Summertime Precipitation Regimes Associated with the Sea Breeze and Land Breeze in Southern Mississippi and Eastern Louisiana

Hill, Charles H.; Fitzpatrick, Patrick J.; Corbin, James H.; Lau, Y.; Bhate, S.K.

doi:10.1175/2010waf2222340.1

Cited by 30 publications

(24 citation statements)

References 33 publications

(27 reference statements)

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“…It is interesting to note that the highest average precipitable water (49.10 mm for 1-60°during [2003][2004][2005][2006][2007] was also associated with one of the lowest average rainfall gauge precipitation totals (4.83 mm or 0.19 inches for 1-60°) ( Table 2). These findings are inconsistent with those of previous research reported above (Dostalek & Schmit, 2001;Hill et al, 2010), but may be due to a more stable air mass.…”

contrasting

confidence: 99%

Explaining the spatial variability of summer rainfall in Pinellas County, Florida using ArcGIS

Schoonard¹,

Collins²,

Paxton³

et al. 2014

Physical Geography

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Pinellas County is a peninsula on the west coast of Florida that receives sea breeze driven convective rainfall during the summer months. To improve forecasting of local mesoscale phenomena, the spatial variability of summer rainfall in Pinellas was examined in relation to dominant wind directions and speeds, atmospheric stability, and atmospheric moisture content for the months of June, July, and August from 2003 to 2007. Radiosonde data from the Ruskin, Florida National Weather Service (NWS) Station, Pinellas County rain gauge data, and radar-estimated rainfall totals from the NWS Advanced Hydrologic Prediction Service were used to examine different meteorological parameters and their relationships with the spatial variability of summer precipitation across the peninsula. Dominant daily wind direction categories were divided into six 60 degree increments: 1-60°, 61-120°, 121-160°, 161-240°, 241-300°, and 301-360°. Precipitable water had a significant positive correlation with precipitation in four of the six wind direction categories (61-120°, 121-180°, 181-240°, and 241-300°). Higher wind speeds associated with a southerly wind direction revealed significant positive relationships with precipitation. Composites of radar-derived rainfall estimates indicate that rain fell primarily in the center of the peninsula under a variety of wind directions, often with two daily maxima. Composites also show that the greatest potential for high precipitation amounts comes with westerly winds (241-300°).

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contrasting

confidence: 99%

Explaining the spatial variability of summer rainfall in Pinellas County, Florida using ArcGIS

Schoonard¹,

Collins²,

Paxton³

et al. 2014

Physical Geography

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“…Elevated lightning frequencies are observed along the coastlines of the Gulf Coast states and northward up to North Carolina. The primary driver for this enhancement is land-and sea breeze-driven convergence zones creating favorable thunderstorm updraft environments [e.g., Hill et al, 2010]. The high spatial resolution of this climatology reveals an exponential decline in the percentage of CONUS area with higher lightning frequencies ( Figure 1b).…”

Section: Resultsmentioning

confidence: 99%

Antenna structures and cloud‐to‐ground lightning location: 1995–2015

Kingfield

Calhoun

Beurs

2017

Geophysical Research Letters

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Spatial analyses of cloud‐to‐ground (CG) lightning occurrence due to a rapid expansion in the number of antenna towers across the United States are explored by gridding 20 years of National Lightning Detection Network data at 500 m spatial resolution. The 99.8% of grid cells with ≥100 CGs were within 1 km of an antenna tower registered with the Federal Communications Commission. Tower height is positively correlated with CG occurrence; towers taller than 400 m above ground level experience a median increase of 150% in CG lightning density compared to a region 2 km to 5 km away. In the northern Great Plains, the cumulative CG lightning density near the tower was around 138% (117%) higher than a region 2 to 5 km away in the September–February (March–August) months. Higher CG frequencies typically also occur in the first full year following new tower construction, creating new lightning hot spots.

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“…Convection and convergence of low-level winds associated with the sea breeze can increase cloud production and precipitation across the region (e.g., Hill et al 2010;Azorin-Molina et al 2014). Abnormally high temperatures often influence the local and regional winds, which in return modify mesoscale circulations such as the sea breeze.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Low-Level Winds of Southern and Coastal Delaware

Hughes

Veron

2015

Journal of Applied Meteorology and Climatology

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Winds across the Delaware Peninsula transport pollutants, modify the temperature, and play a critical role within the state's agricultural and tourism industries. The low-level winds inland and near Delaware's coastline are characterized using observations from eight meteorological stations operated by the Delaware Environmental Observing System and the National Data Buoy Center from 2005 through 2012. The low-level winds have pronounced dominant directions during the summer (southwest/southeast) and winter (northwest) seasons, with the greatest spatial and temporal variability occurring in the summer. This inhomogeneity was further investigated with a set of simulations of the low-level winds over the Delaware Bay and surrounding landmass using the Weather Research and Forecasting Model for a subset of days from 2006 through 2012. The model was run with three nests, with the inner nest having a 2-km horizontal resolution. The randomly selected days were organized by synoptic type and season. Mesoscale wind events such as the seabreeze circulation introduce significant variability in the local wind field of coastal Delaware-an effect that is seen in both observed and modeled data. Southerly winds off Delaware's coast frequently shift counterclockwise up the Delaware Bay in alignment with the bay coastline. Long-term data from station B44009 (1984-2012) indicate a May decrease (0.03 m s 21 yr 21 ; significance p 5 0.026) and an October increase (0.04 m s 21 yr 21 ; p 5 0.006) of the mean wind speed. Results suggest that the local wind regime is multifaceted and contains significant seasonal, diurnal, and spatial variations.

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Summertime Precipitation Regimes Associated with the Sea Breeze and Land Breeze in Southern Mississippi and Eastern Louisiana

Cited by 30 publications

References 33 publications

Explaining the spatial variability of summer rainfall in Pinellas County, Florida using ArcGIS

Explaining the spatial variability of summer rainfall in Pinellas County, Florida using ArcGIS

Antenna structures and cloud‐to‐ground lightning location: 1995–2015

Characterization of Low-Level Winds of Southern and Coastal Delaware

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