Oliver Sonnentag
- Professeur agrégé
-
Faculté des arts et des sciences - Département de géographie
Complexe des sciences office B-6011
Web : ResearchGate
Web : Site web de l’unité de recherche
Web : LinkedIn
Web : Google Scholar
Web : Autre site web
Affiliations
- Titulaire – Chaire de recherche du Canada en biogéosciences atmosphériques en hautes latitudes
- Membre – CEF — Centre d'étude de la forêt
Education Programs
- Fundamental and Applied Sciences Life Sciences Environment and Sustainable Development
- Environment and Sustainable Development Humanities Fundamental and Applied Sciences
- Humanities Fundamental and Applied Sciences Environment and Sustainable Development
- Fundamental and Applied Sciences
- Fundamental and Applied Sciences
- Fundamental and Applied Sciences Health Sciences Life Sciences Environment and Sustainable Development
- Life Sciences Environment and Sustainable Development Fundamental and Applied Sciences Health Sciences
- Fundamental and Applied Sciences Health Sciences Life Sciences
- Teaching and Education Sciences
- Life Sciences Environment and Sustainable Development Fundamental and Applied Sciences
- Fundamental and Applied Sciences Life Sciences Environment and Sustainable Development
Courses
- GEO2122 Climatologie
Areas of Expertise
- Atmospheric Biogeosciences
- Arctic region
- Boreal region
- Micrometeorological measurments
- Carbon cycle
- Water cycle
- Ecosystem modeling
- Atmospheric boundary layer
- Climatic changes
- Environmental changes
- Disturbance ecology
- Optical remote sensing
- Model Building
- Territory mapping
- Biogeochemistry of terrestrial ecosystems
- Great Canadian North
Student supervision Expand all Collapse all
Variability in tree-water relations from tree-line to tree-line in Canada's western boreal forest
Thèses et mémoires dirigés
/
2024
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2024
Optimisation des paramètres de carbone de sol dans le modèle CLASSIC à l'aide d'optimisation bayésienne et d'observations
Thèses et mémoires dirigés
/
2023
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2023
Surface-atmosphere energy exchanges and their effects on surface climate and boundary layer dynamics in the forest-tundra ecotone in northwestern Canada
Thèses et mémoires dirigés
/
2023
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2023
Contrôles environnementaux de la variabilité interannuelle de la reprise et de la fin de la photosynthèse au sein de la forêt boréale nord-américaine
Thèses et mémoires dirigés
/
2021
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2021
Thawing permafrost and land-atmosphere interactions of boreal forest-wetland landscapes in northwestern Canada
Thèses et mémoires dirigés
/
2017
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2017
Échanges d’énergie et d’eau des écosystèmes nordiques dans un contexte de changement climatique
Thèses et mémoires dirigés
/
2016
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2016
Effet de la végétation sur la variabilité de la profondeur de dégel à petite échelle dans un paysage de tourbières en forêt boréale dans les Territoires du Nord-Ouest
Thèses et mémoires dirigés
/
2015
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2015
Research projects Expand all Collapse all
Centre d'étude de la forêt (CEF) - renouvellement Projet de recherche au Canada / 2023 - 2027
Lead researcher :
Daniel Kneeshaw
Co-researchers :
Oliver Sonnentag
Funding sources:
FRQNT/Fonds de recherche du Québec - Nature et technologies (FQRNT)
Grant programs:
PVXXXXXX-(RS) Programme de regroupements stratégiques
Can-Peat: Canada’s peatlands as nature-based solutions to climate change Projet de recherche au Canada / 2023 - 2027
Lead researcher :
Maria Strack
Co-researchers :
Oliver Sonnentag
Funding sources:
Environnement et changement climatique Canada
Grant programs:
Towards a constrained estimate of boreal forest productivity across northwestern North America Projet de recherche au Canada / 2018 - 2026
Lead researcher :
Oliver Sonnentag
Funding sources:
CRSNG/Conseil de recherches en sciences naturelles et génie du Canada (CRSNG)
Grant programs:
PVX20965-(RGP) Programme de subvention à la découverte individuelle ou de groupe
Towards a constrained estimate of boreal forest productivity across northwestern North America Projet de recherche au Canada / 2018 - 2026
Lead researcher :
Oliver Sonnentag
Funding sources:
CRSNG/Conseil de recherches en sciences naturelles et génie du Canada (CRSNG)
Grant programs:
PV108454-(RGPNS) Suppléments aux subventions à la découverte en recherche nordique
Knowledge co-development and management on nature-based climate solutions in the Inuvialuit Settlement Region and the Gwich’in Settlement Area Projet de recherche au Canada / 2024 - 2025
Lead researcher :
Oliver Sonnentag
Funding sources:
Savoir polaire Canada
Grant programs:
Beavers and Socio-ecological Resilience in Inuit Nunangat, Projet de recherche au Canada / 2022 - 2025
Lead researcher :
Oliver Sonnentag
Co-researchers :
Philip Marsh
Funding sources:
FRQNT/Fonds de recherche du Québec - Nature et technologies (FQRNT)
Grant programs:
PVXXXXXX-Canada-Inuit Nunangat-Royaume-Uni dans l'Arctique (CINUK)
Using satellite L-band observations to incorporate plant hydraulic functioning into a terrestrial ecosystem model to project future boreal forest response to drought conditions and heat stress Projet de recherche au Canada / 2021 - 2025
Lead researcher :
Oliver Sonnentag
Co-researchers :
Jennifer Baltzer
,
Alexandre Roy
,
Aaron Berg
Funding sources:
Agence spatiale canadienne
Grant programs:
NSERC Permafrost Partnership Network for Canada Projet de recherche au Canada / 2020 - 2025
Lead researcher :
Stephan Gruber
Co-researchers :
Oliver Sonnentag
Funding sources:
CRSNG/Conseil de recherches en sciences naturelles et génie du Canada (CRSNG)
Grant programs:
PVX20966-Programme de subventions de réseaux stratégiques
LEAP Training tomorrow’s leaders in permafrost thaw and northern research Projet de recherche au Canada / 2023 - 2024
Lead researcher :
Stephan Gruber
Co-researchers :
Oliver Sonnentag
Funding sources:
CRSNG/Conseil de recherches en sciences naturelles et génie du Canada (CRSNG)
Grant programs:
PV118026-FONCER : Prog. formation orientée nouveauté, la collaboration et l'expérience en recherche
Thème 2 : IA, Biodiversité et changements climatiques Projet de recherche au Canada / 2022 - 2024
Lead researcher :
Etienne Laliberté
Funding sources:
SPIIE/Secrétariat des programmes interorganismes à l’intention des établissements
Grant programs:
PVXXXXXX-Fonds d'excellence en recherche Apogée Canada
Réseau ArcticNet // Trying to make fetch happen: including tall shrubs in the atmospheric carbon budget of western Inuit Nunangat Projet de recherche au Canada / 2022 - 2024
Co-researchers :
Oliver Sonnentag
Funding sources:
Secrétariat Inter-Conseil et Réseaux des centres d'excellence (RCE)
Grant programs:
PV143493-(RCE) Réseaux de centres d'excellence
Développement de nouveaux produits gel/dégel multicapteurs micro-onde pour l’Amérique du Nord Projet de recherche au Canada / 2020 - 2024
Lead researcher :
Oliver Sonnentag
Co-researchers :
Alexandre Roy
Funding sources:
Agence spatiale canadienne
Grant programs:
Chaire de recherche du Canada en Atmospheric Biogeosciences in High Latitudes Projet de recherche au Canada / 2019 - 2024
Lead researcher :
Oliver Sonnentag
Funding sources:
SPIIE/Secrétariat des programmes interorganismes à l’intention des établissements
Grant programs:
PVX50399-Chaires de recherche du Canada
Northern Water Futures Projet de recherche au Canada / 2017 - 2024
Lead researcher :
Jennifer Baltzer
,
William Quinton
Co-researchers :
Oliver Sonnentag
Funding sources:
SPIIE/Secrétariat des programmes interorganismes à l’intention des établissements
Grant programs:
PVXXXXXX-Fonds d'excellence en recherche Apogée Canada
Renforcement des capacités locales et communautaires pour le suivi micrométéorologique Projet de recherche au Canada / 2021 - 2023
Co-researchers :
Oliver Sonnentag
Funding sources:
Centre des Compétences futures
Grant programs:
Characterizing and quantifying long-term land cover changes at abandoned oil and natural gas well locations across the Northwest Territories Projet de recherche au Canada / 2021 - 2021
Funding sources:
Gouvernement des Territoires du Nord-Ouest
Grant programs:
Supplément COVID-19 CRSNG_Towards a constrained estimate of boreal forest productivity across northwestern North America Projet de recherche au Canada / 2020 - 2021
Lead researcher :
Oliver Sonnentag
Funding sources:
CRSNG/Conseil de recherches en sciences naturelles et génie du Canada (CRSNG)
Grant programs:
PVXXXXXX-Supplément à l’appui des étudiants, des stagiaires postdoctoraux et du personnel de soutien à la recherche COVID-19
Northern Water Futures/postdoc Projet de recherche au Canada / 2019 - 2021
Lead researcher :
Jennifer Baltzer
,
William Quinton
Co-researchers :
Oliver Sonnentag
Funding sources:
SPIIE/Secrétariat des programmes interorganismes à l’intention des établissements
Grant programs:
PVXXXXXX-Fonds d'excellence en recherche Apogée Canada
Towards a constrained estimate of boreal forest productivity across northwestern North America Projet de recherche au Canada / 2018 - 2021
Lead researcher :
Oliver Sonnentag
Co-researchers :
Jennifer Baltzer
Funding sources:
CRSNG/Conseil de recherches en sciences naturelles et génie du Canada (CRSNG)
Grant programs:
PVXXXXXX-(OIR) Outils et d'instruments de recherche (de 7 001 $ à 150 000 $)
An integrated monitoring program for a boreal forest watershed with discontinous permafrost responding to climate warming and increasing anthropogenic pressures Projet de recherche au Canada / 2018 - 2021
Lead researcher :
Oliver Sonnentag
Co-researchers :
David Olefeldt
Funding sources:
Gouvernement des Territoires du Nord-Ouest
Grant programs:
Methane emissions across the Inuvik to Tuktoyaktuk Region Projet de recherche au Canada / 2019 - 2020
Lead researcher :
Oliver Sonnentag
Funding sources:
Gouvernement des Territoires du Nord-Ouest
Grant programs:
Improving Canada’s climate change projections by incorporating Arctic shrub feedbacks Projet de recherche au Canada / 2018 - 2020
Lead researcher :
Elyn Humphreys
Co-researchers :
Oliver Sonnentag
Funding sources:
Savoir polaire Canada
Grant programs:
Establishment of a meso-network of micrometerological towers for eddy covariance measurements along a latitudinal climate and permafrost gradient in western Canada Projet de recherche au Canada / 2016 - 2020
Lead researcher :
Oliver Sonnentag
Funding sources:
FCI/Fondation canadienne pour l'innovation
Grant programs:
PVXXXXXX-Fonds d'exploitation des infrastructures (FEI)
Consortium for Permafrost Ecosystems in Transition CPET Projet de recherche au Canada / 2017 - 2019
Lead researcher :
William Quinton
Co-researchers :
Oliver Sonnentag
Funding sources:
Savoir polaire Canada
Grant programs:
CHAIRE DE RECHERCHE DU CANADA - ATMOSPHERIC BIOGEOSCIENCES AT HIGH LATITUDES Projet de recherche au Canada / 2014 - 2019
Lead researcher :
Oliver Sonnentag
Funding sources:
SPIIE/Secrétariat des programmes interorganismes à l’intention des établissements
Grant programs:
PVX50399-Chaires de recherche du Canada
INFLUENCE OF CHANGING ACTIVE-LAYER THICKNESS ON PERMAFROST PEATLAND TRACE GAS EXCHANGES AND CARBON BALANCE (PERPLEX) Projet de recherche au Canada / 2012 - 2019
Lead researcher :
Oliver Sonnentag
Funding sources:
CRSNG/Conseil de recherches en sciences naturelles et génie du Canada (CRSNG)
Grant programs:
PVX20965-(RGP) Programme de subvention à la découverte individuelle ou de groupe
INFLUENCE OF CHANGING ACTIVE-LAYER THICKNESS ON PERMAFROST PEATLAND TRACE GAS EXCHANGES AND CARBON BALANCE (PERPLEX) Projet de recherche au Canada / 2012 - 2019
Lead researcher :
Oliver Sonnentag
Funding sources:
CRSNG/Conseil de recherches en sciences naturelles et génie du Canada (CRSNG)
Grant programs:
PV108454-(RGPNS) Suppléments aux subventions à la découverte en recherche nordique
PORTION APPAREILLAGE- VERS UNE MEILLEURE COMPREHENSION DU TRANSPORT AQUEUX ET EVASIF DU CARBONE DANS UN PAYSAGE FORET-TOURBIERE EN ZONE DE PERGELISOL DISCONTINU EN DEGRADATION RAPIDE Projet de recherche au Canada / 2013 - 2017
Lead researcher :
Oliver Sonnentag
Co-researchers :
Timothy R Moore
Funding sources:
FRQNT/Fonds de recherche du Québec - Nature et technologies (FQRNT)
Grant programs:
PV113724-(PR) Projets de recherche en équipe (et possibilité d'équipement la première année)
INFLUENCE OF CHANGING ACTIVE-LAYER THICKNESS ON PERMAFROST PEATLAND TRACE GAS EXCHANGES AND CARBON BALANCE (PERPLEX) Projet de recherche au Canada / 2013 - 2017
Lead researcher :
Oliver Sonnentag
Funding sources:
FCI/Fondation canadienne pour l'innovation
Grant programs:
VERS UNE MEILLEURE COMPREHENSION DU TRANSPORT AQUEUX ET EVASIF DU CARBONE DANS UNE PAYSAGE FORET-TOURBIERE EN ZONE DE PERGELISOL DISCONTINU EN DEGRADATION RAPIDE. Projet de recherche au Canada / 2013 - 2017
Lead researcher :
Oliver Sonnentag
Co-researchers :
Timothy R Moore
Funding sources:
FRQNT/Fonds de recherche du Québec - Nature et technologies (FQRNT)
Grant programs:
PV113724-(PR) Projets de recherche en équipe (et possibilité d'équipement la première année)
ESTABLISHMENT OF A MESO-NETWORK OF MICROMETEROLOGICAL TOWERS FOR EDDY COVARIANCE MEASUREMENTS ALONG A LATITUDINAL CLIMATE AND PERMAFROST GRADIENT IN WESTERN CANADA Projet de recherche au Canada / 2014 - 2015
Lead researcher :
Oliver Sonnentag
Funding sources:
FCI/Fondation canadienne pour l'innovation
Grant programs:
QUANTIFYING CARBON, WATER AND ENERGY FLUXES OF NORTHERN ECOSYSTEMS UNDER THE INFLUENCE OF RAPIDLY CHANGING PERMAFROST REGIMES Projet de recherche au Canada / 2013 - 2015
Lead researcher :
Oliver Sonnentag
Co-researchers :
Timothy R Moore
Funding sources:
CRSNG/Conseil de recherches en sciences naturelles et génie du Canada (CRSNG)
Grant programs:
PVXXXXXX-(OIR) Outils et d'instruments de recherche (OIR) -1 -(de 7 001 $ à 150 000 $)
INFLUENCE OF CHANGING ACTIVE-LAYER THICKNESS ON PERMAFROST PEATLAND TRACE GAS EXCHANGES AND CARBON BALANCE (PERPLEX) Projet de recherche au Canada / 2012 - 2013
Lead researcher :
Oliver Sonnentag
Funding sources:
FCI/Fondation canadienne pour l'innovation
Grant programs:
Publications Expand all Collapse all
*Membres de mon groupe de recherche.
- Quinton, W.L., Berg, A.A., Braverman, M. et al. incl. Sonnentag, O. (in review), A synthesis of three decades of eco-hydrological research at Scotty Creek, NWT, Canada.
- Natalo, S.M., Watts, J.D., Potter, S. et al. incl. Sonnentag, O. (in review), Substantial winter carbon dioxide losses shift the Arctic to a carbon source under current and future climates.
- Knox, S.H., Jackson, R.B., Poulter, B. et al. incl. Sonnentag, O. (in review), FLUXNET-methane synthesis activity: objectives, observations, and future directions.
- Stone, L., Fang, X., Hayes, K. et al. incl. Sonnentag, O. (in review), Modelling the effects of permafrost loss on discharge from a wetland-dominated basin in the discontinuous permafrost zone in northwestern Canada.
- Eitel, J.U.H., Maguire, A., Boelman, N. et al. incl. Sonnentag, O. (in revision), Remotely sensing tree physiology at the northern treeline: Do late-season changes in the photochemical reflectance index respond to climate or photoperiod? Remote Sensing of Environment.
- Gielen, B., Op de Beeck, M., Acosta, N. et al. incl. Sonnentag, O. (accepted), Ancillary vegetation measurements at ICOS ecosystem stations. International Agrophysics.
- Franz, D., Acosta, M., Altimir, N. et al. incl. Sonnentag, O. (accepted), Towards long-term standardised carbon and greenhouse gas observations for monitoring Europe's terrestrial ecosystems. International Agrophysics.
- *Roy, A., Toose, P., Mavrovic, A., *Pappas, C. et al. incl. Sonnentag, O. (accepted), Use of L-band ground-based radiometers for freeze/thaw retrieval in a boreal forest site. 38th IEEE International Geosciences and Remote Sensing Symposium (IGARSS).
- Loranty, M.M., Abbott, B.W., Blok, D. et al. incl. Sonnentag, O. (2018), Changing ecosystem influences on soil thermal regimes in northern high-latitude permafrost regions. Biogeosciences, 15, 5287–5313.
- Mavrovic, A., *Roy, A., Royer, A., Filali, B., Boone, F., *Pappas, C., Sonnentag, O. (2018), Dielectric characterization of vegetation at L-band using an open-ended coaxial probe. Geoscientific Instrumentation, Methods and Data Systems, 7, 195–208.
- Peichl, M., Gazovic, M., Vermeij, de Goede, E., Sonnentag, O., Limpens, J., Nilsson, M. (2018), Peatland vegetation composition and phenology drive the seasonal trajectory of maximum gross primary production. Scientific Reports, 8, 8012.
- Peters, R., Fonti, P., Frank, D., Poyatos, R., *Pappas, C. et al. incl. Sonnentag, O. (2018), Quantification of uncertainties in tree sap flow measured with the thermal dissipation method. New Phytologist, 219, 1283-1299.
- Pisek, J., Buddenbaum, H., Camacho, F. et al. incl. Sonnentag, O. (2018), Data synergy between leaf area index and clumping index from Earth observation products using photon recollision probability theory. Remote Sensing of Environment, 215, 1-6.
- *Warren, R.K., *Pappas, C., *Helbig, M., Chasmer, L.E., Berg, A.A., Baltzer, J.L., Quinton, W.L., Sonnentag, O. (2018), Minor contribution of overstory transpiration to landscape evapotranspiration in boreal forest peatlands. Ecohydrology, 11, e1975.
- *Pappas, C., Matheny, A., Baltzer, J.L., Barr, A., Black, T.A., Bohrer, G.A., Detto, M., Maillet, J., *Roy, A., Sonnentag, O., Stephens, J. (2018), Boreal tree hydrodynamics: asynchronous, diverging, yet complementary. Tree Physiology, 38, 953-964.
- Fisher, J.B., Hayes D.J., Schwalm, C.R. et al. incl. Sonnentag, O. (2018), Missing pieces to modelling the Arctic-Boreal puzzle. Environmental Research Letters, 13, 020202.
- Filippa, G., Cremonese, E., Migliavacca, M., Galvagno, M., Sonnentag, O., et al. (2018), NDVI derived from near-infrared-enabled digital cameras: applicability across different plant functional types. Agricultural and Forest Meteorology, 249, 275-285.
- Rapinski, M., *Payette, F., Sonnentag, O., Herrmann, T.M., Royer, M.-J.S., Currier, A., Siegwart Collier, L., Hermanutz, L., Guanish, G. (2018), Listening to Inuit and Naskapi peoples in the eastern Canadian Subarctic: combining local observations with gridded climate data. Regional Environmental Change, 18, 189-203.
- *Helbig, M., Quinton, W. L., Sonnentag, O. (2017), Warmer spring conditions increase annual methane emissions from a boreal peat landscape with sporadic permafrost. Environmental Research Letters, 12, 115009.
- *Roy, A., Toose, P., Derksen, C., Rowlandson, T., Berg, A., Lemmetyinen, J., Royer, A., Tetlock, E., Helgason, W., Sonnentag, O. (2017), Spatial variability of L-band brightness temperature during freeze/thaw events over a prairie environment. Remote Sensing, 9, 894-910.
- *Helbig, M., Chasmer, L., Desai, A., Kljun, N., Quinton, W.L., Sonnentag, O. (2017), Direct and indirect climate change effects on carbon dioxide fluxes in a thawing boreal forest-wetland landscape. Global Change Biology, 23, 3231-3248.
- Pelletier, N., Talbot, J., Olefeldt, D., Turetsky, M., Blodau, C., Sonnentag, O., Quinton, W. L. (2017), Influence of Holocene permafrost aggradation and thaw on the paleoecology and carbon storage of a peatland complex in northwestern Canada. The Holocene, 27, 1391-1405.
- *Helbig, M., Chasmer, L., Kljun, N., Quinton, W.L., Treat, C.C., Sonnentag, O. (2017), The positive net radiative greenhouse gas forcing of increasing methane emissions from a thawing boreal forest-wetland landscape. Global Change Biology, 23, 2413-2427.
- *Roy, A., Toose, P., Derksen, C., Royer, A.,Makrovic, A., et al. incl. Sonnentag, O. (2016), Analysis of L-band brightness temperature response to freeze/thaw in two prairie environments from surface-based radiometer measurements. 36th IEEE International Geosciences and Remote Sensing Symposium (IGARSS), 1667-1670.
- *Helbig, M., *Wischnewski, K., Kljun, N., Chasmer, L., Quinton, W. L., Detto, M., Sonnentag, O. (2016), Regional cooling and wetting eect of permafrost thaw-induced boreal forest loss in the sporadic permafrost zone. Global Change Biology, 22, 4048 4066.
- Moore, C., Brown, T., Keenan, T., Duursma, R., et al. incl. Sonnentag, O. (2016), Australian vegetation phenology: new insights from satellite remote sensing and digital repeat photography. Biogeosciences, 17, 5085-5102.
- *Roy, A., Royer, A., Derksen, C., Langlois, A., Sonnentag, O. (2016), Monitoring boreal and Arctic freeze/thaw with the first year of SMAP brightness temperatures. 14th Specialist Meeting on MICROwave RADiometry and Remote Sensing of the Environment (MICRORAD), 82-84.
- *Helbig, M., *Wischnewski, K., *Gosselin, G.H., Biraud, S.C., Bogoev, I., Chan, W.S., Euskirchen, E.S., Glenn, A.J., Marsh, P.M., Quinton, W.L., Sonnentag, O. (2016), Addressing a systematic bias in carbon dioxide flux measurements with the EC150 and the IRGASON open-path gas analyzers, Agricultural and Forest Meteorology, 228, 349-359.
- Hwang, Y., Ryu, Y., Kimm, H., Jiang, C. Lang, M. Sonnentag, O. (2016), Correction for light scattering combined with sub-pixel classification improves estimation of gap fraction from digital cover photography. Agricultural and Forest Meteorology, 222, 32-44.
- *Helbig, M., *Pappas, C., Sonnentag, O. (2016), Permafrost thaw and wildfire: equally important drivers of boreal tree cover changes in the Taiga Plains, Canada. Geophysical Research Letters, 43, GL067193.
- Brown, T.B., Hultine, K., Steltzer, H. et al. incl. Sonnentag, O. (2016), Using phenocams to monitor our changing Earth: towards a global phenocam network. Frontiers in Ecology and the Environment, 14, 84-93. Featured on the cover of the March 2016 issue.
- *Garon-Labreque, M.-É., Léveillé-Bourret, É., *Higgins, K., Sonnentag, O. (2015), Additions to the Boreal flora of the Northwest Territories with a preliminary vascular flora of Scotty Creek. Canadian Field-Naturalist, 129, 349-367.
- Connon, R., Quinton, W., Craig, J., *Hanisch, J., Sonnentag, O. (2015), The hydrology of interconnected bog complexes in discontinuous permafrost regions. Hydrological Processes, 29, 3829-4174.
- Matthes, J.H., Knox, S.H., Sturtevant, C., Sonnentag, O., Verfaillie, J., Baldocchi, D.D. (2015), Predicting landscape-scale CO2 flux at a pasture and rice paddy with long-term hyper spectral canopy reflectance measurements. Biogeosciences, 12, 4577-4595.
- Raabe, K., Pisek, J., Sonnentag, O., Annuk, K. (2015), Variations of leaf inclination angle distribution with height over the growing season and light exposure for eight broadleaf tree species. Agricultural and Forest Meteorology, 214-215, 2-11.
- Detto, M., Asner, G.P., Mueller-Landau, H.C., Sonnentag, O. (2015), Spatial variability in tropical forest leaf area density from multireturn LiDAR and modeling. Journal of Geophysical Research-Biogeosciences, 120, G002774.
- Toomey, M., Friedl, M.A., Frolking, S., Hufkens, K., Klosterman, S., Sonnentag, O., et al., (2015), Greenness indices from digital cameras predict the timing and seasonal dynamics of canopy-scale photosynthesis. Ecological Applications, 25, 99-115.
- Peichl, M., Sonnentag, O., Nilsson, M.B. (2015), Bringing color into the picture - using digital repeat photography to investigate phenology controls of the carbon dioxide exchange in a boreal mire. Ecosystems, 18, 115-131.
- Talbot, J., Roulet, N.T., Sonnentag, O., Moore, T.R. (2014), Increases in aboveground biomass and leaf area 85 years after drainage in a bog. Botany, 92, 713-721.
- Keenan, T.F., Darby, B., Felts, E., Sonnentag, O., Friedl, M.A,, Hufkens, K., O'Keefe, J., Klosterman, S., Munger, J.W., Toomey, M., Richardson, A.D. (2014), Tracking forest phenology and seasonal physiology using digital repeat photography. Ecological Applications, 24, 1478-1489.
- Macfarlane, C., Ryu, Y., Odgen, G.N., Sonnentag, O. (2014), Digital camera photography: exposed and in the raw. Agricultural and Forest Meteorology, 197, 244-253.
- Klosterman, S.T., Hufkens, K., Gray, J., Melaas, E., Sonnentag, O., Lavine, I., Mitchell, L., Norman, R., Friedl, M.A., Richardson, A.D. (2014), Evaluating remote sensing of deciduous forest phenology at multiple spatial scales using PhenoCam imagery. Biogeosciences, 11, 4305-4320.
- Kross, A., Seaquist, J.W., Roulet, N.T., Fernandes, R., Sonnentag, O. (2013), Estimating carbon dioxide exchange rates of contrasting northern peatlands using MODIS satellite data. Remote Sensing of Environment, 137, 234-243.
- Royer, M.-J.S., Herrmann, T.M., Sonnentag, O., Delusca, K., Fortier, D. (2013), Linking Cree hunters' and scientific observations of changing inland ice and meteorological conditions in the subarctic Eastern James Bay region, Canada. Climatic Change, 199, 719-732.
- Peichl, M., Sonnentag, O., Wohlfahrt, G., Baldocchi, D.D., Flanagan, L.B., Kiely, G., Galvagno, M., Gianelle, D., Marcolla, B., Pio, C., Migliavacca, M., Jones, M.B., Saunders, M. (2013), Convergence of potential net ecosystem production across contrasting C3 grasslands. Ecology Letters 16, 502-512.
- Vargas, R., Sonnentag, O., Abramowitz, G., Carrara, A., Correia, A., Kobayashi, D., Papale, D., Pearson, J., Pereira, S., Piao, S., Rambal, S., Baldocchi, D.D. (2013), Drought influences the accuracy of simulated ecosystem fluxes: a model-data meta-analysis for Mediterranean oak woodlands. Ecosystems 16, 749-764.
- Pisek, J., Sonnentag, O., Richardson, A.D., Mottus, M. (2013), Is the spherical leaf inclination angle distribution a valid assumption for temperate and boreal tree species? Agricultural and Forest Meteorology, 169, 186-194. Shared lead authorship between J. Pisek and O. Sonnentag.
- Richardson, A.D., Keenan, T., Migliavacca, M., Ryu, Y., Sonnentag, O., Toomey, M. (2013), Climate change, phenology, and phenological control of vegetation feedbacks to the climate system. Agricultural and Forest Meteorology, 169, 156-173. Invited review.
- Ryu, Y., Verfaillie, J., MacFarlane, C., Kobayashi, H., Sonnentag, O., Vargas, R., Ma, S., Baldocchi, D.D. (2012), A new approach for continuous observation of leaf area index at ecosystem scale using upward-pointing digital cameras. Remote Sensing of Environment, 126, 116-125.
- Sonnentag, O., Hufkens, K., Teshera-Sterne, C., Young, A.M., Friedl, M.A., Braswell, B.H., Miliman, T., O'Keefe, J., Richardson, A.D. (2012), Digital repeat photography for phenological research in forest ecosystems. Agricultural and Forest Meteorology, 152, 159-177.
- Hufkens, K., Richardson, A.D., Friedl, M.A., Keenan, T.F., Sonnentag, O., Bailey, A., O'Keefe, J. (2012), Ecological impacts of a widespread frost event following early spring leaf-out. Global Change Biology, 18, 2365-2377.
- Migliavacca, M., Sonnentag, O., Keenan, T.F., Cescatti, A., O'Keefe, O., Richardson, A.D. (2012), On the uncertainty of phenological responses to climate change, and implications for a terrestrial biosphere model. Biogeosciences, 9, 2063-2083.
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