Zobrazeno 1 - 10
of 69
pro vyhledávání: '"R. Taipale"'
Autor:
F. Bianchi, O. Garmash, X. He, C. Yan, S. Iyer, I. Rosendahl, Z. Xu, M. P. Rissanen, M. Riva, R. Taipale, N. Sarnela, T. Petäjä, D. R. Worsnop, M. Kulmala, M. Ehn, H. Junninen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Pp 13819-13831 (2017)
In order to investigate the negative ions in the boreal forest we have performed measurements to chemically characterise the composition of negatively charged clusters containing highly oxygenated molecules (HOMs). Additionally, we compared this i
Externí odkaz:
https://doaj.org/article/d5f7d4611d604b5e864995e2e61f3272
Autor:
P. Rantala, L. Järvi, R. Taipale, T. K. Laurila, J. Patokoski, M. K. Kajos, M. Kurppa, S. Haapanala, E. Siivola, T. Petäjä, T. M. Ruuskanen, J. Rinne
Publikováno v:
Atmospheric Chemistry and Physics, Vol 16, Pp 7981-8007 (2016)
We measured volatile organic compounds (VOCs), carbon dioxide (CO2) and carbon monoxide (CO) at an urban background site near the city centre of Helsinki, Finland, northern Europe. The VOC and CO2 measurements were obtained between January 2013 an
Externí odkaz:
https://doaj.org/article/f9dda33b197643f88ace14f6c40c3ef8
Autor:
J. Patokoski, T. M. Ruuskanen, M. K. Kajos, R. Taipale, P. Rantala, J. Aalto, T. Ryyppö, T. Nieminen, H. Hakola, J. Rinne
Publikováno v:
Atmospheric Chemistry and Physics, Vol 15, Iss 23, Pp 13413-13432 (2015)
In this study a long-term volatile organic compound (VOCs) concentration data set, measured at the SMEAR II (Station for Measuring Ecosystem–Atmosphere Relations) boreal forest site in Hyytiälä, Finland during the years 2006–2011, was analyzed
Externí odkaz:
https://doaj.org/article/adde4e2ef18946f59e1bae1792d7db1d
Publikováno v:
Biogeosciences, Vol 12, Iss 19, Pp 5753-5770 (2015)
Long-term flux measurements of volatile organic compounds (VOC) over boreal forests are rare, although the forests are known to emit considerable amounts of VOCs into the atmosphere. Thus, we measured fluxes of several VOCs and oxygenated VOCs over a
Externí odkaz:
https://doaj.org/article/6cdad7b78c1c4616ad63a341454de2ec
Autor:
M. K. Kajos, P. Rantala, M. Hill, H. Hellén, J. Aalto, J. Patokoski, R. Taipale, C. C. Hoerger, S. Reimann, T. M. Ruuskanen, J. Rinne, T. Petäjä
Publikováno v:
Atmospheric Measurement Techniques, Vol 8, Iss 10, Pp 4453-4473 (2015)
Proton transfer reaction mass spectrometry (PTR-MS) and gas chromatography mass spectrometry GC-MS) are commonly used methods for automated in situ measurements of various volatile organic compounds (VOCs) in the atmosphere. In order to investigate t
Externí odkaz:
https://doaj.org/article/dfb160da084a46e8be16c463475ab3eb
Autor:
T. Berndt, M. Sipilä, F. Stratmann, T. Petäjä, J. Vanhanen, J. Mikkilä, J. Patokoski, R. Taipale, R. L. Mauldin III, M. Kulmala
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 2, Pp 751-764 (2014)
Atmospheric H2SO4 / H2O nucleation influencing effects have been studied in the flow tube IfT-LFT (Institute for Tropospheric Research – Laminar Flow Tube) at 293 ± 0.5 K and a pressure of 1 bar using synthetic air as the carrier gas. The presence
Externí odkaz:
https://doaj.org/article/65c512b8338743cfad455f27f3219b7d
Publikováno v:
Biogeosciences, Vol 8, Iss 8, Pp 2247-2255 (2011)
Monoterpene emissions from Scots pine have traditionally been assumed to originate as evaporation from specialized storage pools. More recently, the significance of de novo emissions, originating directly from monoterpene biosynthesis, has been recog
Externí odkaz:
https://doaj.org/article/233dfada79164c1590cfb45091fd5a4d
Publikováno v:
Atmospheric Measurement Techniques, Vol 3, Iss 4, Pp 853-862 (2010)
The disjunct eddy covariance (DEC) method has emerged as a popular technique for micrometeorological flux measurements of volatile organic compounds (VOCs). It has usually been combined with proton transfer reaction mass spectrometry (PTR-MS), an onl
Externí odkaz:
https://doaj.org/article/4296b54d968f4ea7821a24eefb1e1a46
Autor:
B. Davison, R. Taipale, B. Langford, P. Misztal, S. Fares, G. Matteucci, F. Loreto, J. N. Cape, J. Rinne, C. N. Hewitt
Publikováno v:
Biogeosciences, Vol 6, Iss 8, Pp 1655-1670 (2009)
Emission rates and concentrations of biogenic volatile organic compounds (BVOCs) were measured at a Mediterranean coastal site at Castelporziano, approximately 25 km south-west of Rome, between 7 May and 3 June 2007, as part of the ACCENT-VOCBAS fiel
Externí odkaz:
https://doaj.org/article/beeba87b4651438896cc0a5084658e99
Autor:
H. K. Lappalainen, S. Sevanto, J. Bäck, T. M. Ruuskanen, P. Kolari, R. Taipale, J. Rinne, M. Kulmala, P. Hari
Publikováno v:
Atmospheric Chemistry and Physics, Vol 9, Iss 15, Pp 5447-5459 (2009)
Atmospheric concentrations of methanol, acetaldehyde, acetone, isoprene and monoterpenes were measured using PTR-MS (proton transfer reaction mass spectrometry) in a boreal forest site in Hyytiälä, Finland (61°51' N, 24°17' E). The concentration
Externí odkaz:
https://doaj.org/article/f35bc675e4cd418293adc5471a5bfe75