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  • Matti Mõttus
2020

Evaluating the performance of a double integrating sphere in measurement of reflectance, transmittance, and albedo of coniferous needles

Hovi, A., Mõttus, M., Juola, J., Manoocheri, F., Ikonen, E. & Rautiainen, M., 3 Mar 2020, In : Silva Fennica. 54, 2, 10270.

Research output: Contribution to journalArticle

Open Access
File
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 journalArticle

Open Access
1 Citation (Scopus)

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

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 journalArticle

Open Access
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 Article

Open Access
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 journalArticle

Open Access
1 Citation (Scopus)
Open Access
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 journalArticle

Open Access

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 journalArticle

Open Access
4 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 journalArticle

Open Access
4 Citations (Scopus)

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

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 journalArticle

Open Access
2 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 journalArticle

Open Access
3 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 Article

Open Access
11 Citations (Scopus)
2017

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

20 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 journalArticle

Open Access
5 Citations (Scopus)

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

1 Citation (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 journalArticle

Open Access
7 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 journalArticle

Open Access
5 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 journalArticle

Open Access
8 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
4 Citations (Scopus)
2016

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 journalArticle

Open Access
14 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 journalArticle

14 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 journalArticle

11 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

28 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 journalArticle

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 journalArticle

8 Citations (Scopus)
2015
23 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 journalArticle

24 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

17 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 journalArticle

15 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
54 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
82 Citations (Scopus)
2014
3 Citations (Scopus)

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 contribution

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 journalArticle

18 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

40 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 journalArticle

3 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 journalArticle

Open Access
8 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 journalArticle

12 Citations (Scopus)
2013

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
217 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 journalArticle

71 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 journalArticle

55 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 contribution

Open Access
7 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
9 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 journalArticle

10 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 journalArticle

39 Citations (Scopus)
2012

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 journalArticle

24 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

4 Citations (Scopus)

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