The YOPP Supersite-Model Intercomparison Project (YOPPsiteMIP) is linking observations from selected land-based observatories and ship-based field campaigns with high frequency co-located outputs from numerical weather prediction models during the Special Observing Period during the Year of Polar Prediction (YOPP, May 2017 to June 2019).
A key component of YOPPsiteMIP is the creation of Merged Observatory Data Files (MODFs). The goal is to assemble data from all the sensors at a given land- or ship-based observatory into a single netCDF file that is as similar as possible to the corresponding model output. The corresponding Merged Model Data Files (MMDFs) will use the same nomenclature, metadata, and structure. This unique dataset of paired model output and multivariate observations enables detailed process-based diagnostic and validation studies.
The files comprising the H-K table provide guidelines for creating MODFs and MMDFs. They are available in both human-readable (the PDF file) and machine-readable (the four JSON files) form. The H-K Table relies on standards and conventions commonly used in the earth sciences, including netCDF encoding with CF Conventions. The prescribed metadata make data provenance clear and encourage proper attribution of the observations. These files enable observational groups to create modeler-ready MODFs using current requirements and their software of choice, and give NWP partners guidance in creating comparable model output files.
Hartten, Leslie M., & Khalsa, Siri Jodha S. (2022). The H-K Variable SchemaTable developed for the YOPPsiteMIP (1.1). Zenodo. https://doi.org/10.5281/zenodo.6255667