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Paul J. Valdes
Researcher at University of Bristol
Publications - 384
Citations - 24048
Paul J. Valdes is an academic researcher from University of Bristol. The author has contributed to research in topics: Climate change & Climate model. The author has an hindex of 77, co-authored 344 publications receiving 20662 citations. Previous affiliations of Paul J. Valdes include University of Oxford & University of Reading.
Papers
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South American palaeoclimate model simulations: how reliable are the models?
TL;DR: This paper examined the modelling uncertainties by discussing results from the Palaeoclimate Model Intercomparison Project (PMIP), which simulated the mid-Holocene (6 kyr BP) and the Last Glacial Maximum (LGM, 21 kyrBP).
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Understanding the glacial methane cycle
TL;DR: Simulating the observed LGM CH4 concentration requires a 46–49% reduction in sources, indicating that the observed amplitude cannot be reconciled, and highlights the need for better understanding of the effects of low CO2 and cooler climate on wetlands and other natural CH4 sources.
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Late Quaternary climate legacies in contemporary plant functional composition
Benjamin Blonder,Benjamin Blonder,Benjamin Blonder,Brian J. Enquist,Brian J. Enquist,Bente J. Graae,Jens Kattge,Brian S. Maitner,Naia Morueta-Holme,Alejandro Ordonez,Alejandro Ordonez,Irena Šímová,Joy S. Singarayer,Jens-Christian Svenning,Paul J. Valdes,Cyrille Violle +15 more
TL;DR: Paleoclimate predictors strongly improved prediction of contemporary functional composition compared to contemporary climate predictors, with a stronger influence of temperature in North America (especially during periods of ice melting) and of precipitation in South America (across all times).
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Terrestrial biosphere changes over the last 120 kyr
Babette A A Hoogakker,Robin S. Smith,Joy S. Singarayer,Joy S. Singarayer,Rob Marchant,Iain Colin Prentice,Iain Colin Prentice,Judy R M Allen,R. S. Anderson,Shonil A. Bhagwat,Hermann Behling,Olga K. Borisova,Mark B. Bush,Alexander Correa-Metrio,A. de Vernal,Jemma M. Finch,Bianca Fréchette,Socorro Lozano-García,William D. Gosling,Wojciech Granoszewski,Eric C. Grimm,Eberhard Grüger,Jennifer A. Hanselman,Sandy P. Harrison,Sandy P. Harrison,Trevor Hill,Brian Huntley,Gonzalo Jiménez-Moreno,Peter Kershaw,M.-P. Ledru,Donatella Magri,Merna McKenzie,Ulrich C Müller,Takeshi Nakagawa,Elena Novenko,Dan Penny,Laura Sadori,Louis Scott,Janelle Stevenson,Paul J. Valdes,M. Vandergoes,A.A. Velichko,Cathy Whitlock,C. Tzedakis +43 more
TL;DR: In this paper, a new global synthesis and biomization of long (>40kyr) pollen-data records is presented and used with simulations from the HadCM3 and FAMOUS climate models and the BIOME4 vegetation model to analyse the dynamics of the global terrestrial biosphere and carbon storage over the last glacial-interglacial cycle.
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Antarctic last interglacial isotope peak in response to sea ice retreat not ice-sheet collapse
Max D. Holloway,Max D. Holloway,Louise C. Sime,Joy S. Singarayer,Julia Tindall,Pete Bunch,Paul J. Valdes +6 more
TL;DR: In this paper, a reduction in winter sea ice area of 65±7% fully explains the isotope evidence at 128,000 years ago (128 ka); very early in the last interglacial, showing that a marked retreat of the sea ice at 128-ka demonstrates the sensitivity of Antarctic sea ice extent to climate warming.