Yu Zhang

Image Yu Zhang
Chercheur scientifique

Recherche et / ou projets en cours

Comprendre et cartographier la répartition du pergélisol et les changements potentiels liés au climat à l'aide d'une modélisation spatiale basée sur la télédétection

- Développement d'un modèle de pergélisol basé sur les processus (NEST)

- Modélisation et cartographie de la répartition du pergélisol et des changements potentiels liés au réchauffement climatique et aux incendies

- Développement d'un ensemble de données climatiques quotidiennes à long terme avec une résolution de 1 km sur le Canada (Met1km) pour soutenir la modélisation et la prévision du pergélisol

- Publication de plus de 50 articles sur le pergélisol, le carbone et les écosystèmes nordiques, ainsi que de près de 30 articles sur les écosystèmes et la production des cultures

- Travaille actuellement sur un projet de modélisation et de cartographie du pergélisol dans les basses terres de la baie d'Hudson

Prix et études

B.Sc. en agrométéorologie, 1985, Université agricole de Pékin

M.Sc. en agrométéorologie, 1988, Institut de météorologie de Nanjing

doctorat en géophysique, 1999, Université de Pékin en collaboration avec l'Université du New Hampshire

Prix Médaille d'or Logan de la Commission géologique du Canada, 2018

Prix du mérite du secteur des sciences de la Terre, Ressources naturelles Canada, 2012.

Prix d'excellence de la fonction publique, 2009

Prix du mérite ministériel, Ressources naturelles Canada, 2008

Prix du mérite du secteur des sciences de la Terre, Ressources naturelles Canada, 2007

Prix du mérite du secteur des sciences de la Terre, Ressources naturelles Canada, 2006

Prix du mérite du secteur des sciences de la Terre, Ressources naturelles Canada, 2003

Principales publications

O’Neill, H.B., S.L. Smith, C.R. Burn, C. Duchesne, and Y. Zhang. 2023. Widespread permafrost degradation and thaw subsidence in northwest Canada. Journal of Geophysical Research: Earth Surface, 128, e2023JF007262. doi: 10.1029/2023JF007262

Lantz, T. L., Y. Zhang, S.V. Kokelj. 2022. Impacts of ecological succession and climate warming on permafrost aggradation in drained lake basins of the Tuktoyaktuk Coastlands, Northwest Territories, Canada. Permafrost and Periglacial Processes 33(2), 176-192. doi: 10.1002/ppp.2143

Zhang, Y., R. Touzi, W. Feng, G. Hong, T.C. Lantz, and S.V. Kokelj. 2021. Landscape-scale variations in near-surface soil temperature and active-layer thickness: Implications for high-resolution permafrost mapping. Permafrost and Periglacial Processes 32, 627-640. doi: 10.1002/ppp.2104

Zhang Y., R. Touzi, W. Feng, G. Hong, T.C. Lantz, and S.V. Kokelj. 2021. A multisite data set of near-surface soil temperature, active-layer thickness, and soil and vegetation conditions measured in northwestern Canada, 2016-2017. Geomatic Canada Open File 66, 1 .zip file.  doi: 10.4095/329207

Zhang, Y., B. Qian, and G. Hong. 2020. A long-term, 1-km resolution daily meteorological dataset for modelling and mapping permafrost in Canada. Atmosphere, 11, 1363. doi: 10.3390/atmos11121363

Williams, M., Y. Zhang, C. Estop-Aragones, J.P. Fisher, G. Xenakis, D. J. Charman, I.P. Hartley, J.B. Murton, and G.K. Phoenix. 2020. Boreal permafrost thaw amplified by fire disturbance and precipitation increases. Environmental Research Letters, 15, 114050. doi: 10.1088/1748-9326/abbeb8

Burke, B., Y. Zhang, and G. Krinner. 2020. Evaluating permafrost physics in the CMIP6 models and their sensitivity to climate change. The Cryosphere, 14, 3155-3174. doi: 10.5194/tc-14-3155-2020

Zhang, Y; A.B. Sherstiukov, B. Qian, S.V. Kokelj, and T.C. Lantz. 2018. Impacts of snow on soil temperature observed across the circumpolar north. Environmental Research Letters. 13(4), 044012. doi: 10.1088/1748-9326/aab1e7

Treat, C.C., M.E. Marushchak, C. Voigt, Y. Zhang, Z. Tan, Q. Zhuang, et al. 2018. Tundra landscape heterogeneity, not inter-annual variability, controls the decadal regional carbon balance in the Western Russian Arctic, Global Change Biology, 24, 5188-5204. doi: 10.1111/gcb.14421.

Way, R. G., A.G. Lewkowicz, and Y. Zhan. 2018. Characteristics and fate of isolated permafrost patches in coastal Labrador, Canada, The Cryosphere, 12, 2667-2688, doi: 10.5194/tc-12-2667-2018.

Chen, W., O. Zorn, L. White, I. Olthof, Y. Zhang, R. Fraser, and S. Leblanc. 2016. Decoupling between plant productivity and growing season length under a warming climate in Canada's Arctic. American Journal of Climate Change. 05(03), 334-359. doi: 10.4236/ajcc.2016.53026

Ou, C., B. Leblon, Y. Zhang, A. LaRocque, K. Webster, and J. McLaughlin. 2016. Modelling and mapping permafrost at high spatial resolution using Landsat and RADARSAT images in northern Ontario, Canada: Part 1 - Model calibration. International Journal of Remote Sensing, 37(12), 2727-2750. doi: 10.1080/01431161.2016.1157642

Ou, C., A. LaRocque, B. Leblon, Y. Zhang, K. Webster, and J. McLaughlin. 2016. Modelling and mapping permafrost at high spatial resolution using LANDSAT and RADARSAT images in northern Ontario, Canada: Part 2 - Regional mapping, International Journal of Remote Sensing, 37(12), 2751-2779. doi: 10.1080/01431161.2016.1151574

Samsonov, S.V., T.C. Lantz, S.V. Kokelj, and Y. Zhang. 2016. Growth of a young pingo in the Canadian Arctic observed by RADARSAT-2 interferometric satellite radar. The Cryosphere, 10, 799–810. doi: 10.5194/tc-10-799-2016

Zhang, Y., S. A. Wolfe, P.D. Morse, I. Olthof, and R. H. Fraser. 2015. Spatiotemporal impacts of wildfire and climate warming on permafrost across a subarctic region, Canada. Journal of Geophysical Research, Earth Surface, 120. doi:10.1002/2015JF003679

Zhang, Y., I. Olthof, R. Fraser, and S.A. Wolfe. 2014. A new approach to mapping permafrost and change incorporating uncertainties in ground conditions and climate projections. The Cryosphere, 8, 2177-2194. doi: 10.5194/tc-8-2177-2014, www.the-cryosphere.net/8/2177/2014/

Deng, J., C. Li, S. Frolking, Y. Zhang, K. Bäckstrand, and P.M. Crill. 2014. Assessing effects of permafrost thaw on C fluxes based on multiyear modeling across a permafrost thaw gradient at Stordalen, Sweden. Biogeosciences, 11, 4753-4770. doi: doi: 10.5194/bg-11-4753-2014

Chen, W., N. Foy, I. Olthof, Y. Zhang, R. Fraser, R. Latifovic, J. Poitevin, P. Zorn, and D. McLennan. 2014. A biophysically based and objective satellite seasonality observation method for applications over the Arctic. International Journal of Remote Sensing, 35, 6742-6763. doi: 10.1080/01431161.2014.963897

Zhang, Y., W. Chen, and J. Li. 2014. IPR 1.0: an efficient method for calculating solar radiation absorbed by individual plants in sparse heterogeneous woody plant communities. Geoscience Model Development, 7, 1357–1376, 2014. doi: 10.5194/gmd-7-1357-2014

Samsonov, S.V., A.P. Trishchenko, K. Tiampo, P. J. González, Y. Zhang, and J. Fernandez. 2014. Removal of systematic seasonal atmospheric signal from interferometric synthetic aperture radar ground deformation time series. Geophysical Research Letters, 41, 6123-6130. doi: 10.1002/2014GL061307

Zhang, Y., X. Wang, R. Fraser, I. Olthof, W. Chen, D. Mclennan, S. Ponomarenko, and W. Wu. 2013. Modelling and mapping climate change impacts on permafrost at high spatial resolution for an Arctic region with complex terrain. The Cryosphere, 7, 1121–1137. doi: 10.5194/tc-7-1121-2013

Zhang, Y. 2013. Spatio-temporal features of permafrost thaw projected from long-term high resolution modeling for a region in the Hudson Bay Lowlands in Canada. Journal of Geophysical Research-Earth Surface, 118, 1-11, doi: 10.1002/jgrf.20045

Chen, W., P. Zorn, Z. Chen, R. Latifovic, Y. Zhang, J. Li, J. Quirouette, I. Olthof, R. Fraser, D. Mclennan, J. Poitevin, H.M. Stewart, and R. Sharma. 2013. Propagation of errors associated with scaling foliage biomass from field measurements to remote sensing data over a northern Canadian national park. Remote Sensing of Environment, 130, 205-218. doi: 10.1016/j.rse.2012.11.012

Chen, W., N. Foy, I. Olthof, R. Latifovic, Y. Zhang, J. Li, R. Fraser, Z. Chen, D. McLennan, J. Poitevin, P. Zorn, J. Quirouette, and H.M. Stewart. 2013. Evaluating and reducing errors in seasonal profiles of AVHRR vegetation indices over a Canadian northern national park using a cloudiness index. International Journal of Remote Sensing, 34, 4320-4343. doi: 10.1080/01431161.2013.775536

Chen, W., D.E. Russell, A. Gunn, B. Croft, W.R. Chen, R. Fernandes, H. Zhao, J. Li, Y. Zhang, K. Koehler, I. Olthof, R.H. Fraser, S.G. Leblanc, G.R. Henry, R.G. White, and G.L. Finstad. 2013. Monitoring habitat condition changes during winter and pre-calving migration for Bathurst Caribou in northern Canada. Biodiversity, 14(1), 36-44 10.1080/14888386.2012.705110

Zhang, Y., J. Li, X. Wang, W. Chen, W. Sladen, L. Dyke, L. Dredge, J. Poitevin, D. McLennan, H. Stewart, S. Kowalchuk, W. Wu, G.P. Kershaw, and R.K. Brook. 2012. Modeling and mapping permafrost at the landscape scale for a Hudson Bay Lowland region in Canada. Canadian Journal of Earth Sciences, 49, 925-937. doi: 10.1139/E2012-031

Zhang, Y., T. Sachs, C. Li, and J. Boike. 2012. Upscaling methane fluxes from closed chambers to eddy covariance based on a permafrost biogeochemistry integrated model. Global Change Biology, 18, 1428-1440. doi: 10.1111/j.1365-2486.2011.02587.x

Chen, W., J. Li, Y. Zhang, F. Zhou, K. Koehler, S. Leblanc, R. Fraser, I. Olthof, Y. Zhang, and J. Wang. 2009. Relating biomass and leaf area index to non-destructive measurements for monitoring changes in arctic vegetation. Arctic, 62, 281-294. doi: 10.14430/arctic148

Chen, W., D. Blain, J. Li, R. Fraser, Y. Zhang, S. Leblanc, K. Keohler, I. Olthof, J. Wang, and M. McGovern. 2009. Estimating carbon release caused by land use changes over Canada’s north during 1985-90 and 1990-2000 using satellite earth observation. Journal of Geophysical Research (Biogeosciences), 114, G01017. doi: 10.1029/2007JG000631

Chen, W., D. Blain, J. Li, R. K. Keohler, Fraser, Y. Zhang, S. Leblanc, I. Olthof, J. Wang, and M. McGovern. 2009. Biomass measurements and relationships with Landsat-7/ETM+ and JERS-1/SAR data over Canada’s western sub-arctic and low arctic. International Journal of Remote Sensing, 30(9), 2355-2376. doi: 10.1080/01431160802549401

Zhang, Y., W. Chen, and D.W. Riseborough. 2008. Disequilibrium response of permafrost thaw to climate warming in Canada over 1850-2100. Geophysical Research Letters, 35, L02502. doi: 10.1029/2007GL032117

Zhang, Y., W. Chen, and D.W. Riseborough. 2008. Transient projections of permafrost distribution in Canada during the 21st century under scenarios of climate change. Global and Planetary Change, 60, 443-456. doi: 10.1016/j.gloplacha.2007.05.003

Hossain, M.F., Y. Zhang, W. Chen, J. Wang, and G. Pavlic. 2007. Soil organic carbon content in northern Canada: A database of field measurements and its analysis. Canadian Journal of Soil Science, 87(3), 259-268. doi: 10.4141/S06-029

Zhang, Y., W. Chen, and D.W. Riseborough. 2006. Temporal and spatial changes of permafrost in Canada since the end of the Little Ice Age. Journal of Geophysical Research (Atmospheres), 111, D22103. doi: 10.1029/2006JD007284

Zhang, Y., W. Chen, S.L. Smith, D.W. Riseborough, and J. Cihlar. 2005. Soil temperature in Canada during the 20th century: complex responses to atmospheric climate change. Journal of Geophysical Research (Atmospheres), 110, D03112. doi: 10.1029/2004JD004910

Zhang, Y., W. Chen, and J. Cihlar. 2003. A process-based model for quantifying the impact of climate change on permafrost thermal regimes. Journal of Geophysical Research (Atmospheres), 108(D22), 4695. doi: 10.1029/2002JD003354

Chen, W., Y. Zhang, J. Cihlar, S.L. Smith, and D.W. Riseborough. 2003. Changes in soil temperature and active-layer thickness during the 20th century in a region in western Canada. Journal of Geophysical Research (Atmospheres), 108(D22), 4696. doi: 10.1029/2002JD003355

Zhang, Y., C. Li., C.C. Trettin, H. Li, and G. Sun. 2002. An integrated model of soil, hydrology and vegetation for carbon dynamics in wetland ecosystems. Global Biogeochemical Cycles, 16(4), 1061.  doi: 10.1029/2001GB001838

Zhang, Y., C. Li, X. Zhou, and B. Moore. 2002. A simulation model linking crop growth and soil biogeochemistry for sustainable agriculture. Ecological Modelling, 151, 75-108. doi: 10.1016/S0304-3800(01)00527-0