On the Forcing of the Summertime Great Plains Low-Level Jet
نویسندگان
چکیده
منابع مشابه
On the Role of Sloping Terrain in the Forcing of the Great Plains Low-Level Jet
The summertime Great Plains low-level jet (LLJ) has been the subject of numerous investigations during the past several decades. Characteristics of the LLJ include nighttime development of a pronounced wind maximum of typically 15–20 m s at levels 300–800 m above the surface and a clockwise rotation of the wind maximum during the course of the night. Maximum frequency of occurrence of the LLJ i...
متن کاملSummertime Low-Level Jets Over the Great Plains
A low-level jet (LLJ) is a wind speed maximum that occurs in the lowest few km of the atmosphere. The frequency of LLJ development over the United States is documented climatologically by Bonner (1968), indicating that the Southern Great Plains Cloud and Atmospheric Radiation Testbed (CART) site of the Atmospheric Radiation Measurement (ARM) Program is situated within the region of maximum LLJ ...
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 کاملThe changing influence of El Niño on the Great Plains low-level jet
This study finds that the El Niño influences on the summer Great Plains low-level jet (GPLLJ) are different for the Central Pacific (CP) and Eastern Pacific (EP) types during their decaying phases. While the CP El Niño induces negative sea level pressure anomalies over the Gulf of Mexico to drive anomalous northerly winds weakening the GPLLJ, the EP El Niño intensifies theGPLLJ by inducing anom...
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having conducted the experiment and analysed the data, the researcher computed the groups mean scores and variances for the test relating to the research question. as the final atep, a t-test was conodonted for the hypothesis. as noted earlier, the significance level was determined at .05 and .01 respectively. the observed t-value was higher than the critical t-value at. 5 and .01 levels. conse...
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ژورنال
عنوان ژورنال: Journal of the Atmospheric Sciences
سال: 2017
ISSN: 0022-4928,1520-0469
DOI: 10.1175/jas-d-17-0059.1