Zobrazeno 1 - 10
of 129
pro vyhledávání: '"S. Launiainen"'
Autor:
J.-P. Nousu, K. Leppä, H. Marttila, P. Ala-aho, G. Mazzotti, T. Manninen, M. Korkiakoski, M. Aurela, A. Lohila, S. Launiainen
Publikováno v:
Hydrology and Earth System Sciences, Vol 28, Pp 4643-4666 (2024)
Soil moisture plays a key role in soil nutrient and carbon cycling; plant productivity; and energy, water, and greenhouse gas exchanges between the land and the atmosphere. The knowledge on drivers of spatiotemporal soil moisture dynamics in subarcti
Externí odkaz:
https://doaj.org/article/b612b5a0c9a0473e960368f1434ff7e3
Autor:
B. Ťupek, A. Lehtonen, A. Yurova, R. Abramoff, B. Guenet, E. Bruni, S. Launiainen, M. Peltoniemi, S. Hashimoto, X. Tian, J. Heikkinen, K. Minkkinen, R. Mäkipää
Publikováno v:
Geoscientific Model Development, Vol 17, Pp 5349-5367 (2024)
As soil microbial respiration is the major component of land CO2 emissions, differences in the functional dependence of respiration on soil moisture among Earth system models (ESMs) contributes significantly to the uncertainties in their projections.
Externí odkaz:
https://doaj.org/article/ba506a092073447cb581ed3c509b3902
Autor:
J.-P. Nousu, M. Lafaysse, G. Mazzotti, P. Ala-aho, H. Marttila, B. Cluzet, M. Aurela, A. Lohila, P. Kolari, A. Boone, M. Fructus, S. Launiainen
Publikováno v:
The Cryosphere, Vol 18, Pp 231-263 (2024)
The snowpack has a major influence on the land surface energy budget. Accurate simulation of the snowpack energy and radiation budget is challenging due to, e.g., effects of vegetation and topography, as well as limitations in the theoretical underst
Externí odkaz:
https://doaj.org/article/fb541db90e864fffb5e16476bcaec7a7
Autor:
P. Alekseychik, A. Korrensalo, I. Mammarella, S. Launiainen, E.-S. Tuittila, I. Korpela, T. Vesala
Publikováno v:
Biogeosciences, Vol 18, Pp 4681-4704 (2021)
Pristine boreal mires are known as substantial sinks of carbon dioxide (CO2) and net emitters of methane (CH4). Bogs constitute a major fraction of pristine boreal mires. However, the bog CO2 and CH4 balances are poorly known, having been largely est
Externí odkaz:
https://doaj.org/article/8944175c8eed414ebb36961c3308bcfe
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 3501-3521 (2021)
High-resolution thermal infrared (TIR) imaging is opening up new vistas in biosphere–atmosphere heat exchange studies. The rapidly developing unmanned aerial systems (UASs) and specially designed cameras offer opportunities for TIR survey with incr
Externí odkaz:
https://doaj.org/article/ca099b5e60804a71852842b73a9325d5
Autor:
N. Kozii, K. Haahti, P. Tor-ngern, J. Chi, E. M. Hasselquist, H. Laudon, S. Launiainen, R. Oren, M. Peichl, J. Wallerman, N. J. Hasselquist
Publikováno v:
Hydrology and Earth System Sciences, Vol 24, Pp 2999-3014 (2020)
Although it is well known that evapotranspiration (ET) represents an important water flux at local to global scales, few studies have quantified the magnitude and relative importance of ET and its individual flux components in high-latitude forests.
Externí odkaz:
https://doaj.org/article/47d36220e94d414b92061aca73fa503c
Publikováno v:
Hydrology and Earth System Sciences, Vol 23, Pp 3457-3480 (2019)
Vegetation is known to have strong influence on evapotranspiration (ET), a major component of terrestrial water balance. Yet hydrological models often describe ET by methods unable to include the variability of vegetation characteristics in their pre
Externí odkaz:
https://doaj.org/article/f9fd4eac64a240a1bd0aa609a78fe854
Autor:
A.-J. Kieloaho, M. Pihlatie, S. Launiainen, M. Kulmala, M.-L. Riekkola, J. Parshintsev, I. Mammarella, T. Vesala, J. Heinonsalo
Publikováno v:
Biogeosciences, Vol 14, Iss 5, Pp 1075-1091 (2017)
Alkylamines are important precursors in secondary aerosol formation in the boreal forest atmosphere. To better understand the behavior and sources of two alkylamines, dimethylamine (DMA) and diethylamine (DEA), we estimated the magnitudes of soil–a
Externí odkaz:
https://doaj.org/article/8d1d1f5757e440ffb93710d45675ab53
Autor:
Y. Chen, J. Ryder, V. Bastrikov, M. J. McGrath, K. Naudts, J. Otto, C. Ottlé, P. Peylin, J. Polcher, A. Valade, A. Black, J. A. Elbers, E. Moors, T. Foken, E. van Gorsel, V. Haverd, B. Heinesch, F. Tiedemann, A. Knohl, S. Launiainen, D. Loustau, J. Ogée, T. Vessala, S. Luyssaert
Publikováno v:
Geoscientific Model Development, Vol 9, Iss 9, Pp 2951-2972 (2016)
Canopy structure is one of the most important vegetation characteristics for land–atmosphere interactions, as it determines the energy and scalar exchanges between the land surface and the overlying air mass. In this study we evaluated the performa
Externí odkaz:
https://doaj.org/article/bd25c3f01e4542229258d48678a5b1cb
Autor:
S. Sarkkola, M. Nieminen, H. Koivusalo, A. Laurén, E. Ahti, S. Launiainen, E. Nikinmaa, H. Marttila, J. Laine, H. Hökkä
Publikováno v:
Mires and Peat, Vol 11, Iss 02, Pp 1-11 (2013)
In Finland, ditch network maintenance (DNM) is carried out annually on 60–70,000 ha of drained peatland to promote tree growth for forestry purposes. However, it is important to avoid ditching that contributes little to the stand growth and product
Externí odkaz:
https://doaj.org/article/96072145e4a646dba0026c9a77213ddb