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A Synoptic Climatology and Composite Analysis of the Alberta Clipper
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ABSTRACT
Surface and upper-air analyses from the ECMWF Tropical Ocean Global Atmosphere (TOGA) dataset are used to construct a climatology of 177 Alberta clippers over 15 boreal cold seasons (October-March) from 1986/87 to 2000/01. The Alberta clipper (hereafter simply clipper) occurs most frequently during December and January and substantially less frequently during October and March. These cyclones generally move southeastward from the lee of the Canadian Rockies toward or just nort...
Related newspaper, magazine, and journal articles from HighBeam Research
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A Synoptic Climatology and Composite Analysis of the Alberta Clipper
Weather and Forecasting
; ABSTRACT Surface and upper-air analyses from the ECMWF Tropical Ocean Global Atmosphere (TOGA) dataset are used to construct a climatology of 177 Alberta clippers over 15 boreal cold seasons (October-March) from 1986/87 to 2000/01. The Alberta clipper (hereafter simply clipper) occurs most
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Lower-Tropospheric Height Tendencies Associated with the Shearwise and Transverse Components of Quasigeostrophic Vertical Motion
Monthly Weather Review
; ABSTRACT The recent suggestion that lower-tropospheric cyclogenesis is predominantly a result of column stretching associated with the updraft portion of the shearwise quasigeostrophic (QG) vertical motion is quantified through direct calculation of 900-hPa height tendencies via the QG vorticity
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Clipper fans in GBP1.5M bid to save City of Adelaide
Evening Times
; A LAST-DITCH appeal has been launched to get the world's oldest composite clipper returned to its birthplace. The City of Adelaide - once known as the Carrick - is owned by the Scottish Maritime Museum and has lain at Irvine since 1992, but enthusiasts in Sunderland now want her to be returned
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Surface Cyclones in the ERA-40 Dataset (1958-2001). Part I: Novel Identification Method and Global Climatology
Journal of the Atmospheric Sciences
; ABSTRACT A novel method is introduced to generate climatological frequency distributions of meteorological features from gridded datasets. The method is used here to derive a climatology of extratropical cyclones from sea level pressure (SLP) fields. A simple and classical conception of cyclones is
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The Rapid Growth and Decay of an Extratropical Cyclone over the Central Pacific Ocean
Weather and Forecasting
; ABSTRACT The life cycle of a central Pacific cyclone, characterized by a 48-h interval of rapid fluctuation in its intensity, is examined. The cyclone of interest underwent a period of explosive cyclogenesis from 1200 UTC 4 November to 1200 UTC 5 November 1986, followed 12 h later by a period of
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A Synoptic Climatology of the Subtropical Kona Storm
Monthly Weather Review
; ... 813-829. Hoskins, B. J., M. E. McIntyre, and A. W. Robertson, 1985: On the use and significance of isentropic potential vorticity maps. Quart. J. Roy. Meteor. Soc., 111, 877-946. Kidson, J. W., M. J. Revell, B. Bhaskaran, A. B. Mullan, and J. A. Renwick, 2002 ...
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The Effect of Latent Heat Release on the Evolution of a Warm Occluded Thermal Structure
Monthly Weather Review
; ... local maxima in [theta] on such "tropopause maps" correspond to local minima in upper-tropospheric ... maxima in PV. Figure 11 shows the tropopause maps from both simulations at 6-h intervals ... clef structure appears in the tropopause maps of Thorncroft et al. (1993) in their analysis ...
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Composite Analysis of Winter Cyclones in a GCM: Influence on Climatological Humidity
Journal of Climate
; ABSTRACT The role of midlatitude baroclinic cyclones in maintaining the extratropical winter distribution of water vapor in an operational global climate model is investigated. A cyclone identification and tracking algorithm is used to compare the frequency of occurrence, propagation
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Tropical Pacific and Atlantic Climate Variability in CCSM3
Journal of Climate
; ... at both resolutions. Warm-minus-cold ENSO composite difference maps of surface temperature (SST over oceans and air temperature over ... atmospheric model itself. Warm-minus-cold ENSO composite difference maps of surface temperature and precipitation during JJA are shown ...
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The Sensitivity of Numerical Forecasts to Convective Parameterization: A Case Study of the 17 February 2004 East Coast Cyclone
Weather and Forecasting
; ABSTRACT The sensitivity of numerical model forecasts of coastal cyclogenesis and frontogenesis to the choice of model cumulus parameterization (CP) scheme is examined for the 17 February 2004 southeastern U.S. winter weather event. This event featured a complex synoptic and mesoscale environment,
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