Zobrazeno 1 - 10
of 183
pro vyhledávání: '"O. Nevalainen"'
Autor:
M. Linkosalmi, J.-P. Tuovinen, O. Nevalainen, M. Peltoniemi, C. M. Taniş, A. N. Arslan, J. Rainne, A. Lohila, T. Laurila, M. Aurela
Publikováno v:
Biogeosciences, Vol 19, Pp 4747-4765 (2022)
Vegetation phenology, which refers to the seasonal changes in plant physiology, biomass and plant cover, is affected by many abiotic factors, such as precipitation, temperature and water availability. Phenology is also associated with the carbon diox
Externí odkaz:
https://doaj.org/article/a59fc3c789ac4f9786bfedb5fa8f1368
Autor:
O. Nevalainen, O. Niemitalo, I. Fer, A. Juntunen, T. Mattila, O. Koskela, J. Kukkamäki, L. Höckerstedt, L. Mäkelä, P. Jarva, L. Heimsch, H. Vekuri, L. Kulmala, Å. Stam, O. Kuusela, S. Gerin, T. Viskari, J. Vira, J. Hyväluoma, J.-P. Tuovinen, A. Lohila, T. Laurila, J. Heinonsalo, T. Aalto, I. Kunttu, J. Liski
Publikováno v:
Geoscientific Instrumentation, Methods and Data Systems, Vol 11, Pp 93-109 (2022)
Better monitoring, reporting, and verification (MRV) of the amount, additionality, and persistence of the sequestered soil carbon is needed to understand the best carbon farming practices for different soils and climate conditions, as well as their a
Externí odkaz:
https://doaj.org/article/00faffe4d8bc4b53aacb904168ead59e
Autor:
L. Heimsch, A. Lohila, J.-P. Tuovinen, H. Vekuri, J. Heinonsalo, O. Nevalainen, M. Korkiakoski, J. Liski, T. Laurila, L. Kulmala
Publikováno v:
Biogeosciences, Vol 18, Pp 3467-3483 (2021)
A significant proportion of the global carbon emissions to the atmosphere originate from agriculture. Therefore, continuous long-term monitoring of CO2 fluxes is essential to understand the carbon dynamics and balances of different agricultural sites
Externí odkaz:
https://doaj.org/article/b38f29b38c554a24840dd3d21b41727b
Autor:
E. Honkavaara, R. Näsi, R. Oliveira, N. Viljanen, J. Suomalainen, E. Khoramshahi, T. Hakala, O. Nevalainen, L. Markelin, M. Vuorinen, V. Kankaanhuhta, P. Lyytikäinen-Saarenmaa, L. Haataja
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLIII-B3-2020, Pp 429-434 (2020)
Various biotic and abiotic stresses are threatening forests. Modern remote sensing technologies provide powerful means for monitoring forest health, and provide a sustainable basis for forest management and protection. The objective of this study was
Externí odkaz:
https://doaj.org/article/5c41575f3ca14cb285f5a6f52e472cf4
Autor:
E. Honkavaara, T. Hakala, O. Nevalainen, N. Viljanen, T. Rosnell, E. Khoramshahi, R. Näsi, R. Oliveira, A. Tommaselli
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XLI-B7, Pp 77-82 (2016)
Light-weight hyperspectral frame cameras represent novel developments in remote sensing technology. With frame camera technology, when capturing images with stereoscopic overlaps, it is possible to derive 3D hyperspectral reflectance information and
Externí odkaz:
https://doaj.org/article/099474d4e935442eb2f63239ea4e29d4
Publikováno v:
Biogeosciences, Vol 12, Iss 5, Pp 1629-1634 (2015)
We present an empirical application of multispectral laser scanning for monitoring the seasonal and spatial changes in pine chlorophyll (a + b) content and upscaling the accurate leaf-level chlorophyll measurements into branch and tree level. The res
Externí odkaz:
https://doaj.org/article/ac9be9cdb91e47b3b3603b3ab9a41218
Publikováno v:
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol II-5-W2, Pp 145-150 (2013)
In this article, we have studied the incidence angle effect on Terrestrial Laser Scanning (TLS) intensity. In previous tests, it has been found that the backscattered intensity of an object affects the incidence angle effect. We made additional expe
Externí odkaz:
https://doaj.org/article/a7919489ad024a9090b11edb3d5daa74
Publikováno v:
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol II-5-W2, Pp 205-210 (2013)
Agricultural lands have strong impact on global carbon dynamics and nitrogen availability. Monitoring changes in agricultural lands require more efficient and accurate methods. The first prototype of a full waveform hyperspectral Light Detection and
Externí odkaz:
https://doaj.org/article/126d0a7afb0b4469a767cd08c3fc85bc
Publikováno v:
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XL-7, Pp 109-111 (2014)
The first applications of a prototype 8-channel full waveform active hyperspectral lidar (HSL) show a possibility to determine various target 3D characteristics with remote observations. The results open up a prospect for four-dimensional (4D – a t
Externí odkaz:
https://doaj.org/article/9012119eb59046d68df962ed549fbbba
Publikováno v:
BioTechniques, Vol 34, Iss 1, Pp 116-122 (2003)
Gene expression analysis by electrophoretic methods is currently limited by the labor-intensive visual evaluation of the electrophoretic signal profiles. For this purpose, we present a flexible approach to computer-assisted comparison of quantitative
Externí odkaz:
https://doaj.org/article/176aca023a684476b08d5e70735a292b