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The Global Carbon Project shows that fossil CO2 emissions will continue to rise in 2024. There is no sign of the rapid and substantial decline in emissions that would be needed to limit the impact of climate change
Nitrogen fertilizers and nitrogen oxides from fossil fuels pollute the air and drinking water, lead to the over-fertilization of water bodies and terrestrial ecosystems, reduce biodiversity and damage the ozone layer. On balance, however, they have a cooling effect on the climate.
Anthropogenic emissions of nitrous oxide (N2O), a much more potent greenhouse gas per molecule than carbon dioxide or methane, increased by around 40% between 1980 and 2020. In 2020, anthropogenic emissions into the atmosphere reached more than 10 million tons per year, according to the new report "Global Nitrous Oxide Budget 2024" by the Global Carbon Project.
A recent study published in Nature, co-authored by Sönke Zaehle, suggests that eucalyptus trees do not benefit from rising CO2. Increased CO2 levels cause soil microorganisms to hold on to their phosphorus. This soil mineral, which is essential for tree growth, is therefore less available.
Removing a tonne of CO2 from the air and thus undoing a tonne of emissions? Doesn't quite work, says a study. And provides four objections in view of Earth systems.
The new report by the Global Carbon Project shows: Fossil CO2 emissions will reach a record high in 2023. If emissions remain this high, the carbon budget that remains before reaching the 1.5°C limit will probably be used up in seven years. Although emissions from land use are decreasing slightly, they are still too high to be compensated by renewable forests and reforestation.
The international Cabo Verde Atmospheric Observatory (CVAO) is being further expanded: The President of the Republic of Cabo Verde José Maria Neves and German President Frank-Walter Steinmeier laid the foundation stone on Thursday for a new laboratory building on São Vicente, one of the Cape Verde Islands off Africa. The Max Planck Institute for Biogeochemistry was involved in the construction of the station and has since been conducting long-term measurements of the greenhouse gases methane, carbon dioxide and nitrous oxide, among others, at the CVAO.
Researchers at University of California and Max-Planck Institute for Biogeochemistry have created a more accurate model of global carbon cycling. The model better accounts for the contributions of Earth’s terrestrial ecosystems to atmospheric concentrations of the greenhouse gas carbon dioxide, a major source of uncertainty for scientists tallying global emissions.
End-of-dry-season CO2 pulses recur each year in the atmosphere above the Australian continent. Analyses show that CO2 emissions spike when heavy rain falls on dried-out soil, thus activating microorganisms in that soil. The findings suggest that dry regions have a greater influence on the variations in the global carbon cycle than previously thought.
Within the framework of IAGOS, several projects for the realization of IAGOS infrastructure were carried out at the MPI-BGC under the leadership of Dr. Christoph Gerbig starting in 2005. In particular, the team developed the system for the simultaneous detection of the greenhouse gases carbon dioxide (CO2), methane (CH4), carbon monoxide (CO) and water for continuous application on airliners.
The sources and sinks of greenhouse gases in Germany are to be better monitored in future. This is the goal of the Integrated Greenhouse Gas Monitoring System (ITMS) for Germany, which was officially launched with a three-day meeting from 18 to 20 October 2022 at the Max Planck Institute for Biogeochemistry in Jena. The ITMS is funded by the German Federal Ministry of Education and Research (BMBF) and aims to provide the German government and the public with reliable information on the state and development of greenhouse gas fluxes.