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A Deep Learning Filter for the Intraseasonal Variability of the Tropics
Artificial Intelligence for the Earth Systems, 2023Abstract This paper presents a novel application of convolutional neural network (CNN) models for filtering the intraseasonal variability of the tropical atmosphere. In this deep learning filter, two convolutional layers are applied sequentially in a supervised machine learning framework to extract the intraseasonal signal from the total daily ...
Cristiana Stan +1 more
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Tropical intraseasonal rainfall variability in the CFSR
Climate Dynamics, 2011While large-scale circulation fields from atmospheric reanalyses have been widely used to study the tropical intraseasonal variability, rainfall variations from the reanalyses are less focused. Because of the sparseness of in situ observations available in the tropics and strong coupling between convection and large-scale circulation, the accuracy of ...
Jiande Wang +3 more
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Aspects of interanual and intraseasonal variability of the tropopause and lower stratosphere
Quarterly Journal of the Royal Meteorological Society, 2001AbstractRadiosonde and National Centers for Environmental Prediction/National Center for Atmospheric Research reanalysis data are utilized to consider aspects of large‐scale variability in tropopause height, temperature and pressure. This variability is related to coherent dynamical fluctuations in the troposphere and lower stratosphere through the use
G. N. Kiladis +3 more
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Interannual and Intraseasonal Variability in the Southern Hemisphere
1998The aim of this chapter is to examine the temporal and spatial variability of the troposphere over the Southern Hemisphere and, in the case of El Nino/Southern Oscillation, link it to fluctuations in the tropical oceans as well. In the time since the first volume on Southern Hemisphere meteorology appeared in 1972, it has been possible to examine in ...
George N. Kiladis, Kingtse C. Mo
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Synoptic to Intraseasonal Variability of African Rainfall
2020Rainfall over Africa varies across timescales of a few days to several weeks due to several tropical and extratropical modes of variability. Excessive rains or prolonged drought regularly result in natural disasters and have thus a severe impact on the local economy, agriculture, spread of diseases, and entire ecosystems.
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The Nonnormal Nature of El Niño and Intraseasonal Variability
Journal of Climate, 1999Abstract The idea that intraseasonal variability in the tropical west Pacific can act as an effective means of stochastically forcing ENSO episodes is explored. Using the ideas of generalized linear stability theory as they apply to nonnormal dynamical systems, the physical attributes of the coupled ocean–atmosphere system in the Tropics that allow ...
Andrew M. Moore, Richard Kleeman
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Variability of seasonal-mean fields arising from intraseasonal variability: part 1, methodology
Climate Dynamics, 2004Xue Zheng, C S Frederiksen
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