Sarquis, A.; Sierra, C. A.: Information content in time series of litter decomposition studies and the transit time of litter in arid lands. Biogeosciences 20 (9), pp. 1759 - 1771 (2023)
Giraldo, J. A.; Valle, J. I. d.; González-Caro, S.; David, D. A.; Taylor, T.; Tobón, C.; Sierra, C. A.: Tree growth periodicity in the ever-wet tropical forest of the Americas. Journal of Ecology 111 (4), pp. 889 - 902 (2023)
Sierra, C. A.; Quetin, G. R.; Metzler, H.; Mueller, M.: A decrease in the age of respired carbon from the terrestrial biosphere and increase in the asymmetry of its distribution. Philosophical Transactions of the Royal Society of London - Series A: Mathematical Physical and Engineering Sciences 381 (2261), 20220200 (2023)
Wells, J. M.; Crow, S. E.; Sierra, C.; Deenik, J. L.; Carlson, K. M.; Meki, M. N.; Kiniry, J.: Edaphic controls of soil organic carbon in tropical agricultural landscapes. Scientific Reports 12, 21574 (2022)
Salazar, A.; Sanchez, A.; Dukes, J. S.; Salazar, J. F.; Clerici, N.; Lasso, E.; Sanchez-Pacheco, S. J.; Rendon, A. M.; Villegas, J. C.; Sierra, C.et al.; Poveda, G.; Quesada, B.; Uribe, M. R.; Rodríguez-Buritica, S.; Ungar, P.; Pulido-Santacruz, P.; Ruiz-Morato, N.; Arias, P. A.: Peace and the environment at the crossroads: Elections in a conflict-troubled biodiversity hotspot. Environmental Science and Policy 135, pp. 77 - 85 (2022)
Sarquis, A.; Siebenhart, I. A.; Austin, A. T.; Sierra, C. A.: Aridec: an open database of litter mass loss from aridlands worldwide with recommendations on suitable model applications. Earth System Science Data 14 (7), pp. 3471 - 3488 (2022)
Vásquez, M.; Lara, W.; del Valle, J. I.; Sierra, C.: Reconstructing past fossil-fuel CO2 concentrations using tree rings and radiocarbon in the urban area of Medellín, Colombia. Environmental Research Letters 17 (5), 055008 (2022)
Chanca, I.; Trumbore, S. E.; Macario, K.; Sierra, C.: Probability distributions of radiocarbon in open linear compartmental systems at steady-state. Journal of Geophysical Research: Biogeosciences 127 (3), e2021JG006673 (2022)
Azizi-Rad, M.; Guggenberger, G.; Mad, Y.; Sierra, C. A.: Sensitivity of soil respiration rate with respect to temperature, moisture and oxygen under freezing and thawing. Soil Biology and Biochemistry 165, 108488 (2022)
Heckman, K.; Hicks Pries, C. E.; Lawrence, C. R.; Rasmussen, C.; Crow , S. E.; Hoyt, A. M.; von Fromm, S. F.; Shi, Z.; Stoner, S.; McGrath, C.et al.; Beem-Miller, J.; Berhe, A. A.; Blankinship, J. C.; Keiluweit, M.; Marín-Spiotta, E.; Monroe, J. G.; Plante, A. F.; Schimel, J.; Sierra, C.; Thompson, A.; Wagai, R.: Beyond bulk: Density fractions explain heterogeneity in global soil carbon abundance and persistence. Global Change Biology 28 (3), pp. 1178 - 1196 (2022)
Giraldo, J. A.; del Valle, J. I.; González-Caro, S.; Sierra, C.: Intra-annual isotope variations in tree rings reveal growth rhythms within the least rainy season of an ever-wet tropical forest. Trees 36 (3), pp. 1039 - 1052 (2022)
Uribe, M. R.; Sierra, C.; Dukes, J. S.: Seasonality of tropical photosynthesis: A pantropical map of correlations with precipitation and radiation and comparison to model outputs. Biogeosciences 126 (11), e2020JG006123 (2021)
Stoner, S.; Hoyt, A. M.; Trumbore, S. E.; Sierra, C.; Schrumpf, M.; Doetterl, S.; Baisden, W. T.; Schipper, L. A.: Soil organic matter turnover rates increase to match increased inputs in grazed grasslands. Biogeochemistry 156, pp. 145 - 160 (2021)
Extreme precipitation should increase with warmer temperatures. Data from tropical regions show that this correlation is obscured by the cooling effect of clouds. When cloud effects are corrected, the increase in extreme precipitation with rising temperatures becomes apparent.
More frequent strong storms are destroying ever larger areas of the Amazon rainforest. Storm damage was mapped between 1985 and 2020. The total area of affected forests roughly quadrupled in the period studied.
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
The Chinese Academy of Sciences (CAS) and the German National Academy of Sciences Leopoldina will hold a joint conference on the challenges of achieving carbon neutrality in Berlin on October 29-30, 2024.
Experts from science, journalism, local authorities and non-governmental organizations consider a change of course in communication on climate issues to be urgently needed. The appeal was published on the occasion of the K3 Congress on Climate Communication with around 400 participants in Graz.
Since the first measurement flight in 1994, the European research infrastructure IAGOS has developed a measurement technique that is used in commercial airplanes and regularly provide extensive climate data from the atmosphere.
EU funds the international research project AI4PEX to further improve Earth system models and thus scientific predictions of climate change. Participating scientists from 9 countries met at the end of May 2024 to launch the project at the MPI for Biogeochemistry in Jena, which is leading the project.
Thuringia is severely affected by climate change, which is already reflected in extreme weather events and rising temperatures. The Climate Council is calling for the consistent implementation and tightening of climate policy targets in order to achieve climate neutrality by 2045. The coming legislative period is crucial for the future of Thuringia.
When it comes to studying climate change, we generally assume that the total amount of carbon emissions determines how much the planet will warm. A new study suggests that not only the amount, but also the timing of those emissions controls the amount of surface warming that occurs on human time-scale.
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.