Description of data available through WS API Time Series and FTP API
Solargis historical, operational and nowcasting data is seamlessly integrated with forecasting data coming from post-processed Numerical Weather Prediction model outputs.In case of solar and PV time series we use satellite data since history up to present moment plus 4-5 hours ahead. This include historical (archived) data, operational data, real-time and nowcasting data. Historical data spans up to last completed calendar month and can be considered as "definitive". Data in current calendar month up to DAY-1 is "operational" and will be re-analysed in the next month using final data inputs. Important to note is that differences introduced with every update is typically small. Data in current day are from "real-time" satellite model and will be updated when day finishes. Then, based on last satellite scenes we predict cloud motion in period in next 4-5 hours ("nowcasting"). The present moment and short period before is covered by "nowcasting" data as the last satellite scene is still in progress. This delay can take up to 30 minutes. After nowcasting period we use post-processed outputs from Numerical Weather Prediction models (NWP). Satellite based data is seamlessly integrated with NWP forecasting data within one response.
Schema below is valid for solar and PV data only. The schema shows how data sources are used in integrated into API response having in this case 9 days of data (received generated at 12:00 noon of any given day).
Note: schema above is valid for location where real-time and nowcasting data is available.
|satellite region||data availability since||historical data update||operational data update|
satellite scan frequency
in the beginning of every month,
whole previous month is re-calculated
|every day at 10:00 UTC (USA), 13:00 UTC (whole region)||no||30 minutes|
|MSG||2005-01-01||every day at 03:45 UTC||part of Europe, Kenya||15 minutes|
|MTSAT / HIMAWARI||2006-07-01||every day at 22:40 UTC||East China, Japan||30 min. (10 min. since Feb Jan 2016 onward)|
Operational data daily update re-calculates two days - DAY-1 and DAY-2. Monthly update re-calculates the whole previous month as soon as completed. The purpose of those updates is described in this article. We gradually expands spatial coverage of satellite data accessible via API. To access operational and historical data in the gray areas on the map, please use Solargis climData online shop.