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2019

A Relationship Between Blue and Near-IR Global Spectral Reflectance and the Response of Global Average Reflectance to Change in Cloud Cover Observed From EPIC

Wen, G., Marshak, A., Song, W., Knyazikhin, Y., Mõttus, M. & Wu, D., 18 Jul 2019, In : Earth and Space Science. 6, 8, p. 1416-1429 14 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
spectral reflectance
cloud cover
reflectance
near infrared
ocean

Combining Deep Learning Methods for Retrieval of Forest Biomass & Structure

Molinier, M., Astola, H. & Mõttus, M., 16 May 2019, ESA Living Planet Symposium 2019. Milano: European Space Agency ESA

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

learning
artificial intelligence
biomass
reflectance
aboveground biomass
1 Citation (Scopus)

Diurnal Changes in Leaf Photochemical Reflectance Index in Two Evergreen Forest Canopies

Mõttus, M., Aragão, L., Bäck, J., Hernández-Clemente, R., Maeda, E. E. & Markiet, V., Jul 2019, In : IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 12, 7, p. 2236-2243

Research output: Contribution to journalArticleScientificpeer-review

Open Access
evergreen forest
forest canopy
reflectance
Photosynthesis
Satellites
1 Citation (Scopus)

Early Diagnosis of Vegetation Health From High-Resolution Hyperspectral and Thermal Imagery: Lessons Learned From Empirical Relationships and Radiative Transfer Modelling

Hernández-Clemente, R., Hornero, A., Mottus, M., Penuelas, J., González-Dugo, V., Jiménez, J. C., Suárez, L., Alonso, L. & Zarco-Tejada, P. J., 15 Sep 2019, In : Current Forestry Reports. 5, 3, p. 169-183 15 p.

Research output: Contribution to journalReview ArticleScientificpeer-review

Open Access
early diagnosis
radiative transfer
imagery
heat
vegetation
1 Citation (Scopus)

Simulating solar-induced chlorophyll fluorescence in a boreal forest stand reconstructed from terrestrial laser scanning measurements

Liu, W., Atherton, J., Mõttus, M., Gastellu-Etchegorry, J. P., Malenovský, Z., Raumonen, P., Åkerblom, M., Mäkipää, R. & Porcar-Castell, A., 1 Oct 2019, In : Remote Sensing of Environment. 232, 111274.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Chlorophyll
boreal forests
forest stands
boreal forest
lasers
Open Access
boreal forest
Remote sensing
Biomass
remote sensing
biomass
2018

Correction: Measurement of diurnal variation in needle PRI and shoot photosynthesis in a boreal forest

Mõttus, M., Hernández-Clemente, R., Perheentupa, V., Markiet, V., Aalto, J., Bäck, J. & Nichol, C. J., Dec 2018, In : Remote Sensing. 10, 12, 2030.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
4 Citations (Scopus)

Effects of crop leaf angle on LAI-sensitive narrow-band vegetation indices derived from imaging spectroscopy

Zou, X., Haikarainen, I., Haikarainen, I. P., Mäkelä, P., Mõttus, M. & Pellikka, P., 22 Aug 2018, In : Applied Sciences. 8, 9, 1435.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
leaf area index
crops
vegetation
leaves
Crops
3 Citations (Scopus)

Evaluation of Accuracy and Practical Applicability of Methods for Measuring Leaf Reflectance and Transmittance Spectra

Hovi, A., Forsström, P., Mottus, M. & Rautiainen, M., Jan 2018, In : Remote Sensing. 10, 1, 19 p., 25.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
transmittance
reflectance
evaluation
method
measuring

Implications of diurnal changes in leaf PRI on remote measurements of light use efficiency

Mõttus, M., Aalto, J., Aragão, L., Bäck, J., Hernández-Clemente, R., Maeda, E. E., Markiet, V., Nichol, C. J., Cosme Oliveira, R., Restrepo-Coupe, N. & Salesca, S., 5 Nov 2018, 2018 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018 - Proceedings. IEEE Institute of Electrical and Electronic Engineers , p. 9007-9010 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

light use efficiency
reflectance
photon flux density
biome
timescale
2 Citations (Scopus)

Implications of whole-disc DSCOVR EPIC spectral observations for estimating earth's spectral reflectivity based on low-earth-orbiting and geostationary observations

Song, W., Knyazikhin, Y., Wen, G., Marshak, A., Mõttus, M., Yan, K., Yang, B., Xu, B., Park, T., Chen, C., Zeng, Y., Yan, G., Mu, X. & Myneni, R. B., 1 Oct 2018, In : Remote Sensing. 10, 10, 1594.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
reflectivity
observatory
climate
sampling
spectral reflectance
3 Citations (Scopus)

Measurement of diurnal variation in needle PRI and shoot photosynthesis in a boreal forest

Mõttus, M., Hernández-Clemente, R., Perheentupa, V., Markiet, V., Aalto, J., Bäck, J. & Nichol, C. J., 1 Jul 2018, In : Remote Sensing. 10, 7, 1019.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
boreal forest
diurnal variation
reflectance
photosynthesis
shoot
9 Citations (Scopus)

Spectral properties of coniferous forests: A review of in situ and laboratory measurements

Rautiainen, M., Lukeš, P., Homolová, L., Hovi, A., Pisek, J. & Mõttus, M., 1 Feb 2018, In : Remote Sensing. 10, 2, 207.

Research output: Contribution to journalReview ArticleScientificpeer-review

Open Access
coniferous forest
biome
understory
Northern Hemisphere
seasonal variation
2017
18 Citations (Scopus)

Estimation of leaf area index and its sunlit portion from DSCOVR EPIC data: Theoretical basis

Yang, B., Knyazikhin, Y., Mõttus, M., Rautiainen, M., Stenberg, P., Yan, L., Chen, C., Yan, K., Choi, S., Park, T. & Myneni, R., 1 Sep 2017, In : Remote Sensing of Environment. 198, p. 69-84 16 p.

Research output: Contribution to journalArticleScientificpeer-review

Observatories
cameras
leaf area index
observatory
Earth (planet)
5 Citations (Scopus)

In situ measurement of Scots pine needle PRI

Mõttus, M., Hernández-Clemente, R., Perheentupa, V. & Markiet, V., 2017, In : Plant Methods. 13, 1, p. 35 35.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
conifer needles
Pinus sylvestris
reflectance
Needles
Light

Quantitative global mapping of terrestrial vegetation photosynthesis: The Fluorescence Explorer (FLEX) mission

Moreno, J., Colombo, R., Damm, A., Goulas, Y., Middleton, E., Miglietta, F., Mohammed, G., Mottus, M., North, P., Rascher, U., van der Tol, C. & Drusch, M., 1 Dec 2017, 2017 IEEE International Geoscience and Remote Sensing Symposium: International Cooperation for Global Awareness, IGARSS 2017 - Proceedings. IEEE Institute of Electrical and Electronic Engineers , p. 435-438 4 p. 8126987

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Photosynthesis
photosynthesis
fluorescence
Fluorescence
vegetation
6 Citations (Scopus)

Sensitivity of common vegetation indices to the canopy structure of field crops

Zou, X. & Mõttus, M., 1 Oct 2017, In : Remote Sensing. 9, 10, 994.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
vegetation index
leaf area index
canopy
crop
tilt
5 Citations (Scopus)

Spectral similarity and PRI variations for a boreal forest stand using multi-angular airborne imagery

Markiet, V., Hernández-Clemente, R. & Mõttus, M., 1 Oct 2017, In : Remote Sensing. 9, 10, 1005.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
airborne sensing
boreal forest
reflectance
canopy
spatial resolution
7 Citations (Scopus)

Theoretical algorithm and application of a double-integrating sphere system for measuring leaf transmittance and reflectance spectra

Mõttus, M., Hovi, A. & Rautiainen, M., 20 Jan 2017, In : Applied Optics. 56, 3, p. 563-571 9 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
leaves
transmittance
reflectance
ruggedness
spectroradiometers
4 Citations (Scopus)

Upscaling of solar induced chlorophyll fluorescence from leaf to canopy using the dart model and a realistic 3D forest scene

Liu, W., Atherton, J., Mõttus, M., MacArthur, A., Teemu, H., Maseyk, K., Robinson, I., Honkavaara, E. & Porcar-Castell, A., 19 Oct 2017, Frontiers in Spectral imaging and 3D Technologies for Geospatial Solutions. Honkavaara, E., Hu, B., Karantzalos, K., Liang, X., Müller, R., Nocerino, E., Pölönen, I. & Rönnholm, P. (eds.). International Society for Photogrammetry and Remote Sensing ISPRS, p. 107-111 (International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol. XLII-3/W3).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Open Access
upscaling
Chlorophyll
forest canopy
chlorophyll
fluorescence
2016
10 Citations (Scopus)

Analyses of impact of needle surface properties on estimation of needle absorption spectrum: Case study with coniferous needle and shoot samples

Yang, B., Knyazikhin, Y., Lin, Y., Yan, K., Chen, C., Park, T., Choi, S., Mõttus, M., Rautiainen, M., Myneni, R. B. & Yan, L., 2016, In : Remote Sensing. 8, 7, 563.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
13 Citations (Scopus)

Consistency of vegetation index seasonality across the Amazon rainforest

Maeda, E. E., Moura, Y. M., Wagner, F., Hilker, T., Lyapustin, A. I., Wang, Y., Chave, J., Mõttus, M., Aragão, L. E. O. C. & Shimabukuro, Y., 2016, In : International Journal of Applied Earth Observation and Geoinformation. 52, p. 42-53

Research output: Contribution to journalArticleScientificpeer-review

vegetation index
rainforest
seasonality
atmospheric correction
MODIS
10 Citations (Scopus)

Multidecadal analysis of forest growth and albedo in boreal Finland

Lukeš, P., Stenberg, P., Mõttus, M., Manninen, T. & Rautiainen, M., 2016, In : International Journal of Applied Earth Observation and Geoinformation. 52, p. 296-305

Research output: Contribution to journalArticleScientificpeer-review

albedo
reflectance
forest inventory
Biomass
Satellites
25 Citations (Scopus)

Photon recollision probability in modelling the radiation regime of canopies: A review

Stenberg, P., Mõttus, M. & Rautiainen, M., 2016, In : Remote Sensing of Environment. 183, p. 98-108

Research output: Contribution to journalReview ArticleScientificpeer-review

Photons
canopy
Radiation
modeling
wavelengths
8 Citations (Scopus)

Spatial variation of canopy PRI with shadow fraction caused by leaf-level irradiation conditions

Takala, T. L. H. & Mõttus, M., 2016, In : Remote Sensing of Environment. 182, p. 99-112

Research output: Contribution to journalArticleScientificpeer-review

reflectance
spatial variation
irradiation
canopy
Irradiation
8 Citations (Scopus)

Tracking the Seasonal Dynamics of Boreal Forest Photosynthesis Using EO-1 Hyperion Reflectance: Sensitivity to Structural and Illumination Effects

Hernández-Clemente, R., Kolari, P., Porcar-Castell, A., Korhonen, L. & Mõttus, M., 2016, In : IEEE Transactions on Geoscience and Remote Sensing. 54, 9, p. 5105-5116

Research output: Contribution to journalArticleScientificpeer-review

Hyperion
Photosynthesis
boreal forest
reflectance
photosynthesis
2015
23 Citations (Scopus)

Classification of crops across heterogeneous agricultural landscape in Kenya using AisaEAGLE imaging spectroscopy data

Piiroinen, R., Heiskanen, J., Mõttus, M. & Pellikka, P., 2015, In : International Journal of Applied Earth Observation and Geoinformation. 39, p. 1-8

Research output: Contribution to journalArticleScientificpeer-review

Crops
agricultural land
spectroscopy
Spectroscopy
Imaging techniques
24 Citations (Scopus)

Diffuse sky radiation influences the relationship between canopy PRI and shadow fraction

Mõttus, M., Takala, T. L. H., Stenberg, P., Knyazikhin, Y., Yang, B. & Nilson, T., 2015, In : ISPRS Journal of Photogrammetry and Remote Sensing. 105, p. 54-60

Research output: Contribution to journalArticleScientificpeer-review

sky radiation
canopies
reflectance
canopy
Radiation
15 Citations (Scopus)

Retrieval of leaf chlorophyll content in field crops using narrow-band indices: Effects of leaf area index and leaf mean tilt angle

Zou, X. C., Hernández-Clemente, R., Tammeorg, P., Torres, C. L., Stoddard, F. L., Mäkelä, P., Pellikka, P. & Mõttus, M., 2015, In : International Journal of Remote Sensing. 36, 24, p. 6031-6055

Research output: Contribution to journalArticleScientificpeer-review

tilt
leaf area index
vegetation index
chlorophyll
crop
15 Citations (Scopus)

Retrieving crop leaf tilt angle from imaging spectroscopy data

Zou, X. C. & Mõttus, M., 2015, In : Agricultural and Forest Meteorology. 205, p. 73-82

Research output: Contribution to journalArticleScientificpeer-review

leaf angle
tilt
reflectance
spectroscopy
image analysis
49 Citations (Scopus)

Sunlight mediated seasonality in canopy structure and photosynthetic activity of Amazonian rainforests

Bi, J., Knyazikhin, Y., Choi, S., Park, T., Barichivich, J., Ciais, P., Fu, R., Ganguly, S., Hall, F., Hilker, T., Huete, A., Jones, M., Kimball, J., Lyapustin, A. I., Mõttus, M., Nemani, R. R., Piao, S., Poulter, B., Saleska, S. R., Saatchi, S. S. & 3 others, Xu, L., Zhou, L. M. & Myneni, R. B., 2015, In : Environmental Research Letters. 10, 6, 064014.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Sunlight
rainforest
seasonality
dry season
canopy
71 Citations (Scopus)

The fourth phase of the radiative transfer model intercomparison (RAMI) exercise: Actual canopy scenarios and conformity testing

Widlowski, J. L., Mio, C., Disney, M., Adams, J., Andredakis, I., Atzberger, C., Brennan, J., Busetto, L., Chelle, M., Ceccherini, G., Colombo, R., Côté, J. F., Eenmäe, A., Essery, R., Gastellu-Etchegorry, J. P., Gobron, N., Grau, E., Haverd, V., Homolová, L., Huang, H. & 22 others, Hunt, L., Kobayashi, H., Koetz, B., Kuusk, A., Kuusk, J., Lang, M., Lewis, P. E., Lovell, J. L., Malenovský, Z., Meroni, M., Morsdorf, F., Mõttus, M., Ni-Meister, W., Pinty, B., Rautiainen, M., Schlerf, M., Somers, B., Stuckens, J., Verstraete, M. M., Yang, W., Zhao, F. & Zenone, T., 1 Nov 2015, In : Remote Sensing of Environment. 169, p. 418-437 20 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Radiative transfer
radiative transfer
exercise
canopy
Testing
2014
3 Citations (Scopus)
Spectral resolution
Forestry
Geographic information systems
fertility
forestry

Corrigendum to "Geographical gradients in boreal forest albedo and structure in Finland" [Remote Sens. Environ. 152 (2014) 526-535], DOI 10.1016/j.rse.2014.06.023

Lukeš, P., Rautiainen, M., Manninen, T., Stenberg, P. & Mõttus, M., 1 Dec 2014, In : Remote Sensing of Environment. 155, 1 p.

Research output: Contribution to journalOther journal contributionScientific

17 Citations (Scopus)

Geographical gradients in boreal forest albedo and structure in Finland

Lukeš, P., Rautiainen, M., Manninen, T., Stenberg, P. & Mõttus, M., 1 Jan 2014, In : Remote Sensing of Environment. 152, p. 526-535 10 p.

Research output: Contribution to journalArticleScientificpeer-review

albedo (reflectance)
boreal forests
boreal forest
Finland
albedo
38 Citations (Scopus)

Photographic measurement of leaf angles in field crops

Zou, X., Mõttus, M., Tammeorg, P., Torres, C. L., Takala, T., Pisek, J., Mäkelä, P., Stoddard, F. L. & Pellikka, P., 15 Jan 2014, In : Agricultural and Forest Meteorology. 184, p. 137-146 10 p.

Research output: Contribution to journalArticleScientificpeer-review

leaf angle
field crops
crop
canopy
tilt
3 Citations (Scopus)

Posterior probability-based optimization of texture window size for image classification

Liu, J., Liu, H., Heiskanen, J., Mõttus, M. & Pellikka, P., 3 Aug 2014, In : Remote Sensing Letters. 5, 8, p. 753-762 10 p.

Research output: Contribution to journalArticleScientificpeer-review

Image classification
image classification
Textures
texture
size selection
8 Citations (Scopus)

Quantitative characterization of clumping in Scots pine crowns

Stenberg, P., Mõttus, M., Rautiainen, M. & Sievänen, R., 1 Sep 2014, In : Annals of Botany. 114, 4, p. 689-694 6 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Pinus sylvestris
tree crown
shade
canopy
12 Citations (Scopus)

Seasonal course of the spectral properties of alder and birch leaves

Mottus, M., Sulev, M. & Hallik, L., 1 Jan 2014, In : IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 7, 6, p. 2496-2505 10 p., 6708451.

Research output: Contribution to journalArticleScientificpeer-review

reflectance
Infrared absorption
Chlorophyll
Needles
Time series
2013
198 Citations (Scopus)

Hyperspectral remote sensing of foliar nitrogen content

Knyazikhin, Y., Schull, M. A., Stenberg, P., Mõttus, M., Rautiainen, M., Yang, Y., Marshak, A., Carmona, P. L., Kaufmann, R. K., Lewis, P., Disney, M. I., Vanderbilt, V., Davis, A. B., Baret, F., Jacquemoud, S., Lyapustin, A. & Myneni, R. B., 15 Jan 2013, In : Proceedings of the National Academy of Sciences of the United States of America. 110, 3

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Nitrogen
Climate
Artifacts
64 Citations (Scopus)

Is the spherical leaf inclination angle distribution a valid assumption for temperate and boreal broadleaf tree species?

Pisek, J., Sonnentag, O., Richardson, A. D. & Mõttus, M., 15 Feb 2013, In : Agricultural and Forest Meteorology. 169, p. 186-194 9 p.

Research output: Contribution to journalArticleScientificpeer-review

leaf angle
canopy
leaf area index
distribution
leaves
53 Citations (Scopus)

Optical properties of leaves and needles for boreal tree species in Europe

Lukeš, P., Stenberg, P., Rautiainen, M., Mõttus, M. & Vanhatalo, K. M., 26 Apr 2013, In : Remote Sensing Letters. 4, 7, p. 667-676 10 p.

Research output: Contribution to journalArticleScientificpeer-review

optical property
Needles
Optical properties
reflectance
transmittance
7 Citations (Scopus)

Reply to Ollinger et al. Remote sensing of leaf nitrogen and emergent ecosystem properties

Knyazikhin, Y., Lewis, P., Disney, M. I., Mõttus, M., Rautiainen, M., Stenberg, P., Kaufmann, R. K., Marshak, A., Schull, M. A., Carmona, P. L., Vanderbilt, V., Davis, A. B., Baret, F., Jacquemoud, S., Lyapustin, A., Yang, Y. & Myneni, R. B., 2 Jul 2013, In : Proceedings of the National Academy of Sciences of the United States of America. 110, 27

Research output: Contribution to journalOther journal contributionScientific

Open Access
8 Citations (Scopus)

Reply to Townsend et al. Decoupling contributions from canopy structure and leaf optics is critical for remote sensing leaf biochemistry

Knyazikhin, Y., Lewis, P., Disney, M. I., Stenberg, P., Mõttus, M., Rautiainen, M., Kaufmann, R. K., Marshak, A., Schull, M. A., Carmona, P. L., Vanderbilt, V., Davis, A. B., Baret, F., Jacquemoud, S., Lyapustin, A., Yang, Y. & Myneni, R. B., 19 Mar 2013, In : Proceedings of the National Academy of Sciences of the United States of America. 110, 12

Research output: Contribution to journalOther journal contributionScientific

Open Access
10 Citations (Scopus)

Scaling PRI between coniferous canopy structures

Mottus, M. & Rautiainen, M., 9 Apr 2013, In : IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 6, 2, p. 708-714 7 p., 6494342.

Research output: Contribution to journalArticleScientificpeer-review

Needles
reflectance
canopy
shoot
NDVI
37 Citations (Scopus)

Sensitivity of narrowband vegetation indices to boreal forest LAI, reflectance seasonality and species composition

Heiskanen, J., Rautiainen, M., Stenberg, P., Mõttus, M. & Vesanto, V. H., 1 Jan 2013, In : ISPRS Journal of Photogrammetry and Remote Sensing. 78, p. 1-14 14 p.

Research output: Contribution to journalArticleScientificpeer-review

leaf area index
vegetation index
vegetation
boreal forest
seasonality
2012
24 Citations (Scopus)

A note on upscaling coniferous needle spectra to shoot spectral albedo

Rautiainen, M., Mõttus, M., Yáñez-Rausell, L., Homolová, L., Malenovský, Z. & Schaepman, M. E., 15 Feb 2012, In : Remote Sensing of Environment. 117, p. 469-474 6 p.

Research output: Contribution to journalArticleScientificpeer-review

upscaling
Needles
albedo
shoot
shoots
4 Citations (Scopus)

Atmospheric correction of a seasonal time series of Hyperion EO-1 images and red edge inflection point calculation

Vesanto, V. H., Mõttus, M., Heiskanen, J., Rautiainen, M. & Majasalmi, T., 1 Jan 2012, 2012 4th Workshop on Hyperspectral Image and Signal Processing, WHISPERS 2012. IEEE Computer Society Press, 6874307

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Time series
Interpolation
Polynomials

Effects of shoot-level structure on narrowband vegetation indices for Scots pine

Mõttus, M. & Rautiainen, M., 1 Jan 2012, 2012 4th Workshop on Hyperspectral Image and Signal Processing, WHISPERS 2012. IEEE Computer Society Press, 6874261

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Needles
Photons
Productivity
Spectroscopy
Imaging techniques

Hyperspectral datasets of boreal forest understory vegetation in Finland

Rautiainen, M., Heiskanen, J., Mõttus, M. & Peltoniemi, J., 1 Jan 2012, 2012 4th Workshop on Hyperspectral Image and Signal Processing, WHISPERS 2012. IEEE Computer Society Press, 6874287

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Radiative transfer
Remote sensing
Monitoring