Results 21 to 30 of about 51,741 (265)
Taklimakan Desert nocturnal low-level jet: climatology and dust activity [PDF]
Atmospheric Chemistry and Physics, 2016 While nocturnal low-level jets (NLLJs) occur frequently in many parts of the world, the occurrence and other detailed characteristics of NLLJs over the Taklimakan Desert (TD) are not well known.
J. M. Ge +5 more
doaj +1 more source
Low Level Jet Wind Shear in the Sahel [PDF]
International Journal of Engineering Research in Africa, 2013 In the Sahel, a vertical wind shear appears in the dry and in the wet seasons. In Niamey, Niger, during the dry season, the period of strong shears is clearly linked to the Nocturnal Low Level Jet (LLJ) since it occurs in a narrow time period around 06H00 UTC at 60% of the cases reach shears which require an alert to the pilots (higher than 4 ms-1 per ...
Madougou, Saïdou +3 more
openaire +2 more sources
Low‐Level Jets and the Convergence of Mars Data Assimilation Algorithms [PDF]
Journal of Geophysical Research: Planets, 2022 AbstractData assimilation is an increasingly popular technique in Mars atmospheric science, but its effect on the mean states of the underlying atmosphere models has not been thoroughly examined. The robustness of results to the choice of model and assimilation algorithm also warrants further study.
Todd A. Mooring +2 more
openaire +2 more sources
Mesoscale Ascent in Nocturnal Low-Level Jets [PDF]
Journal of the Atmospheric Sciences, 2018 A theory for gentle but persistent mesoscale ascent in the lower troposphere is developed in which the vertical motion arises as an inertia–gravity wave response to the sudden decrease of turbulent mixing in a horizontally heterogeneous convective boundary layer (CBL).
Alan Shapiro +2 more
openaire +1 more source
Numerical simulation of future low-level jet characteristics
Meteorologische Zeitschrift, 2012 In this paper, results of numerical simulations of low-level jet (LLJ) characteristics are presented. By forcing a boundary layer model with the results of a regional climate model, long time series have been calculated which are analyzed with special ...
Günter Gross
doaj +1 more source
A low-level jet in eastern Iran: a possible factor in dust events in the region [PDF]
Desert, 2015 One of the world's major mineral dust source regions lies along the border between Iran and Afghanistan. In this studyit is hypothesized that a low-level jet may play in role in generating the intensity of this source region.
Sharon Nicholson
doaj +1 more source
Measurements and Modelling of Offshore Wind Profiles in a Semi-Enclosed Sea
Atmosphere, 2019 A conically scanning, continuous-wave LIDAR is placed on an island in the central Baltic Sea with large open-water fetch, providing wind and turbulence profiles up to 300 m height.
Nina Svensson +4 more
doaj +1 more source
Low-level stratiform clouds and dynamical features observed within the southern West African monsoon [PDF]
Atmospheric Chemistry and Physics, 2019 During the boreal summer, the monsoon season that takes place in West Africa is accompanied by low stratus clouds over land that stretch from the Guinean coast several hundred kilometers inland. Numerical climate and weather models need finer description
C. Dione +9 more
doaj +1 more source
Offshore Migration of Summer Monsoon Low‐Level Jet on a Diurnal Scale
Geophysical Research Letters, 2023 This study investigates the diurnal migration of the low‐level jet (LLJ) over the Bay of Bengal in the summer monsoon, which remains understudied despite the well‐documented diurnal offshore propagation of rainfall worldwide.
Y. Du
doaj +1 more source
Mid-level convection in a warm conveyor belt accelerates the jet stream [PDF]
Weather and Climate Dynamics, 2021 Jet streams and potential vorticity (PV) gradients along upper-level ridges, troughs and zonal flows form a waveguide that governs midlatitude dynamics. Warm conveyor belt (WCB) outflows often inject low-PV air into ridges, and the representation of WCBs
N. Blanchard +3 more
doaj +1 more source