Has the Conversion of Natural Wetlands to Agricultural Land Increased the Incidence and Severity of Damaging Freezes in South Florida

Abstract On several occasions, winter freezes have wrought severe destruction on Florida agriculture. A series of devastating freezes around the turn of the twentieth century, and again during the 1980s, were related to anomalies in the large-scale flow of the ocean–atmosphere system. During the twentieth century, substantial areas of wetlands in south Florida were drained and converted to agricultural land for winter fresh vegetable and sugarcane production. During this time, much of the citrus industry also was relocated to those areas to escape the risk of freeze farther to the north. The purpose of this paper is to present a modeling study designed to investigate whether the conversion of the wetlands to agriculture itself could have resulted in or exacerbated the severity of recent freezes in those agricultural areas of south Florida. For three recent freeze events, a pair of simulations was undertaken with the Regional Atmospheric Modeling System. One member of each pair employed land surface proper...

[1]  J. Rogers.  The Association between the North Atlantic Oscillation and the Southern Oscillation in the Northern Hemisphere , 1984 .

[2]  Roger A. Pielke,et al.  The impact of anthropogenic land-cover change on the Florida Peninsula Sea Breezes and warm season sensible weather , 2004 .

[3]  John S. Kain,et al.  Convective parameterization for mesoscale models : The Kain-Fritsch Scheme , 1993 .

[4]  J. Louis.  A parametric model of vertical eddy fluxes in the atmosphere , 1979 .

[5]  D. Lettenmaier,et al.  A Long-Term Hydrologically Based Dataset of Land Surface Fluxes and States for the Conterminous United States* , 2002 .

[6]  R. Pielke,et al.  The Influence of Anthropogenic Landscape Changes on Weather in South Florida , 1999 .

[7]  William R. Cotton,et al.  A one-dimensional simulation of the stratocumulus-capped mixed layer , 1983 .

[8]  Roger A. Pielke,et al.  Coupled Atmosphere–Biophysics–Hydrology Models for Environmental Modeling , 2000 .

[9]  Mary W. Downton,et al.  The freeze risk to Florida citrus. Part II. Temperature variability and circulation patterns , 1993 .

[10]  R. Reynolds,et al.  The NCEP/NCAR 40-Year Reanalysis Project , 1996, Renewable Energy.

[11]  Chester F. Ropelewski,et al.  North American Precipitation and Temperature Patterns Associated with the El Niño/Southern Oscillation (ENSO) , 1986 .

[12]  Response of Florida citrus growers to the freezes of the 1980s , 1991 .

[13]  R. Pielke,et al.  A comprehensive meteorological modeling system—RAMS , 1992 .

[14]  James W. Jones,et al.  El Niño–Southern Oscillation Impacts on Winter Vegetable Production in Florida* , 1999 .

[15]  Roger A. Pielke,et al.  Vegetation, water, humans and the climate; a new perspective on an interactive system , 2004 .

[16]  John A. Attaway,et al.  A History of Florida Citrus Freezes , 1997 .

[17]  R. Rohli,et al.  Florida Citrus Freezes and Polar Anticyclones in the Great Plains , 1991 .

[18]  G. Mellor,et al.  A Hierarchy of Turbulence Closure Models for Planetary Boundary Layers. , 1974 .

[19]  Thomas M. Smith,et al.  Improved Global Sea Surface Temperature Analyses Using Optimum Interpolation , 1994 .

[20]  P. Waylen.  Statistical analysis of freezing temperatures in Central and Southern Florida , 1988 .

[21]  W. Weischet,et al.  Citrus in Florida. Ecological management and nature´s latest intervention through freeze , 1987 .

[22]  John M. Wallace,et al.  Planetary-Scale Atmospheric Phenomena Associated with the Southern Oscillation , 1981 .