Zobrazeno 1 - 10
of 56
pro vyhledávání: '"F. Ramelli"'
Autor:
N. Omanovic, S. Ferrachat, C. Fuchs, J. Henneberger, A. J. Miller, K. Ohneiser, F. Ramelli, P. Seifert, R. Spirig, H. Zhang, U. Lohmann
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 6825-6844 (2024)
The ice phase in clouds is essential for precipitation formation over continents. The underlying processes for ice growth are still poorly understood, leading to large uncertainties in precipitation forecasts and climate simulations. One crucial aspe
Externí odkaz:
https://doaj.org/article/b3e3d1b1884c47338e0c875be2b17bb7
Autor:
A. J. Miller, F. Ramelli, C. Fuchs, N. Omanovic, R. Spirig, H. Zhang, U. Lohmann, Z. A. Kanji, J. Henneberger
Publikováno v:
Atmospheric Measurement Techniques, Vol 17, Pp 601-625 (2024)
Uncrewed aerial vehicles (UAVs) have become widely used in a range of atmospheric science research applications. Because of their small size, flexible range of motion, adaptability, and low cost, multirotor UAVs are especially well-suited for probing
Externí odkaz:
https://doaj.org/article/b7a8fe9a41b745798bdf02a383d1479d
Autor:
J. T. Pasquier, J. Henneberger, F. Ramelli, A. Lauber, R. O. David, J. Wieder, T. Carlsen, R. Gierens, M. Maturilli, U. Lohmann
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 15579-15601 (2022)
The Arctic is very susceptible to climate change and thus is warming much faster than the rest of the world. Clouds influence terrestrial and solar radiative fluxes and thereby impact the amplified Arctic warming. The partitioning of thermodynamic ph
Externí odkaz:
https://doaj.org/article/40946c6ede2d4fa4a74dec20a5778b33
Autor:
J. Wieder, N. Ihn, C. Mignani, M. Haarig, J. Bühl, P. Seifert, R. Engelmann, F. Ramelli, Z. A. Kanji, U. Lohmann, J. Henneberger
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 9767-9797 (2022)
Understanding the evolution of the ice phase within mixed-phase clouds (MPCs) is necessary to reduce uncertainties related to the cloud radiative feedback in climate projections and precipitation initiation. Both primary ice formation via ice-nucleat
Externí odkaz:
https://doaj.org/article/1cef64ddabfb40db8006cfd3c8e74904
Autor:
J. T. Pasquier, J. Henneberger, A. Korolev, F. Ramelli, J. Wieder, A. Lauber, G. Li, R. O. David, T. Carlsen, R. Gierens, M. Maturilli, U. Lohmann
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 1, Pp n/a-n/a (2023)
Abstract The sizes and shapes of ice crystals influence the radiative properties of clouds, as well as precipitation initiation and aerosol scavenging. However, ice crystal growth mechanisms remain only partially characterized. We present the growth
Externí odkaz:
https://doaj.org/article/a450e3f558d04d9fa195cd0ce30a8478
Autor:
P. Georgakaki, A. Bougiatioti, J. Wieder, C. Mignani, F. Ramelli, Z. A. Kanji, J. Henneberger, M. Hervo, A. Berne, U. Lohmann, A. Nenes
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 10993-11012 (2021)
Droplet formation provides a direct microphysical link between aerosols and clouds (liquid or mixed-phase), and its adequate description poses a major challenge for any atmospheric model. Observations are critical for evaluating and constraining the
Externí odkaz:
https://doaj.org/article/273994f0260f4896949fc8a2aae80640
Autor:
F. Ramelli, J. Henneberger, R. O. David, J. Bühl, M. Radenz, P. Seifert, J. Wieder, A. Lauber, J. T. Pasquier, R. Engelmann, C. Mignani, M. Hervo, U. Lohmann
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 6681-6706 (2021)
The seeder–feeder mechanism has been observed to enhance orographic precipitation in previous studies. However, the microphysical processes active in the seeder and feeder region are still being understood. In this paper, we investigate the seeder
Externí odkaz:
https://doaj.org/article/e3816e0165d34d8babc0ce9f364b0ae5
Autor:
F. Ramelli, J. Henneberger, R. O. David, A. Lauber, J. T. Pasquier, J. Wieder, J. Bühl, P. Seifert, R. Engelmann, M. Hervo, U. Lohmann
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 5151-5172 (2021)
Previous studies that investigated orographic precipitation have primarily focused on isolated mountain barriers. Here we investigate the influence of low-level blocking and shear-induced turbulence on the cloud microphysics and precipitation formati
Externí odkaz:
https://doaj.org/article/b2f6b8cc6c6548238482ffbf015199f5
Autor:
A. Lauber, J. Henneberger, C. Mignani, F. Ramelli, J. T. Pasquier, J. Wieder, M. Hervo, U. Lohmann
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 3855-3870 (2021)
An accurate prediction of the ice crystal number concentration in clouds is important to determine the radiation budget, the lifetime, and the precipitation formation of clouds. Secondary-ice production is thought to be responsible for the observed d
Externí odkaz:
https://doaj.org/article/d6c646fec8894e69a6f14e95f99e3444
Publikováno v:
Atmospheric Measurement Techniques, Vol 13, Pp 925-939 (2020)
Conventional techniques to measure boundary layer clouds such as research aircraft are unable to sample in orographically diverse or densely populated areas. In this paper, we present a newly developed measurement platform on a tethered balloon syste
Externí odkaz:
https://doaj.org/article/e59871b5c2dd40e6a1d3a7698a1a6af2