Subseasonal Earth System Prediction with CESM2
Abstract
Abstract Prediction systems to enable Earth system predictability research on the subseasonal time scale have been developed with the Community Earth System Model, version 2 (CESM2) using two configurations that differ in their atmospheric components. One system uses the Community Atmosphere Model, version 6 (CAM6) with its top near 40 km, referred to as CESM2(CAM6). The other employs the Whole Atmosphere Community Climate Model, version 6 (WACCM6) whose top extends to ∼140 km, and it includes fully interactive tropospheric and stratospheric chemistry [CESM2(WACCM6)]. Both systems are utilized to carry out subseasonal reforecasts for the 1999–2020 period following the Subseasonal Experiment’s (SubX) protocol. Subseasonal prediction skill from both systems is compared to those of the National Oceanic and Atmospheric Administration CFSv2 and European Centre for Medium-Range Weather Forecasts (ECMWF) operational models. CESM2(CAM6) and CESM2(WACCM6) show very similar subseasonal prediction skill of 2-m temperature, precipitation, the Madden–Julian oscillation, and North Atlantic Oscillation to its previous version and to the NOAA CFSv2 model. Overall, skill of CESM2(CAM6) and CESM2(WACCM6) is a little lower than that of the ECMWF system. In addition to typical output provided by subseasonal prediction systems, CESM2 reforecasts provide comprehensive datasets for predictability research of multiple Earth system components, includingmore »
- Authors:
-
[1];
- a Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, Colorado
- b Atmospheric Chemistry Observations and Modeling Laboratory, National Center for Atmospheric Research, Boulder, Colorado
- c Mesoscale and Microscale Meteorology Laboratory, National Center for Atmospheric Research, Boulder, Colorado
- d School of Marine and Atmospheric Sciences, Stony Brook University, State University of New York, Stony Brook, New York
- e High Altitude Observatory, National Center for Atmospheric Research, Boulder, Colorado
- f Colorado State University, Fort Collins, Colorado
- c Mesoscale and Microscale Meteorology Laboratory, National Center for Atmospheric Research, Boulder, Colorado, a Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, Colorado
- Publication Date:
- Research Org.:
- University Corporation for Atmospheric Research (UCAR), Boulder, CO (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1869489
- Alternate Identifier(s):
- OSTI ID: 1922840
- Grant/Contract Number:
- IA1844590; 89243018SSC000007
- Resource Type:
- Published Article
- Journal Name:
- Weather and Forecasting
- Additional Journal Information:
- Journal Name: Weather and Forecasting Journal Volume: 37 Journal Issue: 6; Journal ID: ISSN 0882-8156
- Publisher:
- American Meteorological Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES
Citation Formats
Richter, Jadwiga H., Glanville, Anne A., Edwards, James, Kauffman, Brian, Davis, Nicholas A., Jaye, Abigail, Kim, Hyemi, Pedatella, Nicholas M., Sun, Lantao, Berner, Judith, Kim, Who M., Yeager, Stephen G., Danabasoglu, Gokhan, Caron, Julie M., and Oleson, Keith W. Subseasonal Earth System Prediction with CESM2. United States: N. p., 2022.
Web. doi:10.1175/WAF-D-21-0163.1.
Richter, Jadwiga H., Glanville, Anne A., Edwards, James, Kauffman, Brian, Davis, Nicholas A., Jaye, Abigail, Kim, Hyemi, Pedatella, Nicholas M., Sun, Lantao, Berner, Judith, Kim, Who M., Yeager, Stephen G., Danabasoglu, Gokhan, Caron, Julie M., & Oleson, Keith W. Subseasonal Earth System Prediction with CESM2. United States. https://doi.org/10.1175/WAF-D-21-0163.1
Richter, Jadwiga H., Glanville, Anne A., Edwards, James, Kauffman, Brian, Davis, Nicholas A., Jaye, Abigail, Kim, Hyemi, Pedatella, Nicholas M., Sun, Lantao, Berner, Judith, Kim, Who M., Yeager, Stephen G., Danabasoglu, Gokhan, Caron, Julie M., and Oleson, Keith W. Wed .
"Subseasonal Earth System Prediction with CESM2". United States. https://doi.org/10.1175/WAF-D-21-0163.1.
@article{osti_1869489,
title = {Subseasonal Earth System Prediction with CESM2},
author = {Richter, Jadwiga H. and Glanville, Anne A. and Edwards, James and Kauffman, Brian and Davis, Nicholas A. and Jaye, Abigail and Kim, Hyemi and Pedatella, Nicholas M. and Sun, Lantao and Berner, Judith and Kim, Who M. and Yeager, Stephen G. and Danabasoglu, Gokhan and Caron, Julie M. and Oleson, Keith W.},
abstractNote = {Abstract Prediction systems to enable Earth system predictability research on the subseasonal time scale have been developed with the Community Earth System Model, version 2 (CESM2) using two configurations that differ in their atmospheric components. One system uses the Community Atmosphere Model, version 6 (CAM6) with its top near 40 km, referred to as CESM2(CAM6). The other employs the Whole Atmosphere Community Climate Model, version 6 (WACCM6) whose top extends to ∼140 km, and it includes fully interactive tropospheric and stratospheric chemistry [CESM2(WACCM6)]. Both systems are utilized to carry out subseasonal reforecasts for the 1999–2020 period following the Subseasonal Experiment’s (SubX) protocol. Subseasonal prediction skill from both systems is compared to those of the National Oceanic and Atmospheric Administration CFSv2 and European Centre for Medium-Range Weather Forecasts (ECMWF) operational models. CESM2(CAM6) and CESM2(WACCM6) show very similar subseasonal prediction skill of 2-m temperature, precipitation, the Madden–Julian oscillation, and North Atlantic Oscillation to its previous version and to the NOAA CFSv2 model. Overall, skill of CESM2(CAM6) and CESM2(WACCM6) is a little lower than that of the ECMWF system. In addition to typical output provided by subseasonal prediction systems, CESM2 reforecasts provide comprehensive datasets for predictability research of multiple Earth system components, including three-dimensional output for many variables, and output specific to the mesosphere and lower-thermosphere (MLT) region from CESM2(WACCM6). It is shown that sudden stratosphere warming events, and the associated variability in the MLT, can be predicted ∼10 days in advance. Weekly real-time forecasts and reforecasts with CESM2(CAM6) and CESM2(WACCM6) are freely available. Significance Statement We describe here the design and prediction skill of two subseasonal prediction systems based on two configurations of the Community Earth System Model, version 2 (CESM2): CESM2 with the Community Atmosphere Model, version 6 [CESM2(CAM6)] and CESM 2 with Whole Atmosphere Community Climate Model, version 6 [CESM2(WACCM6)] as its atmospheric component. These two systems provide a foundation for community-model based subseasonal prediction research. The CESM2(WACCM6) system provides a novel capability to explore the predictability of the stratosphere, mesosphere, and lower thermosphere. Both CESM2(CAM6) and CESM2(WACCM6) demonstrate subseasonal surface prediction skill comparable to that of the NOAA CFSv2 model, and a little lower than that of the ECMWF forecasting system. CESM2 reforecasts provide a comprehensive dataset for predictability research of multiple aspects of the Earth system, including the whole atmosphere up to 140 km, land, and sea ice. Weekly real-time forecasts, reforecasts, and models are publicly available.},
doi = {10.1175/WAF-D-21-0163.1},
journal = {Weather and Forecasting},
number = 6,
volume = 37,
place = {United States},
year = {Wed Jun 01 00:00:00 EDT 2022},
month = {Wed Jun 01 00:00:00 EDT 2022}
}
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