skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Assessment of marine boundary layer cloud simulations in the CAM with CLUBB and updated microphysics scheme based on ARM observations from the Azores

Abstract

To assess marine boundary layer (MBL) cloud simulations in three versions of the Community Atmosphere Model (CAM), three sets of short-term global hindcasts are performed and compared to Atmospheric Radiation Measurement Program (ARM) observations on Graciosa Island in the Azores from June 2009 to December 2010. Here, the three versions consist of CAM5.3 with default schemes (CAM5.3), CAM5.3 with Cloud Layers Unified By Binormals (CLUBB-MG1), and CAM5.3 with CLUBB and updated microphysics scheme (CLUBB-MG2). Our results show that relative to CAM5.3 default schemes, simulations with CLUBB better represent MBL cloud base height, the height of the major cloud layer, and the daily cloud cover variability. CLUBB also better simulates the relationship of cloud fraction to cloud liquid water path (LWP) most likely due to CLUBB's consistent treatment of these variables through a probability distribution function (PDF) approach. Subcloud evaporation of precipitation is substantially enhanced in simulations with CLUBB-MG2 and is more realistic based on the limited observational estimate. Despite these improvements, all model versions underestimate MBL cloud cover. CLUBB-MG2 reduces biases in in-cloud LWP (clouds are not too bright) but there are still too few of MBL clouds due to an underestimate in the frequency of overcast scenes. Thus, combiningmore » CLUBB with MG2 scheme better simulates MBL cloud processes, but because biases remain in MBL cloud cover CLUBB-MG2 does not improve the simulation of the surface shortwave cloud radiative effect (CRESW).« less

Authors:
 [1];  [1];  [1];  [2];  [2];  [3]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. National Center for Atmospheric Research, Boulder, CO (United States)
  3. Univ. of Wisconsin, Milwaukee, WI (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1342072
Alternate Identifier(s):
OSTI ID: 1402239
Report Number(s):
LLNL-JRNL-680743
Journal ID: ISSN 2169-897X
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Geophysical Research: Atmospheres
Additional Journal Information:
Journal Volume: 121; Journal Issue: 14; Journal ID: ISSN 2169-897X
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES

Citation Formats

Zheng, Xue, Klein, S. A., Ma, H. -Y., Bogenschutz, P., Gettelman, A., and Larson, V. E. Assessment of marine boundary layer cloud simulations in the CAM with CLUBB and updated microphysics scheme based on ARM observations from the Azores. United States: N. p., 2016. Web. doi:10.1002/2016JD025274.
Zheng, Xue, Klein, S. A., Ma, H. -Y., Bogenschutz, P., Gettelman, A., & Larson, V. E. Assessment of marine boundary layer cloud simulations in the CAM with CLUBB and updated microphysics scheme based on ARM observations from the Azores. United States. doi:10.1002/2016JD025274.
Zheng, Xue, Klein, S. A., Ma, H. -Y., Bogenschutz, P., Gettelman, A., and Larson, V. E. Tue . "Assessment of marine boundary layer cloud simulations in the CAM with CLUBB and updated microphysics scheme based on ARM observations from the Azores". United States. doi:10.1002/2016JD025274. https://www.osti.gov/servlets/purl/1342072.
@article{osti_1342072,
title = {Assessment of marine boundary layer cloud simulations in the CAM with CLUBB and updated microphysics scheme based on ARM observations from the Azores},
author = {Zheng, Xue and Klein, S. A. and Ma, H. -Y. and Bogenschutz, P. and Gettelman, A. and Larson, V. E.},
abstractNote = {To assess marine boundary layer (MBL) cloud simulations in three versions of the Community Atmosphere Model (CAM), three sets of short-term global hindcasts are performed and compared to Atmospheric Radiation Measurement Program (ARM) observations on Graciosa Island in the Azores from June 2009 to December 2010. Here, the three versions consist of CAM5.3 with default schemes (CAM5.3), CAM5.3 with Cloud Layers Unified By Binormals (CLUBB-MG1), and CAM5.3 with CLUBB and updated microphysics scheme (CLUBB-MG2). Our results show that relative to CAM5.3 default schemes, simulations with CLUBB better represent MBL cloud base height, the height of the major cloud layer, and the daily cloud cover variability. CLUBB also better simulates the relationship of cloud fraction to cloud liquid water path (LWP) most likely due to CLUBB's consistent treatment of these variables through a probability distribution function (PDF) approach. Subcloud evaporation of precipitation is substantially enhanced in simulations with CLUBB-MG2 and is more realistic based on the limited observational estimate. Despite these improvements, all model versions underestimate MBL cloud cover. CLUBB-MG2 reduces biases in in-cloud LWP (clouds are not too bright) but there are still too few of MBL clouds due to an underestimate in the frequency of overcast scenes. Thus, combining CLUBB with MG2 scheme better simulates MBL cloud processes, but because biases remain in MBL cloud cover CLUBB-MG2 does not improve the simulation of the surface shortwave cloud radiative effect (CRESW).},
doi = {10.1002/2016JD025274},
journal = {Journal of Geophysical Research: Atmospheres},
number = 14,
volume = 121,
place = {United States},
year = {2016},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

The Transpose-AMIP II Experiment and Its Application to the Understanding of Southern Ocean Cloud Biases in Climate Models
journal, May 2013


Marine boundary layer clouds at the heart of tropical cloud feedback uncertainties in climate models
journal, January 2005


The vertical distribution of cloud feedback in coupled ocean-atmosphere models: VERTICAL DISTRIBUTION OF CLOUD FEEDBACK
journal, June 2011

  • Soden, Brian J.; Vecchi, Gabriel A.
  • Geophysical Research Letters, Vol. 38, Issue 12
  • DOI: 10.1029/2011GL047632

Marine Boundary Layer Cloud Observations in the Azores
journal, November 2012


The Impact of Low Clouds on Surface Shortwave Radiation in the ECMWF Model
journal, November 2012


Contributions of Different Cloud Types to Feedbacks and Rapid Adjustments in CMIP5
journal, July 2013


Toward a minimal representation of aerosols in climate models: description and evaluation in the Community Atmosphere Model CAM5
journal, January 2012

  • Liu, X.; Easter, R. C.; Ghan, S. J.
  • Geoscientific Model Development, Vol. 5, Issue 3
  • DOI: 10.5194/gmd-5-709-2012

Surface summertime radiative forcing by shallow cumuli at the Atmospheric Radiation Measurement Southern Great Plains site
journal, January 2011

  • Berg, Larry K.; Kassianov, Evgueni I.; Long, Charles N.
  • Journal of Geophysical Research, Vol. 116, Issue D1
  • DOI: 10.1029/2010JD014593

Breaking the Cloud Parameterization Deadlock
journal, November 2003

  • Randall, David; Khairoutdinov, Marat; Arakawa, Akio
  • Bulletin of the American Meteorological Society, Vol. 84, Issue 11
  • DOI: 10.1175/BAMS-84-11-1547

Clouds, Aerosols, and Precipitation in the Marine Boundary Layer: An Arm Mobile Facility Deployment
journal, March 2015

  • Wood, Robert; Wyant, Matthew; Bretherton, Christopher S.
  • Bulletin of the American Meteorological Society, Vol. 96, Issue 3
  • DOI: 10.1175/BAMS-D-13-00180.1

The ‘too few, too bright’ tropical low-cloud problem in CMIP5 models: TOO FEW TOO BRIGHT LOW-CLOUDS
journal, November 2012

  • Nam, C.; Bony, S.; Dufresne, J. -L.
  • Geophysical Research Letters, Vol. 39, Issue 21
  • DOI: 10.1029/2012GL053421

The Dynamical Core, Physical Parameterizations, and Basic Simulation Characteristics of the Atmospheric Component AM3 of the GFDL Global Coupled Model CM3
journal, July 2011

  • Donner, Leo J.; Wyman, Bruce L.; Hemler, Richard S.
  • Journal of Climate, Vol. 24, Issue 13
  • DOI: 10.1175/2011JCLI3955.1

A Climatology of Surface Cloud Radiative Effects at the ARM Tropical Western Pacific Sites
journal, April 2013

  • McFarlane, Sally A.; Long, Charles N.; Flaherty, Julia
  • Journal of Applied Meteorology and Climatology, Vol. 52, Issue 4
  • DOI: 10.1175/JAMC-D-12-0189.1

Global simulations of ice nucleation and ice supersaturation with an improved cloud scheme in the Community Atmosphere Model
journal, January 2010

  • Gettelman, A.; Liu, X.; Ghan, S. J.
  • Journal of Geophysical Research, Vol. 115, Issue D18
  • DOI: 10.1029/2009JD013797

Advanced Two-Moment Bulk Microphysics for Global Models. Part II: Global Model Solutions and Aerosol–Cloud Interactions
journal, February 2015


Cloud Regime Variability over the Azores and Its Application to Climate Model Evaluation
journal, December 2015


Small-Scale and Mesoscale Variability in Cloudy Boundary Layers: Joint Probability Density Functions
journal, December 2002


Effects of Convective Momentum Transport on the Atmospheric Circulation in the Community Atmosphere Model, Version 3
journal, April 2008


Outlook for Research on Subtropical Marine Stratification Clouds
journal, December 1984


Integrating Cloud Processes in the Community Atmosphere Model, Version 5
journal, September 2014

  • Park, Sungsu; Bretherton, Christopher S.; Rasch, Philip J.
  • Journal of Climate, Vol. 27, Issue 18
  • DOI: 10.1175/JCLI-D-14-00087.1

Role of convective scale momentum transport in climate simulation
journal, January 1995

  • Zhang, Guang Jun; McFarlane, Norman A.
  • Journal of Geophysical Research: Atmospheres, Vol. 100, Issue D1
  • DOI: 10.1029/94JD02519

The Impact of Convection on ENSO: From a Delayed Oscillator to a Series of Events
journal, November 2008

  • Neale, Richard B.; Richter, Jadwiga H.; Jochum, Markus
  • Journal of Climate, Vol. 21, Issue 22
  • DOI: 10.1175/2008JCLI2244.1

A Climatology of Midlatitude Continental Clouds from the ARM SGP Central Facility. Part II: Cloud Fraction and Surface Radiative Forcing
journal, May 2006

  • Dong, Xiquan; Xi, Baike; Minnis, Patrick
  • Journal of Climate, Vol. 19, Issue 9
  • DOI: 10.1175/JCLI3710.1

Marine boundary layer structure and fractional cloudiness
journal, January 1995

  • Albrecht, Bruce A.; Jensen, Michael P.; Syrett, William J.
  • Journal of Geophysical Research, Vol. 100, Issue D7
  • DOI: 10.1029/95JD00827

Southeast Pacific Stratocumulus in the Community Atmosphere Model
journal, September 2012

  • Medeiros, Brian; Williamson, David L.; Hannay, Cécile
  • Journal of Climate, Vol. 25, Issue 18
  • DOI: 10.1175/JCLI-D-11-00503.1

Global and regional modeling of clouds and aerosols in the marine boundary layer during VOCALS: the VOCA intercomparison
journal, January 2015

  • Wyant, M. C.; Bretherton, C. S.; Wood, R.
  • Atmospheric Chemistry and Physics, Vol. 15, Issue 1
  • DOI: 10.5194/acp-15-153-2015

A New Moist Turbulence Parameterization in the Community Atmosphere Model
journal, June 2009


The ERA-Interim reanalysis: configuration and performance of the data assimilation system
journal, April 2011

  • Dee, D. P.; Uppala, S. M.; Simmons, A. J.
  • Quarterly Journal of the Royal Meteorological Society, Vol. 137, Issue 656
  • DOI: 10.1002/qj.828

Distribution and Radiative Forcing of Tropical Thin Cirrus Clouds
journal, December 2009

  • Lee, Joonsuk; Yang, Ping; Dessler, Andrew E.
  • Journal of the Atmospheric Sciences, Vol. 66, Issue 12
  • DOI: 10.1175/2009JAS3183.1

Atmospheric component of the MPI-M Earth System Model: ECHAM6: ECHAM6
journal, April 2013

  • Stevens, Bjorn; Giorgetta, Marco; Esch, Monika
  • Journal of Advances in Modeling Earth Systems, Vol. 5, Issue 2
  • DOI: 10.1002/jame.20015

Evaluation of Forecasted Southeast Pacific Stratocumulus in the NCAR, GFDL, and ECMWF Models
journal, June 2009

  • Hannay, Cécile; Williamson, David L.; Hack, James J.
  • Journal of Climate, Vol. 22, Issue 11
  • DOI: 10.1175/2008JCLI2479.1

Radiation Profiles in Extended Water Clouds. II: Parameterization Schemes
journal, November 1978


The North Pacific Oxygen Uptake Rates over the Past Half Century
journal, January 2016


Dispelling Clouds of Uncertainty
journal, June 2015


Improving the Representation of Low Clouds and Drizzle in the ECMWF Model Based on ARM Observations from the Azores
journal, February 2014


Higher-Order Turbulence Closure and Its Impact on Climate Simulations in the Community Atmosphere Model
journal, December 2013

  • Bogenschutz, Peter A.; Gettelman, Andrew; Morrison, Hugh
  • Journal of Climate, Vol. 26, Issue 23
  • DOI: 10.1175/JCLI-D-13-00075.1

Evaluating Parameterizations in General Circulation Models: Climate Simulation Meets Weather Prediction
journal, December 2004

  • Phillips, Thomas J.; Potter, Gerald L.; Williamson, David L.
  • Bulletin of the American Meteorological Society, Vol. 85, Issue 12
  • DOI: 10.1175/BAMS-85-12-1903

Thin Liquid Water Clouds: Their Importance and Our Challenge
journal, February 2007

  • Turner, D. D.; Vogelmann, A. M.; Austin, R. T.
  • Bulletin of the American Meteorological Society, Vol. 88, Issue 2
  • DOI: 10.1175/BAMS-88-2-177

On the Correspondence between Mean Forecast Errors and Climate Errors in CMIP5 Models
journal, February 2014


Stratocumulus Clouds
journal, August 2012


Variability of Cloud Vertical Structure during ASTEX Observed from a Combination of Rawinsonde, Radar, Ceilometer, and Satellite
journal, October 1999


Advanced Two-Moment Bulk Microphysics for Global Models. Part I: Off-Line Tests and Comparison with Other Schemes
journal, February 2015


Albedo bias and the horizontal variability of clouds in subtropical marine boundary layers: Observations from ships and satellites
journal, March 1999

  • Pincus, Robert; McFarlane, Sally A.; Klein, Stephen A.
  • Journal of Geophysical Research: Atmospheres, Vol. 104, Issue D6
  • DOI: 10.1029/1998JD200125

An improved hindcast approach for evaluation and diagnosis of physical processes in global climate models: AN IMPROVED HINDCAST APPROACH
journal, November 2015

  • Ma, H. -Y.; Chuang, C. C.; Klein, S. A.
  • Journal of Advances in Modeling Earth Systems, Vol. 7, Issue 4
  • DOI: 10.1002/2015MS000490

Tropical and Subtropical Cloud Transitions in Weather and Climate Prediction Models: The GCSS/WGNE Pacific Cross-Section Intercomparison (GPCI)
journal, October 2011


Development and evaluation of an Earth-system model – HadGEM2
journal, January 2011

  • Collins, W. J.; Bellouin, N.; Doutriaux-Boucher, M.
  • Geoscientific Model Development Discussions, Vol. 4, Issue 2
  • DOI: 10.5194/gmdd-4-997-2011

Evaluation of two cloud parametrization schemes using ARM and Cloud-Net observations
journal, November 2011

  • Morcrette, Cyril J.; O'Connor, Ewan J.; Petch, Jon C.
  • Quarterly Journal of the Royal Meteorological Society, Vol. 138, Issue 665
  • DOI: 10.1002/qj.969

The Effect of Cloud Type on Earth's Energy Balance: Global Analysis
journal, November 1992


The Atmospheric Radiation Measurement Program Cloud Profiling Radars: Second-Generation Sampling Strategies, Processing, and Cloud Data Products
journal, July 2007

  • Kollias, Pavlos; Miller, Mark A.; Luke, Edward P.
  • Journal of Atmospheric and Oceanic Technology, Vol. 24, Issue 7
  • DOI: 10.1175/JTECH2033.1

The behavior of trade-wind cloudiness in observations and models: The major cloud components and their variability: Observed and modeled trade-wind clouds
journal, April 2015

  • Nuijens, Louise; Medeiros, Brian; Sandu, Irina
  • Journal of Advances in Modeling Earth Systems, Vol. 7, Issue 2
  • DOI: 10.1002/2014MS000390