diff --git a/src/main/java/no/nibio/vips/model/psilarosaetempmodel/PsilaRosaeTempModel.java b/src/main/java/no/nibio/vips/model/psilarosaetempmodel/PsilaRosaeTempModel.java
index f9f1317ddf7f544310150d1178644af05b0df1d7..167bd5a6673a6628de1e886e8f4ba30408c14e01 100755
--- a/src/main/java/no/nibio/vips/model/psilarosaetempmodel/PsilaRosaeTempModel.java
+++ b/src/main/java/no/nibio/vips/model/psilarosaetempmodel/PsilaRosaeTempModel.java
@@ -19,8 +19,6 @@
 
 package no.nibio.vips.model.psilarosaetempmodel;
 
-import com.fasterxml.jackson.core.type.TypeReference;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import java.io.IOException;
 import java.text.DecimalFormat;
 import java.util.ArrayList;
@@ -223,8 +221,6 @@ public class PsilaRosaeTempModel extends I18nImpl implements Model {
         // Init data matrix
         this.dataMatrix = new DataMatrix();
         
-        ObjectMapper mapper = new ObjectMapper();
-        
         // Setting timezone
         this.timeZone = TimeZone.getTimeZone((String) config.getConfigParameter("timeZone"));
         //System.out.println("TimeZone=" + this.timeZone);
@@ -232,9 +228,14 @@ public class PsilaRosaeTempModel extends I18nImpl implements Model {
         // Importing weather data, creating collections
         // Can accept both hourly and daily data
         WeatherUtil wUtil = new WeatherUtil();
-        List<WeatherObservation> observations = mapper.convertValue(config.getConfigParameter("observations"), new TypeReference<List<WeatherObservation>>(){});
-        for(WeatherObservation o:observations)
+        
+        List<WeatherObservation> observations = modelUtil.extractWeatherObservationList(config.getConfigParameter("observations"));
+        if(observations ==  null || observations.isEmpty())
         {
+            throw new ConfigValidationException("Please provide weather data.");
+        }
+        for(WeatherObservation o:observations)
+        {          
             switch(o.getElementMeasurementTypeId())
             {
                 case WeatherElements.TEMPERATURE_MEAN:
@@ -260,7 +261,9 @@ public class PsilaRosaeTempModel extends I18nImpl implements Model {
                         this.TM,
                         this.timeZone,
                         15,
-                        WeatherUtil.AGGREGATION_TYPE_AVERAGE);
+                        WeatherUtil.AGGREGATION_TYPE_AVERAGE,
+                        0,
+                        true);
                 for(WeatherObservation obs:dailyTemperatures)
                 {
                     this.dataMatrix.setParamValueForDate(obs.getTimeMeasured(), DataMatrix.TMD, obs);