Zobrazeno 1 - 10
of 212
pro vyhledávání: '"T. Anttila"'
Publikováno v:
Atmospheric Chemistry and Physics, Vol 16, Pp 7067-7090 (2016)
We present the combined power law and log-normal distribution (PL+LN) model, a computationally efficient model to be used in simulations where the particle size distribution cannot be accurately represented by log-normal distributions, such as in
Externí odkaz:
https://doaj.org/article/3db0481b6c8545968099500c27449e8b
Autor:
F. Mylläri, E. Asmi, T. Anttila, E. Saukko, V. Vakkari, L. Pirjola, R. Hillamo, T. Laurila, A. Häyrinen, J. Rautiainen, H. Lihavainen, E. O'Connor, V. Niemelä, J. Keskinen, M. Dal Maso, T. Rönkkö
Publikováno v:
Atmospheric Chemistry and Physics, Vol 16, Pp 7485-7496 (2016)
Atmospheric emissions, including particle number and size distribution, from a 726 MWth coal-fired power plant were studied experimentally from a power plant stack and flue-gas plume dispersing in the atmosphere. Experiments were conducted under t
Externí odkaz:
https://doaj.org/article/4c77f5f725264bd0a84bb48a7a0c9f48
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 12, Pp 6461-6475 (2014)
New particle formation, which greatly influences the number concentrations and size distributions of an atmospheric aerosol, is often followed by a rapid growth of freshly formed particles. The initial growth of newly formed aerosol is the crucial pr
Externí odkaz:
https://doaj.org/article/3f51ce5f78bc48a9a181ac849a663aab
Autor:
T. Anttila, D. Brus, A. Jaatinen, A.-P. Hyvärinen, N. Kivekäs, S. Romakkaniemi, M. Komppula, H. Lihavainen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 12, Iss 23, Pp 11435-11450 (2012)
Concurrent measurement of aerosols, cloud condensation nuclei (CCN) and cloud droplet activation were carried out as a part of the third Pallas Cloud Experiment (PaCE-3) which took place at a ground based site located on northern Finland during the a
Externí odkaz:
https://doaj.org/article/b38bf04a62144e9d805510ce0ab66163
Autor:
V.-M. Kerminen, M. Paramonov, T. Anttila, I. Riipinen, C. Fountoukis, H. Korhonen, E. Asmi, L. Laakso, H. Lihavainen, E. Swietlicki, B. Svenningsson, A. Asmi, S. N. Pandis, M. Kulmala, T. Petäjä
Publikováno v:
Atmospheric Chemistry and Physics, Vol 12, Iss 24, Pp 12037-12059 (2012)
This paper synthesizes the available scientific information connecting atmospheric nucleation with subsequent cloud condensation nuclei (CCN) formation. We review both observations and model studies related to this topic, and discuss the potential cl
Externí odkaz:
https://doaj.org/article/1998fe1152b84f0f9a34b09d64e039ed
Publikováno v:
Atmospheric Chemistry and Physics, Vol 11, Iss 10, Pp 4939-4955 (2011)
In this study we have provided simple analytical formulae to estimate the growth rate of a nucleation mode due to self-coagulation and the apparent growth rate due to coagulation scavenging by larger particles. These formulae were used on a set of si
Externí odkaz:
https://doaj.org/article/8e408a8447434181933940f5752be0be
Autor:
A. Laaksonen, V.-M. Kerminen, H. Lihavainen, A.-P. Hyvärinen, M. Komppula, P. Vaattovaara, T. Anttila
Publikováno v:
Atmospheric Chemistry and Physics, Vol 9, Iss 14, Pp 4841-4854 (2009)
In situ measurements of aerosol water uptake and activation of aerosols into cloud droplets provide information on how aerosols influence the microphysical properties of clouds. Here we present a computational scheme that can be used in connection wi
Externí odkaz:
https://doaj.org/article/6b2d60861ad34a6eb21ed4a12e68ea15
Publikováno v:
Atmospheric Chemistry and Physics, Vol 8, Iss 16, Pp 4595-4604 (2008)
Surface tension of ternary solution of sodium chloride, succinic acid and water was measured as a function of both composition and temperature by using the capillary rise technique. Both sodium chloride and succinic acid are found in atmospheric aero
Externí odkaz:
https://doaj.org/article/680dd7f02ab643f7973e89d392d8597f
Autor:
A. Laaksonen, M. Kulmala, H. Järvinen, A.-I. Partanen, T. Anttila, S. Järvenoja, A. Asmi, R. Makkonen, K. E. J. Lehtinen, H. Korhonen, H. Kokkola, V.-M. Kerminen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 8, Iss 9, Pp 2469-2483 (2008)
The sectional aerosol module SALSA is introduced. The model has been designed to be implemented in large scale climate models, which require both accuracy and computational efficiency. We have used multiple methods to reduce the computational burden
Externí odkaz:
https://doaj.org/article/c98ae969de8542a3867057be58b72407
Publikováno v:
Atmospheric Chemistry and Physics, Vol 8, Iss 7, Pp 1985-1988 (2008)
In this paper, we consider the cloud drop activation of aerosol particles consisting of water soluble material and an insoluble core. Based on the Köhler theory, we derive analytical equations for the critical diameters and supersaturations of such
Externí odkaz:
https://doaj.org/article/5e8915c06d834966967668439ed4ec98