Atmospheric River Tracking Method Intercomparison Project (ARTMIP) Tier 2 C20C+ developer catalogues. Each ARTMIP method/algorithm (named by the developer) submits a catalogue comprised of 0's (no AR exists) or 1's (yes AR exists) for each time slice, for each grid point, using a curated set of output from the Climate of the 20th Century Plus Detection and Attribution project (C20C+). Simulations came from the Community Atmosphere Model's finite-volume dynamical core version at 25 km horizontal resolution, which was run by Lawrence Berkeley National Laboratory. Catalogues were created for three historical (All-Hist) ensemble members (run002: 1979 - 2005, run006: 1995 - 2005, run008: 1995 - 2005) and two RCP 8.5 (PlusRCP85) ensemble members (run001: 2079 - 2099, run002: 2079 - 2084). Derived C20C+ quantities required for algorithms, such as IVT or IWV, were computed by the ARTMIP project so that all methods use the same data.
There are some exceptions to the continuity of the simulations mentioned above due to missing data. The impact this missing data has on each algorithm depends on their construction. Data issues include: (1) All-Hist run002 — for prw/u850/v850 missing the year 1981, the first timestep (01 Jan 00 UTC) for the years 1985 - 2005, the timesteps 10 Dec 2005 03 UTC to 31 Dec 2005 21 UTC; for vhusavi/uhusavi/windhusavi missing the first four timesteps of (01 Jan 00 UTC to 01 Jan 09 UTC) for the year 1981, the first timestep (01 Jan 00 UTC) for the year 1985, the timesteps 05 Mar 03 UTC to 06 Mar 00 UTC and 08 Mar 03 UTC to 09 Mar 00 UTC for the year 1992, the timesteps 02 Jan 03 UTC to 03 Jan 00 UTC for the year 1993, the timesteps 09 Dec 03 UTC to 10 Dec 00 UTC for the year 2005, (2) PlusRCP85 run001 — for vhusavi/uhusavi/windhusavi/prw/u850/v850 missing the timesteps 01 Jul 03 UTC to 04 Jul 21 UTC of the year 2080; for vhusavi/uhusavi/windhusavi missing the timesteps 03 Sep 00 UTC to 31 Dec 21 UTC of the year 2082, (3) PlusRCP85 run002 — for vhusavi/uhusavi/windhusavi missing the timesteps 23 Sep 00 UTC to 31 Dec 21 UTC for the year 2084; for prw/u850/v850 missing the timesteps 01 Sep 00 UTC to 31 Dec 21 UTC for the year 2084. The mundhenk_v3 algorithm did not supply ARDT catalogues for All-Hist.run006, All-Hist.run008, PlusRCP85.run002 ensemble members.
