inscription
Portail d'information géographique

Résultats de la recherche (895 résultats)

Affinez votre recherche

Par Collection Par Auteur Par Date Par Sujet Par Titre
  • Intermediate-scale sea ice-atmosphere interactions over high southern latitudes in winter
  • Associations between polar air cloud vortices ( polar lows ), as an indicator of intermediate-scale atmospheric activity, and the Antarctic sea ice, are examined for the Southern Hemisphere winter (June-September). Seven consecutive winters
  • Winter land breeze in a high latitude complex coastal area
  • Air temperature ; Atmospheric circulation ; Breeze ; Coastal environment ; Heat island ; Land breeze ; Surface temperature ; Sweden ; Urban effect ; Winter
  • The winter land breeze (WLB) was studied in an area with complex totpography on the Swedish West Coast. The objectives are to show the horizontal and vertical extension of WLB in a complex landscape and to give a tentative climatology concerning
  • Illustration of the roles of snow in the evolution of the winter cover of a lake
  • a context of processes operative during a winter. The nature of and spatial patterns in the winter cover of lakes and their evolution have important implications for those interested in generalizing about lake ice properties and about the effects of snow
  • Shelfwater response to the cold winters of 1977 and 1978 in the South Atlantic Bight (SAB)
  • Hydrographic data from winter and summer cruises during the 1976 to 1979 period were used to illustrate atypical oceanographic conditions in the SAB, especially during the cold winters of 1977 and 1978.
  • Winter rainfall over the interior of South Africa during extreme dry years
  • The winter airspora spectrum in the Cape Town region perspectives
  • Beyond nuclear winter : on the limitations of science in political debate
  • Observations on winter sedimentation in reservoirs of hydroelectric stations in SW Finland
  • The effects of heavy winter rains and rare summer rains on biological soil crusts in the Negev Desert
  • Arid area ; Biogenic process ; Desert ; Dune ; Duricrust ; Israel ; Negev ; Precipitation ; Sand ; Summer ; Winter
  • Biological soil crusts (BSCs) abound in the Hallamish dune field in the western Negev Desert, Israel. The aim of this paper is to examine crust responses to winter and summer rains, focusing particularly on its biomass components, chlorophyll
  • and carbohydrate. In addition, species composition, during summer and winter was examined. Analysis took place during an exceptionally wet winter (1994/95 with 172 mm) and a summer rainstorm (12.5.93 with 9.7 mm). It is shown that : chlorophyll and carbohydrates
  • of the BSCs increase 2–3-fold following winter rains; much higher species composition was monitored at the BSC during the winter; summer rain substantially deceased the chlorophyll content of the crusts; summer rains may alter species composition and biomass
  • Hydrographic investigations in the Iceland and Greenland Seas in late winter 1971-Deep Water Project
  • Atmospheric pressure patterns, climatic change, and winter wheat yield in North America
  • The winter balance in Grimsvotn, Vatnajokull, 1950-1985
  • The structure of the stratosphere in the Southern Hemisphere during late Winter 1973 as observed by satellite
  • The meridional flux of eddy sensible heat at 700 mb in the Northern Hemisphere winter
  • The long-term geographical distribution of the winter, meridional eddy sensible heat flux is shown and is compared with the flux variation over the winters of 1976-1987. Results indicate that while the winter mean total eddy flux possesses the same
  • The UK winter of 2009/2010 compared with severe winters of the last 100 years
  • Climate ; Cold spell ; Snow ; Time series ; United Kingdom ; Winter
  • Effects of winter weather conditions on soil freezing in southern Michigan
  • Climate ; Freeze-thaw cycle ; Ground freezing ; Michigan ; Model ; Snow ; Soil ; Soil properties ; Temperature ; United States of America ; Weather type ; Winter
  • This study uses a hydrologic/soil-temperature model to examine patterns of winter soil temperatures across southern Michigan, and in so doing sheds light on the meteorologic variables that affect soil freezing. Spatial patterns of soil freezing were
  • studied for 5 uniquely different winter seasons (1951-1952, 1952-1953, 1953-1954, 1976-1977, and 1979-1980) that represent the extremes of weather for the region : various combinations of cold versus warm, snowy versus dry. This approach provides
  • Analysis of winter and summer glacier mass balances
  • Alps (The) ; Arctic Region ; Asia ; Climatic warming ; Europe ; Glacier ; Glacier mass balance ; Global change ; Meltwater ; Mountain ; Seasonal variation ; Summer ; Winter ; World
  • This study compares different seasonal mass balance and interpret the differences between them. The other goal is to analyze data of seasonal mass balance components (winter and summer) for particular glaciers, and between mountain ranges as well
  • . This is done to obtain a better understanding of spatial and temporal variability in winter accumulation, summer melting, and the resulting annual glacier mass balances for the last several decades characterized by a climatic warming trend.
  • Luftbild. Die Einsturzdoline von Winter Park, Mittel-Florida. (Photogaphie aérienne. La doline d'effondrement de Winter Park, Floride centrale)
  • En mai 81, un effondrement s'est produit dans un quartier commercial de Winter Park, dans la banlieue NO d'Orlando. En deux jours le diamètre du trou a atteint 107 m et une profondeur de 30 m. Ce type de phénomène est relativement courant en Floride
  • Impact of the shrinking winter wheat sown area on agricultural water consumption in the Hebei Plain
  • Agriculture ; China ; Crop ; Hebei ; Irrigation ; Maize ; Season ; Water resources ; Wheat ; Winter
  • This article examines the impact of the shrinking winter wheat sown area on agricultural water consumption in the Hebei Plain (China). The results are as follows. 1)The sown areas of winter wheat in the 11 cities in the Hebei Plain all shrunk during
  • the study period, the most serious being in the Beijing-Tianjin-Tangshan metropolitan agglomerate. 2) The irrigation water resources demanded by the winter wheat-summer maize double cropping system ranged from 400 mm to 530 mm, while those demanded
  • by the spring maize single cropping system ranged only from 160 mm to 210 mm. 3) The water resources conserved as a result of the winter wheat sown area shrinkage during the study period were about 15.96×108 m3/a, accounting for 27.85% of those provided
  • Studies on the impact of winter climate on rubber and wheat cultivation in the mountains of southern China
  • Agricultural climatology;Agroclimatology ; China ; Cluster analysis ; Mountain ; Multivariate analysis ; Southern China ; Subtropical zone ; Wheat ; Winter ; Zoning