France ; Precipitation ; Rainfall regime ; South-Eastern France ; Years 1950-59 ; Years 1990-99
Decreasing significant trends (1950-2000) do not affect French mediterranean rainfall, except during few months : March (West of the Rhône river), November or October (East of the river), and November (Rhône valley). They correspond to significant
decreases in mean daily rainfall and negative relations with regional mean sea level pressures. - (BJ)
Bouches-du-Rhône ; Climatic data ; Comparative study ; Exceptional event ; France ; Marseille ; Precipitation ; Provence-Alpes-Côte d'Azur ; Radar ; Rainfall ; Remote sensing
On September 19, 2000, Marseille (South of France) have been flooded by a very strong rainfall event. Rainfall measurements from two sensors with different spatiotemporal characteristics rain gauge and radar have been used in order to compare
Asia ; Atmospheric circulation ; Correlation ; Drought ; Interannual variability ; Middle East ; Rainfall ; Regional climate ; Years 1960-69 ; Years 1980-89
Dry and wet years in the Near-East - Relationship with regional atmospheric circulation. Rainfall in the Near-East (Lebanon, Syria, Jordan, Israel) is characterized by a strong variability at inter-annual and monthly time scales. Three regional
units of co-variation are defined using monthly data for 116 stations on the period 1960-90. The relationship between the exceptionally wet and dry months and atmospheric circulation (NCEP-NCAR reanalyses) is analysed. Rainfall in the three regions
From a downscaling of a GCM, we have developed a climate scenario for Mali. The sensibility assessment of the rainfall and the temperature values has been done. It show that a wet period will be produced by an increasing of 10 % of the mean level
of 1961-1990. A dry period will be produced by a decreasing of 10 % of the mean of rainfall level of 1961 to 1990. - (BJ)
Agricultural region ; Congo ; Pluviometry ; Precipitation ; Rainfall deficit ; Seasonal variation ; Years 1950-59 ; Years 1990-99
In the last three decades, important rainy deficits rainfall have characterised the climate trend of the main southern agricultural regions of the Republic of Congo (Vallée du Niari and the Plateau des Cataractes) that represents 95000 km2, 28
% of the Congolese territory. The rainy deficit rainfall is approximately 10 % and had been accompanied by seasonal precipitation disorganisation. Increasingly, the great dry season (of June to September) lengthens, what induced the shortening of the first rainy
. Characteristics of precipitation such that the onset, the end and the rainy season length and the total rainfall, as well as the different lengths of sequences dry during the vegetative season have important effect on the plants development. The main goal
Brazil ; Mato Grosso ; Precipitation ; Rainfall ; Remote sensing ; Satellite imagery ; Season ; Tropical zone
We used images from geostationnary satellites GOES for estimating monthly rainfall in the state of Mato Grosso in western central Brazil. Infrared data were compared to ground measurements for about 200 stations. In this greatest pioneer front
Africa ; Agriculture ; Agronomy ; Climate fluctuation ; Crop yield ; Impact ; Monsoon ; Rainfall ; Sahel ; West Africa
West African Sahel depends mainly on rain fed agriculture. Rainfall available for this agriculture is concentrated in a very short-time range leading to an extreme sensitivity of yield to monsoon fluctuations at different time-scales. The aim
The study focuses on rainfall changes over South Africa as simulated from the ocean-atmosphere coupled general circulation model ARPEGE/OPA, under the IPCC B2 scenario. Simulations for 1970-1999 are compared with observed data in order to assess
the ability of the model to reproduce Soouth African climate. Spatial patterns ans seasonal variations are correctly simulated, but precipitation amounts are overestimated. Projections for the XXI century display a small decrease of both the rainfall amounts
The rainfall event happened on September 2000 the 19th over Marseille (France) belongs to the extreme ones. A meso-scale map of the spatial distribution of the precipitation totals with a core where more than 200 mm has fallen has been drawn
salinisation, especially when rainfall decreases and/or temperatures increase. On the other hand, the risk of eutrophisation is the more preoccupying in Sidi Salem, especially when contributions of water regress. - (BJ)
A statistical study of the nebulosity and the rain, associated to the composite analysis of the humidity has shown that rainfall generated by the squall line issue with the squall lines issue from the convective part essentially. Too less ten hours
From the analysis of rainfall variability, it is possible to identify ruptures of stationnarity (for example the end of 1970's) in the forest area of Haut-Sassandra (mid-west of the Côte d'Ivoire) which correspond certainly to significant variations
The onset of the monsoon system over West Africa is linked to the northward excursion of the Intertropical Convergence Zone (ITCZ) during the northern spring and summer. By using a daily gridded rainfall dataset over the 1968-1990 period, we have