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YOPP Arctic Winter Special Observing Period Commences

06-02-2018Source:WMO

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 Supersites where forecast centres will provide model data in unusual detail, will help to elucidate the causes for forecast deficiency and provide guidance for the design of the future polar observing system.

Extra Radiosonde Launches

At various stations across the Arctic, extra radiosondes will be launched at increased frequency (up to six times per day). Numerous national weather services, EUMETNET, and academic research institutions are providing the material and human resources for, overall, more than 1 500 additional radiosonde launches. For an overview of extra radiosoundings during YOPP, including SOP1, please see the kml file for download at http://www.polarprediction.net/yopp-activities/yopp-observations-layer/.

Buoy Deployments

Arctic researchers and collaborators of the International Arctic Buoy Programme (IABP) have been busy distributing autonomous measurement platforms in the Arctic during the past months. Despite substantial progress, a good coverage of the Arctic Ocean with buoys is a continuous challenge. Thanks to a collaboration between the Arctic and Antarctic Research Institute (AARI), EUMETNET, WMO, and IABP, the first few of overall about two dozens of buoys to be distributed close to the Eurasian Arctic coast will be deployed from Cape Baranova and by Russian vessels during the coming two months.

YOPP-endorsed Field Campaigns

A number of field campaigns carried out under challenging winter conditions as part of YOPP-endorsed projects will provide specific measurements that will shed light on key polar processes that need better understanding and representation in weather and climate models. For example, the campaigns MACSSIMIZEand IGP, both with a major airborne component, will scrutinize processes governing the interaction between the ocean or land surface and the peculiar polar atmospheric boundary layer. Details on these and other valuable YOPP-endorsed projects contributing to the current SOP can be found through the YOPP Explorer.

The Year of Polar Prediction (YOPP) is a major international activity that has been initiated by World Meteorological Organization’s World Weather Research Programme (WWRP) as a key component of the Polar Prediction Project (PPP). It takes place from mid-2017 to mid-2019. The overarching goal of YOPP is to significantly advance our environmental prediction capabilities for the polar regions and beyond. As an internationally coordinated period of intensive observing, modelling, prediction, verification, user-engagement and education activities which involves various stakeholders, the Year of Polar Prediction contributes to the knowledge base needed to managing the opportunities and risks that come with polar climate change.

Source: WMO

Editor: Wu Peng