Kenneth R. Sperber
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View article: Systematic and objective evaluation of Earth system models: PCMDI Metrics Package (PMP) version 3
Systematic and objective evaluation of Earth system models: PCMDI Metrics Package (PMP) version 3 Open
Systematic, routine, and comprehensive evaluation of Earth system models (ESMs) facilitates benchmarking improvement across model generations and identifying the strengths and weaknesses of different model configurations. By gauging the co…
View article: Comment on egusphere-2023-2720
Comment on egusphere-2023-2720 Open
Abstract. Systematic, routine, and comprehensive evaluation of Earth System Models (ESMs) facilitates benchmarking improvement across model generations and identifying the strengths and weaknesses of different model config…
View article: Comment on egusphere-2023-2720
Comment on egusphere-2023-2720 Open
Abstract. Systematic, routine, and comprehensive evaluation of Earth System Models (ESMs) facilitates benchmarking improvement across model generations and identifying the strengths and weaknesses of different model config…
View article: Supplementary material to "Objective Evaluation of Earth System Models: PCMDI Metrics Package (PMP) version 3"
Supplementary material to "Objective Evaluation of Earth System Models: PCMDI Metrics Package (PMP) version 3" Open
View article: Objective Evaluation of Earth System Models: PCMDI Metrics Package (PMP) version 3
Objective Evaluation of Earth System Models: PCMDI Metrics Package (PMP) version 3 Open
Systematic, routine, and comprehensive evaluation of Earth System Models (ESMs) facilitates benchmarking improvement across model generations and identifying the strengths and weaknesses of different model configurations. By gauging the co…
View article: Robust Evaluation of ENSO in Climate Models: How Many Ensemble Members Are Needed?
Robust Evaluation of ENSO in Climate Models: How Many Ensemble Members Are Needed? Open
Large ensembles of model simulations require considerable resources, and thus defining an appropriate ensemble size for a particular application is an important experimental design criterion. We estimate the ensemble size ( N ) needed to a…
View article: On the robustness of the evaluation of ENSO in climate models: How many ensemble members are needed?
On the robustness of the evaluation of ENSO in climate models: How many ensemble members are needed? Open
Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Geophysical Research Letters. ESSOAr is a venue for early communication or feedback before peer review. Data may be preliminary.Learn mo…
View article: Benchmarking performance changes in the simulation of extratropical modes of variability across CMIP generations
Benchmarking performance changes in the simulation of extratropical modes of variability across CMIP generations Open
We evaluate extratropical modes of variability in the three most recent phases of the Coupled Model Intercomparison Project (CMIP3, 5, and 6) to gauge improvement of climate models over time. A suite of high-level metrics is employed to ob…
View article: Response to ?A Madden-Julian Oscillation Event Realistically Simulated by a Global Cloud-Resolving Model?
Response to ?A Madden-Julian Oscillation Event Realistically Simulated by a Global Cloud-Resolving Model? Open
I agree with the authors that forecasting the Madden-Julian Oscillation (MJO) in a high resolution global model is important for numerous reasons, including improved weather forecast skill beyond 10 days, and resolving small scale features…
View article: Madden-Julian Variability in Coupled Models
Madden-Julian Variability in Coupled Models Open
The Madden-Julian Oscillation (MJO) is a dominant mode of tropical variability (Madden and Julian 1971, 1972). It is manifested on a timescale of {approx}30-70 days through large-scale circulation anomalies which occur in conjunction with …
View article: Interannual/decadal variability in MJO activity as diagnosed in the 40-year NCEP/NCAR reanalysis and simulated in an ensemble of GISST integrations
Interannual/decadal variability in MJO activity as diagnosed in the 40-year NCEP/NCAR reanalysis and simulated in an ensemble of GISST integrations Open
The Madden-Julian Oscillation (MJO) is the dominant mode of tropical variability at intraseasonal timescales. It displays substantial interannual variability in intensity which may have important implications for the predictability of the …
View article: Representation of Modes of Variability in Six U.S. Climate Models
Representation of Modes of Variability in Six U.S. Climate Models Open
We compare the performance of several modes of variability across six U.S. climate modeling groups, with a focus on identifying robust improvements in recent models [including those participating in phase 6 of the Coupled Model Intercompar…
View article: MJO Propagation Across the Maritime Continent: Are CMIP6 Models Better Than CMIP5 Models?
MJO Propagation Across the Maritime Continent: Are CMIP6 Models Better Than CMIP5 Models? Open
Many climate models struggle with a poor simulation of the Madden‐Julian Oscillation (MJO), especially its propagation across the Maritime Continent (MC). This study quantitatively evaluates the robustness of MJO propagation over the MC in…
View article: CMIP5: a Monte Carlo assessment of changes in summertime precipitation characteristics under RCP8.5-sensitivity to annual cycle fidelity, overconfidence, and gaussianity
CMIP5: a Monte Carlo assessment of changes in summertime precipitation characteristics under RCP8.5-sensitivity to annual cycle fidelity, overconfidence, and gaussianity Open
View article: Legacy of the Madden-Julian Oscillation Working Group
Legacy of the Madden-Julian Oscillation Working Group Open
There is a long history of observational and model evaluation of the MJO. Even so, the underlying physics of the MJO remains poorly understood. Initial analyses of the MJO in models concentrated on large-scale diagnosis using such variable…
View article: Quantifying the agreement between observed and simulated extratropical modes of interannual variability
Quantifying the agreement between observed and simulated extratropical modes of interannual variability Open
View article: Evaluation of multi-decadal UCLA-CFSv2 simulation and impact of interactive atmospheric-ocean feedback on global and regional variability
Evaluation of multi-decadal UCLA-CFSv2 simulation and impact of interactive atmospheric-ocean feedback on global and regional variability Open
View article: MJO simulation in CMIP5 climate models: MJO skill metrics and process-oriented diagnosis
MJO simulation in CMIP5 climate models: MJO skill metrics and process-oriented diagnosis Open
View article: Modelling Monsoons
Modelling Monsoons Open