Related Experiment Video
Updated: Apr 22, 2026

Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.
Published on: June 4, 2021
Dramatic increase in ecosystem respiration causes record-breaking atmospheric CO2 growth rate in 2024
Guanyu Dong1, Fei Jiang2,3,4, Weimin Ju1
1Jiangsu Provincial Key Laboratory for Advanced Remote Sensing and Geographic Information Technology, International Institute for Earth System Science, Nanjing University, Nanjing, China.
None:
2024 is the hottest year on record, accompanied by extreme precipitation, droughts and fires. The global atmospheric CO2 growth rate in 2024 reached a historic high of 3.73 ppm yr-1, significantly surpassing the previous record set during the 2015/16 El Niño event. Here, we investigate the causes and underlying mechanisms of this record-high growth rate by combining satellite-based atmospheric inversions and estimates of gross primary production and fire emissions. We find that the record-high CO2 growth rate is due to large reductions in the land CO2 sink. This is dominated by a dramatic increase in total ecosystem respiration, which occurred primarily in grass and shrub lands, owing to compound hot-wet climatic conditions in 2024. Given the projected increase in the frequency and intensity of compound pluvial-hot extremes under warming, changes in ecosystem respiration will become more drastic and cause positive feedback to climate warming.
Related Concept Videos
Global Climate Change
Microbes and Climate Change
The Carbon Cycle
Cellular Respiration
Carbon-dioxide Fixation
Chemical Factors Affecting Respiration Centers
CO2 has a potent influence on respiration and is strictly regulated....

