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Title: Intercomparison of MJO Column Moist Static Energy and Water Vapor Budget among Six Modern Reanalysis Products

Abstract

This study conducts an intercomparison of the column-integrated moist static energy (MSE) and water vapor budget of the Madden–Julian oscillation (MJO) among six modern global reanalysis products (RAs). Inter-RA differences in the mean MSE, MJO MSE anomalies, individual MSE budget terms, and their relative contributions to the propagation and maintenance of MJO MSE anomalies are examined. Also investigated is the relationship between the MJO column water vapor (CWV) budget residuals with the other CWV budget terms as well as with the two parameters that characterize cloud–radiation feedback and moisture–convection coupling. Results show a noticeable inter-RA spread in the mean-state MSE, especially its vertical structure. In all RAs, horizontal MSE advection dominates the propagation of the MJO MSE while column-integrated longwave radiative heating and vertical MSE advection are found to be the key processes for MJO maintenance. The MSE budget terms directly affected by the model parameterization schemes exhibit high uncertainty. The differences in anomalous vertical velocity mainly contribute to the large differences in vertical MSE advection among the RAs. The budget residuals show large inter-RA differences and have nonnegligible contributions to MJO maintenance and propagation in most RAs. RAs that underestimate (overestimate) the strength of cloud–radiation feedback and the convectivemore » moisture adjustment time scale tend to have positive (negative) MJO CWV budget residual, indicating the critical role of these processes in the maintenance of MJO CWV anomalies. Our results emphasize that a correct representation of the interactions among moisture, convection, cloud, and radiation is the key for an accurate depiction of the MJO MSE and CWV budget in RAs.« less

Authors:
 [1];  [2];  [3];  [2];  [4]
  1. Chinese Academy of Meteorological Sciences, Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China); China Meteorological Administration, Beijing (China)
  2. Univ. of Washington, Seattle, WA (United States)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  4. Chinese Academy of Meteorological Sciences, Beijing (China); China Meteorological Administration, Beijing (China)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of Washington, Seattle, WA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Emergency Operations; USDOE Office of Science (SC), Biological and Environmental Research (BER). Earth and Environmental Systems Science Division; National Natural Science Foundation of China (NSFC); National Oceanic and Atmospheric Administration (NOAA); National Aeronautics and Space Administration (NASA); Korea Meteorological Administration (KMA)
OSTI Identifier:
1773585
Alternate Identifier(s):
OSTI ID: 1908818
Report Number(s):
LLNL-JRNL-814433
Journal ID: ISSN 0894-8755; 1021866
Grant/Contract Number:  
AC52-07NA27344; SC0016223; 41775066; NA18OAR4310300; 80NSSC17K0227; KMI2018-03110; SC0019495
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Climate
Additional Journal Information:
Journal Volume: 34; Journal Issue: 8; Journal ID: ISSN 0894-8755
Publisher:
American Meteorological Society
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; Madden-Julian oscillation; moisture/moisture budget; reanalysis data

Citation Formats

Ren, Pengfei, Kim, Daehyun, Ahn, Min-Seop, Kang, Daehyun, and Ren, Hong-Li. Intercomparison of MJO Column Moist Static Energy and Water Vapor Budget among Six Modern Reanalysis Products. United States: N. p., 2021. Web. doi:10.1175/jcli-d-20-0653.1.
Ren, Pengfei, Kim, Daehyun, Ahn, Min-Seop, Kang, Daehyun, & Ren, Hong-Li. Intercomparison of MJO Column Moist Static Energy and Water Vapor Budget among Six Modern Reanalysis Products. United States. https://doi.org/10.1175/jcli-d-20-0653.1
Ren, Pengfei, Kim, Daehyun, Ahn, Min-Seop, Kang, Daehyun, and Ren, Hong-Li. Fri . "Intercomparison of MJO Column Moist Static Energy and Water Vapor Budget among Six Modern Reanalysis Products". United States. https://doi.org/10.1175/jcli-d-20-0653.1. https://www.osti.gov/servlets/purl/1773585.
@article{osti_1773585,
title = {Intercomparison of MJO Column Moist Static Energy and Water Vapor Budget among Six Modern Reanalysis Products},
author = {Ren, Pengfei and Kim, Daehyun and Ahn, Min-Seop and Kang, Daehyun and Ren, Hong-Li},
abstractNote = {This study conducts an intercomparison of the column-integrated moist static energy (MSE) and water vapor budget of the Madden–Julian oscillation (MJO) among six modern global reanalysis products (RAs). Inter-RA differences in the mean MSE, MJO MSE anomalies, individual MSE budget terms, and their relative contributions to the propagation and maintenance of MJO MSE anomalies are examined. Also investigated is the relationship between the MJO column water vapor (CWV) budget residuals with the other CWV budget terms as well as with the two parameters that characterize cloud–radiation feedback and moisture–convection coupling. Results show a noticeable inter-RA spread in the mean-state MSE, especially its vertical structure. In all RAs, horizontal MSE advection dominates the propagation of the MJO MSE while column-integrated longwave radiative heating and vertical MSE advection are found to be the key processes for MJO maintenance. The MSE budget terms directly affected by the model parameterization schemes exhibit high uncertainty. The differences in anomalous vertical velocity mainly contribute to the large differences in vertical MSE advection among the RAs. The budget residuals show large inter-RA differences and have nonnegligible contributions to MJO maintenance and propagation in most RAs. RAs that underestimate (overestimate) the strength of cloud–radiation feedback and the convective moisture adjustment time scale tend to have positive (negative) MJO CWV budget residual, indicating the critical role of these processes in the maintenance of MJO CWV anomalies. Our results emphasize that a correct representation of the interactions among moisture, convection, cloud, and radiation is the key for an accurate depiction of the MJO MSE and CWV budget in RAs.},
doi = {10.1175/jcli-d-20-0653.1},
journal = {Journal of Climate},
number = 8,
volume = 34,
place = {United States},
year = {Fri Mar 12 00:00:00 EST 2021},
month = {Fri Mar 12 00:00:00 EST 2021}
}

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