The Numerical Terradynamic Simulation Group (NTSG) is a research center in the University of Montana's W.A. Franke College of Forestry & Conservation pioneering new approaches for landscape ecological and hydrological studies. A major focus of our research is to understand how vegetation responds to climate variability and influences the water, carbon and energy cycles. NTSG conducts research over a broad range of spatial scales, emphasizing emerging technologies in satellite remote sensing, computational modeling and biophysical theory. We are a leader in the development and application of satellite remote sensing for global environmental assessment and monitoring. NTSG is a NASA Earth Science Information Partner (ESIP), developer and repository for a variety of global land data products from satellite Earth missions, including MODIS (MOD16/17) vegetation productivity and evapotranspiration, AMSR land parameters, and SMAP (L4C) carbon flux products.

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Submissions from 2014

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Inter-Calibration of Satellite Passive Microwave Land Observations from AMSR-E and AMSR2 Using Overlapping FY3B-MWRI Sensor Measurements, Jinyang Du, John S. Kimball, Jiancheng Shi, Lucas Alan Jones, Shengli Wu, Ruijing Sun, and Hu Yang

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Terrestrial hydrological controls on land surface phenology of African savannas and woodlands, Kaiyu Guan, Eric F. Wood, David Medvigy, John S. Kimball, Ming Pan, Kelly K. Caylor, Justin Sheffield, Xiangtao Xu, and Matthew O. Jones

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Exposure of U.S. National Parks to land use and climate change 1900-2100, Andrew J. Hansen, Cory Davis, Jessica Haas, David M. Theobald, John E. Gross, William B. Monahan, Tom Olliff, and Steven W. Running

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Retrievals of All-Weather Daily Air Temperature Using MODIS and AMSR-E Data, Keunchang Jang, Sinkyu Kang, John S. Kimball, and Suk Young Hong

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Asynchronous Amazon forest canopy phenology indicates adaptation to both water and light availability, Matthew O. Jones, John S. Kimball, and Ramakrishna R. Nemani

Comparing land surface phenology derived from satellite and GPS network microwave remote sensing, Matthew O. Jones, John S. Kimball, Eric E. Small, and Kristine M. Larson

Effects of spatial and temporal climatic variability on terrestrial carbon and water fluxes in the Pacific Northwest, USA, Sinkyu Kang, Steven W. Running, John S. Kimball, Daniel B. Fagre, Andrew Michaelis, David L. Peterson, Jessica E. Halofsky, and Sukyoung Hong

Vegetation Phenology, John S. Kimball

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New Spring Climate Indicator (SCI) Metrics from Satellite Optical & Microwave ESDR Fusion, Y. Kim, John S. Kimball, Kamel Didan, and Geoffrey M. Henebry

Response of vegetation growth and productivity to spring climate indicators in the conterminous United States derived from satellite remote sensing data fusion, Youngwook Kim, John S. Kimball, Kamel Didan, and Geoffrey M. Henebry

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Improvements and Extension to a Global Earth System Data Record of Daily Landscape Freeze-Thaw Status Determined from Satellite Microwave Remote Sensing, Youngwook Kim, John S. Kimball, Jinyang Du, and Joseph M. Glassy

Attribution of divergent northern vegetation growth responses to lengthening non-frozen seasons using satellite optical-NIR and microwave remote sensing, Youngwook Kim, John S. Kimball, K. Zhang, Kamel Didan, I. Velicogna, and Kyle C. McDonald

Wildland fire emissions, carbon, and climate: Seeing the forest and the trees – A cross-scale assessment of wildfire and carbon dynamics in fire-prone, forested ecosystems, Rachel Andrea Loehman, Elizabeth D. Reinhardt, and Karin Lynn Riley

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Improving ecosystem productivity modeling through spatially explicit estimation of optimal light use efficiency, Nima Madani, John S. Kimball, David L.R. Affleck, Jens Kattge, Jon Graham, Peter M. van Bodegom, Peter B. Reich, and Steven W. Running

Remote monitoring of soil moisture using passive microwave-based techniques-Theoretical basis and overview of selected algorithms for AMSR-E, I. E. Mladenova, T. J. Jackson, Eni G. Njoku, R. Bindlish, S. Chan, M. H. Cosh, T. R.H. Holmes, Richard de Jeu, Lucas A. Jones, John S. Kimball, S. Paloscia, and E. Santi

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National Climate Indicators System Report, National Climate Assessment and Development Advisory Committee

Creating a topoclimatic daily air temperature dataset for the conterminous United States using homogenized station data and remotely sensed land skin temperature, Jared Wesley Oyler, Ashley P. Ballantyne, Kelsey Jencso, Michael D. Sweet, and Steven W. Running

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Modeling and Monitoring Terrestrial Primary Production in a Changing Global Environment: Toward a Multiscale Synthesis of Observation and Simulation, Shufen Pan, Hanqin Tian, Shree R. S. Dangal, Zhiyun Ouyang, Bo Tao, Wei Ren, Chaoqun Lu, and Steven W. Running

Multisensor Microwave Sensitivity to Freeze/Thaw Dynamics Across a Complex Boreal Landscape, Erika Podest, Kyle C. McDonald, and John S. Kimball

Contribution of semi-arid ecosystems to interannual variability of the global carbon cycle, Benjamin Poulter, David Frank, Philippe Ciais, Ranga B. Myneni, Niels Andela, Jian Bi, Gregoire Broquet, Joseph G. Canadell, Frédéric Chevallier, Yi Y. Liu, Steven W. Running, Stephen Sitch, and Guido R. van der Werf

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Estimating climate change effects on net primary production of rangelands in the United States, Matthew Clark Reeves, Adam LaSalle Moreno, Karen E. Bagne, and Steven W. Running

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A regional look at HANPP: human consumption is increasing, NPP is not, Steven W. Running

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Agricultural Conversion Without External Water and Nutrient Inputs Reduces Terrestrial Vegetation Productivity, William Kolby Smith, Cory C. Cleveland, Sasha C. Reed, and Steven W. Running

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A satellite data driven biophysical modeling approach for estimating northern peatland and tundra CO2 and CH4 fluxes, J. D. Watts, John S. Kimball, F. J. W. Parmentier, T. Sachs, J. Rinne, D. Zona, Walt Oechel, T. Tagesson, M. Jackowicz-Korczynski, and M. Aurela

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Surface water inundation in the boreal- Arctic: potential impacts on regional methane emissions, Jennifer D. Watts, John S. Kimball, Annett Bartsch, and Kyle C. McDonald

Evaluation of NLDAS-2 evapotranspiration against tower flux site observations, Youlong Xia, Michael T. Hobbins, Qiaozhen Mu, and Michael B. Ek

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Bayesian multimodel estimation of global terrestrial latent heat flux from eddy covariance, meteorological, and satellite observations, Yunjun Yao, Shunlin Liang, Xianglan Li, Yang Hong, Joshua B. Fisher, Nannan Zhang, Jiquan Chen, Jie Cheng, Shaohua Zhao, Xiaotong Zhang, Bo Jiang, Liang Sun, Kun Jia, Kaicun Wang, Yang Chen, Qiaozhen Mu, and Fei Feng

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Spring hydrology determines summer net carbon uptake in northern ecosystems, Yonghong Yi, John S. Kimball, and Rolf H. Reichle

Submissions from 2013

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The global NPP dependence on ENSO: La Niña and the extraordinary year of 2011, A. Bastos, Steven W. Running, Célia M. Gouveia, and Ricardo M. Trigo

Global evaluation of MTCLIM and related algorithms for forcing of ecological and hydrological models, Theodore J. Bohn, Ben Livneh, Jared Wesley Oyler, Steven W. Running, Bart Nijssen, and Dennis P. Lettenmaier

Patterns of new versus recycled primary production in the terrestrial biosphere, Cory C. Cleveland, Benjamin Z. Houlton, W. Kolby Smith, Alison R. Marklein, Sasha C. Reed, William J. Parton, Stephen J. Del Grosso, and Steven W. Running

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Bioenergy: how much can we expect for 2050?, Helmut Haberl, Karl-Heinz Erb, Fridolin Krausmann, Steven W. Running, Timothy D. Searchinger, and W. Kolby Smith

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Monitoring daily evapotranspiration in Northeast Asia using MODIS and a regional Land Data Assimilation System, Keunchang Jang, Sinkyu Kang, Yoon-Jin Lim, Seungtaek Jeong, Joon Kim, John S. Kimball, and Suk Young Hong

Satellite microwave detection of boreal forest recovery from the extreme 2004 wildfires in Alaska and Canada, Matthew O. Jones, John S. Kimball, and Lucas A. Jones

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The Freeze‐Thaw Earth System Data Record (FT‐ESDR), John S. Kimball

Camouflage mismatch in seasonal coat color due to decreased snow duration, L. Scott Mills, Marketa Zimova, Jared Wesley Oyler, Steven W. Running, John Abatzoglou, and Paul Lukacs

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A Remotely Sensed Global Terrestrial Drought Severity Index, Qiaozhen Mu, Maosheng Zhao, John S. Kimball, Nate McDowell, and Steven W. Running

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MODIS Global Terrestrial Evapotranspiration (ET) Product (NASA MOD16A2/A3) Collection 5. NASA Headquarters, Qiaozhen Mu, Maosheng Zhao, and Steven W. Running

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Future humidity trends over the western United States in the CMIP5 global climate models and variable infiltration capacity hydrological modeling system, D. W. Pierce, A. L. Westerling, and Jared Wesley Oyler

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The relationship of large fire occurrence with drought and fire danger indices in the western USA, 1984–2008: the role of temporal scale, Karin Lynn Riley, John Abatzoglou, Isaac C. Grenfell, Anna E. Klene, and Faith Ann Heinsch

Frequency-magnitude distribution of debris flows compiled from global data, and comparison with post-fire debris flows in the western U.S., Karin Lynn Riley, Rebecca Bendick, Kevin Hyde, and Emmanuel J. Gabet

Assessment of the MODIS global evapotranspiration algorithm using eddy covariance measurements and hydrological modelling in the Rio Grande basin, A. L. Ruhoff, A. R. Paz, L. E.O.C. Aragao, Qiaozhen Mu, Y. Malhi, W. Collischonn, H. R. Rocha, and Steven W. Running

Approaching the Limits, Steven W. Running

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Sensitivity of inferred climate model skill to evaluation decisions: a case study using CMIP5 evapotranspiration, Christopher R. Schwalm, Deborah N. Huntinzger, Anna M. Michalak, Joshua B. Fisher, John S. Kimball, Brigitte Mueller, Ke Zhang, and Yongqiang Zhang

Satellite-derived estimates of forest leaf area index in southwest Western Australia are not tightly coupled to interannual variations in rainfall: implications for groundwater decline in a drying climate, Keith R. Smettem, R. H. Waring, John N. Callow, Melissa Wilson, and Qiaozhen Mu

Steelhead vulnerability to climate change in the Pacific Northwest, Alisa A. Wade, Timothy J. Beechie, Erica Fleishman, Nathan J. Mantua, Huan Wu, John S. Kimball, David M. Stoms, and Jack A. Stanford

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Recent climate and fire disturbance impacts on boreal and arctic ecosystem productivity estimated using a satellite-based terrestrial carbon flux model, Yonghong Yi, John S. Kimball, Lucas A. Jones, Rolf H. Reichle, Ramakrishna R. Nemani, and Hank A. Margolis

Submissions from 2012

Restoring Salmon Habitat For A Changing Climate, T. Beechie, H. Imaki, J. Greene, A. Wade, H. Wu, G. Pess, P. Roni, John S. Kimball, Jack A. Stanford, P. Kiffney, and Nate Mantua

Satellite microwave remote sensing for environmental modeling of mosquito population dynamics, Ting-Wu Chuang, Geoffrey M. Henebry, John S. Kimball, Denise L. VanRoekel-Patton, Michael B. Hildreth, and Michael C. Wimberly

Application of QuickSCAT Backscatter to SMAP Validation Planning: Freeze/Thaw State Over ALECTRA Sites in Alaska From 2000 to 2007, Andreas Colliander, Kyle C. McDonald, Reiner Zimmermann, Ronny Schroeder, John S. Kimball, and Eni G. Njoku