Search Results - "Kaplan, J. O"

Impacts of changes in land use and land cover on atmospheric chemistry and air quality over the 21st century by Wu, S, Mickley, L. J, Kaplan, J. O, Jacob, D. J

“…The effects of future land use and land cover change on the chemical composition of the atmosphere and air quality are largely unknown. To investigate the…”
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Late Holocene climate: Natural or anthropogenic? by Ruddiman, W. F., Fuller, D. Q., Kutzbach, J. E., Tzedakis, P. C., Kaplan, J. O., Ellis, E. C., Vavrus, S. J., Roberts, C. N., Fyfe, R., He, F., Lemmen, C., Woodbridge, J.

“…For more than a decade, scientists have argued about the warmth of the current interglaciation. Was the warmth of the preindustrial late Holocene natural in…”
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Reconstructing European forest management from 1600 to 2010 by McGrath, M. J, Luyssaert, S, Meyfroidt, P, Kaplan, J. O, Bürgi, M, Chen, Y, Erb, K, Gimmi, U, McInerney, D, Naudts, K, Otto, J, Pasztor, F, Ryder, J, Schelhaas, M.-J, Valade, A

“…Because of the slow accumulation and long residence time of carbon in biomass and soils, the present state and future dynamics of temperate forests are…”
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A model for global biomass burning in preindustrial time: LPJ-LMfire (v1.0) by Pfeiffer, M, Spessa, A, Kaplan, J. O

“…Fire is the primary disturbance factor in many terrestrial ecosystems. Wildfire alters vegetation structure and composition, affects carbon storage and…”
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Europe’s lost forests: a pollen-based synthesis for the last 11,000 years by Roberts, N., Fyfe, R. M., Woodbridge, J., Gaillard, M.-J., Davis, B. A. S., Kaplan, J. O., Marquer, L., Mazier, F., Nielsen, A. B., Sugita, S., Trondman, A.-K., Leydet, M.

“…8000 years ago, prior to Neolithic agriculture, Europe was mostly a wooded continent. Since then, its forest cover has been progressively fragmented, so that…”
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Reassessment of pre-industrial fire emissions strongly affects anthropogenic aerosol forcing by Hamilton, D. S., Hantson, S., Scott, C. E., Kaplan, J. O., Pringle, K. J., Nieradzik, L. P., Rap, A., Folberth, G. A., Spracklen, D. V., Carslaw, K. S.

“…Uncertainty in pre-industrial natural aerosol emissions is a major component of the overall uncertainty in the radiative forcing of climate. Improved…”
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Present state of global wetland extent and wetland methane modelling: conclusions from a model inter-comparison project (WETCHIMP) by Melton, J. R, Wania, R, Hodson, E. L, Poulter, B, Ringeval, B, Spahni, R, Bohn, T, Avis, C. A, Beerling, D. J, Chen, G, Eliseev, A. V, Denisov, S. N, Hopcroft, P. O, Lettenmaier, D. P, Riley, W. J, Singarayer, J. S, Subin, Z. M, Tian, H, Zürcher, S, Brovkin, V, van Bodegom, P. M, Kleinen, T, Yu, Z. C, Kaplan, J. O

“…Global wetlands are believed to be climate sensitive, and are the largest natural emitters of methane (CH4). Increased wetland CH4 emissions could act as a…”
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Natural and anthropogenic variations in methane sources during the past two millennia by Sapart, C. J., Monteil, G., Prokopiou, M., van de Wal, R. S. W., Kaplan, J. O., Sperlich, P., Krumhardt, K. M., van der Veen, C., Houweling, S., Krol, M. C., Blunier, T., Sowers, T., Martinerie, P., Witrant, E., Dahl-Jensen, D., Röckmann, T.

“…Centennial-scale variations in methane carbon isotope ratios are attributed to changes in pyrogenic and biogenic sources that can be correlated with…”
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Factors controlling variability in the oxidative capacity of the troposphere since the Last Glacial Maximum by Murray, L. T, Mickley, L. J, Kaplan, J. O, Sofen, E. D, Pfeiffer, M, Alexander, B

“…The oxidative capacity of past atmospheres is highly uncertain. We present here a new climate–biosphere–chemistry modeling framework to determine oxidant…”
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WETCHIMP-WSL: intercomparison of wetland methane emissions models over West Siberia by Bohn, T. J, Melton, J. R, Ito, A, Kleinen, T, Spahni, R, Stocker, B. D, Zhang, B, Zhu, X, Schroeder, R, Glagolev, M. V, Maksyutov, S, Brovkin, V, Chen, G, Denisov, S. N, Eliseev, A. V, Gallego-Sala, A, McDonald, K. C, Rawlins, M.A, Riley, W. J, Subin, Z. M, Tian, H, Zhuang, Q, Kaplan, J. O

“…Wetlands are the world's largest natural source of methane, a powerful greenhouse gas. The strong sensitivity of methane emissions to environmental factors…”
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Global emissions of terpenoid VOCs from terrestrial vegetation in the last millennium by Acosta Navarro, J. C., Smolander, S., Struthers, H., Zorita, E., Ekman, A. M. L., Kaplan, J. O., Guenther, A., Arneth, A., Riipinen, I.

“…We investigated the millennial variability (1000 A.D.–2000 A.D.) of global biogenic volatile organic compound (BVOC) emissions by using two independent…”
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The influence of atmospheric circulation on the mid-Holocene climate of Europe: a data–model comparison by Mauri, A, Davis, B. A. S, Collins, P. M, Kaplan, J. O

“…The atmospheric circulation is a key area of uncertainty in climate model simulations of future climate change, especially in mid-latitude regions such as…”
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The El Niño-Southern Oscillation and wetland methane interannual variability by Hodson, E. L., Poulter, B., Zimmermann, N. E., Prigent, C., Kaplan, J. O.

“…Global measurements of atmospheric methane (CH4) concentrations continue to show large interannual variability whose origin is only partly understood. Here we…”
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Pre-Columbian deforestation as an amplifier of drought in Mesoamerica by Cook, B. I., Anchukaitis, K. J., Kaplan, J. O., Puma, M. J., Kelley, M., Gueyffier, D.

“…Droughts in pre‐Columbian Mesoamerica caused significant societal disruptions during the Late Classic and Post‐Classic Periods. While the primary causes of…”
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Uncertainties in isoprene photochemistry and emissions: implications for the oxidative capacity of past and present atmospheres and for climate forcing agents by Achakulwisut, P, Mickley, L J, Murray, L T, Tai, A P K, Kaplan, J O, Alexander, B

“…Isoprene and its oxidation products are major players in the oxidative chemistry of the troposphere. Current understanding of the factors controlling biogenic…”
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Magnitude and seasonality of wetland methane emissions from the Hudson Bay Lowlands (Canada) by Pickett-Heaps, C. A., Jacob, D. J., Wecht, K. J., Kort, E. A., Wofsy, S. C., Diskin, G. S., Worthy, D. E. J., Kaplan, J. O., Bey, I., Drevet, J.

“…The Hudson Bay Lowlands (HBL) is the second largest boreal wetland ecosystem in the world and an important natural source of global atmospheric methane. We…”
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Present state of global wetland extent and wetland methane modelling: methodology of a model inter-comparison project (WETCHIMP) by Wania, R, Melton, J. R, Hodson, E. L, Poulter, B, Ringeval, B, Spahni, R, Bohn, T, Avis, C. A, Chen, G, Eliseev, A. V, Hopcroft, P. O, Riley, W. J, Subin, Z. M, Tian, H, van Bodegom, P. M, Kleinen, T, Yu, Z. C, Singarayer, J. S, Zürcher, S, Lettenmaier, D. P, Beerling, D. J, Denisov, S. N, Prigent, C, Papa, F, Kaplan, J. O

“…The Wetland and Wetland CH4 Intercomparison of Models Project (WETCHIMP) was created to evaluate our present ability to simulate large-scale wetland…”
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Evaluation of ecosystem dynamics, plant geography and terrestrial carbon cycling in the LPJ dynamic global vegetation model by Sitch, S., Smith, B., Prentice, I. C., Arneth, A., Bondeau, A., Cramer, W., Kaplan, J. O., Levis, S., Lucht, W., Sykes, M. T., Thonicke, K., Venevsky, S.

“…The Lund–Potsdam–Jena Dynamic Global Vegetation Model (LPJ) combines process‐based, large‐scale representations of terrestrial vegetation dynamics and…”
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WRF-Chem simulations in the Amazon region during wet and dry season transitions: evaluation of methane models and wetland inundation maps by Beck, V, Gerbig, C, Koch, T, Bela, M. M, Longo, K. M, Freitas, S. R, Kaplan, J. O, Prigent, C, Bergamaschi, P, Heimann, M

“…The Amazon region, being a large source of methane (CH4), contributes significantly to the global annual CH4 budget. For the first time, a forward and inverse…”
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Short Communication: Humans and the missing C-sink: erosion and burial of soil carbon through time by Hoffmann, T, Mudd, S. M, van Oost, K, Verstraeten, G, Erkens, G, Lang, A, Middelkoop, H, Boyle, J, Kaplan, J. O, Willenbring, J, Aalto, R

“…Is anthropogenic soil erosion a sink or source of atmospheric carbon? The answer depends on factors beyond hillslope erosion alone because the probable fate of…”
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