walloon agricultural research centre (cra-w ... · validation tools : step 1 data check • human...
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![Page 1: Walloon Agricultural Research Centre (CRA-W ... · Validation tools : step 1 data check • Human procedures –monthly indicators ... • June 2013 • Human procedures –monthly](https://reader034.vdocument.in/reader034/viewer/2022043003/5f80a59f1f8f1c50e7736a72/html5/thumbnails/1.jpg)
Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Walloon Agricultural Research Centre
(CRA-W)
Meteorological data and lateblight
modeling
Version 25/04/2014
China-Europe Workshop of Potato Sustainable and Efficient Productions
Harbin, 24th of July 2015 Damien Rosillon
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
CRA-W : Walloon Agricultural Research Centre
• A public agricultural research centre based in Belgium
• Multidisciplinary research institution
• CRA-W it is
• 500 people
• 300 ha of facilities
• 3 sites
• 16 research units
• 4 research departments
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
CRA-W : Walloon Agricultural Research Centre
Breeding and biodiversity Unit
Farming systems, Territory
and Information
Technology Unit
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Architecture of a warning system
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
CRA-W’s Automatic weather stations network
• 38 automatic weather stations on an area
of 16.844 km²
• 1 weather station for 440 km²
• Average distance between stations : 30 km
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Automatic weather stations network
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
A weather station
7
Raingauge
Ground surface
temperature probe
Wind vane
Air temperature and
relative humidity sensor
Anemometer
Pyranometer
Soil temperature
probe (- 20 cm)
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Automatic weather stations network
• « An automatic weather station is automatic. After its
installation nothing more to do. »
• Wrong!
• Clogged raingauge
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Automatic weather stations network
• « An automatic weather station is automatic. After its
installation nothing more to do. »
• Wrong!
• Blokked raingauge
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Automatic weather stations network
• « An automatic weather station is automatic. After its
installation nothing more to do. »
• Wrong!
• Dust on relative humidity sensor
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Automatic weather stations network
• « An automatic weather station is automatic. After its
installation nothing more to do. »
• Wrong!
• « Hostile » environment
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
• Developpement of a model based on Guntz and Divoux
principles
• Based on past weather data
• Helps the expert to interpret meteorological data.
• Are the meteorological conditions favourable to late blight
development?
• It helps to decide if spraying fungicide is useful or not
• Outputs : a potential infection or fructification periods
• Detection of periods favourable to the infection
• Estimate of the infection gravity
• Measurment of the length of the incubation phase
• Detection of the day where the fructification phase can
happen
Late blight modeling
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Late blight modeling
Infection and level ofgravity
rainfall
Incubation curve
RH curve
T° curve
Cumulateddaily rainfall
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Impact of meteorological data on model outputs• Impact of a slight malfunction of a relative humidity sensor on
the amount of simulated infections
• Scenario 1 : regular situation
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Impact of meteorological data on model outputs
• Underestimation of 5% of RH measurements
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Impact of meteorological data on model outputs
• Overestimation of 5% on RH measurements
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Impact of meteorological data on model outputs
• Model outputs is higlhy dependant on meteorological data
• Wrong meteorological data can lead to wrong decision
• Reliable meteorological data are crucial for a reliable late
blight warning system
• maintenance of weather stations network is crucial
• Maintenance of the site
• Frequent recalibration of the sensors
• …
• meteorological data must be validated
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Meteorological data management
• 40 stations
• 6 sensors per station
• 1 record / hour
• 5760 data a day
• 2.102.400 data a year
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Validation tools : step 1 data check
• Step 1 : Data check : identification of missing or wrong data
• Automatic procedures :• Check if data every hour
• Check by thresholds
• Impossible to entirely automate validation. Automatic procedures are
completed with « human » procedures
• « Human » procedures :• Visual analysis
• Monthly indicators
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Validation tools : step 1 data check
• Human procedures – daily maps
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Validation tools : step 1 data check
• Human procedures – graphic analysis
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Validation tools : step 1 data check
• Human procedures – monthly indicators
region station indic tsa indic_hra indic_ens_cuminc_plu indic_missing
haute_belgique Libramont -0,2 0% 30% 2% 0%
haute_belgique Michamps -0,1 -3% 40% -22% 0%
haute_belgique Amberloup 0 0% -99% 1% 14%
haute_belgique Bergeval 0,7 0% 19% 9% 0%
haute_belgique Willerzie -0,2 3% 10% 9% 0%
haute_belgique MOYENNE 0 0% 0% 0% 3%
gaume Chassepierre 0,1 2% -5% 22% 0%
gaume Schockville -0,4 0% 6% -16% 0%
gaume Ruette 0,4 -2% 0% -6% 0%
gaume MOYENNE 0 0% 0% 0% 0%
intermediaire Chimay 0 0% 2% 1% 0%
intermediaire Ferrieres -0,5 -4% -14% -4% 0%
intermediaire Haut-le-Wastia 0 3% 16% -7% 0%
intermediaire Jemelle -0,1 2% -1% 2% 0%
intermediaire Seny 1 -5% -14% -19% 0%
intermediaire Jevoumont -0,4 4% 12% 26% 0%
intermediaire MOYENNE 0 0% 0% 0% 0%
moyenne_belgiqueLouvain-la-Neuve 0,3 -4% 13% -34% 0%
moyenne_belgiqueFloriffoux -0,7 2% 1% -16% 0%
moyenne_belgiqueLeuze -0,1 -5% -2% -18% 0%
Indicateurs
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Validation tools : step 1 data check
• June 2013
• Human procedures – monthly indicators
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Validation tools : step 1 data check
• Human procedures – monthly indicators
• August 2013
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Validation tools : step 2 data correction
• Step 2 : Correction
• Integrated tools to correct the data• Linear interpolation
• Spatial interpolation
• Data translation
Validated meteorological data are sent to the model
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Next steps
• « Field scale » decision support system• Virtual weather stations network
• Use of grid data
• GIS technics
Source : Racca Paolo et al., « Decision
Support Systems in Agriculture :
Administration of Meteorological Data,
Use of GIS and Validation methods in
crop protection warning service ».
ZEPP Germany
• Weather forecast integration
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Conclusions
• What ever the source of the data :• Observation from weather station network
• Grid data
• Weather forecast
• Quality weather data are crucial for a quality decision support
system
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
• Websites :
• www.pameseb.be (weather station network website)
• www.cra.wallonie.be
• Damien Rosillon : [email protected]
• +32 61231010
Contact
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Walloon Agricultural Research CentreAgriculture and Natural Environment Department
Farming systems, Territory and Information Technology Unitwww.cra.wallonie.be
Thank you for your attention