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- New observational dataset in SST indices (NINO, IOD) plots: ERA5 SST has been introduced to substitute NCEP OIv2. This affects all new plots created from January 2023, specifically all new real-time forecast plots released but also the updates with new observations to previously released plots (: from MarchApril/2022 for NINO indices (March/2022 in the case of C3S multi-model and ECCC multi-model) and May/2022 for IOD)
- New pressure level (1000hPa) available from UK MetOffice GloSea6 data
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