Vertical structure and physical processes of the Madden-Julian Oscillation: Biases and uncertainties at short range
Abstract
We present an analysis of diabatic heating and moistening processes from 12 to 36 h lead time forecasts from 12 Global Circulation Models as part of the “Vertical structure and physical processes of the Madden-Julian Oscillation (MJO)” project. A lead time of 12–36 h is chosen to constrain the large-scale dynamics and thermodynamics to be close to observations while avoiding being too close to the initial spin-up of the models as they adjust to being driven from the Years of Tropical Convection (YOTC) analysis. A comparison of the vertical velocity and rainfall with the observations and YOTC analysis suggests that the phases of convection associated with the MJO are constrained in most models at this lead time although the rainfall in the suppressed phase is typically overestimated. Although the large-scale dynamics is reasonably constrained, moistening and heating profiles have large intermodel spread. In particular, there are large spreads in convective heating and moistening at midlevels during the transition to active convection. Radiative heating and cloud parameters have the largest relative spread across models at upper levels during the active phase. A detailed analysis of time step behavior shows that some models show strong intermittency in rainfall and differences in themore »
- Authors:
-
- Met Office, Exeter (United Kingdom)
- Univ. of Reading, Reading (United Kingdom). National Centre for Atmospheric Science-Climate
- California Inst. of Technology (CalTech), Pasadena, CA (United States). Jet Propulsion Lab.
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena California USA
- Swedish Meteorological and Hydrological Institute, Norrkoping (Sweden). Rossby Centre
- Environment Canada, Victoria British Columbia (Canada). Canadian Centre for Climate Modelling and Analysis
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- National Center for Atmospheric Research, Boulder, CO (United States)
- Univ. of Washington, Seattle, WA (United States). Dept. of Atmospheric Sciences,
- Japan Agency for Marine-Earth Science and Technology, Yokosuka (Japan). Research Institute for Global Change
- Univ. of California, Irvine, CA (United States). Dept. of Earth System Sciences
- CNRM-GAME, Meteo-France and CNRS, Toulouse (France)
- Meteorological Research Institute, Ibaraki (Japan). Dept. of Climate Research
- European Center for Medium-Range Weather Forecasts, Reading (United Kingdom)
- NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
- Publication Date:
- Research Org.:
- Univ. of California, Irvine, CA (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States); California Inst. of Technology (CalTech), Pasadena, CA (United States). Jet Propulsion Lab.
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER); National Science Foundation (NSF); National Aeronautic and Space Administration (NASA)
- OSTI Identifier:
- 1252214
- Grant/Contract Number:
- GA01101; AGS-1228302; NA12OAR4310075; NNX13AM18G; CATER 2013-3142; ATM-0425247; OCI-1053575; TG-ATM120034
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Journal of Geophysical Research: Atmospheres
- Additional Journal Information:
- Journal Volume: 120; Journal Issue: 10; Journal ID: ISSN 2169-897X
- Publisher:
- American Geophysical Union
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; diabatic processes; Madden-Julian Oscillation; modeling; convection; Year of Tropical convection; uncertainties
Citation Formats
Xavier, Prince K., Petch, Jon C., Klingaman, Nicholas P., Woolnough, Steve J., Jiang, Xianan, Waliser, Duane E., Caian, Mihaela, Cole, Jason, Hagos, Samson M., Hannay, Cecile, Kim, Daehyun, Miyakawa, Tomoki, Pritchard, Michael S., Roehrig, Romain, Shindo, Eiki, Vitart, Frederic, and Wang, Hailan. Vertical structure and physical processes of the Madden-Julian Oscillation: Biases and uncertainties at short range. United States: N. p., 2015.
Web. doi:10.1002/2014JD022718.
Xavier, Prince K., Petch, Jon C., Klingaman, Nicholas P., Woolnough, Steve J., Jiang, Xianan, Waliser, Duane E., Caian, Mihaela, Cole, Jason, Hagos, Samson M., Hannay, Cecile, Kim, Daehyun, Miyakawa, Tomoki, Pritchard, Michael S., Roehrig, Romain, Shindo, Eiki, Vitart, Frederic, & Wang, Hailan. Vertical structure and physical processes of the Madden-Julian Oscillation: Biases and uncertainties at short range. United States. https://doi.org/10.1002/2014JD022718
Xavier, Prince K., Petch, Jon C., Klingaman, Nicholas P., Woolnough, Steve J., Jiang, Xianan, Waliser, Duane E., Caian, Mihaela, Cole, Jason, Hagos, Samson M., Hannay, Cecile, Kim, Daehyun, Miyakawa, Tomoki, Pritchard, Michael S., Roehrig, Romain, Shindo, Eiki, Vitart, Frederic, and Wang, Hailan. Tue .
"Vertical structure and physical processes of the Madden-Julian Oscillation: Biases and uncertainties at short range". United States. https://doi.org/10.1002/2014JD022718. https://www.osti.gov/servlets/purl/1252214.
@article{osti_1252214,
title = {Vertical structure and physical processes of the Madden-Julian Oscillation: Biases and uncertainties at short range},
author = {Xavier, Prince K. and Petch, Jon C. and Klingaman, Nicholas P. and Woolnough, Steve J. and Jiang, Xianan and Waliser, Duane E. and Caian, Mihaela and Cole, Jason and Hagos, Samson M. and Hannay, Cecile and Kim, Daehyun and Miyakawa, Tomoki and Pritchard, Michael S. and Roehrig, Romain and Shindo, Eiki and Vitart, Frederic and Wang, Hailan},
abstractNote = {We present an analysis of diabatic heating and moistening processes from 12 to 36 h lead time forecasts from 12 Global Circulation Models as part of the “Vertical structure and physical processes of the Madden-Julian Oscillation (MJO)” project. A lead time of 12–36 h is chosen to constrain the large-scale dynamics and thermodynamics to be close to observations while avoiding being too close to the initial spin-up of the models as they adjust to being driven from the Years of Tropical Convection (YOTC) analysis. A comparison of the vertical velocity and rainfall with the observations and YOTC analysis suggests that the phases of convection associated with the MJO are constrained in most models at this lead time although the rainfall in the suppressed phase is typically overestimated. Although the large-scale dynamics is reasonably constrained, moistening and heating profiles have large intermodel spread. In particular, there are large spreads in convective heating and moistening at midlevels during the transition to active convection. Radiative heating and cloud parameters have the largest relative spread across models at upper levels during the active phase. A detailed analysis of time step behavior shows that some models show strong intermittency in rainfall and differences in the precipitation and dynamics relationship between models. In conclusion, the wealth of model outputs archived during this project is a very valuable resource for model developers beyond the study of the MJO. Additionally, the findings of this study can inform the design of process model experiments, and inform the priorities for field experiments and future observing systems.},
doi = {10.1002/2014JD022718},
url = {https://www.osti.gov/biblio/1252214},
journal = {Journal of Geophysical Research: Atmospheres},
issn = {2169-897X},
number = 10,
volume = 120,
place = {United States},
year = {2015},
month = {5}
}
Web of Science
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Works referencing / citing this record:
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journal, July 2004
- Moncrieff, Mitchell W.
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Advances in simulating atmospheric variability with the ECMWF model: From synoptic to decadal time-scales
journal, July 2008
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Parameter Modulation of Madden-Julian Oscillation Behaviors in BCC_CSM1.2: The Key Role of Moisture-Shallow Convection Feedback
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Vertical structure and physical processes of the Madden-Julian oscillation: Synthesis and summary: MJO PHYSICAL PROCESSES: SYNTHESIS
journal, May 2015
- Klingaman, Nicholas P.; Jiang, Xianan; Xavier, Prince K.
- Journal of Geophysical Research: Atmospheres, Vol. 120, Issue 10
Understanding advances in the simulation of intraseasonal variability in the ECMWF model. Part II: The application of process-based diagnostics
journal, November 2012
- Hirons, L. C.; Inness, P.; Vitart, F.
- Quarterly Journal of the Royal Meteorological Society, Vol. 139, Issue 675
Potential predictability and extended range prediction of Indian summer monsoon breaks: PREDICTABILITY OF MONSOON BREAKS
journal, September 2003
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Observed Characteristics of the MJO Relative to Maximum Rainfall
journal, July 2007
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Structural Evolution in Heating Profiles of the MJO in Global Reanalyses and TRMM Retrievals
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Parameter Modulation of Madden-Julian Oscillation Behaviors in BCC_CSM1.2: The Key Role of Moisture-Shallow Convection Feedback
journal, May 2019
- Huang, Kai; Ren, Hong-Li; Liu, Xiangwen
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Vertical structure and physical processes of the Madden-Julian oscillation: Linking hindcast fidelity to simulated diabatic heating and moistening: DIABATIC PROCESSES IN MJO HINDCASTS
journal, May 2015
- Klingaman, Nicholas P.; Woolnough, Steven J.; Jiang, Xianan
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Influence of cloud-radiation interaction on simulating tropical intraseasonal oscillation with an atmospheric general circulation model
journal, July 2001
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Modelling suppressed and active convection. Comparing a numerical weather prediction, cloud-resolving and single-column model
journal, January 2007
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