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Publish Date: 2 February 2018
The Arctic Winter Special Observing Period (SOP1) of the Year of Polar Prediction* (YOPP) commenced on 1 February 2018. WMO looks forward to the extensive extra observations to be conducted by the YOPP community at numerous Arctic stations, as a part of YOPP-endorsed field campaigns, and by autonomous instruments. These observations will help to shed light on the value of different kinds of measurements for environmental prediction in the Arctic and beyond. Numerical experimentation with these observations and internationally coordinated verification activities, in particular at YOPP...
Publish Date: 10 April 2018
The first of the four Special Observing Periods during the Year of Polar Prediction has been successfully completed on March 31. Station staff from 16 different meteorological stations in the Arctic launched more than 1,900 additional weather balloons from 1 February to 31 March 2018, amounting to up to four extra radiosonde launches per day.