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Title: The GFDL Global Atmosphere and Land Model AM4.0/LM4.0: 1. Simulation Characteristics With Prescribed SSTs

Journal Article · · Journal of Advances in Modeling Earth Systems
DOI:https://doi.org/10.1002/2017MS001208· OSTI ID:1438743
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  1. GFDL/NOAA, Princeton, NJ (United States)
  2. GFDL/NOAA, Princeton, NJ (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. UCAR/GFDL, Princeton, NJ (United States)
  4. Princeton Univ., Princeton, NJ (United States)
  5. U.S. Geological Survey, Princeton, NJ (United States)
  6. Engility Corporation/GFDL, Princeton, NJ (United States)
  7. GFDL/NOAA, Princeton, NJ (United States); U. S. Geological Survey, Princeton, NJ (United States)
  8. NASA Ames Research Center, Moffett Field, CA (United States)

In this two–part paper, a description is provided of a version of the AM4.0/LM4.0 atmosphere/land model that will serve as a base for a new set of climate and Earth system models (CM4 and ESM4) under development at NOAA's Geophysical Fluid Dynamics Laboratory (GFDL). This version, with roughly 100 km horizontal resolution and 33 levels in the vertical, contains an aerosol model that generates aerosol fields from emissions and a “light” chemistry mechanism designed to support the aerosol model but with prescribed ozone. In Part 1, the quality of the simulation in AMIP (Atmospheric Model Intercomparison Project) mode—with prescribed sea surface temperatures (SSTs) and sea–ice distribution—is described and compared with previous GFDL models and with the CMIP5 archive of AMIP simulations. Here, the model's Cess sensitivity (response in the top–of–atmosphere radiative flux to uniform warming of SSTs) and effective radiative forcing are also presented. In Part 2, the model formulation is described more fully and key sensitivities to aspects of the model formulation are discussed, along with the approach to model tuning.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1438743
Report Number(s):
LLNL-JRNL-736689
Journal Information:
Journal of Advances in Modeling Earth Systems, Vol. 10, Issue 3; ISSN 1942-2466
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 154 works
Citation information provided by
Web of Science

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Subseasonal Week 3–5 Surface Air Temperature Prediction During Boreal Wintertime in a GFDL Model journal January 2019
Investigation of the global methane budget over 1980–2017 using GFDL-AM4.1 journal January 2020
Theories for Past and Future Monsoon Rainfall Changes journal June 2019
Sensitivity of Ozone Dry Deposition to Ecosystem‐Atmosphere Interactions: A Critical Appraisal of Observations and Simulations journal October 2019
Explicit Prediction of Continental Convection in a Skillful Variable‐Resolution Global Model journal June 2019
Sensitivity of Radiative‐Convection Equilibrium to Divergence Damping in GFDL‐FV3‐Based Cloud‐Resolving Model Simulations journal July 2018
Improved Surface Layer Simulation Using Refined Vertical Resolution in the GFDL Atmospheric General Circulation Model journal April 2019
Exploring the relationship between surface PM2.5 and meteorology in Northern India journal January 2018
Retrieving the global distribution of the threshold of wind erosion from satellite data and implementing it into the Geophysical Fluid Dynamics Laboratory land–atmosphere model (GFDL AM4.0/LM4.0) journal January 2020
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