Search results for "Julia"

Observed changes in the life time and amplitude of the madden-julian oscillation associated with interannual ENSO sea surface temperature anomalies

2007

Abstract The Madden–Julian oscillation (MJO) is analyzed using the reanalysis zonal wind– and satellite outgoing longwave radiation–based indices of Wheeler and Hendon for the 1974–2005 period. The average lifetime of the MJO events varies with season (36 days for events whose central date occurs in December, and 48 days for events in September). The lifetime of the MJO in the equinoctial seasons (March–May and October–December) is also dependent on the state of El Niño–Southern Oscillation (ENSO). During October–December it is only 32 days under El Niño conditions, increasing to 48 days under La Niña conditions, with similar values in northern spring. This difference is due to faster eastw…

Influence of the Madden-Julian Oscillation on East African rainfall. Part I: Intraseasonal variability and regional dependency

2006

The influence of the Madden–Julian Oscillation (MJO) on rainfall amounts over Equatorial East Africa (Kenya and northern Tanzania) is analysed for the period 1979–95 at the intraseasonal (pentad) time-scale. The two rainy seasons (March to May and October to December) are considered. Intraseasonal wet events in East Africa are embedded in large-scale zonal circulation anomaly patterns along the equator, showing distinct eastward propagation. It is further found that these ‘wet’ events display a clear phasing with respect to the MJO cycle. This phasing is expressed as out-of-phase variations between the Highland and the coastal areas. Such a pattern is suggested to reflect different rain-cau…

Juridicos fundamentos por Jacinto Garcia, vecino de la Ciudad de San Felipe. En el pleyto con el Convento de Carmelitas Calzados del Convento de San …

1745

A la part superior de la port.: "Jesus, Maria, Joseph" Signat al final: "D. Faustino Locella" Port. orlada Grav. enmarcat a la port. de: "S. Francisco" Caplletra ornada al començament del text Sign.: [A]2, B-E2, F1 Reclams

Alegación juridica por el Convento, y religiosos de San Julian, Orden de Nuestra Señora del Carmen, sito extra muros de la Ciudad de San Felipe. Co…

1745

A la part superior de la port.: "J. M. J." Signat al final: "Dr. D. Thomàs Ros" Port. orlada Grav. calc. a la port. "Mater decor Carmeli." "B" Caplletra ornada al començament del text Sign.: [A]2, B-D2, E1 Reclams

Juliana Colomer, Desirée: Fiesta y urbanismo: Valencia en los siglos XVI y XVII

2020

Influence of the Madden-Julian Oscillation on Southern African summer rainfall

2007

Rain-causing mechanisms over Southern Africa (south of 15˚S) involve both tropical and temperate dynamics. Most studies focused on the synoptical timescale, while the intraseasonal (20-120 days) variability has more been neglected to date. This study aims at determining whether the dominant mode of intraseasonal variability in the Tropics, namely the Madden-Julian Oscillation (MJO), has a significant impact on Southern African rainfall and associated atmospheric dynamics. The examination of outgoing longwave radiation (OLR) over Southern Africa shows indeed significant intraseasonal fluctuations at the 30-60 day timescale, i.e. in the pe- riods that are typically reminiscent of the MJO. In ord…

Refractarias voces ... / que da a la luz del mundo Fr. Julian Chumillas, hijo ... de la Seraphica Religion de los Menores ..., atormentado el corazon…

1692

Sign.: A4

Intraseasonal rainfall variability over Madagascar

2016

International audience; Using daily rain-gauge records for Madagascar and nearby islands, this paper investigates rainfall intraseasonal variability at local and regional scales during the austral summer season (November–February), as well as the respective influences of recurrent convective regimes over the South-West Indian Ocean (SWIO) and the Madden-Julian Oscillation (MJO). Our results show a general consistency between local-scale rainfall variability in Madagascar and regional-scale features of climate variability. The influence of Tropical-Temperate Troughs in their mature phase and/or their easternmost locations is first underlined. The development of such systems over Southern Afr…

Le colpe della cultura pagana: riflessioni sull'Epistola 69b di Giuliano

2002

The article is a reflection starting from the epistle 89b of the emperor Julian, which is presented as an illuminating document for the reconstruction of the values of the Hellenic civilisation, based on a precise paideutic-religious programme, which takes the form of a kind of canon of praiseworthy and/or inadvisable authors

Typology of pentad circulation anomalies over the Eastern Africa - Western Indian Ocean region, and their relationship with rainfall

2005

International audience; The aim of this study was to classify the most frequently observed atmospheric circula- tion anomaly patterns in eastern Africa and the adjacent Indian Ocean. As an example of the useful- ness of such a classification, the second objective was to test whether these patterns account for intraseasonal rainfall anomalies in the region. A partitioning algorithm, known as dynamical cluster analysis, was therefore applied to the zonal (U)and meridional (V)components of the wind anom- alies, obtained from the NCEP-NCAR Reanalysis R-2 at the pentad (5 d) timescale. The 3 geopoten- tial levels 850, 700 and 200 hPa were combined. Focus is on the transition seasons (March to Ma…