Canadian Land Data Assimilation System in the National Surface and River Prediction System [experimental]

CaLDAS-NSRPS was installed as an experimental system within the National Surface and River Prediction System (NSRPS) at Environment and Climate Change Canada's (ECCC) Canadian Centre for Meteorological and Environmental Prediction (CCMEP) in July 2019. CaLDAS-NSRPS is a continuous offline land-surface assimilation system, which provides analyses of the land surface every 3 h over the domain of the High-Resolution Deterministic Prediction System (HRDPS) at a 2.5 km grid spacing. The emphasis in CaLDAS-NSRPS is to focus upon the assimilation of satellite based remote sensing observations to provide the optimal initial conditions for the predictive components of the NSRPS, the High Resolution Deterministic/Ensemble Land Surface Prediction System (HRDLPS/HRELPS) and the Deterministic/Ensemble Hydrological Prediction Systems (DHPS/EHPS). CaLDAS-NSRPS is launched 4 times per day, at 0000, 0600, 1200, and 1800 UTC.

Data and Resources

Additional Info

Field	Value
Last Updated	April 17, 2026, 18:24 (UTC)
Created	April 17, 2026, 18:24 (UTC)
contact_email	ECWeather-Meteo@ec.gc.ca
contact_person	{"fr": "Gouvernement du Canada; Environnement et Changement climatique Canada; Service météorologique du Canada,ECWeather-Meteo@ec.gc.ca", "en": "Government of Canada; Environment and Climate Change Canada; Meteorological Service of Canada,+01-819-997-2800,ECWeather-Meteo@ec.gc.ca"}
criticality_level	[]
data_dictionary	["climatology_meterology_atmosphere"]
geographic_scope	[]
open_canada_collection	fgp
open_canada_date_published	2023-04-06 00:00:00
open_canada_keywords	{"fr": ["Assimilation", "Prévision", "Surface terrestre", "Humidité du sol", "Point de rosée", "Température radiative de surface", "Fleuve / Rivière", "Température de l'air", "Données météorologiques", "Fournir des services et des produits d'information sur les conditions météorologiques", "Livrer des produits et des services météorologiques aux clients", "Service météorologique du Canada", "Opérations météorologiques et environnementales", "Non Classifié", "Internationale"], "en": ["Assimilation", "Prediction", "Land surface", "Soil moisture", "Dew point", "Surface radiative temperature", "Rivers", "Air temperature", "Meteorological data", "Provide Weather Information Products and Services", "Deliver Weather Products and Services to Clients", "Meteorological Service of Canada", "Weather and Environmental Operations", "Unclassified", "International"]}
open_canada_subject	["nature_and_environment", "science_and_technology"]
sensitivity_level	unrestricted
title_fr	Système canadien d'assimilation de données de surface dans le Système national de prévision de surface et de rivières [expérimental]
update_frequency	continual