Australian region cyclone tracks from RCMs

This folder contains cyclone tracks generated for Pepler and Dowdy (2022) <br> These cyclones were identified using the Murray and Simmonds (1991) and Simmonds et al. (1999) cyclone tracking scheme. The source code and documntation is available at https://cyclonetracker.earthsci.unimelb.edu.au/ Tracks are provided for 12 RCM simulations over the Australian region for 1980-2009 and 2070-2099 based on rcp8.5. Surface cyclones are tracked using 6-hourly MSLP, and upper cyclones are tracked using daily 500 hPa geopotential height. <br> Cyclones are tracked using weak Laplacian minimums of 0.5 hPa (deg.lat.)^-2 at the surface and 1 m (deg.lat.)^-2 at 500 hPa; this is weaker than the final minima applied in the paper (0.8 and 6 respectively), in case users are interested in weaker systems. <br> Filenames are structured as: Upper: UM_lows_$RCM_$GCM_$RCP_500hPa_proj100_rad2cv1_bigaust_daily_fixes.csv Surface: UM_lows_$RCM_$GCM_$RCP_proj100_rad2cv0.5_bigaust_fixes.csv <br> **Proj100 - Indicates the cyclones were tracked on this projection, an ~ 1.5 degree polar grid **Rad2cvXX: Indicates the radius that laplacian was calculated over and the minimum used for tracking **Daily indicates the lows were tracked using daily mean fields rather than 6-hourly fields. **CCAM files are given by years rather than RCP, as the historical and RCP8.5 forcings were combined into a single simulation. <br> <br> Column headings: ID Track ID Fix Instance within track Date Date (UTC) Time Time (UTC) Open/closed Is there closed circulation (0) or an "open" low Lon Longitude Lat Latitude MSLP Central pressure (hPa) Laplacian Laplacian of MSLP (hPa. Deg.lat^2), which represents the curvature of the MSLP. This is a better indicator of the strength of a system Depth Depth of cyclone relative to background pressure (hPa) Radius Radius of anticyclone (degrees) Up Steering velocity (U) Vp Steering velocity (V) Location 1 indicates whether a cyclone is currently in the greater Australian region (100-180E, 10-60S, noting not all RCMs have tracks for the whole domain) <br> Tracking parameters are consistent with CMIP5 cyclones tracked for Pepler and Dowdy (2021), see https://doi.org/10.6084/m9.figshare.13393172.v1 <br> References: Murray, R. J., and I. Simmonds, 1991: A numerical scheme for tracking cyclone centres from digital data. Part I: Development and operation of the scheme. Aust. Meteorol. Mag., 39, 155166. Simmonds, I., R. J. Murray, and R. M. Leighton, 1999: A refinement of cyclone tracking methods with data from FROST. Aust. Meteorol. Mag., (special edition), 3549. Pepler, A. and Dowdy, A. 2022: Australia's future extratropical cyclones <br>