Change of photochemical oxidant concentration by increase of VOCs emission from vegetations due to global warming

A. Kondo, A. Kaga, Y. Shimoda, Y. Inoue, D. Narumi, H. Bao, T. Machimura, M. Tada, K. Sakaguchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

VOCs emission experiments were conducted in a growth chamber in which temperature and luminous intensity can be controlled. Temperature was set at the typical summer temperature in Osaka and luminous intensity was set at 1000(μmol/m2/s) during daytime. The standard VOCs emissions from four representative Japanese plant species (Cryptomeria japonica, Chamaecyparis obtuse, Pinus densiflora and Quercus serrata) and rice plants were measured. The species distributions and their leaf biomass densities in the Kinki district were determined by the forest database and the use of a geophysical information system. Consequently, the detail emission distributions of isoprene and monoterpenes were estimated. Photochemical oxidant concentration was simulated by considering VOCs emissions from forests and paddy fields that changed with temperature and luminous intensity. The simulated results of NO, NO2 and O3 reasonably agreed with the observed data at 12 monitoring locations. The numerical experiment of temperature increment by 1°C that causes both the increment of VOCs and the promotion of photochemical reaction, could represent the recent increase of oxidant concentration by global warming.

Original languageEnglish
Title of host publicationAir Pollution XIV
PublisherWITPress
Pages447-457
Number of pages11
Volume86
ISBN (Print)1845641655, 9781845641658
DOIs
Publication statusPublished - 2006
Externally publishedYes
Event14th International Conference on Modelling, Monitoring and Management of Air Pollution 2006, AIR06 - The New Forest, United Kingdom
Duration: May 22 2006May 24 2006

Conference

Conference14th International Conference on Modelling, Monitoring and Management of Air Pollution 2006, AIR06
Country/TerritoryUnited Kingdom
CityThe New Forest
Period5/22/065/24/06

Keywords

  • Growth chamber experiment
  • Isoprene
  • Monoterpenes
  • Numerical simulation
  • Photochemical oxidant

ASJC Scopus subject areas

  • Environmental Science(all)

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