Underestimated MJO Variability in CMIP6 Models
Underestimated MJO Variability in CMIP6 Models
复制标题
CMIP6 模型中低估的 MJO 变异性
DOI:
10.1029/2020gl092244
复制
发表时间:
2021
影响因子:
5.2
通讯作者:
Foufoula‐Georgiou, Efi
中科院分区:
文献类型:
--
作者:
Le, Phong V. V.;Guilloteau, Clément;Mamalakis, Antonios;Foufoula‐Georgiou, Efi
The Madden‐Julian Oscillation (MJO) is the leading mode of intraseasonal climate variability, having profound impacts on a wide range of weather and climate phenomena. Here, we use a wavelet‐based spectral Principal Component Analysis (wsPCA) to evaluate the skill of 20 state‐of‐the‐art CMIP6 models in capturing the magnitude and dynamics of the MJO. By construction, wsPCA has the ability to focus on desired frequencies and capture each propagative physical mode with one principal component (PC). We show that the MJO contribution to the total intraseasonal climate variability is substantially underestimated in most CMIP6 models. The joint distribution of the modulus and angular frequency of the wavelet PC series associated with MJO is used to rank models relatively to the observations through the Wasserstein distance. Using Hovmöller phase‐longitude diagrams, we also show that precipitation variability associated with MJO is underestimated in most CMIP6 models for the Amazonia, Southwest Africa, and Maritime Continent.
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DOI:
--
发表时间:
2019
期刊:
影响因子:
--
作者:
H. Soliman;A. Simon;G. Tóth;H. Duddeck
通讯作者:
H. Duddeck
影响因子:
5.1
作者:
Eyring, Veronika;Bony, Sandrine;Taylor, Karl E.
通讯作者:
Taylor, Karl E.
影响因子:
4.9
作者:
Sossa, Awolou;Liebmann, Brant;Bladé, Ileana;Allured, Dave;Hendon, Harry H.;Peterson, Pete;Hoell, Andrew
通讯作者:
Hoell, Andrew
影响因子:
5.2
作者:
S. Taraphdar;Fuqing Zhang;L. Leung;Xingchao Chen;O. Pauluis
通讯作者:
S. Taraphdar;Fuqing Zhang;L. Leung;Xingchao Chen;O. Pauluis
影响因子:
4.9
作者:
C. Orbe;Luke P. van Roekel;Á. Adames;A. Dezfuli;J. Fasullo;P. Gleckler;Jiwoo Lee;Wei Li;L. Nazarenko;G. Schmidt;K. Sperber;Ming Zhao
通讯作者:
Ming Zhao