An Overview of the Atmospheric Component of the Energy Exascale Earth System Model
| Autor: | Yun Qian, Xiaohong Liu, Robert Jacob, L. R. Leung, Wuyin Lin, Salil Mahajan, Hailong Wang, David C. Bader, Jadwiga H. Richter, Cecile Hannay, Mark Flanner, Andrew G. Salinger, Po-Lun Ma, Susannah M. Burrows, Mark A. Taylor, S. A. Klein, Jean-Christophe Golaz, Jin-Ho Yoon, Kai Zhang, Katherine J. Evans, Erika Louise Roesler, R. B. Neale, Noel Keen, Manish Shrivastava, Vincent E. Larson, Julio T. Bacmeister, Balwinder Singh, Marcia L. Branstetter, Qi Tang, Azamat Mametjanov, L. Brent, Philip Cameron-Smith, Peter M. Caldwell, Hui Wan, Yang Yang, P. J. Rasch, James G. Foucar, Bryce E. Harrop, Shaocheng Xie, Charles S. Zender, Yuying Zhang, Richard C. Easter |
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| Rok vydání: | 2019 |
| Předmět: |
010504 meteorology & atmospheric sciences
atmospheric model Atmospheric model 010502 geochemistry & geophysics Atmospheric sciences 01 natural sciences Atmospheric Sciences Troposphere lcsh:Oceanography Ozone layer Environmental Chemistry lcsh:GC1-1581 Stratosphere climate lcsh:Physical geography climate modeling Earth system Physics::Atmospheric and Oceanic Physics 0105 earth and related environmental sciences Physics Global and Planetary Change general circulation modeling Snowpack Aerosol Earth system science Climate Action climate change General Earth and Planetary Sciences Climate model lcsh:GB3-5030 |
| Zdroj: | Journal of Advances in Modeling Earth Systems, vol 11, iss 8 Journal of Advances in Modeling Earth Systems, Vol 11, Iss 8, Pp 2377-2411 (2019) |
| Popis: | Author(s): Rasch, PJ; Xie, S; Ma, PL; Lin, W; Wang, H; Tang, Q; Burrows, SM; Caldwell, P; Zhang, K; Easter, RC; Cameron-Smith, P; Singh, B; Wan, H; Golaz, JC; Harrop, BE; Roesler, E; Bacmeister, J; Larson, VE; Evans, KJ; Qian, Y; Taylor, M; Leung, LR; Zhang, Y; Brent, L; Branstetter, M; Hannay, C; Mahajan, S; Mametjanov, A; Neale, R; Richter, JH; Yoon, JH; Zender, CS; Bader, D; Flanner, M; Foucar, JG; Jacob, R; Keen, N; Klein, SA; Liu, X; Salinger, AG; Shrivastava, M; Yang, Y | Abstract: The Energy Exascale Earth System Model Atmosphere Model version 1, the atmospheric component of the Department of Energy's Energy Exascale Earth System Model is described. The model began as a fork of the well-known Community Atmosphere Model, but it has evolved in new ways, and coding, performance, resolution, physical processes (primarily cloud and aerosols formulations), testing and development procedures now differ significantly. Vertical resolution was increased (from 30 to 72 layers), and the model top extended to 60 km (~0.1 hPa). A simple ozone photochemistry predicts stratospheric ozone, and the model now supports increased and more realistic variability in the upper troposphere and stratosphere. An optional improved treatment of light-absorbing particle deposition to snowpack and ice is available, and stronger connections with Earth system biogeochemistry can be used for some science problems. Satellite and ground-based cloud and aerosol simulators were implemented to facilitate evaluation of clouds, aerosols, and aerosol-cloud interactions. Higher horizontal and vertical resolution, increased complexity, and more predicted and transported variables have increased the model computational cost and changed the simulations considerably. These changes required development of alternate strategies for tuning and evaluation as it was not feasible to “brute force” tune the high-resolution configurations, so short-term hindcasts, perturbed parameter ensemble simulations, and regionally refined simulations provided guidance on tuning and parameterization sensitivity to higher resolution. A brief overview of the model and model climate is provided. Model fidelity has generally improved compared to its predecessors and the CMIP5 generation of climate models. |
| Databáze: | OpenAIRE |
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