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RISThe El Niño Impact on the Summer Monsoon in Brazil: Regional Processes versus Remote Influences
Publisher: American Meteorological Society
Abstract: The El Niño impact on Brazil's summer monsoon has not been adequately assessed through seasonal analysis because it shows significant subseasonal variations. In this study, the El Niño influence on the summer monsoon ...
Interannual Variability and Seasonal Evolution of Summer Monsoon Rainfall in South America
Publisher: American Meteorological Society
Abstract: The analysis of the interannual variability of the South American monsoon rainfall is carried out separately for austral spring and summer (and for November and January), based on a 40-yr station gauge dataset. Relationships ...
ENSO and Extreme Rainfall Events in South America
Publisher: American Meteorological Society
Abstract: The influence of the opposite phases of ENSO on the frequency of extreme rainfall events over South America is analyzed for each month of the ENSO cycle on the basis of a large set of daily station rainfall data and compared ...
Analysis of Tropical–Extratropical Interactions with Influence Functions of a Barotropic Model
Publisher: American Meteorological Society
Abstract: Influence functions (IFs) of a linear barotropic vorticity equation model are computed in order to determine the regions in which anomalous divergence at upper levels, related to tropical heating anomalies, has the largest ...
Does the South American Monsoon Influence African Rainfall?
Publisher: American Meteorological Society
Abstract: Teleconnections between the South American monsoon and southern African rainfall are investigated for years with Benguela Niño or Niña events in the South Atlantic. During these events, it is found that substantial rainfall ...
Interdecadal Variability of the South American Precipitation in the Monsoon Season
Publisher: American Meteorological Society
Abstract: nterdecadal variability modes of monsoon precipitation over South America (SA) are provided by a continental-scale rotated empirical orthogonal function analysis, and their connections to well-known climatic indices and ...
Intraseasonal Teleconnections between South America and South Africa
Publisher: American Meteorological Society
Abstract: eleconnection of climate anomalies between various parts of the tropics and extratropics is a well-established feature of the climate system. Building on previous work showing that a teleconnection exists between the South ...
ENSO Modulation of Global MJO and Its Impacts on South America
Publisher: American Meteorological Society
Precipitation Anomalies in Southern Brazil Associated with El Niño and La Niña Events
Publisher: American Meteorological Society
Abstract: The impact of El Niño and La Niña events (warm and cold phases of the Southern Oscillation) on rainfall over southern Brazil is investigated through the use of a large dataset of monthly precipitation from 250 stations. ...
Climate Variability in Southern South America Associated with El Niño and La Niña Events
Publisher: American Meteorological Society
Abstract: A comprehensive view is given of the precipitation and circulation anomalies associated with the various stages of El Niño (EN) and La Niña (LN) events all over southern South America (SSA). This view comprises the delineation ...