Climat ; Climat équatorial humide ; Géographie physique ; Monde ; Quaternaire zone chaude ; Tropiques ; Zone intertropicale
Essai de définition de l'évolution des températures, de l'évaporation et de la végétation des régions situées sous climat équatorial humide au Quaternaire et de l'aire d'extension de ces climats. (OC).
Wet/cool (dry/hot) summers with active (weak) Baiu frontal activity are closely related to El Nino (anti-El Nino) over the equatorialPacific. The socio-economic impacts of El Nino year in 1982-1983 were analysed for agricultural production, energy
The fusulinid limestones were deposited in an equatorial belt of open ocean, distant from the New Zealand Gondwana margin, where climate contrasted markedly with the cold environment of continental New Zealand represented by the Parapara Peak
sequence. They were part of a Tethyan area of deposition now widely dispersed in North America, New Zealand, and Southeast Asia by subsequent sea-floor spreading and accretion onto the continents bordering the Paleo-Pacific.
Observing long-period fluctuations of surface winds in the tropical Pacific: initial results from island data
A strengthening and subsequent weakening of the equatorial trades occurs prior to the first sea surface temperature anomaly at the coast of Peru, espacially in the Gilbert and Phoenix Island groups, for most of the El Nino events in 1950-1978
El Nino-like events observed in the tropical Pacific
En 1979 et 1982, de fortes anomalies négatives de la salinité de surface ont été constatées sur l'ouest du Pacifique équatorial. Ce phénomène est habituellement associé au Nino, mais aucune anomalie thermique n'était décelable sur le Pacifique
Long-term wind variability in the tropical Pacific, its possible causes and effects
Les AA. démontrent l'existence d'une corrélation statistiquement significative entre les précipitations enregistrées sur le Pacifique équatorial, notamment sur les Sporades de la Polynésie centrale (Line Islands), et la composante méridienne des
Hawaiian winter rainfall related to Pacific sea surface temperature
Pacifique Est équatorial). Cette relation s'est considérablement amoindrie, si elle n'a pas tout à fait disparu, au cours des années 1970-1977. On suggère que les influences dominantes s'exerçant sur la pluviosité des Hawaii ont pu changer vers 1970. La
Le milieu urbain majore en toutes circonstances l'agressivité du climat équatorial : accentuation de l'inconfort par temps sec, altération accrue de l'environnement (inondations, érosion hydrique) par temps pluvieux. - (JPB)
The effect of Atlantic and Pacific sea surface temperatures on the mid-summer drought of Costa Rica
Atlantic Ocean ; Atmospheric dynamics ; Climate oscillation ; Costa Rica ; Drought ; El Niño ; Ocean atmosphere interaction ; Pacific Region ; Sea water ; Surface temperature ; Temperature ; Trade wind
correspond à un renforcement de l'anticyclone nord-atlantique et aux alisés. Quand elle se combinent avec les températures plus chaudes dans le Pacifique équatorial oriental, le gradient de pression à travers l'isthme augmente, accentuant l'effet orographique
L. V. Worthington (1968, Meteorological Monographs 8, 6367) hypothesized that a low-salinity lid covered the entire world ocean. By deconcolving isotopic curves from the western equatorialPacific and equatorial Atlantic, W. H. Berger, R. F. Johnson
. It is quite similar to the west-equatorialPacific signal published previously. Deglaciation is seen to occur in two steps which are separated by a pause. Onset of deglaciation is after 15.000 yr B.P. The pause is centered between 11.000 and 12.000 yr B.P
analysis with respect to space and time. Major interest was directed to the teleconnections and phase relationships of long-term fluctuations (periodicities between one and ten years) between stations in the equatorialPacific, Indonesia, India, Africa
This paper presents additional evidence on the source areas and transporting agents of freshwater microfossils in sediments of the equatorial Atlantic. This study confirms the validity of paleoclimatic research which inferred eolian transport
Climatic change ; Interdecadal variation ; Jawa ; Pacific Region ; Seasonal variation ; Spatial distribution ; Sumatera ; Tropical zone ; Volcanic eruption ; Volcanism ; World
of large volcanic eruptions since 1750 according to their geographic latitudes, their elevations, and the years and months in which they occurred. The results show that most large volcanic eruptions were located around the margins of the Pacific Ocean
and the islands of Sumatra and Java, especially in the equatorial regions (10°N-10°S). Large volcanic eruptions were concentrated at 1000–2000 m elevations and in the months of January and April. Large volcanic eruptions have interdecadal fluctuations, including