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.


Submissions from 2007


Sensitivity of Pan-Arctic Terrestrial Net Primary Productivity Simulations to Daily Surface Meterology From NCEP-NCAR and ERA-40 Reanalyses, Ke Zhang, John S. Kimball, Maosheng Zhao, Walter C. Oechel, John Cassano, and Steven W. Running

Submissions from 2006

Impacts of climate change on natural forest productivity - evidence since the middle of the 20th century, Céline Boisvenue and Steven W. Running


Reconciling Carbon-cycle Concepts, Terminology, and Methods, F. S. Chapin III, G. M. Woodwell, J. Randerson, E. B. Rastetter, G. M. Lovett, Dennis Baldocchi, D. A. Clark, M. E. Harmon, D. S. Schimel, R. Valentini, C. Wirth, J. D. Aber, J. J. Cole, M. L. Goulden, J. W. Harden, M. Heimann, Robert W. Howarth, P. A. Matson, A. D. McGuire, Jerry M. Melillo, H. A. Mooney, J. C. Neff, R. A. Houghton, M. L. Pace, M. G. Ryan, Steven W. Running, Osvaldo E. Sala, W. H. Schlesinger, and E. D. Schulze


MODIS land cover and LAI Collection 4 product quality across nine sites in the western hemisphere, Warren B. Cohen, Thomas K. Maiersperger, David Turner, William D. Ritts, Dirk Pflugmacher, Robert Kennedy, Al A. Kirschbaum, Steven W. Running, Marcos H. Costa, and Stith T. Gower

Importance of recent shifts in soil thermal dynamics on growing season length, productivity, and carbon sequestration in terrestrial high-latitude ecosystems, E. Euskirchen, A. D. McGuire, David W. Kicklighter, Q. Zhuang, J. Clein, R. Dargaville, D. G. Dye, John S. Kimball, Kyle C. McDonald, Jerry M. Melillo, V. E. Romanovsky, and N. V. Smith


Evaluation of the SeaWinds scatterometer for regional monitoring of vegetation phenology, S. Frolking, Tom Milliman, K. C. McDonald, John S. Kimball, Maosheng Zhao, and Mark Fahnestock

FireWxNet: A Multi-Tiered Portable Wireless System for Monitoring Weather Conditions in Wildland Fire Environments, Carl Hartung, Richard Han, Carl Andrew Seielstad, and Saxon Lorien Holbrook

Evaluation of remote sensing based terrestrial productivity from MODIS using regional tower eddy flux network observations, Faith Ann Heinsch, Maosheng Zhao, Steven W. Running, John S. Kimball, Ramakrishna R. Nemani, Kenneth J. Davis, Paul V. Bolstad, Bruce D. Cook, Ankur R. Desai, Daniel M. Ricciuto, Beverly E. Law, Walter C. Oechel, Hyo Jung Kwon, Hongyan Luo, Steve Wofsy, Allison L. Dunn, William Munger, Dennis Baldocchi, Liukang Xu, D. Y. Hollinger, Andrew D. Richardson, Paul C. Stoy, Mario B.S. Siqueira, Russell Monson, S. P. Burns, and Lawrence B. Flanagan

Simulating effects of fire disturbance and climate change on boreal forest productivity and evapotranspiration, Sinkyu Kang, John S. Kimball, and Steven W. Running


Spring Thaw and Its Effect on Terrestrial Vegetation Productivity in the Western Arctic Observed from Satellite Microwave and Optical Remote Sensing, John S. Kimball, K. C. McDonald, and M. Zhao

Satellite Remote Sensing Of Terrestrial Net Primary Production For The Pan-arctic Basin And Alaska, John S. Kimball, M. Zhao, K. C. McDonald, and Steven W. Running


Estimation of Incident Photosynthetically Active Radiation From Moderate Resolution Imaging Spectrometer Data, Shunlin Liang, Tao Zheng, Ronggao Liu, Hongliang Fang, Si-Chee Tsay, and Steven W. Running

Where Are the Hottest Spots on Earth?, David J. Mildrexler, Maosheng Zhao, and Steven W. Running

Monitoring Global Vegetation Using Moderate-Resolution Satellites, J. T. Morisette, Faith Ann Heinsch, and Steven W. Running

Applying improved estimates of MODIS productivity to characterize grassland vegetation dynamics, Matthew Clark Reeves, Maosheng Zhao, and Steven W. Running

Is Global Warming Causing More, Larger Wildfires?, Steven W. Running

Evaluation of MODIS NPP and GPP products across multiple biomes, David Turner, William D. Ritts, Warren B. Cohen, Stith T. Gower, Steven W. Running, Maosheng Zhao, Marcos H. Costa, Al A. Kirschbaum, Jay M. Ham, Scott R. Saleska, and Douglas E. Ahl

Assessing interannual variation in MODIS-based estimates of gross primary production, David Turner, William D. Ritts, Maosheng Zhao, Shirley A. Kurc, Allison L. Dunn, Steve Wofsy, Eric E. Small, and Steven W. Running


3-PG Productivity Modeling of Regenerating Amazon Forests: Climate Sensitivity and Comparison with MODIS-Derived NPP, Joseph D. White, Neal A. Scott, Adam I. Hirsch, and Steven W. Running


Sensitivity of Moderate Resolution Imaging Spectroradiometer (MODIS) Terrestrial Primary Production to the Accuracy of Meteorological Reanalyses, Maosheng Zhao, Steven W. Running, and Ramakrishna R. Nemani

Submissions from 2005

Assessing climate change effect on mountain ecosystems using integrated models: A case study, Daniel B. Fagre, Steven W. Running, Robert E. Keane, and David L. Peterson

A flexible, integrated system for generating meteorological surfaces derived from point sources across multiple geographic scales, William M. Jolly, Jonathan M. Graham, Andrew Michaelis, Ramakrishna R. Nemani, and Steven W. Running

A generalized, bioclimatic index to predict foliar phenology in response to climate, William M. Jolly, Ramakrishna R. Nemani, and Steven W. Running

Improving continuity of MODIS terrestrial photosynthesis products using an interpolation scheme for cloudy pixels, S. Kang, Steven W. Running, M. Zhao, John S. Kimball, and Joseph M. Glassy

Decreasing photosynthesis at different spatial scales during the late growing season on a boreal cutover, Marie-Claude Martel, Hank A. Margolis, Carole Coursolle, Francine J. Bigras, Faith Ann Heinsch, and Steven W. Running

Estimation of Surface Freeze-Thaw States Using Microwave Sensors, K. C. McDonald and John S. Kimball


Aggregate Measures of Ecosystem Services: Can We Take the Pulse of Nature?, Laura A. Meyerson, Jill Baron, Jerry M. Melillo, Robert J. Naiman, Robin I. O'Malley, Gordon Orians, Margaret A. Palmer, Alexander S. P. Pfaff, Steven W. Running, and Osvaldo E. Sala

Climate variability, vegetation productivity and people at risk, Cristina Milesi, Hirofumi Hashimoto, Steven W. Running, and Ramakrishna R. Nemani

Mapping and Modeling the Biogeochemical Cycling of Turf Grasses in the United States, Cristina Milesi, Steven W. Running, Christopher D. Elvidge, John B. Dietz, Benjamin T. Tuttle, and Ramakrishna R. Nemani

Usefulness and limits of MODIS GPP for estimating wheat yield, Matthew Clark Reeves, M. Zhao, and Steven W. Running


Global biomass variation and its geodynamic effects, 1982-1998, M. Rodell, B. F. Chao, A. Y. Au, John S. Kimball, and K. C. McDonald

Satellite-Based Analysis of Ecological Controls For Land-Surface Evaporation Resistance, Steven W. Running and John S. Kimball

Site-level evaluation of satellite-based global terrestrial gross primary production and net primary production monitoring, David Turner, William D. Ritts, Warren B. Cohen, Thomas K. Maiersperger, Stith T. Gower, Al A. Kirschbaum, Steven W. Running, Maosheng Zhao, Steve Wofsy, Allison L. Dunn, Beverly E. Law, John L. Campbell, Walter C. Oechel, Hyo Jung Kwon, Tilden Meyers, Eric E. Small, Shirley A. Kurc, and J. A. Gamon

Improvements of the MODIS terrestrial gross and net primary production global data set, Maosheng Zhao, Faith Ann Heinsch, Ramakrishna R. Nemani, and Steven W. Running

Submissions from 2004

The Hydrosphere State (HYDROS) mission concept: An Earth System Pathfinder for global mapping of soil moisture and land freeze/thaw, Dara Entekhabi, Eni G. Njoku, Paul Houser, Michael Spencer, Terence Doiron, Yunjin Kim, Joel Smith, Ralph Girard, Stephane Belair, Wade Crow, Thomas J. Jackson, Yann H. Kerr, John S. Kimball, Randy Koster, Kyle C. McDonald, Peggy E. O'Neill, Terry Pultz, Steven W. Running, Jiancheng Shi, Eric Wood, and Jakob van Zyl

Remote sensing in BOREAS: Lessons learned, J. A. Gamon, K. F. Huemmrich, D. R. Peddle, J. Chen, D. Fuentes, F. G. Hall, John S. Kimball, S. Goetz, J. Gu, K. C. McDonald, J. R. Miller, M. Moghaddam, A. F. Rahman, J.-L. Roujean, E. A. Smith, C. L. Walthall, P. Zarco-Tejada, B. Hu, R. Fernandes, and J. Cihlar


Oak forest carbon and water simulations: model intercomparisons and evaluations against independent data, P. J. Hanson, J. S. Amthor, S. D. Wullschleger, K. B. Wilson, R. F. Grant, A. Hartley, D. Hui, E. R. Hunt Jr., D. W. Johnson, John S. Kimball, A. W. King, Y. Luo, S. G. McNulty, G. Sun, Peter Edmond Thornton, S. Wang, M. Williams, Dennis Baldocchi, and R. M. Cushman


El Niño-Southern Oscillation-Induced Variability in Terrestrial Carbon Cycling, Hirofumi Hashimoto, Ramakrishna R. Nemani, Michael A. White, William M. Jolly, Steve C. Piper, Charles D. Keeling, Ranga B. Myneni, and Steven W. Running

Enhancement of understory productivity by asynchronous phenology with overstory competitors in a temperate deciduous forest, William M. Jolly, Ramakrishna R. Nemani, and Steven W. Running

The effects of spatial aggregation of complex topography on hydro-ecological process simulations within a rugged forest landscape: Development and application of a satellite-based topoclimatic model., S. Kang, D. Lee, and John S. Kimball

Radar remote sensing of the spring thaw transition across a boreal landscape, John S. Kimball, K. C. McDonald, S. Frolking, and Steven W. Running

Satellite radar remote sensing of seasonal growing seasons for boreal and subalpine evergreen forests, John S. Kimball, K. C. McDonald, Steven W. Running, and S. Frolking


Satellite observations of annual variability in terrestrial carbon cycles and seasonal growing seasons at high northern latitudes, John S. Kimball, Maosheng Zhao, Kyle C. McDonald, Faith Ann Heinsch, and Steven W. Running


VEMAP Phase 2 Bioclimatic Database. I. Gridded Historical (20th century) Climate for Modeling Ecosystem Dynamics Across the Conterminous USA, T. G. F. Kittel, N. A. Rosenbloom, J. A. Royle, C. Daly, W. P. Gibson, H. H. Fisher, P. Thornton, D. N. Yates, C. Kaufman, R. McKeown, D. Bachelet, D. S. Schimel, Steven W. Running, and VEMAP2 Participants


Variability in springtime thaw in the terrestrial high latitudes: Monitoring a major control on the biospheric assimilation of atmospheric CO2 with spaceborne microwave remote sensing, Kyle C. McDonald, John S. Kimball, Eni G. Njoku, Reiner Zimmermann, and Maosheng Zhao


Spaceborne microwave remote sensing of seasonal freeze-thaw processes in the terrestrial high latitudes: Relationships with land-atmosphere CO2 exchange, Kyle C. McDonald, John S. Kimball, Maosheng Zhao, Eni G. Njoku, Reiner Zimmermann, and Steven W. Running


Land cover disturbances and feedbacks to the climate system in Canada and Alaska, A. D. McGuire, M. Apps, F. S. Chapin III, R. Dargaville, M. D. Flannigan, Eric Kasischke, David W. Kicklighter, John S. Kimball, W. Kurz, D. J. McRae, Kyle C. McDonald, Jerry M. Melillo, Ranga B. Myneni, B. J. Stocks, D. L. Verbyla, and Q. Zhuang

A Patchy Hierarchy Approach to Modeling Surface and Subsurface Hydrology in Complex Flood-plain Environments, Geoffrey C. Poole, Jack A. Stanford, Steven W. Running, C. A. Frissell, William W. Woessner, and Bonnie Kathleen Ellis

Global Land Data Sets for Next-Generation Biospheric Monitoring, Steven W. Running

A Continuous Satellite-Derived Measure of Global Terrestrial Primary Production, Steven W. Running, Ramakrishna R. Nemani, Faith Ann Heinsch, Maosheng Zhao, Matthew Clark Reeves, and Hirofumi Hashimoto