Rainfall Measurement in Canada: Changing Observational Methodsand Archive Adjustment Procedures

  title={Rainfall Measurement in Canada: Changing Observational Methodsand Archive Adjustment Procedures},
  author={John R. Metcalfe and Bruce Routledge and Kenneth A. Devine},
  journal={Journal of Climate},
Abstract Precipitation is one of the key components in hydrologic modeling and process studies; however, it is widely recognized that significant errors in the measurement of precipitation exist. During its 150-yr history, the Canadian Meteorological Service has employed a number of different precipitation gauges to measure rainfall. This paper will focus on documenting the types of gauges used in rainfall measurement over this period. Systematic errors in gauge catch such as wetting loss, wind… 

Adjusted Daily Rainfall and Snowfall Data for Canada

ABSTRACT This article documents how Environment and Climate Change Canada’s Adjusted Daily Rainfall and Snowfall (AdjDlyRS) dataset was developed. The adjustments include (i) conversion of ruler

Monitoring Precipitation over the Arctic Terrestrial Drainage System: Data Requirements, Shortcomings, and Applications of Atmospheric Reanalysis*

An effort is under way aimed at historical analysis and monitoring of the pan-Arctic terrestrial drainage system. A key element is the provision of gridded precipitation time series that can be

Rehabilitation and Analysis of Canadian Daily Precipitation Time Series

Abstract The goal of this project was to develop adjustment procedures to use daily resolution data to generate high quality time series of precipitation and to perform regional trend analyses on the

Inter-comparison of daily precipitation products for large-scale hydro-climatic applications over Canada

A number of global and regional gridded climate products based on multiple data sources are available that can potentially provide reliable estimates of precipitation for climate and hydrological

An Overview of Surface-Based Precipitation Observations at Environment and Climate Change Canada

An overview of the present status and procedures related to surface precipitation observations at Environment and Climate Change Canada (ECCC) is provided to support the ongoing renewal of observation systems and networks at the Meteorological Service of Canada.

Quantification of precipitation measurement discontinuity induced by wind shields on national gauges

Various combinations of wind shields and national precipitation gauges commonly used in countries of the northern hemisphere have been studied in this paper, using the combined intercomparison data

Field accuracy of Canadian rain measurements

Abstract Daily historical rain‐gauge data from several Canadian sources and field experiments were compared to the World Meteorological Organization (WMO) pit gauge rainfall measurements in order to

Adjusting precipitation amounts from Geonor and Pluvio automated weighing gauges to preserve continuity of observations in Canada

Abstract Since the early 2000s, the Geonor and Pluvio automated weighing gauges have been part of the standard configuration of climate monitoring Reference Climate Stations (RCS) and the



Measurement of Trace Rainfall at a High Arctic Site

Trace rainfall is defined as rainfall under 0.2 mm (or 0.05 in) which cannot be measured by conventional types of rain-gauges. In the Canadian Arctic Islands, trace rainfall is commonly reported by

Variability and Trends of Total Precipitation and Snowfall over the United States and Canada

Abstract The biases and large-scale inhomogeneities in the time series of measured precipitation and snowfall over the United States and Canada are discussed and analyzed. The spatial statistical

Accuracy of Canadian Snow Gage Measurements

Abstract Field investigation to assess the accuracy and comparability of precipitation gage measurements of snowfall in Canada was initiated in 1973. The MSC Nipher shielded snow gage (Canadian

Snowfall measurements in northern Canada

Sources of error in Canadian snowfall records are discussed, with particular reference to the six-hour interval between measurements. Very slow rates of fall are usual at high latitudes and these