Brisbane CO2 for 2 August 2023

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The overall average across the three sites dropped to 427 ppm on Wednesday from 435 ppm the day before, and an unusual feature was the declining trend between midnight and sunrise (compare the first few hours of the chart for yesterday with the 21 day average. 

The latest estimate of global average temperature reported in the NCEP Climate Forecast System (CFS) version 2 data-set now stretches to 29 consecutive days* (up to Tuesday) 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.  (*Yesterday’s post should have stated this as 28 days, not 29, up to Monday).

Today’s third chart is from an open access study of Wroclaw, Poland. The authors use isotopic composition methods to apportion urban GHGs into those emanating from fossil fuel burning (CO2 from fossil fuels has less δ13C) and biogenic sources.

Bezyk, Yaroslav, Maciej Górka, Izabela Sówka, Jarosław Nęcki, and Dariusz Strąpoć. ‘Temporal Dynamics and Controlling Factors of CO2 and CH4 Variability in the Urban Atmosphere of Wroclaw, Poland’. Science of The Total Environment 893 (1 October 2023): 164771. https://doi.org/10.1016/j.scitotenv.2023.164771.
 

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

For reference, latest monthly average (June 2023) from CSIRO for Kennaook/Cape Grim in NW Tasmania was 416.1 ppm. (Note – these are provisional values, subject to revision folllowing sensor re-calibrations and other checks.)

DatePetrie TerraceChapel HillBellbird Park
02-Aug-2023432 ppm433 ppm415 ppm
01-Aug-2023440 ppm436 ppm431 ppm
31-Jul-2023443 ppm431 ppm430ppm
30-Jul-2023433 ppm424 ppm430 ppm
29-Jul-2023434 ppm424 ppm431 ppm
28-Jul-2023431 ppm424 ppm426 ppm
27-Jul-2023429 ppm430 ppm433 ppm
26-Jul-2023432 ppm431 ppm430 ppm
25-Jul-2023427 ppm425 ppm424 ppm
24-Jul-2023420 ppm418 ppm418 ppm
23-Jul-2023424 ppm421 ppm420 ppm
22-Jul-2023434 ppm429 ppm428 ppm
21-Jul-2023446 ppm430 ppm—
20-Jul-2023433 ppm430 ppm—
19-Jul-2023437 ppm436 ppm439 ppm
18-Jul-2023443 ppm432ppm433 ppm
17-Jul-2023435 ppm432 ppm436 ppm
16-Jul-2023436 ppm432 ppm441 ppm
15-Jul-2023449 ppm434 ppm452 ppm
14-Jul-2023452 ppm435 ppm448 ppm
13-Jul-2023433 ppm431 ppm429 ppm
12-Jul-2023437 ppm437 ppm438 ppm
11-Jul-2023448 ppm434 ppm438 ppm
10-Jul-2023439 ppm424 ppm432 ppm
9-Jul-2023423 ppm411 ppm417 ppm
8-Jul-2023418 ppm411 ppm414 ppm
7-Jul-2023413 ppm407 ppm408 ppm
6-Jul-2023434 ppm427 ppm428 ppm
5-Jul-2023442 ppm441 ppm429 ppm
4-Jul-2023449 ppm443 ppm429 ppm
3-Jul-2023428 ppm429 ppm412 ppm
2-Jul-2023424 ppm425 ppm414 ppm
1-Jul-2023419 ppm407 ppm405 ppm
30-Jun-2023414 ppm405 ppm402 ppm
29-Jun-2023415 ppm409 ppm405 ppm
28-Jun-2023435 ppm427 ppm428 ppm
27-Jun-2023426 ppm409 ppm415 ppm
26-Jun-2023412 ppm402 ppm412 ppm
25-Jun-2023447 ppm426 ppm429 ppm
24-Jun-2023427 ppm417 ppm423 ppm
23-Jun-2023434 ppm427 ppm435 ppm
22-Jun-2023442 ppm425 ppm436 ppm
21-Jun-2023443 ppm421 ppm437 ppm
20-Jun-2023421 ppm414 ppm417 ppm
19-Jun-2023430 ppm418 ppm419 ppm
18-Jun-2023436 ppm426 ppm434 ppm
17-Jun-2023440 ppm429 ppm437 ppm
16-Jun-2023438 ppm421 ppm433 ppm
15-Jun-2023433 ppm412 ppm428 ppm
14-Jun-2023435 ppm425 ppm438 ppm
13-Jun-2023441 ppm436 ppm442 ppm
12-Jun-2023442 ppm439 ppm448ppm
11-Jun-2023443 ppm441 ppm451 ppm
10-Jun-2023446 ppm432 ppm444 ppm
9-Jun-2023441 ppm428 ppm440ppm
CO2 concentrations for Phase 2
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