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Isla R. Simpson
Researcher at National Center for Atmospheric Research
Publications - 112
Citations - 5858
Isla R. Simpson is an academic researcher from National Center for Atmospheric Research. The author has contributed to research in topics: Stratosphere & Climate change. The author has an hindex of 30, co-authored 90 publications receiving 3317 citations. Previous affiliations of Isla R. Simpson include University of Toronto & Imperial College London.
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Journal ArticleDOI
Insights from Earth system model initial-condition large ensembles and future prospects
Clara Deser,Flavio Lehner,Keith B. Rodgers,Toby R. Ault,Thomas L. Delworth,Pedro N. DiNezio,Arlene M. Fiore,Claude Frankignoul,John C. Fyfe,Daniel E. Horton,Jennifer E. Kay,Jennifer E. Kay,Reto Knutti,Nicole S. Lovenduski,Nicole S. Lovenduski,Jochem Marotzke,Karen A. McKinnon,Shoshiro Minobe,James T. Randerson,James A. Screen,Isla R. Simpson,Mingfang Ting +21 more
TL;DR: In this article, a collection of initial-condition large ensembles (LEs) generated with seven Earth system models under historical and future radiative forcing scenarios provides new insights into uncertainties due to internal variability versus model differences.
Journal ArticleDOI
Taking climate model evaluation to the next level
Veronika Eyring,Veronika Eyring,Peter M. Cox,Gregory M. Flato,Peter J. Gleckler,Gab Abramowitz,Peter M. Caldwell,William D. Collins,William D. Collins,Bettina K. Gier,Bettina K. Gier,Alex Hall,Forrest M. Hoffman,Forrest M. Hoffman,George C. Hurtt,Alexandra Jahn,Chris D. Jones,Stephen A. Klein,John P. Krasting,Lester Kwiatkowski,Ruth Lorenz,Eric D. Maloney,Gerald A. Meehl,Angeline G. Pendergrass,Robert Pincus,Alex C. Ruane,Joellen L. Russell,Benjamin M. Sanderson,Benjamin D. Santer,Steven C. Sherwood,Isla R. Simpson,Ronald J. Stouffer,Mark S. Williamson +32 more
TL;DR: The authors discusses newly developed tools that facilitate a more rapid and comprehensive evaluation of model simulations with observations, process-based emergent constraints that are a promising way to focus evaluation on the observations most relevant to climate projections, and advanced methods for model weighting.
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Storm track processes and the opposing influences of climate change
Tiffany A. Shaw,Mark P. Baldwin,Elizabeth A. Barnes,Rodrigo Caballero,Chaim I. Garfinkel,Yen-Ting Hwang,Camille Li,Camille Li,Paul A. O'Gorman,Gwendal Rivière,Isla R. Simpson,Aiko Voigt +11 more
TL;DR: In this article, a synthesis of the influences of a changing climate on storm tracks reveals competing effects on meridional temperature gradients, which make projections difficult, making it difficult to make predictions.
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The Whole Atmosphere Community Climate Model Version 6 (WACCM6)
Andrew Gettelman,Michael J. Mills,Douglas E. Kinnison,Rolando R. Garcia,Anne K. Smith,Daniel R. Marsh,Daniel R. Marsh,Simone Tilmes,Francis Vitt,Charles G. Bardeen,J. McInerny,Hanli Liu,Stanley C. Solomon,Lorenzo M. Polvani,Louisa K. Emmons,Jean-Francois Lamarque,Jadwiga H. Richter,A. S. Glanville,Julio T. Bacmeister,Adam S. Phillips,Richard Neale,Isla R. Simpson,Alice K. DuVivier,Alma Hodzic,William J. Randel +24 more
TL;DR: The Whole Atmosphere Community Climate Model version 6 (WACCM6) is a major update of the whole atmosphere modeling capability in the Community Earth System Model (CESM), featuring enhanced physical, chemical and aerosol parameterizations.
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An Updated Assessment of Near-Surface Temperature Change From 1850: The HadCRUT5 Data Set
Colin Morice,John Kennedy,Nick Rayner,Jonathan Winn,Emma Hogan,Rachel Killick,Robert Dunn,Timothy J. Osborn,Philip Jones,Isla R. Simpson +9 more
TL;DR: HadCRUT5 as discussed by the authors is a global surface temperature dataset that combines sea-surface temperature measurements over the ocean from ships and buoys and near-surface air temperature measurements from weather stations over the land surface.