TOC > MSC data > HRDLPS > HRDLPS Changelog
Chronology of changes to the High Resolution Deterministic Land Surface Prediction System (HRDLPS)
Thursday May 1, 2025
The High Resolution Deterministic Land Surface Prediction System (HRDLPS) is declared operational at the Canadian Meteorological Centre
Effective May 1st, 2025, the Canadian Meteorological Centre (CMC) of the Meteorological Service of Canada declared operational the High Resolution Deterministic Land Surface Prediction System (HRDLPS, v2.2.1)
Tuesday June 11, 2024
Upgrade to Version 2.2.0 of the High Resolution Deterministic Land Surface Prediction System (HRDLPS) at the Canadian Meteorological Centre
On Tuesday June 11, 2024, starting with the 1200 UTC run, the Meteorological Service of Canada's Canadian Meteorological Centre (CMC) will upgrade the High Resolution Deterministic Land Surface Prediction System (HRDLPS) to v2.2.0
Significant changes:
- Use of the SPS 6.2.1 Surface Prediction System, in which the wet-thermometer temperature-based approach to precipitation phase distribution improves precipitation phase estimates and snowpack simulations.
- Correction of summertime cold biases over North American lakes, particularly for lakes such as Winnipeg and Saint-Pierre.
A brief summary of the innovations included in this upgrade and their impact on performance can be found in this link
The official note announcing this implementation is available at this link.
The technical specifications document for HRDLPS 2.2.0 is available at this link.
Tuesday June 28, 2022
Upgrade to Version 2.1.0 of the HRDLPS adapted to the New High Performance Computing Infrastructure.
See details at this link.
Wednesday December 1st, 2021
Upgrade to Version 2.0.0 of the High Resolution Deterministic Land Surface Prediction System (HRDLPS) at the Canadian Meteorological Centre
Effective Wednesday, December 1st, 2021, the Canadian Meteorological Centre (CMC) will update the High Resolution Deterministic Land Surface Prediction System (HRDLPS) to v2.0.0.
The official note announcing this implementation is available at this location.
For more information, please consult the technical specifications document for HRDLPS v2.0.0 available at this link.
A technical note with more details on this change is available at this link.