The Salient platform provides access to gridded data for all model outputs (and historical data) on a unified grid.
Figure 1: Map of timescales to available models
The Salient Blend model is a multi-model blend of our proprietary climatology, AI models (natively probabilistic and calibrated by design) with properly calibrated dynamical (GEFS and ECMWF) models.
Our blending algorithm objectively assesses which models are most skillful for particular variables, regions, seasons, and lead times. The blending model also dynamically weights the input models based on current climate conditions, which allows the blend forecast to capture signals from each input.
Then it uses that information to appropriately apply grid-point-by-grid-point model weights to combine the AI and NWP models resulting in a 'Salient Blend' forecast that is superior to the individual model forecasts by accounting for each model's varying spatial and temporal strengths.
API model
: blend, ai (internal model that is included in the blend model)
The Salient forecast has a global extent and provides forecasts for latitude-longitude grid points at 0.25 x 0.25 degrees (25 km) resolution.
The following table provides an overview of the Salient model update frequency and initialization times for each timescale in UTC time. For example, let’s say the Initialization Date -Time is November 1st 00 UTC. A forecast with an Init Date of November 1st will be available on November 2 at 8:00 UTC.
<aside> 💡 Note: The forecast availability is dependent on the availability of 3rd party data at initialization time. If the initialization data is not available, Salient automatically retries downloading the data on a pre-determined schedule, which may cause a delay in forecast availability.
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Timescale (UI) | API timescale |
Horizon | Update Frequency | Initialization Time | Availability post-initialization | Hindcasts |
---|---|---|---|---|---|---|
Weekly rolling | sub-seasonal | Weeks 1-5 | Daily | 00z | + 1 day 08z | 2000 onward |
Weekly calendar | weekly | Weeks 1 to 4 or 5 | Daily | 00z | + 1 day 08z | 2000 onward |
Monthly rolling | seasonal | 3-30 day periods | Weekly | Wednesday 00z | Thursday 08z | 2000 onward |
Monthly calendar | monthly | 2 calendar months | Weekly | Wednesday 00z | Thursday 08z | 2000 onward |
Quarterly rolling | long-range | Quarters 1-4 | Monthly | 15th 00z | 16th 08z | 1981 onward |
Quarterly calendar | quarterly | Seasons 1 to 3 or 4 | Monthly | 15th 00z | 16th 08z | 1981 onward |