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RISA Climatology of Northern Hemisphere Blocking
Publisher: American Meteorological Society
Abstract: In this paper a 55-yr (1948?2002) Northern Hemisphere blocking climatology is presented. Traditional blocking indices and methodologies are revised and a new blocking detection method is designed. This algorithm detects ...
Multidecadal Variability of the Summer Length in Europe
Publisher: American Meteorological Society
Abstract: his study analyzes the multidecadal variability of the European summer timing and length. The dates of the summer onset and end are computed through an objective algorithm based on locally defined temperature thresholds ...
Comparing Sudden Stratospheric Warming Definitions in Reanalysis Data
Publisher: American Meteorological Society
Abstract: udden stratospheric warmings (SSWs) are characterized by a pronounced increase of the stratospheric polar temperature during the winter season. Different definitions have been used in the literature to diagnose the occurrence ...
The Use of Spanish Historical Archives to Reconstruct Climate Variability
Publisher: American Meteorological Society
Abstract: Spanish historical archives contain a vast store of information about Spain and its former colonies in America and Asia. Some searches for climate-related information within these archives have been undertaken recently, ...
The Great Louisiana Hurricane of August 1812
Publisher: American Meteorological Society
Abstract: Major hurricanes are prominent meteorological hazards of the U.S. Atlantic and Gulf coasts. However, the official modern record of Atlantic basin tropical cyclones starts at 1851, and it does not provide a comprehensive ...
The Hidden Role of Women in Monitoring Nineteenth-Century African Weather: Instrumental Observations in Equatorial Guinea
Publisher: American Meteorological Society
Abstract: Some of the first systematic meteorological observations in Africa were made by two women in Equatorial Guinea in 1875. Sisters Isabel and Juliana Urquiola, together with Manuel Iradier, Isabel's husband, built a meteorological ...
Understanding Precipitation Changes in Iberia in Early Spring: Weather Typing and Storm-Tracking Approaches
Publisher: American Meteorological Society
Abstract: March monthly accumulated precipitation in the central and western regions of the Iberian Peninsula presents a clear continuous decline of 50% during the 1960?97 period. A finer analysis using daily data reveals that this ...
Tracking the Indian Summer Monsoon Onset Back to the Preinstrument Period
Publisher: American Meteorological Society
Abstract: he Indian summer monsoon onset is one of the most expected meteorological events of the world, affecting the lives of hundreds of millions of people. The India Meteorological Department has dated the monsoon onset since ...
A New Combined Detection Algorithm for Blocking and Subtropical Ridges
Publisher: American Meteorological Society
Euro-Atlantic Atmospheric Circulation during the Late Maunder Minimum
Publisher: American Meteorological Society
Abstract: AbstractThis paper presents observational evidence of the atmospheric circulation during the Late Maunder Minimum (LMM, 1685?1715) based on daily wind direction observations from ships in the English Channel. Four wind ...