The System for Classification of Low-Pressure Systems (SyCLoPS) Dataset (Based on ERA5)

This is the ERA5 System for Classification of Low-Pressure Systems (SyCLoPS) dataset version 4. Details of SyCLoPS algorithms are described in the paper titled The System for Classification of Low-Pressure Systems (SyCLoPS): An All-in-One Objective Framework for Large-scale Data sets published on J. Geophys. Res. Atm.: https://doi.org/10.1029/2024JD041287 We keep the most up-to-date version of the SyCLoPS user manual online at THIS PLACE. A newer version (version 5) has been published to fix defficiencies found in this version. Here are the updates in this version: (1) Adjusted the standard for marking extratropical transition (EXT) nodes in the SyCLoPS classified catalog to minimize the EXT time error compared to the records in the International Best Track Archive for Climate Stewardship (IBTrACS). Therefore, EXT nodes denoted in the Track_Info column are slightly different from the last version. (2) Enhanced the SyCLoPS classifier Python program to allow the user to select a mode (to skip some parts of the procedures) and a data format option (about data frequency and availability) before running through the program. (3) Added a sample input list file for TempestExtreme's (TE) DetectNodes. The following resultant datasets are provided: The input LPS catalog: "SyCLoPS_input.parquet" The output classified LPS catalog: "SyCLoPS_classified.parquet" The labeled size blobs of each year: "size_blobs_1979_2022.tar.gz" The labeled precipitation blobs of each year: "preci_blobs_1979_2022.tar.gz" The size and precipitation blob tag files each have 44 compressed nc files for each year. These detected blobs are not a part of the SyCLoPS framework. They are produced to demonstrate a potential application of SyCLoPS. For more details, please see the end of supporting information text S6 of the SyCLoPS paper and section 3.2 of the SyCLoPS user manual.The following script files are provided: The SyCLoPS classifier: “SyCLoPS_classifier.py” Blob-node pairing and LOWSIZE calculator: “Blob_idtag.py" The shell script containing TE command lines: "TE_commands.sh" Additional TE commands for tagging (masking) blobs: "TE_optional.sh" A sample TE input file that contains a list of required ERA5 variable filenames: "DetectNodes_inputfile_example.txt" Please contact Yushan Han ([e-mail]) if you have questions about the SyCLoPS framework. Please contact Paul Ullrich ([e-mail]) if you have any questions about the TE software.