The Dorothy Urlich-Cloher School of Environment

Climate and Air Quality


Specialised atmospheric monitoring equipment as well as basic meteorological equipment support the School's Environmental Science research.

RM Young Sonic Anemometer

Field Analytical Equipment

  • Picarro G2131-i Isotopic CO2 Analyser
    Field based sampling and analysis of δ13C in atmospheric CO2 - LINK to Picarro website
  • PP Systems EGM-4 Portable CO2 Infrared Gas Analyser
    A high precision portable environmental gas analyzer for CO2- LINK to PP Systems website
  • PP Systems WMA-4 CO2 Analyser
    A high precision CO2 analyzer - LINK to PP Systems website
  • PP Systems CIRAS-2 Portable Photosynthesis System
    Measures photosynthesis, chlorophyll fluorescence, soil respiration and net canopy flux - LINK to PP Systems website
  • Li-Cor LI-7200FM Enclosed CO2/H2O Analyser
    High speed field measurement of carbon dioxide and water vapour - LINK to Li-Cor website
  • TSI P-Trak 8525 Ultrafine Particle Counters
    Designed for spot measurement of ultrafine particulate levels (<0.1 μm) -  LINK to TSI website
  • Thermo Environmental Instruments Model 49c Ozone Analyser
    Uses UV absorbance to measure ozone concentration
  • Monitor Labs ML9841A NOx Analyser

Investigating urban CO2 fluxes and sources at Botany

Botany site

As part of an ongoing PhD research project, we are exploring CO2 concentrations and fluxes and their sources in a newly developed (< 15 years) residential area in Botany Downs, Auckland.

We deployed an eddy covariance system, consisting of a sonic anenometer (Gill, Windmaster) and a fast-response CO2 analyser (LI-7200), on a 10 m high telescopic mast (Hilomast LLC) to continuously monitor CO2 concentrations and fluxes. To partition locally derived CO2 concentrations into different fuel sources we are measuring stable isotopes of CO2 at the same height as CO2 concentrations using an isotope analyser (Picarro, G2131-i). In addition, we collect atmospheric air samples for carbon-14 analysis to partition biogenic and anthropogenic CO2 sources.

The study will help to improve our understanding about the magnitude of urban CO2 fluxes and the contribution of different CO2 sources (i.e. fossil fuel combustion, natural gas combustion, biogenic CO2 emissions) in residential areas in Auckland. In particular, we are interested to find out more about the potential of urban vegetation to mitigate local CO2 concentrations.

Botany Project Leader


Field Measurement Equipment

Wind measurement

Rainfall measurement

  • Numerous tipping bucket raingauges
  • Nylex 1000 rain gauges

Temperature measurement

  • Omega OS530 handheld infrared thermometers - LINK to Omega website
  • Omega HH309A 4-channel logging thermometer -LINK to Omega website

Solar Radiation measurement


Sensors are typically logged using Campbell Scientific dataloggers or Onset HOBO dataloggers


Key Contacts