<p>The warning system model «Carrot rust fly temperature» is based on a Finnish temperature-based model (Markkula <em>et al</em>, 1998; Tiilikkala & Ojanen, 1999; Markkula <em>et al</em>, 2000). The model determines the start of the flight period for the 1st and 2nd generation of carrot rust fly based on accumuleted degree-days (day-degrees) over a base temperature of 5,0 °C. VIPS uses the model for the 1st generation only.</p>
<p>Standard air temperature (temperature measured 2 m above ground) is used in the model. Degree-days are defined for this model as the sum of the difference between a base temperature of 5,0 °C and the mean temperature for all days with a temperature >5,0 °C, in other words (daily mean temperature – 5,0 °C) from 1 March (beginning when the ground has thawed).</p>
<p>< href=\"https://www.vips-landbruk.no/forecasts/models/PSILARTEMP/\" target=\"new\">Complete model description</p>
<p>< href=\"https://www.vips-landbruk.no/forecasts/models/PSILARTEMP/\" target=\"new\">Complete model description</a></p>
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"wms_enable_request" "*"
"wms_title.en" "Carrot rust fly (Psila rosae) temperature model"