Värriö instruments
Table 1. Permanent facilities at the Värriö measurement station
Method/instrument | Information/product provided by the method | Measurement start/end |
|---|---|---|
AEROSOLS |
|
|
Condensation Particle Counter TSI 3760 | Number concentration of particles (14nm --1 um) | Spring 1992/Winter 2005 |
Condensation Particle Counter TSI 3022 | Number concentration of particles (7nm --1 um) | Spring 2007/Autumn 2015 |
Condensation Particle Counter Airmodus A20 | Number concentration of particles (7nm-1um) | Spring 2016/Autumn 2020 |
Condensation Particle Counter TSI 3722/3750 | Number concentration of particles (7nm-1um) | Autumn 2020 |
Differential Mobility Particle Sizer + Condensation Particle Counter TSI3010 | Particle number size distribution (10nm – 500 nm) | Autumn 1997 |
Differential Mobility Particle Sizer + Condensation Particle Counter TSI3025 | Particle number size distribution (3 nm – 50 nm) | Spring 2003 |
Particle Soot Absorption Photometer (PSAP) | Black carbon concentration, Aerosol absorption coefficient | Summer 2017 |
Nephelometer Ecotech Aurora 3000 | Aerosol scattering coefficient | Autumn 2018 |
CLAP | Black carbon concentration, Aerosol absorption coefficient | Autumn 2021 |
DMPS3 with TSI3750 | Particle number size distribution (6nm – 820 nm) | Autumn 2021 |
GASES |
|
|
URAS 3G infrared absorption analyzer | CO2 concentration profile | Autumn 1991/Autumn 2000 |
TEI 43S Pulsed Fluorescence analyzer | SO2 concentration | Autumn 1991 – Summer 1996 |
TEI 49 photometric analyzer | O3 concentration | Autumn 1991 – Summer 1996 |
TEI 42C TL chemiluminescence analyzer with molybdenum NO2-to NO converter | NO & NOx concentration | Autumn 1997 – January 2004 |
Horiba APMA 360 infrared absorption analyzer | CO concentration | April 2010 |
TAPI T500U CAPS NO2 analyzer | NO2 concentration | September 2016 |
FLUXES |
|
|
METEK USA-1 ultrasonic anemometer | Fluxes of momentum and heat at 16.6 m height | April 2012 |
Li-Cor Li-7200 high frequency gas analyzer | Fluxes of CO2 and H2O at 16.6 m height | April 2012 |
Li-Cor LI-840 gas analyzer | Storage change of CO2 and H2O | Autumn 2017 |
SOLAR AND TERRESTRIAL RADIATION |
|
|
Li-Cor LI-190SB quantum sensor, range 400 – 700 nm | PAR | Autumn 1991 |
Li-Cor LI-190SB with ES Engineering shading device | Diffuse PAR | Summer 2013 |
Reemann TP 3 pyranometer, range 300 - 4800 nm | Global shortwave radiation | Autumn 1991/May 2008 |
Solar SL 501A pyranometers, range 320 – 400 nm and 280 – 320 nm | UVA & UVB | Summer 1996 |
Reemann TP 3 pyranometer | Reflected shortwave radiation at ?? m | 1992-1996 |
Li-Cor LI-190SB quantum sensor, range 400 – 700 nm | Reflected PAR at 13 m | Summer 2013 |
Kipp & Zonen CGR4 pyrgeometer, range 4.5 – 42 µm | Incoming thermal infrared radiation | Spring 2021 |
Reemann MB 1 ? | Net radiation at 15 m | 1992-1996 |
METEOROLOGY |
|
|
Ventilated and shielded temperature sensor, Pt-100 | Temperature profile (tower) | Autumn 1991 |
Psychrometer, Ventilated and shielded sensor, Pt-100 | Relative humidity profile | Autumn 1991/Spring 2000 |
Vaisala HMI32 Humicap | Relative humidity and temperature at 2 and 15 m | Summer 1993/winter 2004 |
Vector A100R anemometer | Wind speed profile | Autumn 1991 |
Vector W200P wind vane | Wind direction, 15 m | Autumn 1991/Autumn 2003 |
Thies Ultrasonic Anemometer 2D | Wind speed, 16 m | Autumn 2003 |
Thies Ultrasonic Anemometer 2D | Wind direction, 16 m | Autumn 2003 |
Druck DPI 260 barometer | Air pressure | Autumn 1991 |
Delta-T RG1 raingauge | Rainfall | Autumn 1991 |
Vaisala DPD 12A precipitation sensor | Raindetection | Autumn 1991 |
Biral VF500 visibility meter | Visibility | May 2008 |
Thies disdrometer (laser) | Precipitation & visibility | May 2008 |
Microsonic MIC+600/IU/TC distance sensor (ultrasonic) | Snow depth | April 2016/December 2023 |
TREE ECOPHYSIOLOGY |
|
|
Tree shoot gas exchange measuring system by University of Helsinki: | Exchange of CO2 and H2O by pine shoots | Spring 1992/April 2010 |
Li-Cor LI-190SB quantum sensor, range 400 – 700 nm | PAR on the cuvettes | Spring 1992 |
Temperature sensor, thermoelement or Pt100 | Cuvette temperature | Spring 1992 |
Solartron linear displacement transducers | Tree trunk diameter changes | Spring 2004 |
SOIL |
|
|
Pt100 sensor | Ground temperature (1 location) | Autumn 1991 |
Thermistors | Ground surface temperature near tower (4 locations) | Summer 2010 |
Delta-T ML2 | Soil surface moisture near tower (4 locations) | Summer 2010 |
Delta-T ML3 | Soil moisture profile (2 locations) | Autumn 2017 |
Hukseflux HFP01 heat plates | Ground heat flux (3 locations) | Summer 2012 |