Brisbane CO2 for 24 July 2023

Carbon dioxide concentrations in Brisbane were below the Phase 2 average on Monday, and differences between the three sites were again smaller than usual. 

The estimate of global average temperature reported in the NCEP Climate Forecast System (CFS) version 2 data-set now stretches to 21 consecutive days above the temperature for any previous day in its 45 year record, and some scientists believe these are likely to be the highest global temperatures for about 120,000 years.  

Today’s final chart is from a new paper (open access) by the University of Utah group who have been monitoring Salt Lake City’s CO2 for a number of years.  The chart depicts dCO2 (enhancement compared to background levels) obtained from a monitor mounted one of the city’s TRAX light-rail trains – a great way to collect urban data.  The paper focusses on the pandemic lockdown period and concludes that “demonstrate that CO₂ monitoring networks can track reductions in CO₂ emissions even in medium-sized cities like Salt Lake City“.

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

For reference, latest monthly average (May 2023) from CSIRO for Kennaook/Cape Grim in NW Tasmania was 415.7 ppm. (Note – these are provisional values, subject to revision folllowing sensor re-calibrations and other checks.)