Search results for "Universe"

Using Global Radiation Model to Simulate Surface Temperature Impact on Snow Melt - Loven Glacier – Spitsberg

2009

International audience

Multi-scale study of the rainy season onset over the Sudano-Sahelian belt: Spatial coherence and potential predictability

2011

The spatial coherence of boreal monsoon onset (July-September) over the western and central Sahel is studied through the analysis of daily rainfall records for 136 rain-gauges from 1950-2000. Onset of the rainy season has been defined using 3 definitions which rely on 3 overlapped spatial scales: (i) the regional scale, i.e. the northward ITCZ jump from Guinean to Soudano-Sahelian latitudes, (ii) the meso-scale related with the first occurrence of the main rainfall-generating phenomenon, that is squall line and (iii) the local-scale of the first rainfall recorded at the rain-gauge. Local and meso-scale onsets show a weak degree of instantaneous and inter-annual spatial coherence, meaning th…

Étude du paléoclimat ordovicien (440 millions d'années) à travers l'enregistrement de la dynamique des glaciers au Niger.

2008

6 pages; National audience

A detailed record of recent climatic changes in a laminated lake record in the Sahel

2009

International audience

Hydrological and geochemical response of a polar glacier facing the recent climate changes (Austrelovenbre, Svalbard, 79°N)

2011

Climate recent evolution observed in Svalbard (air temperature and precipitation) : a focus on the 40 years in Ny Alesund (79°N)

2011

Monitoring snow cover dynamics on an arctic hydrosystem using field measurements, remote and in situ sensing (Austre Lovenbreen, Spitsberg, 79°N)

2010

International audience

2D and 3D variations of an Arctic Glacier to recent climate change since forty years (Austre Lovenbreen, Svalbard, 79°N)

2010

International audience

Un enregistrement des flux sédimentaires sous glaciaires dans le lac du front de la mer de glace (Chamonix-France) : Bilans perspectives

2003

North-Atlantic Oscillation and regional-scale sea-surge variability in Gulf of Lions during the 20th century

2010

Article soumis; International audience; Sea-surge variations recorded at three tide-gauge stations (Grau-de-la-Dent, Sète, and Port-Vendres) around the Gulf of Lions (Northwest Mediterranean Sea) are mostly locally forced by onshore winds blowing from 90° to 180° related to an atmospheric depression usually centered between the Bay of Biscay and the British Island, which is more prevalent during the negative phase of the North-Atlantic Oscillation (NAO). During the second half of the 20th century, the long-term increase of sea-surge height at Grau-de-la-Dent finds no counterpart in the positive deviation of the NAO. The relationship between the monthly frequency of sea surges > 20 cm at Gra…