Bjorn B. Stevens How Cloudy Is the Earth?
© Maximilian Dörrbecker
Max Planck SocietyHamburg, Germany
"The Max Planck Society is Germany's most successful research organization. Since its establishment in 1948, no fewer than 18 Nobel laureates have emerged from the ranks of its scientists, putting it on a par with the best and most prestigious research institutions worldwide. The more than 15,000 publications each year in internationally renowned scientific journals are proof of the outstanding research work conducted at Max Planck Institutes – and many of those articles are among the most-cited publications in the relevant field." (Source)
Max Planck Institute for Meteorology
"The Max Planck Institute for Meteorology (MPI-M) is an internationally renowned institute for climate research. Its mission is to understand Earth's changing climate. Scientists at the MPI-M investigate what determines the sensitivity of the Earth system to perturbations such as the changing composition of its atmosphere, and work toward establishing the sources and limits of predictability within the Earth system. For that purpose MPI-M develops and analyses sophisticated models of the Earth system. Targeted in-situ measurements and satellite observations complement the model simulations." (Source)
It has been heretofore understood that patterns of cloudiness are controlled by large scale weather systems. In this video, BJORN STEVENS challenges this orthodoxy, arguing that small and intermediate scales of motion play a key role in determining the Earth’s cloudiness. Using aircraft to measure the vigor of intermediate scales of motion and groups of scientists to examinesmall scale patterning, Stevens identifies distinct patterning of clouds at these smaller scales. He suggests that the role played by small and intermediate scales of motion in cloud patterning is a previously neglected piece of the puzzle which will give us vital insight into how the cloudiness of the Earth might develop in the future.
LT Video Publication DOI: https://doi.org/10.21036/LTPUB10822
Measuring Area-Averaged Vertical Motions with Dropsondes
- Sandrine Bony and Bjorn Stevens
- Journal of the Atmospheric Sciences
- Published in 2019
Sugar, Gravel, Fish, and Flowers: Mesoscale Cloud Patterns in the Tradewinds
- Bjorn Stevens, Sandrine Bony, Hélène Brogniez, Laureline Hentgen, Cathy Hohenegger, Christoph Kiemle, Tristan S. L'Ecuyer, Ann Kristin Naumann, Hauke Schulz and Pier A. Siebesma
- Quarterly Journal of the Royal Meteorological Society
- Published in 2019