Search Results

You are looking at 1 - 6 of 6 items for :

  • Monthly Weather Review x
  • Third THORPEX International Science Symposium x
  • Refine by Access: All Content x
Clear All
William A. Komaromi, Sharanya J. Majumdar, and Eric D. Rappin

within which S1 is selected lies in between two large ridges in an amplified long-wave pattern. The center of the perturbation for S1 is selected to be at the southern end of a short wave over southeast Russia and Mongolia, with a radius of perturbation R = 600 km. This radius is similar to the radius of curvature in the base of the trough, beyond which the flow becomes dominated by the surrounding ridges ( Fig. 3a ). Target S2 is a smaller upper-level trough that becomes cut off from the jet 2

Full access
Sharanya J. Majumdar, Kathryn J. Sellwood, Daniel Hodyss, Zoltan Toth, and Yucheng Song

the targets was ambiguous in most cases. For example, although 850-hPa T is expected to be a useful variable for targeting far upstream, given the high baroclinicity near Japan, it is impossible to track sensitive areas across the Pacific because of low gradients in 850-hPa T . It was found that the most coherent targets were obtained by using a combination of u , υ , and T at 200, 500, and 850 hPa, respectively, capturing the sensitivity in both low-level baroclinic zones and in jet

Full access
Benoît Vié, Olivier Nuissier, and Véronique Ducrocq

southwestward to produce high precipitation over the Aude region ( Fig. 8d , the Gard and Aude regions are shown in Fig. 8b ). Rainfall amounts for case 1 were high, reaching 365 mm in 24 h ( Fig. 8e ). The analysis of low-level conditions ( Fig. 8b ) clearly shows a very strong low-level jet that brings moist, unstable air to the Massif Central foothills. This south to southeasterly jet at 0000 UTC takes a more easterly component beyond 0900 UTC. The upper-level synoptic-scale conditions are shown

Full access
E. A. Irvine, S. L. Gray, J. Methven, and I. A. Renfrew

’s orography on the local airflow, blocking and distorting it, creating southerly barrier winds, creating tip jets in the lee of Greenland, and altering the temperature profiles by introducing strongly stratified elevated layers ( Petersen et al. 2009 ). Sondes placed close to any such steep orography may measure these local effects, which would then make the sonde data unrepresentative of the larger area around it. Unrepresentative data can be removed when the observations are processed (before data

Full access
Munehiko Yamaguchi and Sharanya J. Majumdar

Pacific high. On 15 September (hereafter referred to as the during-recurvature stage of Sinlaku), Sinlaku was located in a confluent area induced by the westerly jet and the southerly flow at the west edge of the Pacific High. On 18 September (hereafter referred to as the after-recurvature stage of Sinlaku), Sinlaku was situated by both features; it was located north of the Pacific high and south of the westerly jet, being advected by the confluent westerlies. b. Specifications

Full access
Mio Matsueda, Masayuki Kyouda, Zoltan Toth, H. L. Tanaka, and Tadashi Tsuyuki

observations on medium-range forecasts of atmospheric flow . Quart. J. Roy. Meteor. Soc. , 134 , 2011 – 2027 . Shutts , G. J. , 1983 : The propagation of eddies in diffluent jet streams: Eddy vorticity forcing of “blocking” flow fields . Quart. J. Roy. Meteor. Soc. , 109 , 737 – 762 . Shutts , G. J. , 1986 : A case study of eddy forcing during an Atlantic blocking episode . Advances in Geophysics, Vol. 29, Academic Press, 135–162 . Szunyogh , I. , Z. Toth , A. V. Zimin , S. J

Full access