Station / MAP-KJ

The meteorological station with near-real time access recorded data every 30 minutes with the following instruments:

  • Humidity and Temperature probe (HC2-S3-L) : Air temperature (°C) and Relative Humidity (%)
  • Sonic Ranging Sensor (SR50A) : Snow depth (m)
  • Infrared Radiometer (SI-111) : Surface Temperature (°C)
  • Barometric Pressure Sensor (61302V) : Barometric Pressure (hPa)
  • R. M. Young Wind Monitor (05103-10): Wind speed (m s-1) and wind direction
  • Net radiometer (CNR4): Short and Longwave radiation (↑ and ↓) (W m-2)
  • Decagon GS3 (2 cm and 10 cm) : Soil water content (m3 m-3), permittivity (70 MHz) and temperature (°C)
  • 8 thermistors : Temperature (2 cm and 10 cm in the soil) (0 to 60 cm in air and/or snow)

Transmission data using Iridium Modem: Data transmission once a week (Monday morning)

In addition, i-button temperature sensor in soil (2 et 10 cm) were deployed on two transects (27th of August 2014):

  • North-South transect south of meteorological station, 6 points on 6 km.
  • Est-West transect, 7 points, East of the station on 6 km.

Four i-button were also installed on trees :

  • VG1- VG2 on a black spruce close to meteorological station
  • BJ14-2V-BJ1410V on black spruce in poorly-drained area

The i-button data were downloaded June 28th and new i-button were put in soil at 0 cm (under the lichen) and at 5 cm to better catch the freeze/thaw signal.

Due to wildlife disturbance, the meteorological station was unoperational from September 12th 2014 to June 27th 2015.

The data collected aims at calibrating and validating land surface freezing / thawing algorithm with passive microwave satellites. These algorithms will then be used to better understand the carbon flux related to freeze/thaw processes in boreal forests.

La station météorologique possédant un accès en temps quasi-réel (hebdomadaire) mesure aux 30 minutes la température de l’aire, l’humidité de l’aire, la hauteur de neige, la température de surface, la pression barométrique, la vitesse et la direction du vent, la radiation nette ainsi que la température et la permittivité (humidité) du sol. De plus, deux transects de capteurs de température (i-button) ont été déployés. Quatre i-buttons ont aussi été installés sur des arbres. Les données sont récoltées une fois par années (première récolte : 28 juin 2015).

  • Originator : Alexandre Roy
  • Principal Investigator : Alain Royer
  • Collaborator : Alexandre Langlois
  • Collaborator : Patrick Cliche

Status of Data
In progress

Maintenance and update frequency
Updates every week. (i-button once a year in summer)

Time Period
Start Year : 2014
Start Month: 08
Start Day : 27

Roy, A., Royer, A., Langlois, A., Cliche, P., Busseau, B.-C. (2015) Meteorological stations and soil temperature sensors network 100 km East of Kuujjuarapik for soil and monitoring, unpublished data.