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The Columbia, Missouri, Heat Island Experiment (COHIX) and the Influence of a Small City on the Local Climatology
(Missouri Academy of Science, 2004-05)
The heat island effect is a well known feature in the microclimate of urban areas but only a few studies have addressed the effect for smaller urban areas. We examine here the impact of Columbia, Missouri and the University ...
Determining the Spring to Summer Transition in the Missouri Ozarks Using Synoptic Scale Atmospheric Data
(Missouri Academy of Science, 2002-12)
There is abundant anecdotal evidence available to suggest that the transition from a spring to summer season flow regime is often quite abrupt. This same transition renders longrange forecasting problematic as the forecast ...
Ageostrophic Forcing in a Height Tendency Equation
(American Meteorological Society, 2002-01)
The role of the ageostrophic vorticity tendencies in the Zwack-Okossi vorticity tendency equation has been examined within the context that this term in the equation acts as a correction term for the vorticity tendency or ...
The Application of a Simple Method for the Verification of Weather Forecasts and Seasonal Variations in Forecast Accuracy
(American Meteorological Society, 2002-08)
The evaluation of weather forecast accuracy has always been a difficult subject to address for many reasons. In this study, a simple semiobjective method is used to examine the accuracy of zone forecasts issued by the ...
The Planetary- and Synoptic-Scale Interactions in a Southeast Pacific Blocking Episode Using PV Diagnostics
(American Meteorological Society, 2005-06)
The synoptic- and planetary-scale forcing in two blocking anticyclones occurring over the southeast Pacific Ocean was examined using potential vorticity diagnostics. While many studies have examined the dynamic and ...
Further studies of the heat island associated with a small midwestern city
(Royal Meteorological Society, 2008-09)
Recently, the University of Missouri (UM) moved its SuomiNet station from the roof
of a building near downtown Columbia, Missouri, USA, to the University's rural South Farm. Comparisons of Columbia Regional Airport (KCOU) ...
An analysis of a long-lived MCV observed over the Southern Plains using Potential Vorticity diagnostics.
(National Weather Association, 2000-09)
On the morning of 28 May 1998, a mesoscale convectively-generated vortex (MCV) was
observed over the Southern Plains. This MCV was evident in the GOES-8 visual satellite
imagery resulting in a spectacular picture. An ...
Assessment of the Impact of the Planetary Scale on the Decay of Blocking and the Use of Phase Diagrams and Enstrophy as a Diagnostic
(Pleiades Publishing, 2007-01)
It was shown that abrupt changes in the large-scale structure of atmospheric flows may lead to the rapid decay of blocking. Analysis of phase diagrams made it possible to identify when sharp changes occurred in the dynamics ...
Dynamics of Eddy-Driven Low-Frequency Dipole Modes. Part I: A Simple Model of North Atlantic Oscillations
(American Meteorological Society, 2007-01)
A simple theoretical model is proposed to clarify how synoptic-scale waves drive the life cycle of the North Atlantic Oscillation (NAO) with a period of nearly two weeks. This model is able to elucidate what
determines ...
Calculated Height Tendencies in Two Southern Hemisphere Blocking and Cyclone Events: The Contribution of Diabatic Heating to Block Intensification
(American Meteorological Society, 2008-09)
The Zwack-Okossi vorticity tendency equation was used to calculate 500-hPa height tendencies in two intensifying Southern Hemisphere blocking events. The National Centers for Environmental Prediction-
National Center for ...
Dynamics of Eddy-Driven Low-Frequency Dipole Modes. Part II: Free Mode Characteristics of NAO and Diagnostic Study
(American Meteorological Society, 2007-01)
Through calculating the scatter diagrams of the streamfunction ( P or T) versus potential vorticity (PV)(qP or qT), where P and T are the planetary-scale streamfunction and total streamfunction, respectively, and using ...
A comparison of two cases of low-latitude thundersnow
(Centro Ciencias Atmosfera UNAM, 2009-03)
Two cases of low-latitude snow with lightning are studied to determine their characteristics. Both cases had synoptic-scale origins, but also featured smaller-scale influences (e. g. orographic lift and elevated instability).The ...
The Interannual variability of hurricane activity in the Atlantic and east pacific regions
(National Weather Association, 2008-07)
The investigation of the interannual and interdecadal variations in hurricane activity has been an important topic of study lately, especially with regard to their implications for climate change issues. On the interannual ...
Interannual variability of tropical cyclone activity in the southern South China Sea
(American Geophysical Union, 2008-03)
A study of tropical storm activity in the southern South China Sea region was carried
out for the period of 1960 to 2006 using data obtained from the UNISYS website archive, which was provided to them from the Joint Typhoon ...
South American Cold Surges: Types, Composites, and Case Studies
(American Meteorological Society, 2001-05)
This paper examines the climatological, large-scale, and synoptic-scale aspects of South American cold surges using NCEP-NCAR gridded reanalyses for the 1992-96 period. Three common cold surge types are identified on the ...
A Diagnosis of the Explosive Development of Two Extratropical Cyclones
(American Meteorological Society, 1992-08)
This paper examines the 24-h explosive development periods of two extratropical cyclones, the first occurring over the Gulf Stream off the coast of New England from 18 to 19 January 1979 and the second occurring over the ...
Interannual and interdecadal variability in the predominant Pacific region SST anomaly patterns and their impact on climate in the mid-Mississippi valley region
(Centro Ciencias Atmosfera UNAM, 2007-02)
Previous research has demonstrated that Pacific Region SSTs and SST anomalies can be separated into seven general synoptic classifications (“clusters”) (A-G). Clusters B and G (C, D, and F) [A and E] were shown to be ...
Using the monthly classification of global SSTs and 500 HPA height to predict temperature and precipitation regimes one to two season in advance for the Mid-Mississippi Region
(National Weather Association, 2008-07)
Using the results from previous studies of the interannual variability of local mean monthly temperature and precipitation by this group, long range forecasts were generated for summer and winter season temperatures and ...
The Climatology of Blocking Anticyclones for the Northern and Southern Hemispheres: Block Intensity as a Diagnostic
(American Meteorological Society, 2002-12)
A 30-yr climatology of blocking events was compiled by stratifying the data into seasonal and three regional categories for both the Northern and Southern Hemispheres using the NCEP-NCAR reanalyses. Several characteristics ...
The Presentation of Precipitation Information in Television Broadcasts: What is Normal?
(2008)
In a typical weather broadcast, observed precipitation information such as the daily amount that fell and the accumulated monthly total are shown and compared to the mean monthly average or “normal” precipitation. Such ...