Brisbane CO2 for 15 June 2023

A relatively low level at Chapel Hill on Thursday in Phase 2 data (see explanation here).  Today’s third graph shows data for two sites from a multi-yearstudy of localities in and around Tokyo. Blue indicates values below average, red those above.  Note that the early afternoon values are particularly low in the summer months (the blue patches) – when photosynthesis is most pronounced.  As a sub-tropical city, we don’t expect Brisbane to show such clear-cut seasonal differences.  (Note the time of day effect is similar, though – but time is shown on the y-axis, not the x-axis. Imasu, Ryoichi, and Yuka Tanabe. ‘Diurnal and Seasonal Variations of Carbon Dioxide (CO2) Concentration in Urban, Suburban, and Rural Areas around Tokyo’. Atmosphere 9, no. 10 (October 2018): 367.

Daily Averages – Phase 2 (See explanation of differences between Phase 1 and Phase 2 data)

For reference, latest monthly average (Apr 2023) from CSIRO for Kennaook/Cape Grim in NW Tasmania was 415.4 ppm. (Note – these are provisional values, subject to revision folllowing sensor re-calibrations and other checks.)

DatePetrie TerraceChapel HillBellbird Park
15-Jun-2023432 ppm413 ppm426 ppm
14-Jun-2023435 ppm427 ppm436 ppm
13-Jun-2023441 ppm438 ppm440 ppm
12-Jun-2023442 ppm441 ppm446ppm
11-Jun-2023443 ppm443 ppm449 ppm
10-Jun-2023446 ppm434 ppm442 ppm
9-Jun-2023440 ppm430 ppm438 ppm
CO2 concentrations for Phase 2
Scroll to Top