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Fundamental and Computational Sciences Directorate

Staff information


Tristram West

Terrestrial Processes & Adaptation

Research Interests

  • Effects of land management on biogeochemical cycling in terrestrial ecosystems
  • Quantitative modeling of the impacts of carbon sequestration strategies and other climate change mitigation options on net greenhouse gas emissions to the atmosphere
  • Use of remote sensing and geographic information systems to quantify soil attributes and biogeochemical cycling
  • Integrated assessment of climate change impacts and mitigation
  • Environmental effects of policies intended to reduce greenhouse gas emissions

Education and Credentials

  • Ph.D., Agronomy, Ohio State University, 1999. Concentrations: Landscape Ecology and Ecological Modeling
  • M.S., Natural Resources, Ohio State University, 1996. Concentrations: Ecosystem Rehabilitation and Ecological Modeling
  • B.S., Agriculture, University of Kentucky, 1994. Curriculum: Natural Resources Conservation and Management

Affiliations and Professional Service

  • American Geophysical Union
  • American Society of Agronomy
  • American Society for Photogrammetry and Remote Sensing
  • Ecological Society of America
  • Soil Science Society of America

Awards and Recognitions

  • Elected member to the North American Carbon Program, Mid-Continent Intensive Campaign Task Force, 2005-2008.
  • Associate Editor, Soil Science Society of America Journal, 2007 - 2013.
  • USDA Croplands/Grazing Lands Working Group for quantifying greenhouse gas emissions from forest and agricultural sectors, 2011- present.
  • NASA Terrestrial Ecology Working Group, 2010 - present.
  • Team member of the Bio-Based Energy Analysis Group, University of Tennessee
  • Oak Ridge National Laboratory, Environmental Sciences Division, Stanley I. Auerbach Award for Excellence in Environmental Science, 2009
  • Soil Science Society of America, Best Division S-6 Paper, 1st Place, 2008
  • Soil Science Society of America, Best Division S-6 Paper, Honorable Mention, 2003
  • AAAS Environmental Fellowship, Congressional Science and Engineering Fellowship, 2002
  • US Department of Defense Fellowship, 1996-1999
  • Ohio State, Mapping and GIS Laboratory Fellowship, 1996-1999

PNNL Publications


  • Chen JM, JW Fung, G Mo, F Deng, and TO West. 2015. "Atmospheric inversion of the surface carbon flux with consideration of the spatial distributions of US crop production and consumption." Biogeosciences 12(2):323-343.  doi:10.5194/bg-12-323-2015
  • King AW, R Andres, KJ Davis, M Hafer, DJ Hayes, DN Huntzinger, B de Jong, W Kurz, AD McGuire, R Vargas, Y Wei, TO West, and CW Woodall. 2015. "North America's net terrestrial carbon exchange with the atmosphere 1990-2009." Biogeosciences 12(2):399-414.  doi:10.5194/bg-12-399-2015
  • Kraucunas IP, LE Clarke, JA Dirks, JE Hathaway, MI Hejazi, KA Hibbard, M Huang, C Jin, MCW Kintner-Meyer, K Kleese van Dam, LYR Leung, H Li, RH Moss, MJ Peterson, JS Rice, MJ Scott, AM Thomson, N Voisin, and TO West. 2015. "Investigating the Nexus of Climate, Energy, Water, and Land at Decision-Relevant Scales: The Platform for Regional Integrated Modeling and Analysis (PRIMA)." Climatic Change 129(3-4):573-588.  doi:10.1007/s10584-014-1064-9
  • Ogle S, KJ Davis, T Lauvaux, AE Schuh, D Cooley, TO West, L Heath, N Miles, SJ Richardson, FJ Breidt, J Smith, JL McCarty, KR Gurney, PP Tans, and S Denning. 2015. "An Approach for Verifying Biogenic Greenhouse Gas Emissions Inventories with Atmospheric CO2 Concentration Data." Environmental Research Letters 10(3):Article No. 034012.  doi:10.1088/1748-9326/10/3/034012
  • Zhang X, RC Izaurralde, DH Manowitz, R Sahajpal, TO West, AM Thomson, M Xu, K Zhao, SD LeDuc, and JR Williams. 2015. "Regional scale cropland carbon budgets: evaluating a geospatial agricultural modeling system using inventory data." Environmental Modelling & Software 63:199-216.  doi:10.1016/j.envsoft.2014.10.005


  • Li Z, S Liu, Z Tan, N Bliss, CJ Young, TO West, and S Ogle. 2014. "Comparing cropland net primary production estimates from inventory, a satellite-based model, and a process-based model in the Midwest of the United States." Ecological Modelling (277):1-12.  doi:10.1016/j.ecolmodel.2014.01.012
  • West TO, YLB Le Page, M Huang, J Wolf, and AM Thomson. 2014. "Downscaling Global Land Cover Projections from an Integrated Assessment Model for Use in Regional Analyses: Results and Evaluation for the US from 2005 to 2095." Environmental Research Letters 9(6):Article No. 064004.  doi:10.1088/1748-9326/9/6/064004
  • Zeng N, F Zhao, G Collatz, E Kalnay, RJ Salawitch, TO West, and L Guanter. 2014. "Agricultural green revolution as a driver of increasing atmospheric CO2 seasonal amplitude." Nature 515(7527):393-397.  doi:10.1038/nature13893
  • Zhang X, R Sahajpal, D Manowitz, K Zhao, SD LeDuc, M Xu, W Xiong, A Zhang, RC Izaurralde, AM Thomson, TO West, and WM Post. 2014. "Multi-scale geospatial agroecosystem modeling: a case study on the influence of soil data resolution on carbon budget estimates." Science of the Total Environment 479:138-50.  doi:10.1016/j.scitotenv.2014.01.099


  • Bandaru V, TO West, DM Ricciuto, and RC Izaurralde. 2013. "Estimating crop net primary production using inventory data and MODIS-derived parameters." ISPRS Journal of Photogrammetry and Remote Sensing 80:61-71.  doi:10.1016/j.isprsjprs.2013.03.005
  • Kang S, WM Post, D Wang, JA Nichols, V Bandaru, and TO West. 2013. "Hierarchical marginal land assessment for land use planning." Land Use Policy 30(1):106-113.  doi:10.1016/j.landusepol.2012.03.002
  • Schuh AE, T Lauvaux, TO West, A Denning, KJ Davis, N Miles, SJ Richardson, M Uliasz, E Lokupitiya, D Cooley, A Andrews, and S Ogle. 2013. "Evaluating atmospheric CO2 inversions at multiple scales over a highly-inventoried agricultural landscape." Global Change Biology 19(5):1424-1439.  doi:10.1111/gcb.12141


  • Hayes DJ, DP Turner, G Stinson, AD McGuire, Y Wei, TO West, L Heath, B deJong, B McConkey, RA Birdsey, W Kurz, A Jacobson, DN Huntzinger, Y Pan, WM Post, and RB Cook. 2012. "Reconciling estimates of the contemporary North American carbon balance among terrestrial biosphere models, atmospheric inversions and a new approach for estimating net ecosystem exchange from inventory-based data." Global Change Biology 18(4):1282-1299.  doi:10.1111/j.1365-2486.2011.02627.x
  • Huntzinger D, WM Post, Y Wei, AM Michalak, TO West, A Jacobson, I Baker, JM Chen, KJ Davis, DJ Hayes, FM Hoffman, AK Jain, S Liu, AD McGuire, RP Neilson, C Potter, B Poulter, D Price, BM Raczka, H Tian, P Thornton, E Tomelleri, N Viovy, J Xiao, W Yuan, N Zeng, M Zhao, and RB Cook. 2012. "North American Carbon Project (NACP) Regional Interim Synthesis: Terrestrial Biospheric Model Intercomparison." Ecological Modelling 232:144-157.  doi:10.1016/j.ecolmodel.2012.02.004
  • King AW, DJ Hayes, DN Huntzinger, TO West, and WM Post. 2012. "North America carbon dioxide sources and sinks: magnitude, attribution, and uncertainty." Frontiers in Ecology and the Environment 10(10):512-519.  doi:10.1890/120066
  • Miles N, SJ Richardson, KJ Davis, T Lauvaux, A Andrews, TO West, V Bandaru, and ER Crosson. 2012. "Large Amplitude Spatial and Temporal Gradients in Atmospheric Boundary Layer CO2 Mole Fractions Detected With a Tower-Based Network in the U.S. Upper Midwest." Journal of Geophysical Research. Biogeosciences 117:Article No. G01019.  doi:10.1029/2011JG001781
  • Post WM, RC Izaurralde, TO West, MA Liebig, and AW King. 2012. "Management Opportunities for Enhancing Terrestrial Carbon Dioxide Sinks." Frontiers in Ecology and the Environment 10(10):554-561.  doi:10.1890/120065
  • Toliver DK, JA Larson, RK Roberts, BC English, DG De La Torre Ugarte, and TO West. 2012. "Effects of No-Till on Yields as Influenced by Crop and Environmental Factors." Agronomy Journal 104(2):530-541.  doi:10.2134/agronj2011.0291


  • West TO, V Bandaru, CC Brandt, AE Schuh, and SM Ogle. 2011. "Regional Uptake and Release of Crop Carbon in the United States." Biogeosciences 8(8):2037-2046.  doi:10.5194/bg-8-2037-2011
  • West TO. 2011. "Monitoring informs management." Nature Climate Change 1(8):399-400.  doi:10.1038/nclimate1268
  • Garten, Jr CT, DJ Brice, HF Castro, RL Graham, MA Mayes, JR Phillips, WM Post, CW Schadt, SD Wullschleger, DD Tyler, PM Jardine, JD Jastrow, R Matamala, RM Miller, KK Moran, T Vugteveen, RC Izaurralde, AM Thomson, TO West, JE Amonette, VL Bailey, FB Metting, and JL Smith. 2011. "Response of "Alamo" switchgrass tissue chemistry and biomass to nitrogen fertilization in west Tennessee, USA." Agriculture, Ecosystems & Environment 140(1-2):289-297.  doi:10.1016/j.agee.2010.12.016


  • Brown DJ, ER Hunt, Jr, RC Izaurralde, KH Paustian, CW Rice, BL schumaker, and TO West. 2010. "Soil Organic Carbon Change Monitored Over Large Areas." Eos 91(47):441-442.  doi:10.1029/2010EO470001
  • Brown DJ, ER Hunt, Jr., RC Izaurralde, KH Paustian, CW Rice, BL Schumaker, and TO West. 2010. "Soil Organic Carbon Change Monitored Over Large Areas." Eos 91(47):441-442.  doi:10.1029/2010EO470001
  • Brown DJ, ER Hunt, Jr., RC Izaurralde, KH Paustian, CW Rice, TO West, and BL Schumaker. 2010. "Soil Organic Carbon Change Monitored Over Large Areas." Eos 91(47):441.  doi:10.1029/2010EO470001
  • Hellwinckel CM, TO West, DG De La Torre Ugarte, and RD Perlack. 2010. "Evaluating possible cap and trade legislation on cellulosic feedstock availability." Global Change Biology Bioenergy 2(5):278-287.  doi:10.1111/j.1757-1707.2010.01052.x
  • Larson JA, BC English, DG De La Torre Ugarte, RJ Menard, CM Hellwinckel, and TO West. 2010. "Economic and environmental impacts of the corn grain ethanol industry on the United States agricultural sector." Journal of Soil and Water Conservation 65(5):267-279.  doi:10.2489/jswc.65.5.267
  • West TO. 2010. "Introduction: Integrative Approaches for Estimating Current and Future Feedstock Availability." Global Change Biology Bioenergy 2(5):215-216.  doi:10.1111/j.1757-1707.2010.01057.x

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