Monthly Weather Review back issues from May 2006:
A Numerical Study of the 1996 Saguenay Flood Cyclone: Effect of Assimilation of Precipitation Data on Quantitative Precipitation Forecasts
May 01, 2006; ... ABSTRACT A one-dimensional variational (1DVAR) technique is applied to assimilate rain gauge precipitation data to extend the predictability of the Saguenay flood cyclone associated with a trough-merger event on 19-21 July 1996 in the Saguenay-Lac-Saint-Jean region of Quebec, ...
Incremental Analysis Updates Initialization Technique Applied to 10-km MM5 and MM5 3DVAR
May 01, 2006; ... ABSTRACT An incremental analysis updates (IAU) technique is implemented for 3-h updates of the fifth-generation Pennsylvania State University-NCAR Mesoscale Model (MM5) three-dimensional variational data assimilation (3DVAR) and model system with a 10-km resolution to remove spurious ...
Surface In Situ Observations within the Outflow of Forward-Flank Downdrafts of Supercell Thunderstorms
May 01, 2006; ... ABSTRACT In the long-standing conceptual model of a supercell thunderstorm, the forward-flank downdraft (FFD) and its associated negative buoyancy originate from precipitation loading and the latent chilling of air due to the melting and evaporation of precipitation. The horizontal ...
Using the Bootstrap Method for a Statistical Significance Test of Differences between Summary Histograms
May 01, 2006; ... ABSTRACT A new method is proposed to compare statistical differences between summary histograms, which are the histograms summed over a large ensemble of individual histograms. It consists of choosing a distance statistic for measuring the difference between summary histograms and using ...
The Role of Anomalously Warm Sea Surface Temperatures on the Intensity of Hurricane Juan (2003) during Its Approach to Nova Scotia
May 01, 2006; ... ABSTRACT When Hurricane Juan tracked toward Nova Scotia, Canada, in September 2003, forecasters were faced with the challenge of predicting the intensity and timing of the hurricane's landfall. There were two competing factors dictating the storm's intensity: 1) the decreasing sea ...
Relationship between SAR-Derived Wind Vectors and Wind at 10-m Height Represented by a Mesoscale Model
May 01, 2006; ... ABSTRACT Wind vectors over the ocean were extracted from a large number of synthetic aperture radar (SAR) images from the European Remote Sensing Satellites (ERS-1 and ERS-2). The wind directions are inferred from the orientation of wind streaks that are imaged by the SAR, while the wind ...
Polar Mesoscale Cyclones in the Northeast Atlantic: Comparing Climatologies from ERA-40 and Satellite Imagery
May 01, 2006; ... ABSTRACT Polar mesoscale cyclones over the subarctic are thought to be an important component of the coupled atmosphere-ocean climate system. However, the relatively small scale of these features presents some concern as to their representation in the meteorological reanalysis datasets ...
A Case Study of Downstream Baroclinic Development over the North Pacific Ocean. Part I: Dynamical Impacts
May 01, 2006; ... ABSTRACT The impact of eddy energy growth and radiation from a western North Pacific cyclone on the intensity of an eastern North Pacific cyclone a few days later is examined. Associated with the western cyclone is an upstream ridge and trough couplet, initially over Siberia on 8 March ...
An Example of the Value of Strong Climatological Signals in Tropical Cyclone Track Forecasting: Hurricane Ivan (2004)
May 01, 2006; ... ABSTRACT Since 1970, tropical cyclone (TC) track forecasts have improved steadily in the Atlantic basin. This improvement has been linked primarily to advances in numerical weather prediction (NWP) models. Concurrently, with few exceptions, the development and operational use of ...