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Thomas R. Parish

1. Introduction Nocturnal low-level wind maxima have received considerable attention during the past few decades. In particular, the Great Plains low-level jet (LLJ) has been the topic of extensive study (e.g., Bonner 1968 ; Mitchell et al. 1995 ; Whiteman et al. 1997 ). Wind profiles in the lowest kilometer at Great Plains sites often show profound day-to-night differences. Weak southerly winds in the lowest several hundred meters often persist throughout the daylight hours only to be

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R. M. Samelson and P. L. Barbour

remainder of the year. In contrast to the bimodality within the channel, the distribution of 10-m winds in the Lincoln Sea, away from the Nares Strait channel, is unimodal and centered around zero flow, with standard deviation of only 3.8 m s −1 , and extreme values of ±10 m s −1 ( Fig. 3a , dash–dot line). The core of the wintertime southward jet in this region is located near 300-m height, where monthly-mean winds are roughly twice 10-m values ( Fig. 4 ). The bimodality of the hourly wind

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Jun Li and Yi-Leng Chen

1. Introduction Strong winds or jet streams in the lower troposphere have generated considerable interest because of their importance to air pollutant transport, thunderstorm development, wind energy production, and aviation safety. A strong low-level mountain-parallel flow as a result of blocking is generally referred to as a barrier jet ( Schwerdtfeger 1975 ; Parish 1982 ; Overland and Bond 1993 ). In cold-air damming events ( Forbes et al. 1987 ; Bell and Bosart 1988

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David A. Rahn, Thomas R. Parish, and David Leon

, 2013 : Airborne observations of a Catalina eddy . Mon. Wea. Rev. , 141 , 3300 – 3313 . Rahn , D. A. , and T. R. Parish , 2007 : Diagnosis of the forcing and structure of the coastal jet near Cape Mendocino using in situ observations and numerical simulations . J. Appl. Meteor. Climatol. , 46 , 1455 – 1468 . Rogers , D. P. , and Coauthors , 1998 : Highlights of Coastal Waves 1996 . Bull. Amer. Meteor. Soc. , 79 , 1307 – 1326 . Saha , S. , and Coauthors , 2010 : The NCEP

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Hua Chen and Weiyu Pan

northward and eastward from its original location. One or two days later, it reaches the jet and propagates along the jet. Besides propagation, these signals also move along with synoptic weather systems. In space, the positive and negative signals distribute alternately, suggesting that signals propagate along the jet by the way of Rossby wave trains. Furthermore, as the jet splits into two over western Europe, the signals still propagate along the two jets, respectively ( Fig. 3 ). Therefore, the jets

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L. F. WHITNEY Jr., A. TIMCHALK, and T. I. GRAY Jr.

MONTHLYWEATHERREVIEWVOLUME 94, NUMBER 3MARCH 1966ON LOCATING JET STREAMS FROM TIROS PHOTOGRAPHSL. F. WHITNEY, Jr., A. TIMCHALK, and 1. 1. GRAY, Jr.National Environmental Satellite Center, Environmental Science Services Administration, Washington, D.C.ABSTRACTThe purpose of this study is to evaluate the reliability of locating jet streams by means of certain cloud patternsin TIROS pictures, and to determine the most definitive characteristics of those patt,erns. It would be very

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WILLIAM D. BONNER

MONTHLY WEATHER REVIEWVOLUME 96, NUMBER 12DECEMBER 1968CLIMATOLOGY OF THE LOW LEVEL JETWILLIAM D. BONNERDepartment of Meteorology, University of California at Los Angeles, Calif.ABSTRACTGeographical and diurnal variations in the frequency of Occurrence of strong low level wind maxima arc deter-mined using 2 yr. of wind data from 47 rawinsonde stations in the United States. Maximum frequency of occurrenceis found in the Great Plains at approximately 37"N. and 98"W. The vast majority of jets in

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George P. Cressman

2450MONTHLY WEATHER REVIEWVOLUME 109Circulations of the West Pacific Jet StreamGEORGE P. CRESSMANNational Meteorological Center. National Weather Service, NOAA, Washington, DC 20233(Manuscript received 27 April 1981, in final form 25 September 1981)ABSTRACTThe jet stream of the west Pacific is a very steady feature of the winter circulation, with almost continuousintensification over East China and Japan and weakening in the central Pacific. In this study the NationalMeteorological Center

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Andrew H. Van Tuyl and John A. Young

MONTHLY WEATHER REVIEW VOLUME 110Numerical Simulation of Nonlinear Jet Streak AdjustmentANDREW H. VAN TUYL AND JOHN A. YOUNGDepartment of Meteorology, University of Wisconsin, Madison 53706(Manuscript received 14 April 1982, in final form 14 July 1982)ABSTRACT The 8eostrophic adjustment process in a propagating jet maximum is studied through numerical experiments performed with a two-layer, nonlinear primitive equation model

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R. L. DeSOUZA, C. I. ASPLIDEN, M. GARSTANG, N. E. LaSEUR, and Y. HSUEH

Monthly Weather ReviewVOLUME 99, NUMBER 7 JULY 1971UDC M1.667.5:551.510.522(213:2):56l.w1.75:551.507.321.2(729)A LOW-LEVEL JET IN THE TROPICSR. L. DeSOUZA, C. 1. ASPLIDEN, M. GARSTANG, AND N. E. LaSEURDepartment of Meteorology, The Florida State University, Tallahassee, Fla. Y. HSUEHDepartment of Oceanography, The Florida State Universit,, Tallahassee, Fla.ABSTRACT A temporary mesoscale network of pilot balloon stations on a tropical island (Barbados, West Indies

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