In collaboration with @miguelmahecha.bsky.social Markus Reichstein, Nora Linscheid, Alex Winkler and Christian Rödenbeck.
The positive trend is also partly due to the statistical lever effect of few outliers in the CO2 growth rate time-series when applying running trends. Summary:⚠️caution is needed when interpreting such trends!
Rather, they tend to be associated with multidecadal periods with more strong El-Niño events and fewer strong La-Niña events than the periods decades, as was the case of the 1980s and 1990s. These result higher variance in CO2 growth rate as C-cycle impacts are not symmetrical.
Following the positive trend in the 1980s and 1990s, the sensitivity decreased again. Such events are found in by Earth System model simulations with perturbed initial conditions, and do not seem to have an anthropogenic fingerprint.
New study led by PhD candidate Li Na, co-advised by Sebastian Sippel, shows that the doubling of the sensitivity of CO2 growth rate to tropical temperature can be explained by internal climate variability. The trend is explained by the impact of few but strong El-Niño events on land C sink variance
Doubling sensitivity of atmospheric CO2 to tropical temperature is linked to internal climate variability and El Niño events.
I’m very happy to have you around again 😊
If I could, I would apply! Don’t miss out the chance to work with a wonderful scientist 👇🏾
I am looking for a Postdoc Associate for my group @uni-hamburg.de to enhance the representation of ocean biogeochemical processes, carbon-climate feedbacks, ocean carbon storage under changing emissions in the new Earth System Model ICON-XPP. See how to apply👇 www.uni-hamburg.de/stellenangeb... 🌊
Slow-down the frenzy of mildly incremental publications, rather collectively focus on high quality of science and on well-being of scientists. My 2 cents. 🤷🏽♀️
While floods drown Central Europe, Portugal suffocates under massive wildfires, with seven people dying since yesterday. The #ClimateEmergency#nofilter
