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BOREAS AES Canadian Hourly and Daily Surface Meteorological Data, R1

Documentation Revision Date: 2017-01-09

Data Set Version: R1

Summary

This data set contains hourly and daily meteorological data from 23 meteorological stations across Canada from January 1975 to January 1997. The surface meteorology parameters include: date, time, temperature, precipitation, snow, snow depth, sea level pressure, station pressure, dew point, wind direction, wind speed, dry and wet bulb temperature, relative humidity, cloud opacity and cloud amount.

The data were provided by The Canadian Atmospheric Environment Service (AES), (later renamed as The Meteorological Service of Canada), for the BOReal Ecosystem-Atmosphere Study (BOREAS) project.

There are two data files with this data set in text format (.dat).

Figure 1. Map of the Boreas Project study area. The Northern and Southern study areas are indicated with smaller squares inside the larger red square study area. Background image is Canadian land cover classification at the time of the study.

Citation

Funk, B. 2017. BOREAS AES Canadian Hourly and Daily Surface Meteorological Data, R1. ORNL DAAC, Oak Ridge, Tennessee, USA. http://dx.doi.org/10.3334/ORNLDAAC/235

Table of Contents

  1. Data Set Overview
  2. Data Characteristics
  3. Application and Derivation
  4. Quality Assessment
  5. Data Acquisition, Materials, and Methods
  6. Data Access
  7. References
  8. Data Set Revisions

Data Set Overview

This data set contains hourly and daily meteorological data from 23 meteorological stations across Canada from January 1975 to January 1997. The surface meteorology parameters include: date, time, temperature, precipitation, snow, snow depth, sea level pressure, station pressure, dew point, wind direction, wind speed, dry and wet bulb temperature, relative humidity, cloud opacity and cloud amount.

Project: BOReal Ecosystem-Atmosphere Study (BOREAS)

BOREAS was a large-scale experiment initiated in 1990 to investigate interactions between the boreal forest biome and the atmosphere. Data were collected to study the biological and physical processes and conditions that govern the exchanges of radiative energy, water, heat, carbon, and trace gases between boreal forest ecosystems and the atmosphere, particularly those processes that may be sensitive to global change.

Related Data Sets:

Strub, R., and J. A. Newcomer. 1999. BOREAS AES Five-Day Averaged Surface Meteorological and Upper Air Data. ORNL DAAC, Oak Ridge, Tennessee, USA. http://dx.doi.org/10.3334/ORNLDAAC/236

Acknowledgements

For the US, the effort was led by NASA's Earth Science Enterprise with participation from NOAA, NSF, USGS, USFS, and EPA. Significant contributions in the form of funding, data, and personnel were made by the following Canadian agencies: Canada Centre for Remote Sensing, Environment Canada, the Natural Sciences and Engineering Research Council, Agriculture and Agri-Food Canada, National Research Council, Heritage Canada (Parks), Canadian Forest Service, Institute for Space and Terrestrial Science, and Royal Society of Canada.

Data Characteristics

Spatial Coverage:  BOREAS Study Region as defined in the Boreas Experiment Plan: 1000-km by 1000-km

Spatial Resolution:  The data represent point measurements at the locations provided.

Temporal Coverage: 1975-01-01 to 1997-01-01

Temporal Resolution: Daily and hourly data

Study Area: (All latitude and longitude given in decimal degrees)

Site Westernmost Longitude Easternmost Longitude Northernmost Latitude Southernmost Latitude
Boreas study region -107.866667 -97.833333 56.866667 52.166667

 

Table 1. The AES station identifier, the station name, the latitude and longitude coordinates, and the type of reporting for each station. Note that the station numbers starting with 4 are contained in the province of Saskatchewan and the station numbers starting with 5 are in the province of Manitoba.

Station number Name Latitude Longitude Frequency
4060620 Big River 53.833333 -107 .033333 Daily
4051080 Cameo 53.283333 -106.533333 Daily
4071560 Choiceland 53.5 -104.483333 Daily
4061861 Cree Lake 57.35 -107.133333 Daily
4052448   Ethelton 52.766667 -104.9 Daily
4063020 Green Lake 54.283333 -107.7833333 Daily
4063560 Island Falls 55.533333 -102.25 Daily
4064150 La Ronge A 55.15 -105.266667 Daily, Hourly
4074640 Lost River 53.283333 -104.33333 Daily
4063755 Key Lake 57.25 -105.616667 Daily
4075518 Nipawin A 53.333333 -104 Daily
4056240 Prince Albert A 53.216667 -105.683333 Daily, Hourly
4046360 Rabbit Lake 53.1 -107.866667 Daily
4057120 Saskatoon A 52.166667 -106.683333 Daily, Hourly
4068560 Waskesiu Lake 53.916667 -106.083333 Daily
4068840 Whitesand Dam 56.233333 -103.15 Daily
5060623 Crosslake Jenpeg 53.15 -99.283333 Daily
5050960 Flin Flon A 54.683333 -101.683333 Daily
5031111 Grand Rapids 53.15 -99.283333 Daily
5061646 Lynn Lake A 56.866667 -101.083333 Daily, Hourly
506B047 Norway House A 53.966667 -97.833333 Daily, Hourly
5062529 Ruttan Lake 56.483333 -99.65 Daily
5062922 Thompson A 55.8 -97.866667 Daily, Hourly
5063041 Wabowden 54.916667 -98.65 Daily

 

Data File Information

There are two data files in a comma-delimited text format (*.dat). Missing values are represented as -999. 

Data Filename Description
canadian_daily.dat This file contains daily data for the period 1975-01-01 to 1996-11-30
canadian_hourly.dat This file contains hourly data for the period 1975-01-01 to 1997-01-01

 

Table 2. Variables in the file canadian_daily.dat

Variable name Units Description

SITE_NAME

 

The identifier assigned to the site by BOREAS, in the format SSS-TTT-CCCCC, where SSS identifies the portion of the study area: NSA, SSA, REG, TRN, and TTT identifies the cover type for the site, 999 if unknown, and CCCCC is the identifier for site.

SUB_SITE

 

The identifier assigned to the site by BOREAS, in the format GGGGG-IIIII, where GGGGG  is the group associated with the sub-site instrument, e.g. HYD06 or STAFF, and IIIII is the identifier for sub-site, often this will refer to an instrument.

DATE_OBS

DD-MON-YYYY

Collection date of data

MAX_AIR_TEMP

Degrees C

The maximum air temperature for the given date

MIN_AIR_TEMP

Degrees C

The minimum air temperature for the given date

MEAN_AIR_TEMP

Degrees C

The mean air temperature for the given date

PRECIP_1200

mm

The total precipitation during the six-hour period ending at 1200 GMT (0600 local time)

PRECIP_1800

mm

The total precipitation during the six-hour period ending at 1800 GMT (1200 local time)

 

PRECIP_2400

mm

The total precipitation during the six-hour period ending at 2400 GMT (1800 local time)

TOTAL_RAIN_24

mm

The total rainfall within the last 24 hours

 

TOTAL_SNOW_24

mm

The total snowfall within the last 24 hours

TOTAL_PRECIP_24

mm

The total precipitation (liquid equivalent) in the last 24 hours

SNOW_DEPTH

mm

The depth of snow on the ground

CRTFCN_CODE

 

The BOREAS certification level of the data.

Examples are CPI (Checked by PI), CGR (Certified  by Group), PRE (Preliminary), and CPI-??? (CPI but questionable).

REVISION_DATE

DD-MON-YYYY

The most recent date when the information in the referenced data base table record was revised.

 

Table 3. Variables in the file canadian_hourly.dat

Variable name Units Description

SITE_NAME

 

The identifier assigned to the site by BOREAS, in the format SSS-TTT-CCCCC, where SSS identifies the portion of the study area: NSA, SSA, REG, TRN, and TTT identifies the cover type for the site, 999 if unknown, and CCCCC is the identifier for site.

SUB_SITE

 

The identifier assigned to the site by BOREAS, in the format GGGGG-IIIII, where GGGGG  is the group associated with the sub-site instrument, e.g. HYD06 or STAFF, and IIIII is the identifier for sub-site, often this will refer to an instrument.

DATE_OBS

DD-MM-YYYY

Collection date of data

TIME_OBS

HHMM GMT

The Greenwich Mean Time (GMT) when the data were collected

MSL_PRESS

kPa

The calculated instantaneous mean sea level pressure

DEWPOINT_TEMP

degrees C

The measured dew-point temperature

WIND_DIR

degrees

The direction from which the wind was traveling, increasing in a clockwise direction from north

WIND_SPEED

Meters/second

The wind speed

STN_PRESS

kPa

The measured instantaneous atmospheric pressure at the measurement station

DRY_BULB_TEMP

Degrees C

The temperature measured from the dry-bulb thermometer

WET_BULB_TEMP

Degrees C

The temperature measured from the wet-bulb thermometer

REL_HUM

percent

The calculated relative humidity

TOTAL_CLOUD_AMOUNT

fraction

The total cloud amount (0 -1)

TOTAL_CLOUD_OPACITY

fraction

The total cloud opacity (0-1)

CRTFCN_CODE

 

The BOREAS certification level of the data.

Examples are CPI (Checked by PI), CGR (Certified  by Group), PRE (Preliminary), and CPI-??? (CPI but questionable).

REVISION_DATE

DD-MON-YYYY

The most recent date when the information in the referenced data base table record was revised.

 

Application and Derivation

These data could be used for course-scale modeling efforts of for looking at trends in meteorological conditions over time.

Quality Assessment

An automated quality assurance program was run on this data set to identify anomalies including sudden jumps or drops (spikes) in the data. Invalid data in the data files are represented as -999.

Data Acquisition, Materials, and Methods

The Canadian Atmospheric Environment Service (AES), (renamed as The Meteorological Service of Canada), provided BOREAS with hourly and daily surface meteorological data from 23 of the AES meteorological stations located across Canada (AES 1989). The data include date, time, temperature, precipitation, snow, snow depth, sea level pressure, station pressure, dew point, wind direction, wind speed, dry and wet bulb temperature, relative humidity, cloud opacity and cloud amount. Generally, these stations were installed before BOREAS began and conform to Environment Canada's criteria for accuracy and exposure. Many of the stations only recorded temperature and precipitation. The AES monitoring sites were established to provide hourly weather reports, input to the operational program of forecasts and warnings, input to operational weather prediction models, and climate data. These data were compiled by AES from historical records held by the Documentation and Data Acquisition Section of the Canadian Climate Centre using combined manual and automated techniques. The data were collected continuously in all types of weather.

Information on the BOREAS project can be found in the following References.

Data Access

These data are available through the Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC).

BOREAS AES Canadian Hourly and Daily Surface Meteorological Data, R1

Contact for Data Center Access Information:

References

AES, 1989. Climatological Station Catalogue - Prairie Provinces. Environment Canada. Atmospheric Environment Service.

Sellers, P. and F. Hall. 1994. Boreal Ecosystem-Atmosphere Study: Experiment Plan. Version 1994-3.0, NASA BOREAS Report (EXPLAN 94).

Sellers, P., F. Hall, H. Margolis, B. Kelly, D. Baldocchi, G. den Hartog, J. Cihlar, M.G. Ryan, B. Goodison, P. Crill, K.J. Ranson, D. Lettenmaier, and D.E. Wickland. 1995. The boreal ecosystem-atmosphere study (BOREAS): an overview and early results from the 1994 field year. Bulletin of the American Meteorological Society. 76(9):1549-1577.

Sellers, P., F. Hall, and K.F. Huemmrich. 1996. Boreal Ecosystem-Atmosphere Study: 1994 Operations. NASA BOREAS Report (OPS DOC 94).

Sellers, P. and F. Hall. 1996. Boreal Ecosystem-Atmosphere Study: Experiment Plan. Version 1996-2.0, NASA BOREAS Report (EXPLAN 96).

Sellers, P., F. Hall, and K.F. Huemmrich. 1997. Boreal Ecosystem-Atmosphere Study: 1996 Operations. NASA BOREAS Report (OPS DOC 96).

Sellers, P.J., F.G. Hall, R.D. Kelly, A. Black, D. Baldocchi, J. Berry, M. Ryan, K.J. Ranson, P.M. Crill, D.P. Lettenmaier, H. Margolis, J. Cihlar, J. Newcomer, D. Fitzjarrald, P.G. Jarvis, S.T. Gower, D. Halliwell, D. Williams, B. Goodison, D.E. Wickland, and F.E. Guertin. (1997). "BOREAS in 1997: Experiment Overview, Scientific Results and Future Directions", Journal of Geophysical Research (JGR), BOREAS Special Issue, 102(D24), Dec. 1997, pp. 28731-28770.

Data Set Revisions

This data set contains previously restricted contents made publicly available at this revision. The original data set citation is as follows:

Funk, B. 1999. BOREAS AES Canadian Hourly and Daily Surface Meteorological Data. ORNL DAAC, Oak Ridge, Tennessee, USA.