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Atmospheric classifications and synoptic climatology
  • Atmospheric classifications and synoptic climatology
  • Atmospheric circulation ; Classification ; England ; Synoptic climatology ; United Kingdom ; Weather type
  • Circulation atmosphérique ; Classification ; Climatologie synoptique ; England ; Royaume-Uni ; Type de temps
  • Methods of classifying the atmospheric circulation into pressure patterns or types are reviewed. These classifications are divided into three main categories according to the system of classification used by climatologists. The advantages
  • and limitations of each classification approach are discussed.
Synoptic weather-map classification : correlation versus sums-of-squares
  • Synoptic weather-map classification : correlation versus sums-of-squares
  • Classification ; Climatologie ; Climatologie synoptique ; Corrélation ; Géographie physique
Using a spatial synoptic climatological classification to assess changes in atmospheric pollution concentrations
  • Using a spatial synoptic climatological classification to assess changes in atmospheric pollution concentrations
  • The goal of this research is to demonstrate the potential of a newly developed spatial synoptic climatological classification to assess changes in atmospheric pollution concentrations in nine U.S. cities. The procedure divides the United States
  • into homogeneous regions on the basis of surface synoptic weather data. The resulting categories are then related to metropolitan-scale pollution concentrations. Thus, it becomes possible to determine the characteristics of those synoptic situations associated
Synoptic and surface climatology interactions in the Central Canadian Subarctic : normal and El Niño seasons
  • Synoptic and surface climatology interactions in the Central Canadian Subarctic : normal and El Niño seasons
  • Canada ; Classification ; Cold area ; El Niño ; Evaporation ; Precipitation ; Seasonal variation ; Snow ; Subarctic zone ; Synoptic climatology ; Thematic mapping ; Vegetation dynamics ; Weather type ; Years 1990-99
  • Années 1990 ; Canada ; Cartographie thématique ; Classification ; Climatologie synoptique ; Dynamique de la végétation ; El Niño ; Evaporation ; Neige ; Précipitation ; Type de temps ; Variation saisonnière ; Zone froide ; Zone subarctique
  • An objective hybrid classification of daily surface weather maps for Churchill, Manitoba, was used to determine the dominant synoptic conditions during the snowmelt and snow-free periods for the Canadian central subarctic. This classification
  • yielded different dominant synoptic types for the two normal (1996, 1997) and one El Niño (EN), (1998), seasons. The synoptic patterns that emerged were then related to the precipitation and surface evaporation regimes of a subarctic sedge fen typical
A comparison of synoptic classification schemes based on objective procedures
  • A comparison of synoptic classification schemes based on objective procedures
  • Années 1973-1982 ; Arctique ; Circulation atmosphérique ; Classification objective ; Climatologie synoptique ; Eté ; Géographie physique ; Taxonomie ; Type de temps
  • Toutes les méthodes existantes de classification des types de situations atmosphériques comportent une part importante de subjectivité. On cherche à remédier à ce défaut, sur l'exemple des hautes latitudes de l'hémisphère Nord en juillet. - (JPB)
A synoptic climatological analysis of summertime precipitation intensity in the eastern United States
  • A synoptic climatological analysis of summertime precipitation intensity in the eastern United States
  • Air mass ; Atmospheric dynamics ; Classification ; Discriminant analysis ; Precipitation ; Summer ; Synoptic climatology ; United States of America ; Weather type ; Years 1960-69 ; Years 1970-79 ; Years 1980-89
  • Analyse discriminante ; Années 1960 ; Années 1970 ; Années 1980 ; Classification ; Climatologie synoptique ; Dynamique de l'atmosphère ; Etats-Unis ; Eté ; Masse d'air ; Précipitation ; Type de temps
  • This paper proposes to use a newly developed synoptic classification system (the spatial synoptic classification, or SSC, Kalkstein et al., 1996) to examine the spatial variability and trends in intensity of summertime precipitation in the eastern
A generalised classification of South African summer rain-bearing synoptic systems
  • A generalised classification of South African summer rain-bearing synoptic systems
  • Afrique du Sud ; Analyse en composantes principales ; Classification synoptique ; Eté ; Géographie de l'Afrique ; Pluie ; Précipitation ; Type de temps
  • Principal component analysis is applied to monthly South African rainfall fields and the synoptic systems represented in the higher eigenvectors identified by matching the spatial distribution of rainfall on each component with that of the various
A synoptic weather type analysis of january hourly precipitation at Lake Charles, Louisiana
  • A synoptic weather type analysis of january hourly precipitation at Lake Charles, Louisiana
  • Each measurable hourly precipitation event during january at Lake Charles, over the 1951-80 period has been classified by associated synoptic weather type. Using Muller's synoptic classification, four types were found to produce rainfall over
Synoptic classification of snowfall events in the Great Smoky Mountains,USA
  • Synoptic classification of snowfall events in the Great Smoky Mountains,USA
  • Altitude ; Appalachian Mountains ; Classification ; Mountain ; North Carolina ; Snow ; Spatial analysis ; Synoptic climatology ; Tennessee ; United States of America
  • Altitude ; Analyse spatiale ; Appalachian Mountains ; Classification ; Climatologie synoptique ; Etats-Unis ; Montagne ; Neige ; North Carolina ; Tennessee
  • In this paper, the AA. manually classify all snowfall events during the period 1991 to 2004 according to a synoptic classification scheme, calculate mean annual snowfall by 850 hPa wind direction and synoptic class, and develop composite plots
  • of various synoptic fields. Hourly observations from nearby first-order stations and 24 hr snowfall totals from 5 sites within the Great Smoky Mountains National Park (GSMNP) are used to define snowfall events. NCEP/NCAR reanalysis data are used to develop
  • composite plots of various synoptic fields for cyclones passing south and then east of the area (e.g., Miller A cyclones). Results indicate that over 50% of the mean annual snowfall at higher elevations occurs in association with low-level northwest flow
Subjectivity in a computer-assisted synoptic climatology. I. Classification results
  • Subjectivity in a computer-assisted synoptic climatology. I. Classification results
  • Années 1946-1978 ; Champ de pression ; Classification assistée par ordinateur ; Climatologie synoptique ; Géographie physique ; Hémisphère Nord ; Monde ; Méthodologie ; Pression atmosphérique ; Taxonomie ; Type de temps
  • L'étude porte sur le champ de pression au niveau de la mer. Par rapport à une classification dite manuelle , une classification assistée par ordinateur entraîne un précieux gain de temps, mais les résultats ne sont guère moins subjectifs. - (JPB)
Identification of frequency changes in synoptic circulation types and consequences for glacier mass balance in Norway
  • Identification of frequency changes in synoptic circulation types and consequences for glacier mass balance in Norway
  • Air mass ; Atmospheric circulation ; Classification ; Glacier ; Glacier mass balance ; Norway ; Principal components analysis ; Summer ; Synoptic climatology ; Winter
  • Analyse en composantes principales ; Bilan de masse ; Circulation atmosphérique ; Classification ; Climatologie synoptique ; Eté ; Glacier ; Hiver ; Masse d'air ; Norvège
  • glaciers. To achieve this, a Temporal Synoptic Index (TSI) was derived for a 30-year period for a number of synoptic meteorological stations in Norway. The TSI is derived using Principal Component Analysis (PCA) and subsequent clustering of component scores
Métodos de clasificación sinóptica en España. Revisión y propuesta
  • Méthodes de classification synoptique en Espagne. Révisions et propositions
  • Atmospheric circulation ; Classification ; Spain ; Synoptic climatology ; Weather type
  • Circulation atmosphérique ; Classification ; Climatologie synoptique ; Espagne ; Type de temps
An enhanced synoptic climatology of ozone using a sequencing technique
  • An enhanced synoptic climatology of ozone using a sequencing technique
  • This paper examines links between climate and ozone pollution using a synoptic classification scheme, which enables the holistic treatment of complicated relationships between precursors and meteorological factors. The classification is applied
Synoptic-climatic structure of the extreme air thermal phenomena in Poland
  • Synoptic-climatic structure of the extreme air thermal phenomena in Poland
  • Air temperature ; Atmospheric circulation ; Forecast ; Poland ; Statistics ; Synoptic climatology ; Temperature
  • Etude de l'influence de la circulation atmosphérique sur les températures extrêmes en Pologne. L'A. a utilisé la classification des types de circulation de Osuchowska-Klein, et les données de température maximum et minimum relevées dans 19 stations
Synoptic climatology of precipitation in Iran
  • Synoptic climatology of precipitation in Iran
  • Données collectées pour les années 1965-1969: observations journalières à partir de 0,1 mm pour 40 stations. Classification selon les mécanismes responsables des perturbations: cycloniques, frontaux, influence maritime, instabilité des masses d'air
An automated classification of pressure patterns over the British Isles
  • An automated classification of pressure patterns over the British Isles
  • Atmospheric circulation ; Atmospheric pressure ; Classification ; Methodology ; Statistics ; Synoptic climatology ; Threshold ; United Kingdom
  • Circulation atmosphérique ; Classification ; Climatologie synoptique ; Méthodologie ; Pression atmosphérique ; Royaume-Uni ; Seuil ; Statistique
  • The aim of this work is to introduce an automated classification scheme for atmospheric pressure which can be applied over the British Isles. The Kirchhofer method has been accepted here as the most suitable in the search for an atmospheric
  • classification technique. The daily mean sea-level pressure data is categorized into fifteen pressure patterns from a ten-year daily sample (1977-86) and the results discussed.
Daily precipitation patterns over Wales: towards a detailed precipitation climatology
  • Atmospheric circulation ; Cluster analysis ; Methodology ; Orographic effect ; Precipitation ; Synoptic climatology ; United Kingdom ; Wales
  • -surface airflows and significant synoptic situations yields a detailed synoptic precipitation climatology which clearly relates daily precipitation pattern to a limited number of specific synoptic situations and their associated airflows. Tthe limitations
  • inherent within the Lamb classification when applied to a small area also emerge.
Climatological classification of severe wind-driven rain events affecting the southern United States
  • Climatological classification of severe wind-driven rain events affecting the southern United States
  • Classification ; Climatology ; Cyclone ; Southern United States ; Synoptic climatology ; Typology ; United States of America ; Years 1970-79 ; Years 1980-89
  • Années 1970 ; Années 1980 ; Classification ; Climatologie ; Climatologie synoptique ; Cyclone ; Etats-Unis ; Etats-Unis du Sud ; Typologie
  • This paper follows recent studies of wind-driven rain (WDR), and statistically defines a severe WDR event. The research suggests a classification for severe WDR events by association with larger scale weather systems. The study incorporates data
  • for the period 1971 to 1995 and, from these data, the analysis reveals that severe WDR events are confined mainly to the southern United States and occur most frequently in the cold and transition seasons. Extratropical cyclones are the most common synoptic-scale
Amélioration de la classification de L.V. Klimenko des processus synoptiques pour les conditions de la circulation actuelle de l'atmosphère
  • Amélioration de la classification de L.V. Klimenko des processus synoptiques pour les conditions de la circulation actuelle de l'atmosphère
  • Anticyclone ; Atmospheric circulation ; Classification ; Climatic change ; Cyclone ; Synoptic climatology ; Weather forecast
  • Anticyclone ; Changement climatique ; Circulation atmosphérique ; Classification ; Climatologie synoptique ; Cyclone ; KLIMENKO (L.V.) ; Prévision météorologique
A study of climatic variability of daily Central England temperatures in relation to the Lamb synoptic types
  • A study of climatic variability of daily Central England temperatures in relation to the Lamb synoptic types
  • (1861-1980) ; Automne ; Circulation atmosphérique ; Classification de Lamb ; England ; England, centre ; Fréquence ; Géographie physique ; Printemps ; Refroidissement ; Royaume-Uni ; Réchauffement ; Série chronologique ; Taxonomie ; Température
  • redistribution de la fréquence des principaux types de circulation (classification de H. H. Lamb). Les variations thermiques sont largement expliquées par les modifications de la circulation atmosphérique (et ceci serait encore plus vrai avec une classification