Nocturnal Low-level Jet Evolution in a Broad Valley Observed by Dual Doppler Lidar
نویسندگان
چکیده
منابع مشابه
Nocturnal Low-Level Jet over a Shallow Slope
A simple theory is presented for a nocturnal low-level jet (LLJ) over a planar slope. The theory extends the classical inviscid inertialoscillation model of LLJs to include upand downslope motion in the boundary layer within a stably stratified environment. The particular scenario considered is typical of LLJs over the Great Plains of the United States: southerly geostrophic wind over terrain t...
متن کاملSimulating the Nocturnal Boundary Layer During Low-Level Jet Events
Simulating the correct evolution of the nocturnal boundary layer (NBL), also often referred to as the stable boundary layer, is a challenge for any numerical model, since the NBL is influenced by a variety of sub-grid scale phenomena (Lenschow et al. 1988). These phenomena include propagating gravity waves, stationary waves that are fixed with respect to the terrain, Kelvin-Helmholtz waves, and...
متن کاملA low-level jet in eastern Iran: a possible factor in dust events in the region
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. The presence of alow-level jet east of the Seistan mountains is documented here for the first time. The jet exists mainly from May toSeptember and has a core at 850 mb. Ma...
متن کاملAnalytical study of a nocturnal low-level jet over a shallow slope
A simple theory is presented for a nocturnal low-level jet (LLJ) over a planar slope. The theory extends the classical inviscid inertial-oscillation model of LLJs to include upand downslope motion in the boundary layer within a stably-stratified environment. An initial value problem for the coupled equations of motion and thermodynamic energy is solved for air parcels suddenly freed of a fricti...
متن کاملRecurrent Supersynoptic Evolution of the Great Plains Low-Level Jet
The evolution of supersynoptic (i.e., pentad) Great Plains low-level jet (GPLLJ) variability, its precipitation impacts, and large-scale circulation context are analyzed in the North American Regional Reanalysis (NARR)—a high-resolution precipitation-assimilating dataset—and the NCEP–NCAR reanalysis. The analysis strategy leans on the extended EOF technique, which targets both spatial and tempo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Meteorologische Zeitschrift
سال: 2014
ISSN: 0941-2948
DOI: 10.1127/0941-2948/2014/0543