K
Kristen M. Krumhardt
Researcher at National Center for Atmospheric Research
Publications - 37
Citations - 2075
Kristen M. Krumhardt is an academic researcher from National Center for Atmospheric Research. The author has contributed to research in topics: Climate change & Land cover. The author has an hindex of 16, co-authored 29 publications receiving 1631 citations. Previous affiliations of Kristen M. Krumhardt include University of Geneva & University of Southern Maine.
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The prehistoric and preindustrial deforestation of Europe
TL;DR: In this article, the authors created a very high resolution, annually resolved time series of anthropogenic deforestation in Europe over the past three millennia by digitizing and synthesizing a database of population history for Europe and surrounding areas.
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Holocene carbon emissions as a result of anthropogenic land cover change
Jed O. Kaplan,Kristen M. Krumhardt,Erle C. Ellis,William F. Ruddiman,Carsten Lemmen,Kees Klein Goldewijk +5 more
TL;DR: In this article, the authors developed a new, annually resolved inventory of anthropogenic land cover change from 8000 years ago to the beginning of large-scale industrialization (ad 1850), which is based on a simple relationship between population and land use observed in several European countries over preindustrial time.
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The effects of land use and climate change on the carbon cycle of Europe over the past 500 years
TL;DR: In this paper, a series of simulations with the LPJ dynamic vegetation model driven by reconstructed climate, land use, and CO2 concentrations was performed to quantify the importance of these processes, and the results indicated that with limited management, extant European forests have the potential to absorb between 5 and 12 Pg of carbon at the present day.
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Natural and anthropogenic variations in methane sources during the past two millennia
Célia Sapart,Guillaume Monteil,M. Prokopiou,R. S. W. van de Wal,Jed O. Kaplan,Peter Sperlich,Kristen M. Krumhardt,C. J. van der Veen,Sander Houweling,Sander Houweling,Maarten Krol,Thomas Blunier,Todd Sowers,Patricia Martinerie,Emmanuel Witrant,Dorthe Dahl-Jensen,Thomas Röckmann +16 more
TL;DR: High-resolution carbon isotope data for methane from two ice cores from Greenland for the past two millennia is presented and it is found that the δ13C content underwent pronounced centennial-scale variations between 100 bc and ad 1600.
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Coccolithophore growth and calcification in a changing ocean
TL;DR: It is found that average increases in sea surface temperature lead to faster coccolithophore growth rates globally and increased calcification at high latitudes, and an ubiquitous doubling of surface ocean pCO2 by the end of the century has the potential to moderately stimulate coccolitophore Growth rates, but leads to reduced calcification.