Search Menu
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information
Search Scholarly Publications

Title: An ensemble constrained variational analysis of atmospheric forcing data and its application to evaluate clouds in CAM5: Ensemble 3DCVA and Its Application

Journal Article · · Journal of Geophysical Research: Atmospheres
 [1];  [2];  [3]
  1. Stony Brook Univ., NY (United States). School of Marine and Atmospheric Sciences; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Stony Brook Univ., NY (United States). School of Marine and Atmospheric Sciences
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
+ Show Author Affiliations

Large-scale atmospheric forcing data can greatly impact the simulations of atmospheric process models including Large Eddy Simulations (LES), Cloud Resolving Models (CRMs) and Single-Column Models (SCMs), and impact the development of physical parameterizations in global climate models. This study describes the development of an ensemble variationally constrained objective analysis of atmospheric large-scale forcing data and its application to evaluate the cloud biases in the Community Atmospheric Model (CAM5). Sensitivities of the variational objective analysis to background data, error covariance matrix and constraint variables are described and used to quantify the uncertainties in the large-scale forcing data. Application of the ensemble forcing in the CAM5 SCM during March 2000 intensive operational period (IOP) at the Southern Great Plains (SGP) of the Atmospheric Radiation Measurement (ARM) program shows systematic biases in the model simulations that cannot be explained by the uncertainty of large-scale forcing data, which points to the deficiencies of physical parameterizations. The SCM is shown to overestimate high clouds and underestimate low clouds. These biases are found to also exist in the global simulation of CAM5 when it is compared with satellite data.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1241968
Report Number(s):
LLNL-JRNL--676588
Journal Information:
Journal of Geophysical Research: Atmospheres, Journal Name: Journal of Geophysical Research: Atmospheres Journal Issue: 1 Vol. 121; ISSN 2169-897X
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English

References (46)

Quantifying uncertainties of cloud microphysical property retrievals with a perturbation method: Cloud Uncertainty Quantification journal May 2014
Interactions between cumulus convection and its environment as revealed by the MC3E sounding array: Convection with its environment journal October 2014
Three‐dimensional constrained variational analysis: Approach and application to analysis of atmospheric diabatic heating and derivative fields during an ARM SGP intensive observational period journal August 2015
Intercomparison of model simulations of mixed-phase clouds observed during the ARM Mixed-Phase Arctic Cloud Experiment. I: single-layer cloud
  • Klein, Stephen A.; McCoy, Renata B.; Morrison, Hugh
  • Quarterly Journal of the Royal Meteorological Society, Vol. 135, Issue 641 https://doi.org/10.1002/qj.416
journal April 2009
The ERA-Interim reanalysis: configuration and performance of the data assimilation system journal April 2011
Developing long-term single-column model/cloud system–resolving model forcing data using numerical weather prediction products constrained by surface and top of the atmosphere observations journal January 2004
Evaluation of regional cloud feedbacks using single-column models journal January 2005
Comparing clouds and their seasonal variations in 10 atmospheric general circulation models with satellite measurements journal January 2005
Simulations of midlatitude frontal clouds by single-column and cloud-resolving models during the Atmospheric Radiation Measurement March 2000 cloud intensive operational period journal January 2005
Modeling springtime shallow frontal clouds with cloud-resolving and single-column models journal January 2005
Developing large-scale forcing data for single-column and cloud-resolving models from the Mixed-Phase Arctic Cloud Experiment journal January 2006
Improvements of top-of-atmosphere and surface irradiance computations with CALIPSO-, CloudSat-, and MODIS-derived cloud and aerosol properties journal January 2011
Toward understanding of differences in current cloud retrievals of ARM ground-based measurements: UNDERSTANDING CLOUD RETRIEVAL DIFFERENCE journal May 2012
Evaluation of cloud and water vapor simulations in CMIP5 climate models using NASA “A-Train” satellite observations: EVALUATION OF IPCC AR5 MODEL SIMULATIONS journal July 2012
Diagnosis of regime-dependent cloud simulation errors in CMIP5 models using “A-Train” satellite observations and reanalysis data: DIAGNOSIS OF CLOUD ERRORS FOR CMIP5 journal April 2013
The CGILS experimental design to investigate low cloud feedbacks in general circulation models by using single-column and large-eddy simulation models: DESIGN OF LOW CLOUD FEEDBACK STUDY journal April 2012
Near-real time cloud retrievals from operational and research meteorological satellites conference October 2008
Single-Column Models and Cloud Ensemble Models as Links between Observations and Climate Models journal August 1996
A Technique for Maximizing Details in Numerical Weather Map Analysis journal August 1964
Kinematic and Thermodynamic Characteristics of the Flow over the Western Pacific Warm Pool during TOGA COARE journal March 1996
Explicit Simulation of Cumulus Ensembles with the GATE Phase III Data: Comparison with Observations journal December 1996
Constrained Variational Analysis of Sounding Data Based on Column-Integrated Budgets of Mass, Heat, Moisture, and Momentum: Approach and Application to ARM Measurements journal June 1997
Cloud Resolving Modeling of the ARM Summer 1997 IOP: Model Formulation, Results, Uncertainties, and Sensitivities journal February 2003
Scale-Controlled Objective Analysis journal October 1987
A New Cloud Physics Parameterization in a Large-Eddy Simulation Model of Marine Stratocumulus journal January 2000
Objective Analysis of ARM IOP Data: Method and Sensitivity journal February 2001
An Hourly Assimilation–Forecast Cycle: The RUC journal February 2004
A New Two-Moment Bulk Stratiform Cloud Microphysics Scheme in the Community Atmosphere Model, Version 3 (CAM3). Part I: Description and Numerical Tests journal August 2008
A New Moist Turbulence Parameterization in the Community Atmosphere Model journal June 2009
The University of Washington Shallow Convection and Moist Turbulence Schemes and Their Impact on Climate Simulations with the Community Atmosphere Model journal June 2009
Tropical Cloud Heating Profiles: Analysis from KWAJEX journal November 2008
CLOUDS AND MORE: ARM Climate Modeling Best Estimate Data: A New Data Product for Climate Studies journal January 2010
Observed Large-Scale Structures and Diabatic Heating and Drying Profiles during TWP-ICE journal January 2010
The NCEP Climate Forecast System Reanalysis journal August 2010
Heating Structures of the TRMM Field Campaigns journal July 2007
MERRA: NASA’s Modern-Era Retrospective Analysis for Research and Applications journal July 2011
Evaluation of Microphysics Parameterization for Convective Clouds in the NCAR Community Atmosphere Model CAM5 journal December 2012
Evaluating Low-Cloud Simulation from an Upgraded Multiscale Modeling Framework Model. Part I: Sensitivity to Spatial Resolution and Climatology journal August 2013
Evaluating Low-Cloud Simulation from an Upgraded Multiscale Modeling Framework Model. Part II: Seasonal Variations over the Eastern Pacific journal August 2013
Evaluating Low-Cloud Simulation from an Upgraded Multiscale Modeling Framework Model. Part III: Tropical and Subtropical Cloud Transitions over the Northern Pacific journal August 2013
North American Regional Reanalysis journal March 2006
Intercomparison and evaluation of cumulus parametrizations under summertime midlatitude continental conditions journal April 2002
An intercomparison of cloud-resolving models with the Atmospheric Radiation Measurement summer 1997 Intensive Observation Period data journal January 2002
The JRA-55 Reanalysis: General Specifications and Basic Characteristics journal January 2015
Sensitivity studies of dust ice nuclei effect on cirrus clouds with the Community Atmosphere Model CAM5 journal January 2012
An intercomparison of radar-based liquid cloud microphysics retrievals and implications for model evaluation studies journal January 2012

Cited By (4)

CAUSES: On the Role of Surface Energy Budget Errors to the Warm Surface Air Temperature Error Over the Central United States journal March 2018
CAUSES: Diagnosis of the Summertime Warm Bias in CMIP5 Climate Models at the ARM Southern Great Plains Site journal March 2018
Differences in Eddy‐Correlation and Energy‐Balance Surface Turbulent Heat Flux Measurements and Their Impacts on the Large‐Scale Forcing Fields at the ARM SGP Site journal March 2019
Large-scale vertical velocity, diabatic heating and drying profiles associated with seasonal and diurnal variations of convective systems observed in the GoAmazon2014/5 experiment journal January 2016

Similar Records

Related Subjects

58 GEOSCIENCES