2 below. As can be seen, the null cannot be rejected, meaning that there is no statistical evidence for incompatibility between the GCB2021 and GCB2022 data sets and the carbon budget equation.

GCB2021 update

The 2021 version of the GCB data set (GCB2021) was released by Global Carbon Project on November 4, 2021. I updated the statistical analyses on the budget imbalance data, performed in Bennedsen (2021), to include this new data set; the details can be found in this pdf.

The main statistical test proposed in Bennedsen (2021) is a sequential hypothesis test for whether the GCB data set is compatible with the carbon budget equation. Using the GCB2021 data set, we perform the initial statistical test; the output can be found in Figure 1 below. As can be seen, the null cannot be rejected, meaning that there is no statistical evidence for incompatibility between the most recent GCB2021 data set and the carbon budget equation.