Publication Abstracts

Adames et al. 2017

Adames, A.F., D. Kim, A.H. Sobel, A. Del Genio, and J. Wu, 2017: Changes in the structure and propagation of the MJO with increasing CO2. J. Adv. Model. Earth Syst., 9, no. 2, 1251-1268, doi:10.1002/2017MS000913.

Changes in the Madden-Julian Oscillation (MJO) with increasing CO2 concentrations are examined using the Goddard Institute for Space Studies Global Climate Model (GCM). Four simulations performed with fixed CO2 concentrations of 0.5, 1, 2, and 4 times preindustrial levels using the GCM coupled with a mixed layer ocean model are analyzed in terms of the basic state, rainfall, moisture and zonal wind variability, and the structure and propagation of the MJO. The GCM simulates basic state changes associated with increasing CO2 that are consistent with results from earlier studies: column water vapor increases at ∼7.1%/K, precipitation also increases but at a lower rate (∼3%/K), and column relative humidity shows little change. Moisture and rainfall variability intensify with warming while zonal wind variability shows little change. Total moisture and rainfall variability increases at a rate this is similar to that of the mean state change. The intensification is faster in the MJO-related anomalies than in the total anomalies, though the ratio of the MJO band variability to its westward counterpart increases at a much slower rate. On the basis of linear regression analysis and space-time spectral analysis, it is found that the MJO exhibits faster eastward propagation, faster westward energy dispersion, a larger zonal scale, and deeper vertical structure in warmer climates.

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BibTeX Citation

  author={Adames, A. F. and Kim, D. and Sobel, A. H. and Del Genio, A. and Wu, J.},
  title={Changes in the structure and propagation of the MJO with increasing CO2},
  journal={J. Adv. Model. Earth Syst.},

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RIS Citation

ID  - ad00100k
AU  - Adames, A. F.
AU  - Kim, D.
AU  - Sobel, A. H.
AU  - Del Genio, A.
AU  - Wu, J.
PY  - 2017
TI  - Changes in the structure and propagation of the MJO with increasing CO2
JA  - J. Adv. Model. Earth Syst.
VL  - 9
IS  - 2
SP  - 1251
EP  - 1268
DO  - 10.1002/2017MS000913
ER  -

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