PNNL

Dr. Nazar Kholod, DSc, is an Earth scientist at the Joint Global Change Research Institute (Pacific Northwest National Laboratory Global Change Division). Dr. Kholod's research has focused on analyzing energy policy, emissions, and sustainable growth. He has expertise in conceptualizing, designing, and implementing large-scale programs and has worked with various stakeholders, including the U.S. government, DOE national laboratories, think tanks, and the private sector. Dr. Kholod has an extensive network of contacts within the Government of Ukraine, Ukrainian academia and nongovernmental organizations, and international financial institutions and development partners. He leads the development of GCAM-Ukraine in analyzing energy production, consumption, and emissions in post-war Ukraine.

Dr. Kholod also holds a joint appointment with the University of Maryland’s School of Public Policy. Prior to joining the Joint Global Change Research Institute, Dr. Kholod was a research analyst at the Peterson Institute for International Economics in Washington, D.C. 

• Energy policy
• Energy security
• Integrated assessment
• Project management
• Fluent in Russian
• Fluent in Ukrainian

• DSc, economics, Ivan Franko National University of Lviv
• MPP, University of Maryland at College Park
• MA, sociology, Ivan Franko National University of Lviv
• BA, sociology, Ivan Franko National University of Lviv

• American Geophysical Union
• Research professor at the Center for Global Sustainability at the University of Maryland

• Bringing Excellence to Science and Technology Award for Collaboration for Ukraine Reconstruction and Recovery, Pacific Northwest National Laboratory (2023)
• Fulbright Senior Scholar, Kennan Institute, Woodrow Wilson International Center for Scholars Washington, D.C. (2006)
• Research Fellow, Regional Scholar Exchange Program, University of Washington, Seattle, Washington (2003)

2025

Diachuk, O., N. Kholod, R. Podolets, N. Graham, A. Semeniuk, M. Evans, M. I. Westphal, T. Stelmach, R. Hoesly, G. Trypolska,  and A. Zagoruichyk. 2025. “Pathways for Decarbonization of the Buildings Sector in Ukraine.” Energy and Climate Change, 100195. https://doi.org/10.1016/j.egycc.2025.100195.

Kholod, N., O. Savytskyi, A. Zagoruichyk, O. Diachuk, and A. Semeniuk. "Coal Mining and Coal Mine Methane Emissions in Ukraine: Retrospective Analysis from 1860 and Projections Up to 2060.” Available at SSRN 5114671. http://dx.doi.org/10.2139/ssrn.5114671.

2023

Waite, T., M. Evans, N. Kholod, N. Blahut, and J. Rowland. 2023. “Review of quantitative methods to assess impacts of changing climate and socioeconomic conditions on Arctic transportation systems.” Ambio 52 (7): 1155–1169. https://doi.org/10.1007/s13280-023-01853-0.

Kholod, N., O. Diachuk, R. Podolets, G. Trypolska, A. Semeniuk, A. Kanudia, E. Wright, A. Antonenko, A. Chebotnikova, O. Pavlenko, R. Miglio, P. DeStephano, C. Szum, I. Chernyakhovskiy, and A. Sakharova. 2023 Clean Energy Roadmap: From Reconstruction to Decarbonization in Ukraine. Net Zero World Initiative. https://www.pnnl.gov/sites/default/files/media/file/Ukraine%20NZW%20COP28%20report%202023.pdf.

2022

Dharmala, N., N. Kholod, V. Chaturvedi, P. P. Ghosh, R. Mathur, S. Bali, A. Behera, S. Chamola, L. Clarke, M. Evans, and R. Horowitz. 2022. “Win-win transportation strategies for India: Linking air pollution and climate mitigation.” Energy and Climate Change, 3: 100072. https://doi.org/10.1016/j.egycc.2022.100072.

2021

Jian, J., R. Vargas, K. Anderson-Teixeira, E. Stell, V. Herrmann, M. Horn, N. Kholod, J. Manzon, R. Marchesi, D. Paredes, and B. Bond-Lamberty. 2020. "A restructured and updated global soil respiration database". (SRDB-V5). Earth System Science Data Discussions 13 (2): 255-267. https://doi.org/10.5194/essd-13-255-2021 .

Kholod, N., M. Evans, Z. Khan, M. Hejazi, and V. Chaturvedi. 2021. “Water-energy-food nexus in India: A critical review.” Energy and Climate Change 2: 100060. https://doi.org/10.1016/j.egycc.2021.100060.

2020

Kholod, N., M. Evans, R. C. Pilcher, V. Roshchanka, F. Ruiz, M. Coté, and R. Collings. 2020. "Global methane emissions from coal mining to continue growing even with declining coal production." Journal of Cleaner Production 256: 120489. https://doi.org/10.1016/j.jclepro.2020.120489.

2018

Paladugula, A. L., N. Kholod, V. Chaturvedi, P. P. Ghosh, S. Pal, L. Clarke, M. Evans, P. Kyle, P. N. Koti, K. Parikh, and S. Qamar. 2018. “A multi-model assessment of energy and emissions for India's transportation sector through 2050”. Energy Policy 116: 10–18. https://www.sciencedirect.com/science/article/pii/S0301421518300466.

Hoesly, R. M., S. J. Smith, L. Feng, Z. Klimont, G. Janssens-Maenhout, T. Pitkanen, J. J. Seibert, L. Vu, R. J. Andres, R. M. Bolt, T. C. Bond, and N. Kholod. 2018. “Historical (1750–2014) anthropogenic emissions of reactive gases and aerosols from the Community Emissions Data System (CEDS).” Geoscientific Model Development 11 (1): 369–408. https://gmd.copernicus.org/articles/11/369/2018/.

Srinivasan, S., N. Kholod, V. Chaturvedi, P. P. Ghosh, R. Mathur, L. Clarke, M. Evans, M. Hejazi, A. Kanudia, P. N. Koti, and B. Liu. 2018. “Water for electricity in India: A multi-model study of future challenges and linkages to climate change mitigation.” Applied Energy 210: 673–684. https://www.sciencedirect.com/science/article/pii/S0306261917304725.

2017

Roshchanka, V., M. Evans, F. Ruiz, and N. Kholod. 2017. “A strategic approach to selecting policy mechanisms for addressing coal mine methane emissions: A case study on Kazakhstan.” Environmental Science & Policy 78: 185–192. https://www.sciencedirect.com/science/article/pii/S1462901117300278.

Evans, M., N. Kholod, T. Kuklinski, A. Denysenko, S. J. Smith, A. Staniszewski, W. M. Hao, L. Liu, and T. C. Bond. 2017. “Black carbon emissions in Russia: A critical review.” Atmospheric Environment 163: 9–21. https://www.sciencedirect.com/science/article/pii/S1352231017303278 .

2016

Kholod, N., M. Evans, and T. Kuklinski. 2016. “Russia's black carbon emissions: focus on diesel sources." Atmospheric Chemistry and Physics 16 (17): 11267–11281. https://acp.copernicus.org/articles/16/11267/2016/.

Kholod, N., M. Evans, E. Gusev, S. Yu, V. Malyshev, S. Tretyakova, and A. Barinov. 2016. “A methodology for calculating transport emissions in cities with limited traffic data: Case study of diesel particulates and black carbon emissions in Murmansk.” Science of The Total Environment 547: (305–313). https://www.sciencedirect.com/science/article/pii/S0048969715313061.

Kholod, N., and M. Evans. 2016. “Reducing black carbon emissions from diesel vehicles in Russia: An assessment and policy recommendations.” Environmental Science & Policy 56: 1–8. https://www.sciencedirect.com/science/article/pii/S1462901115301003.

Kholod, N., M. Evans, and T. Kuklinski. 2016. “Russia's black carbon emissions: focus on diesel sources.” Atmospheric Chemistry and Physics 16 (17): 11267–11281. https://acp.copernicus.org/articles/16/11267/2016/.

2015

Evans, M., N. Kholod, V. Malyshev, S. Tretyakova, E. Gusev, S. Yu, and A. Barinov. 2015. “Black carbon emissions from Russian diesel sources: case study of Murmansk.” Atmospheric Chemistry and Physics 15 (14): 8349–8359. https://acp.copernicus.org/articles/15/8349/2015/.