Intraseasonal Rainfall Variability over Madagascar

Intraseasonal and Interannual Variability of Rainfall over India

A gridded daily rainfall dataset prepared from observations at 3700 stations is used to analyze the intraseasonal and interannual variability of the summer monsoon rainfall over India. It is found that the major drought years are characterized by large-scale negative rainfall anomalies covering nearly all of India and persisting for the entire monsoon season. The intraseasonal variability of ra...

Stochastic modeling of daily summertime rainfall over the southwestern U.S. Part II: intraseasonal variability

Decadal change in intraseasonal variability over the South China Sea

[1] Evidence is presented to reveal a decadal change around mid-1990s in the behavior of intraseasonal variability (ISV) over the South China Sea (SCS). During 1979–1993, the ISV has a spectral peak around 64 days, which is longer than in the recent epoch of 1994–2007 (around 42 days). The ISV event in 1979–1993 involves a merging process of the northward and westward propagating convection ano...

Intraseasonal variability in the Makassar Strait thermocline

Intraseasonal variability [ISV] in the Makassar Strait thermocline is examined through the analysis of along-channel flow, regional sea level anomaly and wind fields from January 2004 through November 2006. The dominant variability of 45–90 day in the Makassar Strait along-channel flow is horizontally and vertically coherent and exhibits vertical energy propagation. The majority of the Makassar...

TRMM Observations of Intraseasonal Variability in Convective Regimes Over the Amazon By

This study utilizes TRMM satellite precipitation radar, lightning imaging sensor, and passive microwave imager data together with ground-based lightning data to investigate the vertical structure, lightning, and rainfall characteristics of Amazonian and sub-tropical South American convection for three separate wet-seasons. These characteristics are partitioned as a function of 850 mb zonal wind...