Perry Davy (GNS Science)

Perry Davy

Senior Atmospheric Chemist and Lead Scientist for the Air Particulates Laboratories

GNS Science

Responsible for designing, leading and reporting on research programs at GNS Science along with supervision of post-graduate students and mentoring of staff and interns. Works with a network of collaborators (regional councils, universities, other Crown Research Institutes, central government agencies and international organisations particularly in the Asia Pacific Region and Australia) in air pollution research and data analysis for environmental management and policy formulation. Involved in program development, implementation and presentation of science outreach workshops for teachers and students. Application of R-based statistical analyses and development of code for sector-appropriate data analytics and transformation of information by combining diverse datasets for new insights. Regular contributor of air quality research and air quality management advice to the National Air Quality Working Group and Air Domain Technical Advisory Group for the Ministry for the Environment and Department of Statistics.


Research interests

  • Development of advanced methodologies for air pollution analysis;
  • Chemical characterisation, source identification and source apportionment of air particulate matter;
  • Interaction between indoor and outdoor air quality.



22 June 2020

Infiltration of outdoor smoke into homes has become very topical recently, especially when bushfire smoke was blanketing parts of Australia, and public were being advised to stay indoors for some protection. A similar situation occurs in many southern Australian and New Zealand, towns and cities, where outdoor smoke levels frequently exceed air quality guidelines during cold calm winter nights.


1 June 2020

The identification of indoor air pollutants is useful for exposure analysis and air quality management as we spend 80-90% of our time in built environments. We present the results from a study of indoor aerosol composition across a range of residential housing stock in Wellington, New Zealand.


19 February 2020

Radio New Zealand’s Alison Balance interviewed Physicist Bill Trompetter and atmospheric chemist Perry Davy, from GNS Science, highlighting collective effort on air quality issues outside and indoors.


16 September 2019

2019 Clean Air Society of Australia and New Zealand conference proceedings.


1 March 2019

Children are particularly vulnerable to the health effects of air pollution and as they spend a large proportion of time at school, this is an important environment for children’s exposure to air pollution. Understanding the factors that influence indoor air quality in schools is critical for the assessment and control of indoor air pollution.


27 February 2018

This seminar-style course provided an essential introduction to what air pollution is and what issues are unique to New Zealand. This course explored how air pollution affects the health and wellbeing of people and what factors we can change to reduce the numbers of hospital admissions and deaths due to air pollution.


7 September 2013

2013 Clean Air Society of Australia and New Zealand conference proceedings.