A decision tree algorithm for investigation of model biases related to dynamical cores and physical parameterizations: CESM/CAM EVALUATION BY DECISION TREES
Abstract
An object-based evaluation method using a pattern recognition algorithm (i.e., classification trees) is applied to the simulated orographic precipitation for idealized experimental setups using the National Center of Atmospheric Research (NCAR) Community Atmosphere Model (CAM) with the finite volume (FV) and the Eulerian spectral transform dynamical cores with varying resolutions. Daily simulations were analyzed and three different types of precipitation features were identified by the classification tree algorithm. The statistical characteristics of these features (i.e., maximum value, mean value, and variance) were calculated to quantify the difference between the dynamical cores and changing resolutions. Even with the simple and smooth topography in the idealized setups, complexity in the precipitation fields simulated by the models develops quickly. The classification tree algorithm using objective thresholding successfully detected different types of precipitation features even as the complexity of the precipitation field increased. The results show that the complexity and the bias introduced in small-scale phenomena due to the spectral transform method of CAM Eulerian spectral dynamical core is prominent, and is an important reason for its dissimilarity from the FV dynamical core. The resolvable scales, both in horizontal and vertical dimensions, have significant effect on the simulation of precipitation. The results of thismore »
- Authors:
-
- Univ. of Colorado, Boulder, CO (United States); National Oceanic and Atmospheric Administration (NOAA), Boulder, CO (United States). Earth System Research Lab.
- Univ. of Michigan, Ann Arbor, MI (United States)
- Publication Date:
- Research Org.:
- Univ. of Michigan, Ann Arbor, MI (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1425409
- Grant/Contract Number:
- SC0006684
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Advances in Modeling Earth Systems
- Additional Journal Information:
- Journal Volume: 8; Journal Issue: 4; Journal ID: ISSN 1942-2466
- Publisher:
- American Geophysical Union (AGU)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES
Citation Formats
Soner Yorgun, M., and Rood, Richard B. A decision tree algorithm for investigation of model biases related to dynamical cores and physical parameterizations: CESM/CAM EVALUATION BY DECISION TREES. United States: N. p., 2016.
Web. doi:10.1002/2016MS000657.
Soner Yorgun, M., & Rood, Richard B. A decision tree algorithm for investigation of model biases related to dynamical cores and physical parameterizations: CESM/CAM EVALUATION BY DECISION TREES. United States. https://doi.org/10.1002/2016MS000657
Soner Yorgun, M., and Rood, Richard B. Fri .
"A decision tree algorithm for investigation of model biases related to dynamical cores and physical parameterizations: CESM/CAM EVALUATION BY DECISION TREES". United States. https://doi.org/10.1002/2016MS000657. https://www.osti.gov/servlets/purl/1425409.
@article{osti_1425409,
title = {A decision tree algorithm for investigation of model biases related to dynamical cores and physical parameterizations: CESM/CAM EVALUATION BY DECISION TREES},
author = {Soner Yorgun, M. and Rood, Richard B.},
abstractNote = {An object-based evaluation method using a pattern recognition algorithm (i.e., classification trees) is applied to the simulated orographic precipitation for idealized experimental setups using the National Center of Atmospheric Research (NCAR) Community Atmosphere Model (CAM) with the finite volume (FV) and the Eulerian spectral transform dynamical cores with varying resolutions. Daily simulations were analyzed and three different types of precipitation features were identified by the classification tree algorithm. The statistical characteristics of these features (i.e., maximum value, mean value, and variance) were calculated to quantify the difference between the dynamical cores and changing resolutions. Even with the simple and smooth topography in the idealized setups, complexity in the precipitation fields simulated by the models develops quickly. The classification tree algorithm using objective thresholding successfully detected different types of precipitation features even as the complexity of the precipitation field increased. The results show that the complexity and the bias introduced in small-scale phenomena due to the spectral transform method of CAM Eulerian spectral dynamical core is prominent, and is an important reason for its dissimilarity from the FV dynamical core. The resolvable scales, both in horizontal and vertical dimensions, have significant effect on the simulation of precipitation. The results of this study also suggest that an efficient and informative study about the biases produced by GCMs should involve daily (or even hourly) output (rather than monthly mean) analysis over local scales.},
doi = {10.1002/2016MS000657},
journal = {Journal of Advances in Modeling Earth Systems},
number = 4,
volume = 8,
place = {United States},
year = {Fri Nov 11 00:00:00 EST 2016},
month = {Fri Nov 11 00:00:00 EST 2016}
}
Web of Science
Works referenced in this record:
Evaluation of regional climate model temperature and precipitation outputs over Scandinavia
journal, August 2014
- Landgren, Oa; Haugen, Je; Førland, Ej
- Climate Research, Vol. 60, Issue 3
Determining the effective resolution of advection schemes. Part I: Dispersion analysis
journal, December 2014
- Kent, James; Whitehead, Jared P.; Jablonowski, Christiane
- Journal of Computational Physics, Vol. 278
An Object-Based Approach for Quantification of GCM Biases of the Simulation of Orographic Precipitation. Part I: Idealized Simulations
journal, December 2014
- Yorgun, M. Soner; Rood, Richard B.
- Journal of Climate, Vol. 27, Issue 24
Multidimensional Flux-Form Semi-Lagrangian Transport Schemes
journal, September 1996
- Lin, Shian-Jiann; Rood, Richard B.
- Monthly Weather Review, Vol. 124, Issue 9
Analysis of Tropical Cyclone Precipitation Using an Object-Based Algorithm
journal, April 2013
- Skok, Gregor; Bacmeister, Julio; Tribbia, Joseph
- Journal of Climate, Vol. 26, Issue 8
SAL—A Novel Quality Measure for the Verification of Quantitative Precipitation Forecasts
journal, November 2008
- Wernli, Heini; Paulat, Marcus; Hagen, Martin
- Monthly Weather Review, Vol. 136, Issue 11
Verification of precipitation in weather systems: determination of systematic errors
journal, December 2000
- Ebert, E. E.; McBride, J. L.
- Journal of Hydrology, Vol. 239, Issue 1-4
Simulated climate near steep topography: Sensitivity to numerical methods for atmospheric transport
journal, January 2008
- Bala, G.; Rood, R. B.; Bader, D.
- Geophysical Research Letters, Vol. 35, Issue 14
The Evolution of Dynamical Cores for Global Atmospheric Models
journal, January 2007
- Williamson, David L.
- Journal of the Meteorological Society of Japan, Vol. 85B
Regional climate modelling over complex terrain: an evaluation study of COSMO-CLM hindcast model runs for the Greater Alpine Region
journal, September 2012
- Haslinger, Klaus; Anders, Ivonne; Hofstätter, Michael
- Climate Dynamics, Vol. 40, Issue 1-2
Idealized tropical cyclone simulations of intermediate complexity: A test case for AGCMs
journal, February 2012
- Reed, Kevin A.; Jablonowski, Christiane
- Journal of Advances in Modeling Earth Systems, Vol. 4, Issue 2
Numerical advection algorithms and their role in atmospheric transport and chemistry models
journal, January 1987
- Rood, Richard B.
- Reviews of Geophysics, Vol. 25, Issue 1
Statistical Analyses of Satellite Cloud Object Data from CERES. Part I: Methodology and Preliminary Results of the 1998 El Niño/2000 La Niña
journal, July 2005
- Xu, Kuan-Man; Wong, Takmeng; Wielicki, Bruce A.
- Journal of Climate, Vol. 18, Issue 13
Microphysical and Geometrical Controls on the Pattern of Orographic Precipitation
journal, March 2006
- Roe, Gerard H.; Baker, Marcia B.
- Journal of the Atmospheric Sciences, Vol. 63, Issue 3
Evaluation of Cloud Physical Properties of ECMWF Analysis and Re-Analysis (ERA) against CERES Tropical Deep Convective Cloud Object Observations
journal, January 2009
- Xu, Kuan-Man
- Monthly Weather Review, Vol. 137, Issue 1
Water vapor transport in the NCAR CCM2
journal, January 1994
- Williamson, David L.; Rasch, Philip J.
- Tellus A: Dynamic Meteorology and Oceanography, Vol. 46, Issue 1
An explicit flux-form semi-lagrangian shallow-water model on the sphere
journal, October 1997
- Lin, Shian-Jiann; Rood, Richard B.
- Quarterly Journal of the Royal Meteorological Society, Vol. 123, Issue 544
Object-Based Evaluation of MERRA Cloud Physical Properties and Radiative Fluxes during the 1998 El Niño–La Niña Transition
journal, November 2012
- Posselt, Derek J.; Jongeward, Andrew R.; Hsu, Chuan-Yuan
- Journal of Climate, Vol. 25, Issue 21
An Object-Based Approach for Quantification of GCM Biases of the Simulation of Orographic Precipitation. Part II: Quantitative Analysis
journal, June 2015
- Yorgun, M. Soner; Rood, Richard B.
- Journal of Climate, Vol. 28, Issue 12
Assessment of the Performance of CORDEX Regional Climate Models in Simulating East African Rainfall
journal, November 2013
- Endris, Hussen Seid; Omondi, Philip; Jain, Suman
- Journal of Climate, Vol. 26, Issue 21
Evaluation of a CCSM3 Simulation with a Finite Volume Dynamical Core for the Atmosphere at 1° Latitude × 1.25° Longitude Resolution
journal, April 2008
- Bala, G.; Rood, R. B.; Mirin, A.
- Journal of Climate, Vol. 21, Issue 7
Potential vorticity: Measuring consistency between GCM dynamical cores and tracer advection schemes: Potential Vorticity: Measuring Consistency
journal, June 2014
- Whitehead, J. P.; Jablonowski, C.; Kent, J.
- Quarterly Journal of the Royal Meteorological Society, Vol. 141, Issue 688
Reanalysis-driven climate simulation over CORDEX North America domain using the Canadian Regional Climate Model, version 5: model performance evaluation
journal, May 2013
- Martynov, A.; Laprise, R.; Sushama, L.
- Climate Dynamics, Vol. 41, Issue 11-12
Uncertainties in daily rainfall over Africa: assessment of gridded observation products and evaluation of a regional climate model simulation: UNCERTAINTIES IN OBSERVED AND SIMULATED DAILY RAINFALL OVER AFRICA
journal, July 2012
- Sylla, M. B.; Giorgi, F.; Coppola, E.
- International Journal of Climatology, Vol. 33, Issue 7
A test case for the inviscid shallow-water equations on the sphere: Inviscid Shallow-Water Equations on the Sphere
journal, November 2015
- Scott, R. K.; Harris, L. M.; Polvani, L. M.
- Quarterly Journal of the Royal Meteorological Society, Vol. 142, Issue 694
Quantitative characterization of spurious numerical oscillations in 48 CMIP5 models: SPURIOUS NUMERICAL OSCILLATIONS IN CMIP5
journal, June 2015
- Geil, Kerrie L.; Zeng, Xubin
- Geophysical Research Letters, Vol. 42, Issue 12
Evaluation of Forecasts of the Water Vapor Signature of Atmospheric Rivers in Operational Numerical Weather Prediction Models
journal, December 2013
- Wick, Gary A.; Neiman, Paul J.; Ralph, F. Martin
- Weather and Forecasting, Vol. 28, Issue 6
Reduction of the Gibbs Oscillation in Spectral Model Simulations
journal, August 1994
- Navarra, A.; Stern, W. F.; Miyakoda, K.
- Journal of Climate, Vol. 7, Issue 8
Climate extremes indices in the CMIP5 multimodel ensemble: Part 1. Model evaluation in the present climate: CLIMATE EXTREMES INDICES IN CMIP5
journal, February 2013
- Sillmann, J.; Kharin, V. V.; Zhang, X.
- Journal of Geophysical Research: Atmospheres, Vol. 118, Issue 4
Cell identification and verification of QPF ensembles using shape analysis techniques
journal, September 2007
- Micheas, Athanasios Christou; Fox, Neil I.; Lack, Steven A.
- Journal of Hydrology, Vol. 343, Issue 3-4
A Perspective on the Role of the Dynamical Core in the Development of Weather and Climate Models
book, January 2011
- Rood, Richard B.
- Numerical Techniques for Global Atmospheric Models