Month: July 2023

Brisbane CO2 for 10 July 2023

Latest Data / By

Carbon dioxide concentrations rose at all three sites on Monday – by 16, 13 and 15 ppm from Sunday, at the CBD (Petrie Terrace), middle suburb (Chapel Hill) and city edge (Bellbird Park (sites). All three sites exceeded 450 ppm on average for at least one 30 minute period.  Winds were from the SW at 6 km/h at 9 a.m. and from the NNW at 15 km/h at 3 pm (recorded by the BoM at Archerfield), so a little calmer than in recent days and not straight from the west, which may have allowed more CO2 to accumulate. Another factor on Monday may have been additional emissions associated with school traffic resuming after the break.  Today’s final chart reinforces the point that southern hemisphere seasonal low temperatures are increasing along with northern hemisphere highs.  On several days in the last week (data is up to Sunday), The University of Maine’s estimates put the southern hemisphere at about or more than 1 full degree C above the mean for the last four decades – a level almost 4 standard deviations above that mean. 

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.)

DatePetrie TerraceChapel HillBellbird Park
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

Brisbane CO2 for 10 July 2023 Read More »

Brisbane CO2 for 9 July 2023

Latest Data / By

Sunday saw the reverse of Saturday – rising carbon dioxide concentrations across the day. Over the last 31 days, the association between the average daily carbon concentration at our three sites, and the absolute deviation of the wind direction from due west remains moderately strong (r = .44, p = 0.014).  In other words, the more the winds are blowing across the city towards the sensors (currently located from the CBD westward) – i.e. from north, east or south, the higher the concentrations tend to be, while westerlies are associated with lower concentrations on average.  Today’s third chart is a good explanation of the effects of La Nina and El Nino conditions on global temperatures – a topical issue as we transition from the former to the latter. For more – see the original piece  written by NOAA’s Rebecca Lindsey in May this year. 

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.)

DatePetrie TerraceChapel HillBellbird Park
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

Brisbane CO2 for 9 July 2023 Read More »

Brisbane CO2 for 8 July 2023

Latest Data / By

Saturday’s levels were a little higher than Friday’s, but overall they fell over the course of the day. The BoM do not have yesterday’s Archerfield weather summary posted as of the time of writing to relate this to wind speeds and directions. Instead, as a reminder of why tracking carbon dioxide is important, the third image from the University of Maine (dark line) shows the global temperature yesterday – 0.98 degrees C above the mean for the last 4 decades – or in the order of 5 standard deviations above that mean (dashed line is 2 SDs). Brisk mornings in Brisbane this week – but the global average temperature reached its highest ever recorded value not once, but three times in one week.  In our hemisphere, Antactic Sea Ice extent was measured this week also at levels multiple standard deviations below its mean – see fourth chart.  Anyone who’s had even a basic exposure to statistics will understand the significance of five and six-sigma events. See Zack Labe’s visualisations for this and more information. 

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.)

DatePetrie TerraceChapel HillBellbird Park
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

Brisbane CO2 for 8 July 2023 Read More »

Brisbane CO2 for 7 July 2023

Latest Data / By

Much lower levels on Friday than the day before at all three sites, with the resumption of westerly winds reaching 35 km/h at 3 pm (measured by the BoM at Archerfield). The spike at Bellbird Park from 7:35 in the morning lasted about 25 minutes – no clear cause.

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.)

DatePetrie TerraceChapel HillBellbird Park
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

Brisbane CO2 for 7 July 2023 Read More »

Brisbane CO2 for 6 July 2023

Latest Data / By

The most notable feature of Thursday’s data was the 25-odd ppm drop across the course of the day for all three sites, with winds from the west at both 9 a.m. and 3 p.m., picking up from 6 to 17 km/h between those times (measured by the BoM at Archerfield). This repeats a familiar pattern of wind direction and carbon dioxide concentrations in Brisbane in recent days, westerlies being associated with lower concentrations.

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.)

DatePetrie TerraceChapel HillBellbird Park
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

Brisbane CO2 for 6 July 2023 Read More »

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