110 likes | 205 Views
Using Weather data in Agriculture insurance Rapeseed in La Meuse. Salah DHOUIB Weather and Agriculture Covers. Historical rapeseed yield in La Meuse Identification of the underlying weather causes of a bad yield: lack and/or excess rainfall, heat-wave, etc
E N D
Using Weather data in Agriculture insuranceRapeseed in La Meuse Salah DHOUIB Weather and Agriculture Covers
Historical rapeseed yield in La Meuse • Identification of the underlying weather causes of a bad yield: lack and/or excess rainfall, heat-wave, etc • Using weather data to determine the frequency and period of return
Using Historical yield data • Homogeneity Problem due to technical progress in the farming industry • Availability problems: electronic data is not always easy to find • Homogeneity Problem due to classification changes • Target: De-trending data and identifying “bad” years
Rapeseed: Historical and de-trended yield in La Meuse since 1980 3 Low yield years: 83, 92 and 2001
Clear trend up to the nineties due to technical progress • 3 catastrophic years: 1983, 1992 and 2001
Underlying weather causes • Objective • Identifying key weather factors explaining bad yield • How ? • Agronomic knowledge • Analysis of the correlation between extreme historical weather conditions and bad yield
Identifying weather factors: pre-harvest drought • Example : Risk type « 2001 » : May June draught in La Meuse Ressources hydriques fin juin Vs moyenne 1950-2006
May June rainfall in Metz: Meteo-France data 2001 pre-harvest draught
May 15th-June 10th rainfall in Metz: Harvest Period “Flood” 1983, 1992 and 1994 harvest « floods »
Weather data / Yield data correlation • Very complicated compared to say Energy sector • More complicated in Europe where agriculture is less dependent on “Mother Nature” • Bigger distance between weather station and the location of the risk: we need airports near farms • Agriculture uses non-continuous weather phenomena: frost, rainfall, hail • Axis of development: NDVI type of index, Satellite imagery, etc