inscription
PORTAIL D'INFORMATION GÉOGRAPHIQUE

Résultats de la recherche (11565 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre Par ville ? Par pays ? Par continent ?
  • Regional precipitation variability in the southern United States
  • Atmospheric circulation ; Cyclone ; Global change ; Precipitation ; Seasonal variation ; Southern United States ; Spatial variation ; Teleconnection ; United States of America
  • This paper analyzes relationships between large-scale circulation variations and regional precipitation within the southern United States. Results provide a better understanding of the causes of both short-term and long-term precipitation
  • [b1] Louisiana State University, Dept. of Geography and Anthropology, Baton Rouge, Louisiana 70803, Etats-Unis
  • Cold front variability in the southern United States and the influence of atmospheric teleconnection patterns
  • Atmospheric circulation ; Atmospheric dynamics ; Climate oscillation ; Cold front ; El Niño ; Ocean atmosphere interaction ; Southern United States ; Teleconnection ; United States of America ; Weather type
  • The variability of cold front passages in the southern United States and the effects of 3 teleconnection patterns on cold front frequencies are analyzed in this study. The Southern Oscillation is weakly correlated with cold front frequencies
  • variability in this region. The PNA pattern is most strongly tied to variations in cold front passage frequencies in Florida. Various parts of the southern United States are affected by the NAO.
  • Variations in dew-point temperatures in the southern United States
  • Atmospheric circulation ; Atmospheric moisture ; Climate ; Climatic variability ; Global change ; Seasonal variation ; Southern United States ; Temperature ; United States
  • Atmospheric humidity as measured by dew-point temperatures is an important component of the climate of the southern United States. A gradient is established between moist air along the Gulf and Atlantic coasts inland toward the drier areas
  • from greenhouse warming has altered dew-point temperaturesin the southern United-States.
  • The wonders and origins of four national parks in the southern United States
  • Leisure ; National park ; Nature conservation ; Nature park ; Nature reserve ; Southern United States ; Tourism ; United States
  • Between 1921 and 1941, four national parks were established in the USA : Hot Springs (Arkansas) ; Great Smokey Mountains (Tennessee-North Carolina) ; Shenandoah (Virginia) ; and Mammoth Cave (Kentucky). All the parks depended on private and state
  • Residential solar space-heating potential across the United States and Southern Canada
  • Geography at Southern Oregon State College
  • Educational program ; Geographical practice ; Oregon ; Teaching of geography ; United States
  • Atmospheric teleconnections and citrus freezes in the Southern United States
  • Agricultural climatology;Agroclimatology ; Anticyclone ; Atmosphere ; Citrus ; Cold front ; Freezing ; Southern United States ; Teleconnection ; Troposphere ; United States
  • The frequency of dry spells in the southern United States
  • Atmospheric circulation ; Climatic region ; Cluster analysis ; Drought ; Florida ; Spatial variation ; Texas ; United States of America ; Weather type
  • This paper is an exploratory analysis of the frequency distribution of dry spells of various lengths and of their spatial variation. The whole of the southern United States was considered, with data for 1950 to 1994 for 154 stations, so that a range
  • Warm-season soil moisture deficits in the Southern United States
  • Atmospheric dynamics ; Correlation ; Drought ; Evapotranspiration ; Interannual variability ; Precipitation ; Soil moisture ; Southern United States ; Teleconnection ; Twentieth Century ; United States of America ; Water deficit
  • The interannual variability in warm-season soil-moisture deficits were examined for the Southern United States from 1895-2005. Moisture deficit values are computed using the Thornthwaite/Mather water budget technique. Five soil-moisture deficit
  • 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
  • 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
  • The spatial, temporal, and thermodynamic characteristics of Southern-Atlantic United States tornado events
  • Atlantic Ocean ; Cluster analysis ; Coastal environment ; Forecast ; Index ; Rainstorm ; Southern United States ; Tornado ; United States of America ; Weather forecast ; Weather type ; Years 1980-89
  • Severe weather forecasting index values are derived for 129 Southern Atlantic (SA) Coast (South Carolina, North Carolina, and Virginia) and 98 southern Great Plains (Texas, Oklahoma, and Kansas) tornado days through spatial and temporal
  • The emergence of dengue fever in the United States and its public health implications
  • Diffusion ; Disease ; Epidemic ; Health ; Medical geography ; Regional pathology ; United States of America
  • Dengue fever, a virus spread by two species of Aedes mosquitoes, now has those two vectors in the USA. Suitable climate in the southern United States and frequent movement of people with the disease from Mexico and the Caribbean may create a serious
  • Periglacial landforms of Southern Africa compared with those of Colorado and New Mexico
  • Arid land;Arid environment ; Colorado ; Mountain ; New Mexico ; Palaeo-environment ; Palaeoclimate ; Periglacial features ; South Africa ; Tree line ; United States
  • Periglacial landforms in southern Africa and the alpine zone of Colorado and New Mexico are compared. Lower altitudinal features in southern Africa reflect a drier environment. - (AJC)
  • Drought, wind, and blowing dust on the Southern High Plains of the United States
  • Agricultural climatology;Agroclimatology ; Drought ; Eolian dust ; Eolian erosion;Wind erosion ; Eolian features ; New Mexico ; Regression analysis ; Soil moisture ; Texas ; United States ; Wind
  • The purpose of this paper is to use the meteorological record for Lubbock, Texas to investigate the roles of drought and wind speed on the amount of blowing dust on the Southern High Plains.
  • Magnitude and frequency of blowing dust on the Southern High Plains of the United States
  • Aeolian features ; Atmospheric circulation ; Dust storm ; New Mexico ; Plant cover ; Soil erosion ; Statistics ; Texas ; United States of America ; Wind erosion ; Wind speed
  • The purpose of this study is to gain an appreciation of the relative roles of large, moderate, and small blowing-dust events on the Southern High Plains. In the absence of detailed quantitative data on these events during the 1930s, the AA. focus
  • Century 19th ; Civilization ; Cultural geography ; Cultural identity ; Historical geography ; Ideology ; Myth ; Nationalism ; Southern United States ; Tradition ; United States
  • The attempt to create a nation-state in the form of the Southern Confederacy was an act of political geography, induced by growing sectional identities and the forces of romantic nationalism. The military defeat of the Confederacy enhanced Southern
  • An ecological analysis of migration in metropolitan America, 1970-1975 in Metropolitan and regional change in the United States.
  • Dissimilar migration experiences of southern and nonsouthern metropolitan areas. Hypotheses are drawn from human ecology to ascertain the degree to which variations among southern and nonsouthern metropolitan areas could be accounted
  • Variability in high temperature extremes in the southeastern United States
  • Climatology ; Drought ; Forecast ; Seasonal variation ; Southern United States ; Spatial variation ; Statistics ; Temperature ; United States
  • Forty-one years of data from 13 first-order National Weather Service stations in the southeastern United States were analyzed to determine the spatial variability in the frequency and duration of hours and days when temperatures were ≥32°C (high
  • Spatial pattern of temporal trends in moisture conditions in the southeastern United States
  • Climate ; Climatic variability ; Moisture ; Potential evapotranspiration ; Precipitation ; Southern United States ; United States
  • Temporal trends in annual Palmer's Drought Severity Index (PDSI) for 53 climate divisions are examined for the period 1895 to 1988 in the southeastern United States, including Alabama, Florida, Georgia, Mississippi, North Carolina, South Carolina
  • Trends in fog frequency and duration in the southeast United States
  • Atmospheric moisture ; Climatic trend ; Fog ; Forecast ; Linear regression ; Southern United States ; United States of America ; Virginia
  • This study identifies the trends and frequency of fog events across the south-eastern United States. A simple linear regression was performed on hourly datasets for annual and seasonal fog-event days and on fog duration. The majority of Virginia