Preprints
https://doi.org/10.5194/essd-2023-497
https://doi.org/10.5194/essd-2023-497
23 Jan 2024
 | 23 Jan 2024
Status: this preprint is currently under review for the journal ESSD.

Special Observing Period (SOP) Data for the Year of Polar Prediction site Model Intercomparison Project (YOPPsiteMIP)

Zen Mariani, Sara Morris, Taneil Uttal, Elena Akish, Robert Crawford, Laura Huang, Jonathan Day, Johanna Tjernström, Øystein Godøy, Lara Ferrighi, Leslie Hartten, Jareth Holt, Christopher Cox, Ewan O'Connor, Roberta Pirazzini, Marion Maturilli, Giri Prakash, James Mather, Kimberly Strong, Pierre Fogal, Vasily Kustov, Gunilla Svensson, Michael Gallagher, and Brian Vasel

Abstract. The rapid changes occurring in the polar regions require an improved understanding of the processes that are driving the changes. At the same time increased human activities, such as marine navigation, resource exploitation, aviation, commercial fishing, and tourism, require reliable and relevant information. One of the primary goals of the World Meteorological Organization’s Year of Polar Prediction (YOPP) Project is to improve the accuracy of numerical weather prediction (NWP) at high latitudes. During YOPP, two Canadian observatories were commissioned and equipped with new ground-based instruments for enhanced meteorological and system process observations that are considered to be “supersites” for addressing YOPP objectives, while other pre-existing supersites in Canada, the United States, Norway, Finland and Russia provided data from ongoing long-term observing programs. Data from these seven supersites were amalgamated and are being used to evaluate NWP systems from several international forecast centers and to perform meteorological process studies with the aim of improving NWP performance in the Polar Regions. In order to increase data useability and station interoperability, novel Merged Observatory Data Files (MODFs) have been created for these seven international supersites over two Special Observing Periods (February to March 2018 and July to September 2018). All observations collected at the seven supersites were compiled into this new standardized NetCDF MODF format, simplifying the process of conducting pan-Arctic NWP verification and process evaluation studies. This paper describes the seven Arctic YOPP supersites, data collection and processing methods, and the novel MODF format and output files, which together comprise the observational contribution to the associated model intercomparison effort, termed YOPP supersite Model Intercomparison Project (YOPPsiteMIP). All YOPPsiteMIP MODFs are publicly accessible via the YOPP Data Portal (Whitehorse: https://doi.org/10.21343/a33e-j150, Iqaluit: https://doi.org/10.21343/yrnf-ck57, Sodankylä: https://doi.org/10.21343/m16p-pq17, Utqiaġvik: https://doi.org/10.21343/a2dx-nq55, Tiksi: https://doi.org/10.21343/5bwn-w881, Ny-Ålesund: https://doi.org/10.21343/y89m-6393, Eureka: https://doi.org/10.21343/r85j-tc61), hosted by MET Norway, with corresponding output from NWP models.

Zen Mariani, Sara Morris, Taneil Uttal, Elena Akish, Robert Crawford, Laura Huang, Jonathan Day, Johanna Tjernström, Øystein Godøy, Lara Ferrighi, Leslie Hartten, Jareth Holt, Christopher Cox, Ewan O'Connor, Roberta Pirazzini, Marion Maturilli, Giri Prakash, James Mather, Kimberly Strong, Pierre Fogal, Vasily Kustov, Gunilla Svensson, Michael Gallagher, and Brian Vasel

Status: open (until 18 Mar 2024)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
Zen Mariani, Sara Morris, Taneil Uttal, Elena Akish, Robert Crawford, Laura Huang, Jonathan Day, Johanna Tjernström, Øystein Godøy, Lara Ferrighi, Leslie Hartten, Jareth Holt, Christopher Cox, Ewan O'Connor, Roberta Pirazzini, Marion Maturilli, Giri Prakash, James Mather, Kimberly Strong, Pierre Fogal, Vasily Kustov, Gunilla Svensson, Michael Gallagher, and Brian Vasel

Data sets

MODF for Iqaluit Airport, Iqaluit, Nunavut, Canada during YOPP SOP1 and SOP2 L. Huang, Z. Mariani, and R. Crawford https://doi.org/10.21343/yrnf-ck57

MODF for Erik Nielsen Airport, Whitehorse, Canada during YOPP SOP1 and SOP2 L. Huang, Z. Mariani, and R. Crawford https://doi.org/10.21343/a33e-j150

Merged observation data file for Sodankylä E. O'Connor https://doi.org/10.21343/m16p-pq17

MODF for Utqiaġvik, Alaska, during YOPP SOP1 and SOP2 E. Akish and S. Morris https://doi.org/10.21343/a2dx-nq55

MODF for Tiksi, Russia, during YOPP SOP1 and SOP2 E. Akish and S. Morris https://doi.org/10.21343/5bwn-w881

Merged Observatory Data File (MODF) for Ny Ålesund J. Holt https://doi.org/10.21343/y89m-6393

MODF for Eureka, Canada, during YOPP SOP1 and SOP2 E. Akish and S. Morris https://doi.org/10.21343/r85j-tc61

Model code and software

MODF Maker Toolkit M. Gallagher, J. Holt, and J. Tjernström https://gitlab.com/mdf-makers/mdf-toolkit

Zen Mariani, Sara Morris, Taneil Uttal, Elena Akish, Robert Crawford, Laura Huang, Jonathan Day, Johanna Tjernström, Øystein Godøy, Lara Ferrighi, Leslie Hartten, Jareth Holt, Christopher Cox, Ewan O'Connor, Roberta Pirazzini, Marion Maturilli, Giri Prakash, James Mather, Kimberly Strong, Pierre Fogal, Vasily Kustov, Gunilla Svensson, Michael Gallagher, and Brian Vasel

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Short summary
During the Year of Polar Prediction (YOPP) we increased measurements in the polar regions and have made dedicated efforts to centralize and standardize all of the different types of data sets that have been collected to facilitate user uptake and model-observation comparisons. This paper is an overview of those efforts and a description of the novel standardized Merged Observation Data Files (MODF), including a description of the sites, data format, and instruments.
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