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

Title: Intraseasonal, Seasonal, and Interannual Characteristics of Regional Monsoon Simulations in CESM2

Journal Article · · Journal of Advances in Modeling Earth Systems
DOI:https://doi.org/10.1029/2019MS001962· OSTI ID:1633330
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2];  [3]; ORCiD logo [1]
  1. National Center for Atmospheric Research Boulder CO USA
  2. National Center for Atmospheric Research Boulder CO USA, ARC Centre of Excellence for Climate ExtremesMonash University Melbourne Victoria Australia
  3. IPRC/Department of OceanographyUniversity of Hawaii at Manoa Honolulu HI USA
+ Show Author Affiliations

A survey of intraseasonal, seasonal, and interannual precipitation and 850 hPa winds for various monsoon regimes around the world is presented for the Community Earth System Model Version 2 (CESM2) compared to observations and the previous generation CESM1. In CESM2 the south Asian monsoon has a reduction of excessive precipitation in the western Indian Ocean and an increase of precipitation in the eastern Bay of Bengal and land areas of Vietnam, Cambodia, and Laos. The seasonal timing of the south Asian monsoon, monsoon-ENSO connections, and monsoon intraseasonal variability all are improved compared to CESM1. For the Australian monsoon, deficient precipitation over the Maritime Continent has been improved in CESM2 with increases of precipitation over the large tropical islands of Borneo, Celebes, and Papua New Guinea and decreases over southwestern Australia. In the West African monsoon, May–June seasonal rainfall occurs more preferentially over the African coast in CESM2 as in observations, and excessive rainfall over the Ethiopian region is reduced. During July–September in the West African monsoon, deficient precipitation over equatorial Africa in CESM1 has been lessened in CESM2, and there are increases in precipitation over the Guinean coast, though there is little overall improvement in the South African monsoon. In the South American monsoon, precipitation in CESM2 is improved with increased precipitation over the Amazon in central and western Brazil. CESM2 simulates a reduction of excessive precipitation seen in CESM1 over coastal Mexico extending up into the U.S. Great Plains in the North American monsoon.

Research Organization:
University Corporation for Atmospheric Research, Boulder, CO (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); National Science Foundation (NSF)
Grant/Contract Number:
89243018SSC000007; 1852977; 1460742; Office of Biological & amp; Environmental Research (BER) via National Science Foundation IA 1947282
OSTI ID:
1633330
Alternate ID(s):
OSTI ID: 1670782; OSTI ID: 1785984; OSTI ID: 1786713
Journal Information:
Journal of Advances in Modeling Earth Systems, Journal Name: Journal of Advances in Modeling Earth Systems Vol. 12 Journal Issue: 6; ISSN 1942-2466
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

References (40)

Systematic Errors in South Asian Monsoon Precipitation: Process-Based Diagnostics and Sensitivity to Entrainment in NCAR Models journal April 2020
The Community Earth System Model: A Framework for Collaborative Research journal September 2013
Evidence of Secular Variations in Indian Monsoon Rainfall–Circulation Relationships journal September 1991
The path to CAM6: coupled simulations with CAM5.4 and CAM5.5 journal January 2018
Regional Heat Sources and the Active and Break Phases of Boreal Summer Intraseasonal (30–50 Day) Variability* journal August 2005
The global climatology of an interannually varying air–sea flux data set journal August 2008
Description and evaluation of a new four-mode version of the Modal Aerosol Module (MAM4) within version 5.3 of the Community Atmosphere Model journal January 2016
Toward a Consistent Reanalysis of the Climate System journal August 2014
Future changes in regional precipitation simulated by a half-degree coupled climate model: Sensitivity to horizontal resolution: PRECIPITATION IN HALF-DEGREE CCSM4 journal June 2016
Role of Troposphere-Convection-Land Coupling in the Southwestern Amazon Precipitation Bias of the Community Earth System Model Version 1 (CESM1) journal August 2018
Systematic Errors in South Asian Monsoon Simulation: Importance of Equatorial Indian Ocean Processes journal September 2017
Characteristics of northward propagating intraseasonal oscillation in the Indian summer monsoon journal May 2018
A PDF-Based Model for Boundary Layer Clouds. Part I: Method and Model Description journal December 2002
Monsoon Regimes in the CCSM3 journal June 2006
Moist Dynamics of Severe Monsoons over South Asia: Role of the Tropical SST* journal January 2012
Coupled model simulations of boreal summer intraseasonal (30–50 day) variability, Part 1: Systematic errors and caution on use of metrics journal February 2008
Effects of Model Resolution, Physics, and Coupling on Southern Hemisphere Storm Tracks in CESM1.3 journal November 2019
ENSO and Pacific Decadal Variability in the Community Climate System Model Version 4 journal April 2012
Observations of the 40–50-Day Tropical Oscillation—A Review journal May 1994
An Evaluation of the Large‐Scale Atmospheric Circulation and Its Variability in CESM2 and Other CMIP Models journal June 2020
Cloudiness Fluctuations Associated with the Northern Hemisphere Summer Monsoon [北半球夏季モンスーン時における雲量変動の解析] journal January 1979
Sensitivity of climate simulations to the parameterization of cumulus convection in the Canadian climate centre general circulation model journal September 1995
ENSO and Pacific Decadal Variability in the Community Earth System Model Version 2 journal December 2020
The South Asian Summer Monsoon and Its Relationship with ENSO in the IPCC AR4 Simulations journal March 2007
Observational Evaluation of a Convective Quasi-Equilibrium View of Monsoons journal August 2010
The Asian summer monsoon: an intercomparison of CMIP5 vs. CMIP3 simulations of the late 20th century journal December 2012
Advanced Two-Moment Bulk Microphysics for Global Models. Part I: Off-Line Tests and Comparison with Other Schemes journal February 2015
Monsoon Regimes and Processes in CCSM4. Part I: The Asian–Australian Monsoon journal April 2012
Monsoon Regimes and Processes in CCSM4. Part II: African and American Monsoon Systems journal April 2012
A new parametrization of turbulent orographic form drag
  • Beljaars, Anton C. M.; Brown, Andrew R.; Wood, Nigel
  • Quarterly Journal of the Royal Meteorological Society, Vol. 130, Issue 599 https://doi.org/10.1256/qj.03.73
journal April 2004
Model performance metrics and process diagnostics for boreal summer intraseasonal variability journal May 2016
MJO and Convectively Coupled Equatorial Waves Simulated by CMIP5 Climate Models journal September 2013
The Community Earth System Model Version 2 (CESM2) journal February 2020
An Indian monsoon intraseasonal oscillations (MISO) index for real time monitoring and forecast verification journal July 2012
The Impact of Convection on ENSO: From a Delayed Oscillator to a Series of Events journal November 2008
The Community Earth System Model (CESM) Large Ensemble Project: A Community Resource for Studying Climate Change in the Presence of Internal Climate Variability journal August 2015
Impact of the Indian Ocean dipole on the relationship between the Indian monsoon rainfall and ENSO journal December 2001
Global summer monsoon rainy seasons journal October 2008
Simulation of boreal summer intraseasonal oscillations in the latest CMIP5 coupled GCMs: SIMULATION OF BSISO IN THE CMIP5 MODELS journal May 2013
The TRMM Multisatellite Precipitation Analysis (TMPA): Quasi-Global, Multiyear, Combined-Sensor Precipitation Estimates at Fine Scales journal February 2007

Figures / Tables (17)

Figure 1(p. 40)figure Figure 1
Figure 2(p. 41)figure Figure 2
Figure 3(p. 42)figure Figure 3
Figure 4(p. 43)figure Figure 4
Figure 5(p. 44)figure Figure 5
Figure 6(p. 45)figure Figure 6
Figure 7(p. 46)figure Figure 7
Figure 8(p. 47)figure Figure 8
Figure 9(p. 48)figure Figure 9
Figure 10(p. 49)figure Figure 10
Figure 11(p. 50)figure Figure 11
Figure 12(p. 51)figure Figure 12
Figure 13(p. 52)figure Figure 13
Figure 14(p. 53)figure Figure 14
Figure 15(p. 54)figure Figure 15
Table 1(p. 55)table Table 1
Table 1 (Continued)(p. 56)table Table 1 (Continued)

Similar Records

Persistence of systematic errors in the Asian-Australian monsoon precipitation basic states in climate models: a way forward
Technical Report · Wed Nov 05 00:00:00 EST 2014 · OSTI ID:1633330
+5 more
Climate Base State Influences on South Asian Monsoon Processes Derived From Analyses of E3SMv2 and CESM2
Journal Article · Tue Sep 12 00:00:00 EDT 2023 · Geophysical Research Letters · OSTI ID:1633330
+8 more
A Long-term Regional Simulation and Observations of the Hydroclimate in China
Journal Article · Tue Jul 24 00:00:00 EDT 2007 · Journal of Geophysical Research. D. (Atmospheres), 112 · OSTI ID:1633330

Related Subjects

58 GEOSCIENCES
global coupled Earth system modeling
Asian‐Australian monsoon
west African monsoon
north American monsoon
south American monsoon