Agroclimatologie ; Culture kharif ; Culture rabi ; Distribution spatiale ; Géographie de l'Asie ; Inde ; Précipitation ; West Bengal
On the basis of normal monthly rainfall, seasonal rainfall was evaluated and the State delineated into different zones. The principal meteorological factors have also been identified. - (PLK)
Trends and periodicity in the longest instrumental rainfall series for the area of most extreme rainfall in the world, northeast India
Années 1848-2000 ; Assam ; Fluctuation climatique ; Inde ; Meghalaya ; Mousson ; Précipitation ; Périodicité ; Siècle 19 ; Siècle 20 ; Statistique ; Série chronologique ; Tendance du climat
The longest instrumental rainfall series have been investigated for the North Assam subdivision and 4 meteorological stations in Northeast India. Analysis of trends to annual and seasonal rainfall show these to be very stable, with no change
in the rainfall over North Assam during the last 150 years. The Fourier analysis of fluctuations in rainfall series shows that the periodic signal of T = 3,5 year is the strongest one.
Années 1880-1960 ; Climat ; Cycle climatique ; Filtrage ; Fluctuation climatique ; Géographie physique ; Inde ; Précipitation ; Périodicité ; Série chronologique ; Variation climatique
Le filtrage des séries pluviométriques de l'Inde (1880-1960) à l'aide des moyennes mobiles pondérées confirme l'existence de périodicités, ou pseudo-périodicités (cycles de 6-7, 10-11, 16, 18-19 et 22 ans). Grande cohérence entre le centre et le NW
Orographic effect of the Western Ghats on the monsoon rainfall
Effet orographique ; Géographie de l'Asie ; Inde ; Montagne ; Mousson ; Précipitation ; Western Ghats ; Zone intertropicale
The normal rainfall data over 50 years relating to some selected Western Ghats stations have been analysed to study the vertical precipitation profile over the Ghats. An attempt has also been made to find out how far these results agree
Rainfall distribution over the Indian Subcontinent during the 1987 and 1988 severe floods in Bangladesh
Bangladesh ; Crue ; Eté ; Inde ; Inondation ; Mousson ; Pluie torrentielle ; Précipitation ; Type de temps ; Variation saisonnière
The rainfall distribution over the Indian Subcontinent during recent 2 severe floods (1987 and 1988) in Bangladesh was examined using daily station-based rainfall data, mainly from macro-scale view point. In both years, rainfall was abundant
in northeastern and northwestern part of Bangladesh and adjacent Indian Territory. This rainfall pattern was also obvious during and/or prior to the severe flood events in Bangladesh. Extreme high water level of the Ganges in 1987 and that of the Brahmaputra
in 1988 were caused under such rainfall distribution.
An apparent relationship between Eurasian snow cover and Indian monsoon rainfall
Eurasie ; Géographie de l'Asie ; Inde ; Manteau nival ; Mousson ; Neige
Les AA. suggèrent l'existence d'une relation inverse entre l'étendue ou la durée du couvert neigeux hivernal, sur le continent eurasiatique, et l'importance des pluies de mousson en Inde. Mais le principal reste à faire, à savoir proposer une
Application de l'analyse en composantes principales à l'étude des variations temporelles de la pluviosité dans 53 stations de l'Inde péninsulaire. L'année a été découpée en 73 périodes de cinq jours. Les deux premières composantes expliquent 91% de
Holocene variation of monsoon rainfall in Rajasthan
Domaine aride ; Géographie physique ; Holocène ; Inde ; Mousson ; Paléoclimatologie ; Précipitation ; Quaternaire zone chaude ; Rajasthan ; Variation climatique ; Zone subtropicale
Two reconstructed histories of the monsoon rainfall in Rajasthan show that the monsoon was weak or absent in latest glacial time. With the advent of Holocene climatic patterns, fresh water lakes formed in dune fields and the pollen rain preserved
Ordres de grandeur des systèmes de circulation atmosphérique et explication des climats: l'exemple de l'Inde
Circulation atmosphérique ; Climatologie ; Echelle ; Géographie physique ; Inde ; Mousson ; Notion d'échelle ; Ordre de grandeur ; Système climatique
of magnitude. They combine with geographic patterns and relief features among which three orders of magnitude may be distinguished. Circulations of each dimension play their own part in the explanation of the distribution and rhythm of summer rainfall
. Their relations, between themselves and with geographic patterns, bring out three different regional combinations (viz. West coast, interior and South-East, North-East). In every case the origin of rainfall, as well as its distribution according to time and space
Rainfall, runoff and soil erosion in the extremely humid area around Cherrapunji, India. (Preliminary observations)
Bassin-versant ; Déboisement ; Erosion des sols ; Inde ; Latérite ; Meghalaya ; Parcelle expérimentale ; Précipitation ; Ruissellement ; Utilisation du sol ; Zone intertropicale
This paper includes a characterization of the environment in the extremely humid Cherrapunji region (with annual rainfalls from 8 000 to 24 000 mm), as well as a description of a new project and preliminary observations on runoff and soil erosion
. Due to deforestation, soils are degraded. The investigation is based on existing meteorological records, measurements of rainfall intensity by way of pluviometers, and observations of selected geomorphological and hydrological processes conducted
Inde ; Pluviométrie ; Précipitation ; Siècle 20 ; Série chronologique ; Tendance du climat ; Test ; Traitement des données ; Variabilité climatique
L'analyse des données mensuelles homogénéisées d'un réseau de 1476 pluviomètres, sur les années 1901-2003, permet de subdiviser l'Inde en trois ensembles où les précipitations ont respectivement évolué à la baisse, à la hausse et sont restées