Zobrazeno 1 - 10
of 18
pro vyhledávání: '"M. B. Enghoff"'
Publikováno v:
Earth and Space Science, Vol 7, Iss 9, Pp n/a-n/a (2020)
Abstract The presence of small ions influences the growth dynamics of a size distribution of aerosols. Specifically, the often neglected mass of small ions influences the aerosol growth rate, which may be important for terrestrial cloud formation. To
Externí odkaz:
https://doaj.org/article/92c4e4452c614094b9d44e629242fae1
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-9 (2017)
Ions produced by cosmic rays have been thought to influence aerosol and cloud processes by an unknown mechanism. Here the authors show that the mass flux of ions to aerosols enhances their growth significantly, with implications for the formation of
Externí odkaz:
https://doaj.org/article/a05d9d3d0bcc4f0189ec2bdb409fbc34
Autor:
M. B. Enghoff, N. Bork, S. Hattori, C. Meusinger, M. Nakagawa, J. O. P. Pedersen, S. Danielache, Y. Ueno, M. S. Johnson, N. Yoshida, H. Svensmark
Publikováno v:
Atmospheric Chemistry and Physics, Vol 12, Iss 12, Pp 5319-5327 (2012)
Sulphuric acid is an important factor in aerosol nucleation and growth. It has been shown that ions enhance the formation of sulphuric acid aerosols, but the exact mechanism has remained undetermined. Furthermore some studies have found a deficiency
Externí odkaz:
https://doaj.org/article/244cfe44b5b042bdb962a3b9f5467462
Publikováno v:
Atmospheric Chemistry and Physics, Vol 12, Iss 8, Pp 3639-3652 (2012)
Based on density functional theory calculations we present a study of the gaseous oxidation of SO2 to SO3 by an anionic O3−(H2O)n cluster, n = 0–5. The configurations of the most relevant reactants, transition states, and products are discussed a
Externí odkaz:
https://doaj.org/article/ea4fb65dd4384f3188e1f57aec171866
Publikováno v:
Atmospheric Chemistry and Physics, Vol 11, Iss 14, Pp 7133-7142 (2011)
An ab initio study of gaseous clusters of O2− and O3− with water is presented. Based on thorough scans of configurational space, we determine the thermodynamics of cluster growth. The results are in good agreement with benchmark computational met
Externí odkaz:
https://doaj.org/article/7e7be5ccd800432b93901c89ab6978b2
Publikováno v:
Atmospheric Chemistry and Physics, Vol 10, Iss 6, Pp 2765-2776 (2010)
In order to elucidate the effect of galactic cosmic rays on cloud formation, we investigate the optical response of marine aerosols to Forbush decreases – abrupt decreases in galactic cosmic rays – by means of modeling. We vary the nucleation rat
Externí odkaz:
https://doaj.org/article/5e0259d358614e1a86d654eab21e727c
Autor:
J. Duplissy, M. B. Enghoff, K. L. Aplin, F. Arnold, H. Aufmhoff, M. Avngaard, U. Baltensperger, T. Bondo, R. Bingham, K. Carslaw, J. Curtius, A. David, B. Fastrup, S. Gagné, F. Hahn, R. G. Harrison, B. Kellett, J. Kirkby, M. Kulmala, L. Laakso, A. Laaksonen, E. Lillestol, M. Lockwood, J. Mäkelä, V. Makhmutov, N. D. Marsh, T. Nieminen, A. Onnela, E. Pedersen, J. O. P. Pedersen, J. Polny, U. Reichl, J. H. Seinfeld, M. Sipilä, Y. Stozhkov, F. Stratmann, H. Svensmark, J. Svensmark, R. Veenhof, B. Verheggen, Y. Viisanen, P. E. Wagner, G. Wehrle, E. Weingartner, H. Wex, M. Wilhelmsson, P. M. Winkler
Publikováno v:
Atmospheric Chemistry and Physics, Vol 10, Iss 4, Pp 1635-1647 (2010)
During a 4-week run in October–November 2006, a pilot experiment was performed at the CERN Proton Synchrotron in preparation for the Cosmics Leaving OUtdoor Droplets (CLOUD) experiment, whose aim is to study the possible influence of cosmic rays on
Externí odkaz:
https://doaj.org/article/b11e60b56ffb42aa86c554b9922db884
Autor:
M. B. Enghoff, H. Svensmark
Publikováno v:
Atmospheric Chemistry and Physics, Vol 8, Iss 16, Pp 4911-4923 (2008)
Atmospheric aerosols affect climate and yet the reason for many observed events of new aerosol formation is not understood. One of the theories put forward to explain these events is that the presence of ions can enhance the formation of aerosols. Th
Externí odkaz:
https://doaj.org/article/9d7d27069bad4e5e909a5a264d89b4fa
Autor:
P. von Hessberg, J. Kaiser, M. B. Enghoff, C. A. McLinden, S. L. Sorensen, T. Röckmann, M. S. Johnson
Publikováno v:
Atmospheric Chemistry and Physics, Vol 4, Iss 5, Pp 1237-1253 (2004)
The isotopically substituted nitrous oxide species 14N14NO, 15N14NO, 14N15NO and 15N15NO were investigated by ultra-violet (UV) absorption spectroscopy. High precision cross sections were obtained for the wavelength range 181 to 218nm at temperatures
Externí odkaz:
https://doaj.org/article/6fe41deebf494940ae0c8e356d169f0b
