Zobrazeno 1 - 10
of 300
pro vyhledávání: '"A. Sogachev"'
Publikováno v:
Advances in Science and Research, Vol 17, Pp 53-61 (2020)
Parameterizing the effect of vertically-distributed vegetation through an effective roughness (z0,eff) – whereby momentum loss through a three-dimensional foliage volume is represented as momentum loss over an area at one vertical level – can fac
Externí odkaz:
https://doaj.org/article/4087f4a124a54b9d925a880aaad94b05
Publikováno v:
Atmospheric Chemistry and Physics, Vol 16, Pp 3145-3160 (2016)
A 1-D atmospheric boundary layer (ABL) model coupled with a detailed atmospheric chemistry and aerosol dynamical model, the model SOSAA, was used to predict the ABL and detailed aerosol population (characterized by the number size distribution) ti
Externí odkaz:
https://doaj.org/article/64fec0cd67994d23b29fd6fb97b8c9df
Autor:
L. Zhou, R. Gierens, A. Sogachev, D. Mogensen, J. Ortega, J. N. Smith, P. C. Harley, A. J. Prenni, E. J. T. Levin, A. Turnipseed, A. Rusanen, S. Smolander, A. B. Guenther, M. Kulmala, T. Karl, M. Boy
Publikováno v:
Atmospheric Chemistry and Physics, Vol 15, Iss 15, Pp 8643-8656 (2015)
New particle formation (NPF) is an important atmospheric phenomenon. During an NPF event, particles first form by nucleation and then grow further in size. The growth step is crucial because it controls the number of particles that can become cloud c
Externí odkaz:
https://doaj.org/article/edf67b6abc5e46748d90d5def383eca3
Autor:
D. Mogensen, R. Gierens, J. N. Crowley, P. Keronen, S. Smolander, A. Sogachev, A. C. Nölscher, L. Zhou, M. Kulmala, M. J. Tang, J. Williams, M. Boy
Publikováno v:
Atmospheric Chemistry and Physics, Vol 15, Iss 7, Pp 3909-3932 (2015)
Using the 1-D atmospheric chemistry transport model SOSAA, we have investigated the atmospheric reactivity of a boreal forest ecosystem during the HUMPPA-COPEC-10 campaign (summer 2010, at SMEAR~II in southern Finland). For the very first time, we
Externí odkaz:
https://doaj.org/article/d2145b2a33c442e4b63adb10f77df721
Autor:
B. Bonn, E. Bourtsoukidis, T. S. Sun, H. Bingemer, L. Rondo, U. Javed, J. Li, R. Axinte, X. Li, T. Brauers, H. Sonderfeld, R. Koppmann, A. Sogachev, S. Jacobi, D. V. Spracklen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 19, Pp 10823-10843 (2014)
It has been claimed for more than a century that atmospheric new particle formation is primarily influenced by the presence of sulfuric acid. However, the activation process of sulfuric acid related clusters into detectable particles is still an unre
Externí odkaz:
https://doaj.org/article/b2b260e9607f4364a45f8fc87289897c
Autor:
D. Mogensen, S. Smolander, A. Sogachev, L. Zhou, V. Sinha, A. Guenther, J. Williams, T. Nieminen, M. K. Kajos, J. Rinne, M. Kulmala, M. Boy
Publikováno v:
Atmospheric Chemistry and Physics, Vol 11, Iss 18, Pp 9709-9719 (2011)
We have modelled the total atmospheric OH-reactivity in a boreal forest and investigated the individual contributions from gas phase inorganic species, isoprene, monoterpenes, and methane along with other important VOCs. Daily and seasonal variation
Externí odkaz:
https://doaj.org/article/879556274f0e4eae85b407d7d6add316
Autor:
T. Kurtén, L. Zhou, R. Makkonen, J. Merikanto, P. Räisänen, M. Boy, N. Richards, A. Rap, S. Smolander, A. Sogachev, A. Guenther, G. W. Mann, K. Carslaw, M. Kulmala
Publikováno v:
Atmospheric Chemistry and Physics, Vol 11, Iss 14, Pp 6961-6969 (2011)
The release of vast quantities of methane into the atmosphere as a result of clathrate destabilization is a potential mechanism for rapid amplification of global warming. Previous studies have calculated the enhanced warming based mainly on the radia
Externí odkaz:
https://doaj.org/article/63c581477209430690f7bb1092e7bbba
Autor:
J. Lauros, A. Sogachev, S. Smolander, H. Vuollekoski, S.-L. Sihto, I. Mammarella, L. Laakso, Ü. Rannik, M. Boy
Publikováno v:
Atmospheric Chemistry and Physics, Vol 11, Iss 12, Pp 5591-5601 (2011)
We carried out column model simulations to study particle fluxes and deposition and to evaluate different particle formation mechanisms at a boreal forest site in Finland. We show that kinetic nucleation of sulphuric acid cannot be responsible for ne
Externí odkaz:
https://doaj.org/article/c7bf4dfabfc64f23ad3416f0fdbd5e25
Publikováno v:
Atmospheric Chemistry and Physics, Vol 11, Iss 1, Pp 43-51 (2011)
Chemistry in the atmospheric boundary layer (ABL) is controlled by complex processes of surface fluxes, flow, turbulent transport, and chemical reactions. We present a new model SOSA (model to simulate the concentration of organic vapours and sulphur
Externí odkaz:
https://doaj.org/article/f3d8d7d57056490c942d999e3c1bec73
Autor:
L. Järvi, Ü. Rannik, I. Mammarella, A. Sogachev, P. P. Aalto, P. Keronen, E. Siivola, M. Kulmala, T. Vesala
Publikováno v:
Atmospheric Chemistry and Physics, Vol 9, Iss 20, Pp 7847-7856 (2009)
Long-term eddy covariance particle number flux measurements for the diameter range 6 nm to 5 μm were performed at the SMEAR III station over an urban area in Helsinki, Finland. The heterogeneity of the urban measurement location allowed us to study
Externí odkaz:
https://doaj.org/article/c66b1255788a47a7b35333706f73691f