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For three months – from 1 July to 30 September – extensive extra observations will be carried out at numerous land stations in the Arctic, as part of YOPP-endorsed field campaigns and expeditions, and by autonomous instruments. Numerical experimentation and internationally coordinated verification activities will use the additional observations generated during SOP2 for forecast evaluation and observational impact studies. The measurements will enable us to identify ways to improve forecast systems towards more accurate and reliable forecasts of weather and sea-ice conditions in the Arctic, and to provide recommendations for the future Arctic Observing Systems.  

 

Forecast centres will provide model data in unusual detail, in particular for Arctic YOPP Supersites such as the Canadian sites Whitehorse and Iqaluit (for exact locations of YOPP Supersites see the YOPP Observations Layer). The increased radiosonde activity at 6 and 18 UTC has already been noticed by the European Centre for Medium-Range Weather Forecast(ECMWF). An increase in buoy data that is sent to the WMO Global Telecommunication System (GTS) was already perceived since the beginning of June as many of the buoys have been deployed in advance to the start of SOP2. 
Extra observational data which feed into the ECMWF system during SOP can be monitored here (chose different observing systems and regions).

As during the first SOP earlier this year (see here for an overview), many field campaigns and expeditions are carried out by YOPP-endorsed projects to provide specific observational data. These will enable better understanding and representation of environmental processes in the Arctic in weather, climate, and sea ice models. Three examples:

  • The YOPP-endorsed project Arctic Climate Across Scales (ACAS) will embark on the Swedish research icebreaker Oden on 1 August to build an ice camp north of Svalbard and drift on the multiyear ice floe for about five weeks. During the expedition, they will monitor the ice surface and atmospheric column (see more information about ACAS in the current PolarPredictNews #07 issue).

  • As part of the YOPP-endorsed project KPOPS, radiosondes will be launche 4 times daily from 5 August to 17 September over the Chukchi Sea and north of the East Siberian Sea from the Korean research icebreaker Araon. Data will be broadcasted to the GTS whenever the satellite data transmission allows.

  • Extra weather balloons will be launched for YOPP during three cruise legs through the YOPP-endorsed Nansen LEGACY project aboard the Norwegian research vessel RV Kronprins Haakon in the northern Barents Sea. 

Details on these and other YOPP-endorsed projects contributing to the current SOP can be found through the YOPP Explorer.

Follow on twitter and instagram @polarprediction and hashtags #polarprediction and #YOPPextraobs during the Arctic summer SOP.