Seasonal Prediction ACCESS-S2 Hindcast (1981-2018) and Supporting Data Assimilation and Initial Conditions

• Main Author: Bureau Of Meteorology
• Format: Article in Journal/Newspaper
• Language: English
• Published: NCI Australia 2021
• Subjects: Meteorology; Sea ice
• Online Access: https://dx.doi.org/10.25914/60627acc3c33e; https://pid.nci.org.au/doi/f3311_4920_0252_8073

"ACCESS-S2 is the Australian Bureau of Meteorology's seasonal prediction system used for multi-week and seasonal prediction (due in operations in 2021). The data collection provides access to the hindcast set i.e., forecasts run retrospectively for dates in the past. The hindcast set consists of a 3 or 9 member ensemble from the 1st, 6th, 11th, 16th, 21st, and 26th of every month for the period 1981-2018, as well as additional ensembles at the middle and end of every month. ACCESS-S2 uses the UK Met Office GloSea5-GC2 coupled model and Bureau-developed data assimilation and ensemble generation. The global coupled model includes high resolution atmospheric (N216 which is ~60 km in the mid-latitudes; and 85 levels in the vertical) and ocean (0.25 degree with 75 levels) models, as well as multi-layer land and sea-ice models. This data has also been downscaled and calibrated over the Australian land area at 5km resolution for a subset of variables."