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

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.
Authors:
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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)
Publication Date:
Report Number(s):
LLNL-JRNL-736689
Journal ID: ISSN 1942-2466
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Journal of Advances in Modeling Earth Systems
Additional Journal Information:
Journal Volume: 10; Journal Issue: 3; Journal ID: ISSN 1942-2466
Publisher:
American Geophysical Union (AGU)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 58 GEOSCIENCES
OSTI Identifier:
1438743

Zhao, Ming, Golaz, J. -C., Held, I. M., Guo, H., Balaji, V., Benson, R., Chen, J. -H., Chen, X., Donner, L. J., Dunne, J. P., Dunne, K., Durachta, J., Fan, S. -M., Freidenreich, S. M., Garner, S. T., Ginoux, P., Harris, L. M., Horowitz, L. W., Krasting, J. P., Langenhorst, A. R., Liang, Z., Lin, P., Lin, S. -J., Malyshev, S. L., Mason, E., Milly, P. C. D., Ming, Y., Naik, V., Paulot, F., Paynter, D., Phillipps, P., Radhakrishnan, A., Ramaswamy, V., Robinson, T., Schwarzkopf, D., Seman, C. J., Shevliakova, E., Shen, Z., Shin, H., Silvers, L. G., Wilson, J. R., Winton, M., Wittenberg, A. T., Wyman, B., and Xiang, B.. The GFDL Global Atmosphere and Land Model AM4.0/LM4.0: 1. Simulation Characteristics With Prescribed SSTs. United States: N. p., Web. doi:10.1002/2017MS001208.
Zhao, Ming, Golaz, J. -C., Held, I. M., Guo, H., Balaji, V., Benson, R., Chen, J. -H., Chen, X., Donner, L. J., Dunne, J. P., Dunne, K., Durachta, J., Fan, S. -M., Freidenreich, S. M., Garner, S. T., Ginoux, P., Harris, L. M., Horowitz, L. W., Krasting, J. P., Langenhorst, A. R., Liang, Z., Lin, P., Lin, S. -J., Malyshev, S. L., Mason, E., Milly, P. C. D., Ming, Y., Naik, V., Paulot, F., Paynter, D., Phillipps, P., Radhakrishnan, A., Ramaswamy, V., Robinson, T., Schwarzkopf, D., Seman, C. J., Shevliakova, E., Shen, Z., Shin, H., Silvers, L. G., Wilson, J. R., Winton, M., Wittenberg, A. T., Wyman, B., & Xiang, B.. The GFDL Global Atmosphere and Land Model AM4.0/LM4.0: 1. Simulation Characteristics With Prescribed SSTs. United States. doi:10.1002/2017MS001208.
Zhao, Ming, Golaz, J. -C., Held, I. M., Guo, H., Balaji, V., Benson, R., Chen, J. -H., Chen, X., Donner, L. J., Dunne, J. P., Dunne, K., Durachta, J., Fan, S. -M., Freidenreich, S. M., Garner, S. T., Ginoux, P., Harris, L. M., Horowitz, L. W., Krasting, J. P., Langenhorst, A. R., Liang, Z., Lin, P., Lin, S. -J., Malyshev, S. L., Mason, E., Milly, P. C. D., Ming, Y., Naik, V., Paulot, F., Paynter, D., Phillipps, P., Radhakrishnan, A., Ramaswamy, V., Robinson, T., Schwarzkopf, D., Seman, C. J., Shevliakova, E., Shen, Z., Shin, H., Silvers, L. G., Wilson, J. R., Winton, M., Wittenberg, A. T., Wyman, B., and Xiang, B.. 2018. "The GFDL Global Atmosphere and Land Model AM4.0/LM4.0: 1. Simulation Characteristics With Prescribed SSTs". United States. doi:10.1002/2017MS001208. https://www.osti.gov/servlets/purl/1438743.
@article{osti_1438743,
title = {The GFDL Global Atmosphere and Land Model AM4.0/LM4.0: 1. Simulation Characteristics With Prescribed SSTs},
author = {Zhao, Ming and Golaz, J. -C. and Held, I. M. and Guo, H. and Balaji, V. and Benson, R. and Chen, J. -H. and Chen, X. and Donner, L. J. and Dunne, J. P. and Dunne, K. and Durachta, J. and Fan, S. -M. and Freidenreich, S. M. and Garner, S. T. and Ginoux, P. and Harris, L. M. and Horowitz, L. W. and Krasting, J. P. and Langenhorst, A. R. and Liang, Z. and Lin, P. and Lin, S. -J. and Malyshev, S. L. and Mason, E. and Milly, P. C. D. and Ming, Y. and Naik, V. and Paulot, F. and Paynter, D. and Phillipps, P. and Radhakrishnan, A. and Ramaswamy, V. and Robinson, T. and Schwarzkopf, D. and Seman, C. J. and Shevliakova, E. and Shen, Z. and Shin, H. and Silvers, L. G. and Wilson, J. R. and Winton, M. and Wittenberg, A. T. and Wyman, B. and Xiang, B.},
abstractNote = {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.},
doi = {10.1002/2017MS001208},
journal = {Journal of Advances in Modeling Earth Systems},
number = 3,
volume = 10,
place = {United States},
year = {2018},
month = {2}
}