Site-Specific Weather Data Site-Specific Weather Data for Disease Forecasting: for Disease Forecasting: Reality or Pipe Dream? Reality or Pipe Dream? Bob Seem Cornell University New York State Agricultural Experiment Station Geneva, NY 14456 Midwest Weather Group Meeting 25 July 2008
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Site-Specific Weather Data for Disease Forecasting: Reality or Pipe Dream? Bob Seem Cornell University New York State Agricultural Experiment Station Geneva,
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Site-Specific Weather DataSite-Specific Weather Datafor Disease Forecasting:for Disease Forecasting:Reality or Pipe Dream?Reality or Pipe Dream?
Bob SeemCornell University
New York State Agricultural Experiment StationGeneva, NY 14456
Midwest Weather Group Meeting 25 July 2008
What is site-specific weather?
Weather data and associated information determined for a specific location (lon-lat) or grid-based information at a resolution of ~1km2
Why is site-specific weather important?
• Emerging alternative to regional-scale data
• Incorporates local physiographic features
• Economical alternative to automatic weather stations
• Natural link to disease forecasts and graphical representation of disease risk
Examples of site-specific weather implementation
• Application of mesoscale weather models
• Application of NWS numerical forecast models
• Application of statistical/interpolation schemes
Mesoscale Models
• MM5• North Amercian Meso (NAM,
formerly Eta)• MASS (LAWSS)• WRF
Input PreprocessorsSurface Data
Climatic Data
Raw Data
f
ModelsLAWSS
SWEB
DMCast
Elevation, Landuse …
NDVI, SST …
Reanalysis, AWS …
Temp, RH, Wind, Rad …
Leaf wetness …
Downy Mildew Risk …
Output Processing
Data Transformation
Data Analysis
Merging, Concatenation
Mapping, Plotting …
Sample output - weather variables
Variable Name UnitSurface Air Temperature CAir Temperature at 2m CSkin Temperature CDew Point Temperature CU Wind m/sV Wind m/sAltimeter Setting mbSensible Heat Flux W/m**2Latent Heat Flux W/m**2Total Evaporation mmTotal Shortwave Radiation MJ/m**2Outgoing IR Radiation W/m**2Cloud Cover fractionMean RH SFC - 500MB percentTotal Precipitation mmShallow Soil Layer Water Content vol. fractionCover Layer Water Content m
Agreement ratio between observed and simulated data during:
the entire simulation non-rainy days
Geneva(42.9N, 77.0W)
Wetness > 0.1 33/62 (53%) 28/32 (88%)
DMrisk > 0 41/62 (66%) 28/32 (88%)
Fredonia(42.7N, 78.9W)
Wetness > 0.1 39/62 (63%) 28/37 (76%)
DMrisk > 0 36/62 (58%) 27/37 (73%)
Weather Research and Forecast (WRF) Model
A next-generation mesocale numerical weather prediction system designed to serve both operational forecasting and atmospheric research needs. It features multiple dynamical cores, a 3-dimensional variational data assimilation system, and a software architecture allowing for computational parallelism and system extensibility. WRF is suitable for a broad spectrum of applications across scales ranging from meters to thousands of kilometers.
www.wrf-model.org
USDA/ZedXSoybean Rust PIPE
24-Hour Precip and RH
USDA/ZedXSoybean Rust PIPE
Spore Wet Deposition
USDA/ZedXSoybean Rust PIPE
Soybean Development Stages
USDA/ZedXSoybean Rust PIPE
Rust Development Stages
NWS numerical forecast models
• Resolution not as high as mesoscale models
• Convergence is occurring• Products greatly increased and