Zobrazeno 1 - 10
of 143
pro vyhledávání: '"F. Conen"'
Autor:
K. E. Yttri, A. Bäcklund, F. Conen, S. Eckhardt, N. Evangeliou, M. Fiebig, A. Kasper-Giebl, A. Gold, H. Gundersen, C. L. Myhre, S. M. Platt, D. Simpson, J. D. Surratt, S. Szidat, M. Rauber, K. Tørseth, M. A. Ytre-Eide, Z. Zhang, W. Aas
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 2731-2758 (2024)
We analyzed long-term measurements of organic carbon, elemental carbon, and source-specific organic tracers from 2017 to 2020 to constrain carbonaceous aerosol sources in the rapidly changing Arctic. Additionally, we used absorption photometer (Aetha
Externí odkaz:
https://doaj.org/article/7b2cba86a23546ca9fa1851b69f7da9b
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 13551-13568 (2022)
Clouds and precipitation play a critical role in the Earth's water cycle and energy budget. We present ground-level observations of snowfall coinciding with radiosonde launches in Sodankylä, Finland (67.367∘ N, 26.629∘ E) through a period of 8 c
Externí odkaz:
https://doaj.org/article/29dd3fa671f9416b876ad35b3d8038da
Autor:
C. Brunner, B. T. Brem, M. Collaud Coen, F. Conen, M. Steinbacher, M. Gysel-Beer, Z. A. Kanji
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 7557-7573 (2022)
Cloud radiative properties, cloud lifetime, and precipitation initiation are strongly influenced by the cloud phase. Between ∼ 235 and 273 K, ice-nucleating particles (INPs) are responsible for the initial phase transition from the liquid to the ic
Externí odkaz:
https://doaj.org/article/c4bcd2d3fec84f15b3703b4fc7684db7
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 3433-3444 (2022)
Ice-nucleating particles (INPs) initiate ice formation in supercooled clouds, typically starting in western Europe at a few kilometres above the ground. However, little is known about the concentration and composition of INPs in the lower free tropos
Externí odkaz:
https://doaj.org/article/cfe0a4a6c459437ba931c463569561a9
Autor:
C. Brunner, B. T. Brem, M. Collaud Coen, F. Conen, M. Hervo, S. Henne, M. Steinbacher, M. Gysel-Beer, Z. A. Kanji
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 18029-18053 (2021)
The ice phase in mixed-phase clouds has a pivotal role in global precipitation formation as well as for Earth's radiative budget. Above 235 K, sparse particles with the special ability to initiate ice formation, ice-nucleating particles (INPs), are r
Externí odkaz:
https://doaj.org/article/cfc74ae151464aa5b00274d6bd807fa0
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 657-664 (2021)
A small fraction of freezing cloud droplets probably initiates much of the precipitation above continents. Only a minute fraction of aerosol particles, so-called ice-nucleating particles (INPs), can trigger initial ice formation at −15 ∘C, at whi
Externí odkaz:
https://doaj.org/article/c3b5e2c655b94ca4b95facbace494733
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 8123-8140 (2019)
One of the least understood cloud processes is modulation of their microphysics by aerosols, specifically of cloud ice by ice-nucleating particles (INPs). To investigate INP impacts on cloud ice and subsequent precipitation formation, measurements in
Externí odkaz:
https://doaj.org/article/27aecd1fb1184e70bcd629faec4fa243
Autor:
N. Hiranuma, K. Adachi, D. M. Bell, F. Belosi, H. Beydoun, B. Bhaduri, H. Bingemer, C. Budke, H.-C. Clemen, F. Conen, K. M. Cory, J. Curtius, P. J. DeMott, O. Eppers, S. Grawe, S. Hartmann, N. Hoffmann, K. Höhler, E. Jantsch, A. Kiselev, T. Koop, G. Kulkarni, A. Mayer, M. Murakami, B. J. Murray, A. Nicosia, M. D. Petters, M. Piazza, M. Polen, N. Reicher, Y. Rudich, A. Saito, G. Santachiara, T. Schiebel, G. P. Schill, J. Schneider, L. Segev, E. Stopelli, R. C. Sullivan, K. Suski, M. Szakáll, T. Tajiri, H. Taylor, Y. Tobo, R. Ullrich, D. Weber, H. Wex, T. F. Whale, C. L. Whiteside, K. Yamashita, A. Zelenyuk, O. Möhler
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 4823-4849 (2019)
We present the laboratory results of immersion freezing efficiencies of cellulose particles at supercooled temperature (T) conditions. Three types of chemically homogeneous cellulose samples are used as surrogates that represent supermicron and submi
Externí odkaz:
https://doaj.org/article/08f06bde9b57423cbfa05e229f398727
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 877-886 (2019)
Ice crystal numbers can exceed the numbers of ice-nucleating particles (INPs) observed in mixed-phase clouds (MPCs) by several orders of magnitude, also at temperatures that are colder than −8 ∘C. This disparity provides circumstantial evidence
Externí odkaz:
https://doaj.org/article/68db49dd89774f07ac2a278d7a444134
Autor:
F. Conen, M. V. Yakutin
Publikováno v:
Biogeosciences, Vol 15, Pp 4381-4385 (2018)
Soil organic matter carries ice-nucleating particles (INPs) the origin of which is hard to define and that are active at slight supercooling. The discovery and characterization of INPs produced by the widespread soil fungus Mortierella alpina per
Externí odkaz:
https://doaj.org/article/af6bcc2fc202467981f43ba3e63b9adb