Correlation of aerosol and carbon monoxide at 45°S: Evidence of biomass burning emissions

Jones, Nicholas; Rinsland, C. P.; Liley, Ben; Rosen, J. M.

doi:10.1029/2000gl012203

Cited by 36 publications

(32 citation statements)

References 11 publications

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“…Rinsland et al, 1998Rinsland et al, , 2002Jones et al, 2001;de Laat et al, 2010). Rinsland et al (1998) showed significant year-to-year variations in both CO and C 2 H 6 partial columns (surface to 12 km) measured at Lauder but the trends over the period 1993-1997 for both species are not significant.…”

Section: Introductionmentioning

confidence: 93%

Trends and variations in CO, C2H6, and HCN in the Southern Hemisphere point to the declining anthropogenic emissions of CO and C2H6

et al. 2012

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Abstract. We analyse the carbon monoxide (CO), ethane (C 2 H 6 ) and hydrogen cyanide (HCN) partial columns (from the ground to 12 km) derived from measurements by groundbased solar Fourier Transform Spectroscopy at Lauder, New Zealand (45 • S, 170 • E), and at Arrival Heights, Antarctica (78 • S, 167 • E), from 1997 to 2009. Significant negative trends are calculated for all species at both locations, based on the daily-mean observed time series, namely CO (−0.94 ± 0.47 % yr −1 ), C 2 H 6 (−2.37 ± 1.18 % yr −1 ) and HCN (−0.93 ± 0.47 % yr −1 ) at Lauder and CO (−0.92 ± 0.46 % yr −1 ), C 2 H 6 (−2.82 ± 1.37 % yr −1 ) and HCN (−1.41 ± 0.71 % yr −1 ) at Arrival Heights. The uncertainties reflect the 95 % confidence limits. However, the magnitudes of the trends are influenced by the anomaly associated with the 1997-1998 El Niño Southern Oscillation event at the beginning of the time series reported. We calculate trends for each month from 1997 to 2009 and find negative trends for all months. The largest monthly trends of CO and C 2 H 6 at Lauder, and to a lesser degree at Arrival Heights, occur during austral spring during the Southern Hemisphere tropical and subtropical biomass burning period. For HCN, the largest monthly trends occur in July and August at Lauder and around November at Arrival Heights. The correlations between CO and C 2 H 6 and between CO and HCN at Lauder in September to November, when the biomass burning maximizes, are significantly larger that those in other seasons. A tropospheric chemistry-climate model is used to simulate CO, C 2 H 6 , and HCN partial columns for the period of 1997-2009, using interannually varying biomass burning emissions from GFED3 and annually periodic but seasonally varying emissions from both biogenic and anthropogenic sources. The model-simulated partial columns of these species compare well with the measured partial columns and the model accurately reproduces seasonal cycles of all three species at both locations. However, while the model satisfactorily captures both the seasonality and trends in HCN, it is not able to reproduce the negative trends in either C 2 H 6 or CO. A further simulation assuming a 35 % decline of C 2 H 6 and a 26 % decline of CO emissions from the industrial sources from 1997 to 2009 largely captures the observed trends of C 2 H 6 and CO partial columns at both locations. Here we attribute trends in HCN exclusively to changes in biomass burning and thereby isolate the influence of anthropogenic emissions as responsible for the long-term decline in CO and C 2 H 6 . This analysis shows that biomass burning emissions are the main factors in controlling the interannual and seasonal variations of these species. We also demonstrate contributions of biomass burning emission from different southern tropical and sub-tropical regions to seasonal and interannual variations of CO at Lauder; it shows that long-range transport of biomass burning emissions from southern Africa and South America have consistently larger year-to-year contributions to the back...

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Section: Introductionmentioning

confidence: 93%

Trends and variations in CO, C2H6, and HCN in the Southern Hemisphere point to the declining anthropogenic emissions of CO and C2H6

et al. 2012

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“…The time period covers 13 years from mid-1992 to mid-2005, and as such, season-to-season changes can be studied along with long-term trends. The instrumentation and history of the monitoring program at Lauder are described in previous papers (Jones et al, 1994(Jones et al, , 2001Rinsland et al, 2002).…”

Section: Methodsmentioning

confidence: 99%

Long-term tropospheric formaldehyde concentrations deduced from ground-based fourier transform solar infrared measurements

et al. 2009

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Abstract. We report a 13-year (1992-2005) dataset of total column measurements of formaldehyde (HCHO) over Lauder, New Zealand, inferred from solar infrared spectra measured using a high-resolution Fourier Transform Spectrometer (FTS). Ambient HCHO concentrations at this rural location are often close to levels typical of remote marine environments (<250 ppt), which are close to the detection limit using standard techniques. Consequently we develop a new method that successfully produces HCHO columns with sufficient sensitivity throughout the whole season. HCHO columns over Lauder have a strong seasonal cycle (±50%), with a mean column of 4.9×10 15 molecules cm −2 , peaking during summer months. A simple box model of CH 4 oxidation reproduces the observed broad-scale seasonal cycle, but significantly underestimates the seasonal peak HCHO ground concentrations during summer. This suggests the existence of an additional significant source of HCHO, possibly isoprene that cannot be explained by oxidation of CH 4 alone. The ground-based FTS column data compare well with collocated HCHO column measurements from the Global Ozone Monitoring Experiment (GOME) satellite instrument during the operational period of GOME (1996)(1997)(1998)(1999)(2000)(2001), r 2 =0.65, mean bias=10%, n=48).

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“…Rinsland et al (2000) at the ISSJ and Jones et al (2001) at the NDSC station at Lauder, New Zealand. In the present study, we use the same CO absorption lines and algorithm (SFIT2) as in these two studies.…”

Section: Retrieval Parametersmentioning

confidence: 99%

“…In order to account for correlations between CO values at different altitudes (z, in km), extra-diagonal terms are added to Sx as gaussian functions: Sx ij = Sx ii Sx jj exp(− z i −z j 2 ) 2 . The ad hoc measurement covariance matrix is diagonal with values corresponding to a signal to noise ratio of 150 as in Jones et al (2001).…”

Section: Retrieval Parametersmentioning

confidence: 99%

Ground-based FTIR measurements of CO from the Jungfraujoch: characterisation and comparison with in situ surface and MOPITT data

Barret

Mazière

Mahieu³

2003

Atmos. Chem. Phys.

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Correlation of aerosol and carbon monoxide at 45°S: Evidence of biomass burning emissions

Cited by 36 publications

References 11 publications

Trends and variations in CO, C<sub>2</sub>H<sub>6</sub>, and HCN in the Southern Hemisphere point to the declining anthropogenic emissions of CO and C<sub>2</sub>H<sub>6</sub>

Trends and variations in CO, C<sub>2</sub>H<sub>6</sub>, and HCN in the Southern Hemisphere point to the declining anthropogenic emissions of CO and C<sub>2</sub>H<sub>6</sub>

Long-term tropospheric formaldehyde concentrations deduced from ground-based fourier transform solar infrared measurements

Ground-based FTIR measurements of CO from the Jungfraujoch: characterisation and comparison with in situ surface and MOPITT data

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Correlation of aerosol and carbon monoxide at 45°S: Evidence of biomass burning emissions

Cited by 36 publications

References 11 publications

Trends and variations in CO, C&lt;sub&gt;2&lt;/sub&gt;H&lt;sub&gt;6&lt;/sub&gt;, and HCN in the Southern Hemisphere point to the declining anthropogenic emissions of CO and C&lt;sub&gt;2&lt;/sub&gt;H&lt;sub&gt;6&lt;/sub&gt;

Trends and variations in CO, C&lt;sub&gt;2&lt;/sub&gt;H&lt;sub&gt;6&lt;/sub&gt;, and HCN in the Southern Hemisphere point to the declining anthropogenic emissions of CO and C&lt;sub&gt;2&lt;/sub&gt;H&lt;sub&gt;6&lt;/sub&gt;

Long-term tropospheric formaldehyde concentrations deduced from ground-based fourier transform solar infrared measurements

Ground-based FTIR measurements of CO from the Jungfraujoch: characterisation and comparison with in situ surface and MOPITT data

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Product

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Trends and variations in CO, C<sub>2</sub>H<sub>6</sub>, and HCN in the Southern Hemisphere point to the declining anthropogenic emissions of CO and C<sub>2</sub>H<sub>6</sub>

Trends and variations in CO, C<sub>2</sub>H<sub>6</sub>, and HCN in the Southern Hemisphere point to the declining anthropogenic emissions of CO and C<sub>2</sub>H<sub>6</sub>