Tco1279 CY50R1 wave hindcast based on ERA5 forcing 2026 for AIFS training

Standalone ecWAM wave model CY50R1 with altimeter wave height assimilation forced by corrected ERA5 hourly neutral 10m winds, air density, gustiness and sea ice fraction (2026). Native grid is Tco1279 (9km), 36 directions, 36 frequencies. See Bidlot et al. 2026: Wave Hindcast for ERA6 Preparation and Training Data Driven Models. ECMWF Tech Memo, in preparation, 6-hourly output, many parameters. param=140098/140099/140100/140101/140102/140103/140104/140105/140112/140113/140114/140115/140116/140117/140118/140119/140120/140121/140122/140123/140124/140125/140126/140127/140128/140129/140131/140132/140133/140134/140207/140208/140209/140211/140212/140214/140215/140216/140217/140218/140219/140220/140221/140222/140223/140224/140225/140226/140227/140228/140229/140230/140231/140232/140233/140234/140235/140236/140237/140238/140239/140244/140245/140246/140247/140249/140252/140253/140254, See chapter 10 of https://www.ecmwf.int/en/elibrary/81629-ifs-documentation-cy49r1-part-v… and https://codes.ecmwf.int/grib/param-db/ !!! AIFS v2 was trained with 140229/140230/140232/140233/140114/140115/140116/140117/140118/140119

Examples

retrieve,
class=rd,
stream=wave,
expver=j5rf,
type=an,
levtype=sfc,
param=140229,
date=20260101/to/20260102/by/1,
time=0/to/18/by/6,
step=0,
target='output.grib'

Significant wave height, global native Tco grid, for 20260101 to 20260102 , every 6 hour

retrieve,
class=rd,
stream=wave,
expver=j5rf,
type=an,
levtype=sfc,
param=140232,
date=20260101/to/20260102/by/1,
time=0/to/18/by/6,
step=0,
target='output.grib'

Mean wave period, global Tco native grid, for 20260101 to 20260102 every 6 hour

retrieve,
class=rd,
stream=wave,
expver=j5rf,
type=an,
levtype=sfc,
param=140229,
date=20260101/to/20260102/by/1,
time=0/to/18/by/6,
step=0,
area=90/0/-78/360,
grid=0.1/0.1,
target='output.grib'

Significant wave height, global lat-lon grid (90N, 0W, 360E, 78S), for 20260101 to 20260102 , every 6 hour

retrieve,
class=rd,
stream=wave,
expver=j5rf,
type=an,
levtype=sfc,
param=140232,
date=20260101/to/20260102/by/1,
time=0/to/18/by/6,
step=0,
area=90/0/-78/360,
grid=0.1/0.1,
target='output.grib'

Mean wave period, global lat-lon grid (90N, 0W, 360E, 78S), for 20260101 to 20260102 every 6 hour

DOI
10.21957/j4p5-jf97
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