Wavelet isolation of meridionally moving geopotential height perturbations near the subtropics of eastern Africa and their relationship with the Madden–Julian Oscillation
Sign Up to like & getrecommendations! Published in 2019 at "Quarterly Journal of the Royal Meteorological Society"
DOI: 10.1002/qj.3681
Abstract: Prior to the onset of convection over the western Indian Ocean for many Madden–Julian Oscillation (MJO) events, equatorward‐propagating upper tropospheric negative geopotential height anomalies are observed along the east coast of Africa. To identify these… read more here.
Keywords: madden julian; geopotential height; wavelet; eastern africa ... See more keywords
Meridional movement of geopotential height anomalies in the subtropics and the relationship to the base‐state flow
Sign Up to like & getrecommendations! Published in 2020 at "Quarterly Journal of the Royal Meteorological Society"
DOI: 10.1002/qj.3937
Abstract: Qualities of the meridional movements of geopotential height anomalies in the upper troposphere of the subtropics are analysed via wavelet analysis using a meridional–temporal partial Morlet wavelet. Results show that power, which represents increased presence… read more here.
Keywords: meridional wind; relationship; movement; power ... See more keywords
Frequency of Persistent Blocking and Ridge Events Related to Precipitation over Eastern China during August and Its Preceding Atmospheric Signals
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DOI: 10.1175/waf-d-19-0047.1
Abstract: Based on a recently developed approach that can recognize both persistent blocking and ridge events effectively, the contributions of the frequency of these persistent events (FOPE) over different regions in Eurasia to precipitation over eastern… read more here.
Keywords: preceding atmospheric; persistent blocking; precipitation; geopotential height ... See more keywords
System Predictability Assessed by Low Wavenumber Fourier Components and Analogue Pair Progression of Geopotential Height
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DOI: 10.3390/atmos14050886
Abstract: Following Lorenz’s work using analogue pairs for establishing 10-to-14-day predictability limits for synoptic weather regimes, predictability limits for the Rex block, the long-wave wintertime ridge over the eastern Pacific Ocean and the western United States,… read more here.
Keywords: geopotential height; low wavenumber; predictability; system predictability ... See more keywords
Potential Arctic connections to eastern North American cold winters
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DOI: 10.5817/cpr2017-2-22
Abstract: Far-field temperature and geopotential height fields associated with eastern North American early winter (DEC-JAN) extreme cold events are documented since 1950. Based on 19 cases of monthly extreme cold events, two large-scale patterns emerge. First,… read more here.
Keywords: temperature anomalies; american cold; eastern north; geopotential height ... See more keywords