Forecasts using IFS EPS CY47R3 replicating operations (51 members, TCo639, ORCA025Z75). The ocean state has had a hydrostatically balanced estimate of anthropogenic influence (warming) since 1850-1900 added, such that the total anthropogenic influence is twice estimated at the present day (an equal but opposite perturbation to expid b2nn). The CO2 concentration was set to 625 ppm. This experiment is part of a set of six experiments (each corresponding to a different initial climate state and initialisation date) that were used in "Event attribution of a midlatitude windstorm using ensemble weather forecasts", Ermis et al., 2024, https://doi.org/10.1088/2752-5295/ad4200. We acknowledge the use of ECMWF's computing and archive facilities in this research under the special project spgbleac, without which this work would not have been possible. If you are interested in using these data, please let us know by contacting nicholas.leach@physics.ox.ac.uk or shirin.ermis@physics.ox.ac.uk.
Examples
retrieve,
class=uk,
date=2022-02-14,
expver=b2no,
levtype=sfc,
number=1/2/3/4/5/6/7/8/9/10/11/12/13/14/15/16/17/18/19/20/21/22/23/24/25/26/27/28/29/30/31/32/33/34/35/36/37/38/39/40/41/42/43/44/45/46/47/48/49/50,
param=167.128,
step=0/3/6/9/12/15/18/21/24/27/30/33/36/39/42/45/48/51/54/57/60/63/66/69/72/75/78/81/84/87/90/93/96/99/102/105/108/111/114/117/120/123/126/129/132/135/138/141/144,
stream=enfo,
time=00:00:00,
area=E,
grid=0.25/0.25,
format=netcdf,
type=pf,
target="europe_pf_t2m_20220214.nc"This requests the 50 perturbed members of 2m temperature over Europe for a future experiment forecast initialised on the 14th February 2022 in netCDF format.