منابع مشابه
A long-term climatology of North Atlantic polar lows
[1] A dynamical downscaling of the 6-hourly 1948–2006 NCEP/NCAR re-analyses for the subarctic region of the North Atlantic has been used to derive a climatology of polar lows by means of a tracking algorithm based on the simulated bandpass filtered MSLP-fields. This climatology is consistent with the limited observational evidence in terms of frequency and spatial distribution. The climatology ...
متن کاملA comparison of two identification and tracking methods for polar lows
In this study, we compare two different cyclone-tracking algorithms to detect North Atlantic polar lows, which are very intense mesoscale cyclones. Both approaches include spatial filtering, detection, tracking and constraints specific to polar lows. The first method uses digital bandpass-filtered mean sea level pressure (MSLP) fields in the spatial range of 200 600 km and is especially designe...
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C hange control. For me, this vital issue in software project management immediately conjures the image of the famous 1984 Macintosh commercial. Remember that one? Gray drudges standing row upon row, staring with numb compliance at a lecturing bureaucrat , set free by a hero who bursts in and hurls a hammer that breaks the spell of Big Bad Brother. This image depicts my personal struggle with t...
متن کاملHighs and lows in the peripheral vasculature.
In recent years, we have come a long way from categorizing all ankle-brachial indices (ABIs) above 0.90 as normal. Both borderline low and high ABIs present significant risk (1). In this issue of the Journal, Arain et al. (2) at the Mayo Clinic document the risk of a high ABI with the largest such study to date. The authors provide us with remarkable data, presented clearly and concisely, on pa...
متن کاملHighs and lows of community psychiatry
In a perceptive article written 17 years ago, Sumathipala & Hanwella described what they called a spiral of community care. This was derived from evidence over a long time period that society alternates between embracing community psychiatry as an inclusive and positive way of treating the mentally ill, and an exclusive psychiatry at other times, when those with mental illness are perceived as ...
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ژورنال
عنوان ژورنال: Meteorological Monographs
سال: 2003
ISSN: 0065-9401
DOI: 10.1175/0065-9401-31.53.61