Canadian Meteorological Centre (CMC) Daily Snow Depth Analysis Data, Version 1, 1998-2019

This data set contains daily analyzed snow depths and monthly mean snow depth (in centimeters (cm)) and estimated snow water equivalent (SWE; in millimeters (mm)) from 1998 through 2019. It also includes climatologies of monthly mean snow depth and estimated SWE for the original period of 1998–2012 and the updated period of 1998–2017, which takes into account several changes in the analysis since 2012. The snow depth analysis is performed using real-time, in-situ daily snow depth observations, and optimal interpolation with a first-guess field generated from a simple snow accumulation and melt model, which is driven with analyzed temperatures and forecast precipitation from the Canadian forecast model (see Brasnett, 1999). In situ observations include snow depths from surface synoptic (synop) observations, meteorological aviation (metar) reports, and special aviation (SA) reports from the World Meteorological Organization (WMO) information system. Note: This data set is NOT homogeneous. It is derived from operational data that are subject to frequent changes. See the Warnings and Notices section of this document for details. Brown, R. D. and B. Brasnett. 2010, updated annually. Canadian Meteorological Centre (CMC) Daily Snow Depth Analysis Data, Version 1. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: https://doi.org/10.5067/W9FOYWH0EQZ3. 19 Nov 2020.