Groisman Pavel Ya

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Groisman
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Pavel Ya
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  • Article
    A review of and perspectives on global change modeling for Northern Eurasia
    (IOP Science, 2017-08-08) Monier, Erwan ; Kicklighter, David W. ; Sokolov, Andrei P. ; Zhuang, Qianlai ; Sokolik, Irina ; Lawford, Richard ; Kappas, Martin ; Paltsev, Sergey ; Groisman, Pavel Ya
    Northern Eurasia is made up of a complex and diverse set of physical, ecological, climatic and human systems, which provide important ecosystem services including the storage of substantial stocks of carbon in its terrestrial ecosystems. At the same time, the region has experienced dramatic climate change, natural disturbances and changes in land management practices over the past century. For these reasons, Northern Eurasia is both a critical region to understand and a complex system with substantial challenges for the modeling community. This review is designed to highlight the state of past and ongoing efforts of the research community to understand and model these environmental, socioeconomic, and climatic changes. We further aim to provide perspectives on the future direction of global change modeling to improve our understanding of the role of Northern Eurasia in the coupled human–Earth system. Modeling efforts have shown that environmental and socioeconomic changes in Northern Eurasia can have major impacts on biodiversity, ecosystems services, environmental sustainability, and the carbon cycle of the region, and beyond. These impacts have the potential to feedback onto and alter the global Earth system. We find that past and ongoing studies have largely focused on specific components of Earth system dynamics and have not systematically examined their feedbacks to the global Earth system and to society. We identify the crucial role of Earth system models in advancing our understanding of feedbacks within the region and with the global system. We further argue for the need for integrated assessment models (IAMs), a suite of models that couple human activity models to Earth system models, which are key to address many emerging issues that require a representation of the coupled human–Earth system.
  • Article
    Northern Eurasia Future Initiative (NEFI) : facing the challenges and pathways of global change in the twenty-first century
    (Springer, 2017-12-27) Groisman, Pavel Ya ; Shugart, Herman ; Kicklighter, David W. ; Henebry, Geoffrey ; Tchebakova, Nadezhda ; Maksyutov, Shamil ; Monier, Erwan ; Gutman, Garik ; Gulev, Sergey ; Qi, Jiaguo ; Prishchepov, Alexander ; Kukavskaya, Elena ; Porfiriev, Boris ; Shiklomanov, Alexander ; Loboda, Tatiana ; Shiklomanov, Nikolay ; Nghiem, Son ; Bergen, Kathleen ; Albrechtová, Jana ; Chen, Jiquan ; Shahgedanova, Maria ; Shvidenko, Anatoly ; Speranskaya, Nina ; Soja, Amber ; de Beurs, Kirsten ; Bulygina, Olga N ; McCarty, Jessica ; Zhuang, Qianlai ; Zolina, Olga
    During the past several decades, the Earth system has changed significantly, especially across Northern Eurasia. Changes in the socio-economic conditions of the larger countries in the region have also resulted in a variety of regional environmental changes that can have global consequences. The Northern Eurasia Future Initiative (NEFI) has been designed as an essential continuation of the Northern Eurasia Earth Science Partnership Initiative (NEESPI), which was launched in 2004. NEESPI sought to elucidate all aspects of ongoing environmental change, to inform societies and, thus, to better prepare societies for future developments. A key principle of NEFI is that these developments must now be secured through science-based strategies co-designed with regional decision-makers to lead their societies to prosperity in the face of environmental and institutional challenges. NEESPI scientific research, data, and models have created a solid knowledge base to support the NEFI program. This paper presents the NEFI research vision consensus based on that knowledge. It provides the reader with samples of recent accomplishments in regional studies and formulates new NEFI science questions. To address these questions, nine research foci are identified and their selections are briefly justified. These foci include warming of the Arctic; changing frequency, pattern, and intensity of extreme and inclement environmental conditions; retreat of the cryosphere; changes in terrestrial water cycles; changes in the biosphere; pressures on land use; changes in infrastructure; societal actions in response to environmental change; and quantification of Northern Eurasia’s role in the global Earth system. Powerful feedbacks between the Earth and human systems in Northern Eurasia (e.g., mega-fires, droughts, depletion of the cryosphere essential for water supply, retreat of sea ice) result from past and current human activities (e.g., large-scale water withdrawals, land use, and governance change) and potentially restrict or provide new opportunities for future human activities. Therefore, we propose that integrated assessment models are needed as the final stage of global change assessment. The overarching goal of this NEFI modeling effort will enable evaluation of economic decisions in response to changing environmental conditions and justification of mitigation and adaptation efforts.