Release notes

Recent updates of Solargis database and online applications

We are constantly working to improve Solargis. Below are details of recent updates to Solargis model and services.

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27 Jan 2019

Solargis model v2.1.27 release

Data for Americas has been improved using the first complete year of GOES-R satellite imagery:

- better snow identification and processing in GHI and DNI calculation for period from 1 January 2018
more info about the use of GOES-R satellite in Solargis model

08 Jan 2019

Solargis model v2.1.26 release

- IFS forecast was updated with following changes
- Forecast update frequency is 6 hours (before it was  12 hours)
- Temporal resolution for first 48 hours was increased to 1 hour, hour 48-84 remains in 3 hourly resolution
- New region covering east Brazil

03 Jan 2019

Solargis model v2.1.25 release

- Improved gap filling of meteorological parameters, and introduced minimum and maximum limits for parameters to avoid overshoots and other erroneous data cases

16 Dec 2018

Solargis model v2.1.24 release

- De-biasing correction for TEMP data from CFSv2 model (applicable for period 2011 onward) was improved.
- Change in temperature values for period 2011 onward is mostly within ±0.5°C. The change in long-term average is even smaller. For details of TEMP post-processing method see

16 Dec 2018

Uncertainty values in TMY CSV file header

- CSV file header for TMY Pxx (75,90,95,99) data has been extended to include uncertainty values. The values include GHI/DNI model uncertainty, uncertainty because of inter-annual variability, and combined uncertainty. All uncertainty values are reported at P90 confidence (1.282 * SD).
- It is planned to include the uncertainty values also in PDF report issued along with the CSV files.

02 Dec 2018

Solargis model v2.1.23 release

- Improved post-processing of night-time air temperature data from CFSv2 and MERRA-2 model outputs. Updated lapse rate used for spatial downscaling of TEMP data to 1km resolution.
- This change affects Solargis time series: historical, recent, nowcast and forecast.
- All regions are affected but most significant corrections are seen in the coasts of California, Namibia and Chile, western Canada and Yakutia (Russia).