P K Duke

About

P. K. Duke is an Arctic biogeochemist whose research illuminates the critical role of coastal systems in the global greenhouse gas budget. His most-cited work, "River inflow dominates methane emissions in an Arctic coastal system" (2019, 4 citations), challenges the prevailing summer-only bias in Arctic observations by presenting a rare year-round time series of dissolved methane (CH₄) and nitrous oxide (N₂O). Duke’s major contribution lies in demonstrating that riverine inputs, not in-situ production, are the primary driver of methane emissions during ice-free periods—a finding that reshapes how scientists model carbon fluxes in rapidly warming polar regions. By capturing data during the elusive seasonal ice retreat, his work fills a critical observational gap, revealing that current estimates may significantly underestimate Arctic coastal emissions. Duke’s research has direct implications for understanding feedback loops between climate change and permafrost thaw, and his methodological focus on year-round monitoring provides a blueprint for future studies. His findings are increasingly cited in syntheses of polar methane dynamics, cementing his reputation as a key voice in Arctic greenhouse gas science.

Research Focus

Key Achievements

Top Papers

1. 1
   River inflow dominates methane emissions in an Arctic coastal system

   4 citations · 2019

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