Characteristics of biomass burning emission sources, transport, and chemical speciation in enhanced springtime tropospheric ozone profile over Hong Kong

CO is an abundant tropospheric pollutant that originates from numerous emission sources. Large CO fluxes are emitted during intense Biomass Burning (BB) events over relatively short periods of a few days, which combined with the tropospheric lifetime of a month, act as a marker for air-masses influenced by burning events. Once lifted out the boundary layer, air masses influenced by BB undergo chemical processing which can be assessed by subsequent changes in tropospheric ozone. Increases in ozone and aerosol in the Free Troposphere influence photolysis at lower levels impact surface air-quality. Therefore, capturing this feedback is a necessary step towards determining tropospheric lifetimes of greenhouse gases and pollutants, which affects the fraction of transport out of the burning regions.Here we present results from the Integrated Forecasting System (IFS) of ECMWF, which is the core of the Copernicus Atmosphere Monitoring Service (CAMS). We perform simulations with three independent chemistry modules (modified CB05, MOZART, MOCAGE), including variable photolysis schemes and variable approaches for coupling tropospheric aerosol. We choose the simulation year of 2019 corresponding with the FIREXAQ measurement campaign which occurred over California. We subsequently assess the ability of IFS in terms of (i) the representation of the transport of air masses effected by large BB emissions, (ii) the ability towards capturing chemical processing which occurs in such plumes and (iii) using large discrepancies in the simulated tropospheric profiles to imply deficiencies in BB emission estimates.&#160;

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Investigation of the short-time variability of tropical tropospheric ozone

Annales Geophysicae ◽

10.5194/angeo-21-2095-2003 ◽

2003 ◽

Vol 21 (10) ◽

pp. 2095-2106 ◽

Cited By ~ 9

Author(s):

T. Randriambelo ◽

J.-L. Baray ◽

S. Baldy ◽

A. M. Thompson ◽

S. Oltmans ◽

...

Keyword(s):

Biomass Burning ◽

Tropospheric Ozone ◽

Transition Period ◽

Meteorological Data ◽

Tropical Meteorology ◽

Atmospheric Composition ◽

Time Variability ◽

Reunion Island ◽

Ozone Profile ◽

Réunion Island

Abstract. Since 1998, a ground-based tropospheric ozone lidar has been running at Reunion Island and has been involved with a daily measurement campaign that was performed in the latter part of the biomass burning season, during November–December 1999. The averaged ozone profile obtained during November–December 1999 agrees well with the averaged ozone profile obtained from the ozonesondes launch at Reunion during November–December (1992– 2001). Comparing weekly sonde launches (part of the Southern Hemisphere Additional Ozonesondes: SHADOZ program) with the daily ground-based lidar observations shows that some striking features of the day-to-day variability profiles are not observed in the sonde measurements. Ozone profiles respond to the nature of disturbances which vary from one day to the next. The vertical ozone distribution at Reunion is examined as a function of prevailing atmospheric circulation. Back trajectories show that most of the enhanced ozone crossed over biomass burning and convectively active regions in Madagascar and the southern African continent. The analyses of the meteorological data show that ozone stratification profiles are in agreement with the movement of the synoptic situations in November–December 1999. Three different sequences of transport are explained using wind fields. The first sequence from 23 to 25 November is characterized by northerly transport; during the second sequence from 26 to 30 November, the air masses are influenced by meridional transport. The third sequence from 2 to 6 December is characterized by westerly transport associated with the sub-tropical jet stream. The large, standard deviations of lidar profiles in the middle and upper troposphere are in agreement with the upper wind variabilities which evidence passing ridge and trough disturbances. During the transition period between the dry season and the wet season, multiple ozone sources including stratosphere-troposphere exchanges, convection and biomass burning contribute to tropospheric ozone at Reunion Island through sporadic events characterized by a large spatial and temporal variability.Key words. Atmospheric composition and structure (troposphere-composition and chemistry) – Meteorology and atmospheric dynamics (climatology; tropical meteorology)

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A case study on the biomass burning in southeast Asia and enhancement of tropospheric ozone over Hong Kong

Geophysical Research Letters ◽

10.1029/1999gl010855 ◽

2000 ◽

Vol 27 (10) ◽

pp. 1479-1482 ◽

Cited By ~ 45

Author(s):

L. Y. Chan ◽

C. Y. Chan ◽

H. Y. Liu ◽

S. Christopher ◽

S. J. Oltmans ◽

...

Keyword(s):

Hong Kong ◽

Southeast Asia ◽

Biomass Burning ◽

Tropospheric Ozone

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Transport and Variability of Tropospheric Ozone over Oceania and Southern Pacific during the 2019–20 Australian Bushfires

Remote Sensing ◽

10.3390/rs13163092 ◽

2021 ◽

Vol 13 (16) ◽

pp. 3092

Author(s):

Nelson Bègue ◽

Hassan Bencherif ◽

Fabrice Jégou ◽

Hélène Vérèmes ◽

Sergey Khaykin ◽

...

Keyword(s):

Carbon Monoxide ◽

Biomass Burning ◽

Tropospheric Ozone ◽

Regional Scale ◽

Smoke Plume ◽

Upper Troposphere ◽

Spatial And Temporal Distributions ◽

Ozone Profile ◽

Range Transport ◽

The Vertical Distribution

The present study contributes to the scientific effort for a better understanding of the potential of the Australian biomass burning events to influence tropospheric trace gas abundances at the regional scale. In order to exclude the influence of the long-range transport of ozone precursors from biomass burning plumes originating from Southern America and Africa, the analysis of the Australian smoke plume has been driven over the period December 2019 to January 2020. This study uses satellite (IASI, MLS, MODIS, CALIOP) and ground-based (sun-photometer, FTIR, ozone radiosondes) observations. The highest values of aerosol optical depth (AOD) and carbon monoxide total columns are observed over Southern and Central Australia. Transport is responsible for the spatial and temporal distributions of aerosols and carbon monoxide over Australia, and also the transport of the smoke plume outside the continent. The dispersion of the tropospheric smoke plume over Oceania and Southern Pacific extends from tropical to extratropical latitudes. Ozone radiosonde measurements performed at Samoa (14.4°S, 170.6°W) and Lauder (45.0°S, 169.4°E) indicate an increase in mid-tropospheric ozone (6–9 km) (from 10% to 43%) linked to the Australian biomass burning plume. This increase in mid-tropospheric ozone induced by the transport of the smoke plume was found to be consistent with MLS observations over the tropical and extratropical latitudes. The smoke plume over the Southern Pacific was organized as a stretchable anticyclonic rolling which impacted the ozone variability in the tropical and subtropical upper-troposphere over Oceania. This is corroborated by the ozone profile measurements at Samoa which exhibit an enhanced ozone layer (29%) in the upper-troposphere. Our results suggest that the transport of Australian biomass burning plumes have significantly impacted the vertical distribution of ozone in the mid-troposphere southern tropical to extratropical latitudes during the 2019–20 extreme Australian bushfires.

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Tropospheric ozone variability over Hong Kong based on recent 20‐year (2000–2019) ozonesonde observation

Journal of Geophysical Research Atmospheres ◽

10.1029/2020jd033054 ◽

2020 ◽

Author(s):

Zhiheng Liao ◽

Zhenhao Ling ◽

Meng Gao ◽

Jiaren Sun ◽

Wei Zhao ◽

...

Keyword(s):

Hong Kong ◽

Tropospheric Ozone ◽

Year 2000

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Photochemistry in biomass burning plumes and implications for tropospheric ozone over the tropical South Atlantic

Journal of Geophysical Research Atmospheres ◽

10.1029/97jd02612 ◽

1998 ◽

Vol 103 (D7) ◽

pp. 8401-8423 ◽

Cited By ~ 172

Author(s):

Denise L. Mauzerall ◽

Jennifer A. Logan ◽

Daniel J. Jacob ◽

Bruce E. Anderson ◽

Donald R. Blake ◽

...

Keyword(s):

Biomass Burning ◽

Tropospheric Ozone ◽

South Atlantic

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Evaluation of ozone profile and tropospheric ozone retrievals from GEMS and OMI spectra

Atmospheric Measurement Techniques ◽

10.5194/amt-6-239-2013 ◽

2013 ◽

Vol 6 (2) ◽

pp. 239-249 ◽

Cited By ~ 27

Author(s):

J. Bak ◽

J. H. Kim ◽

X. Liu ◽

K. Chance ◽

J. Kim

Keyword(s):

Spectral Resolution ◽

Tropospheric Ozone ◽

Stratospheric Ozone ◽

A Priori ◽

Ozone Monitoring Instrument ◽

Satellite Platform ◽

Ozone Profile ◽

Retrieval Errors ◽

Standard Deviations ◽

Column Ozone

Abstract. South Korea is planning to launch the GEMS (Geostationary Environment Monitoring Spectrometer) instrument into the GeoKOMPSAT (Geostationary Korea Multi-Purpose SATellite) platform in 2018 to monitor tropospheric air pollutants on an hourly basis over East Asia. GEMS will measure backscattered UV radiances covering the 300–500 nm wavelength range with a spectral resolution of 0.6 nm. The main objective of this study is to evaluate ozone profiles and stratospheric column ozone amounts retrieved from simulated GEMS measurements. Ozone Monitoring Instrument (OMI) Level 1B radiances, which have the spectral range 270–500 nm at spectral resolution of 0.42–0.63 nm, are used to simulate the GEMS radiances. An optimal estimation-based ozone profile algorithm is used to retrieve ozone profiles from simulated GEMS radiances. Firstly, we compare the retrieval characteristics (including averaging kernels, degrees of freedom for signal, and retrieval error) derived from the 270–330 nm (OMI) and 300–330 nm (GEMS) wavelength ranges. This comparison shows that the effect of not using measurements below 300 nm on retrieval characteristics in the troposphere is insignificant. However, the stratospheric ozone information in terms of DFS decreases greatly from OMI to GEMS, by a factor of ∼2. The number of the independent pieces of information available from GEMS measurements is estimated to 3 on average in the stratosphere, with associated retrieval errors of ~1% in stratospheric column ozone. The difference between OMI and GEMS retrieval characteristics is apparent for retrieving ozone layers above ~20 km, with a reduction in the sensitivity and an increase in the retrieval errors for GEMS. We further investigate whether GEMS can resolve the stratospheric ozone variation observed from high vertical resolution Earth Observing System (EOS) Microwave Limb Sounder (MLS). The differences in stratospheric ozone profiles between GEMS and MLS are comparable to those between OMI and MLS below ~3 hPa (~40 km), except with slightly larger biases and larger standard deviations by up to 5%. At pressure altitudes above ~3 hPa, GEMS retrievals show strong influence of a priori and large differences with MLS, which, however, can be sufficiently improved by using better a priori information. The GEMS-MLS differences show negative biases of less than 4% for stratospheric column ozone, with standard deviations of 1–3%, while OMI retrievals show similar agreements with MLS except for 1% smaller biases at middle and high latitudes. Based on the comparisons, we conclude that GEMS will measure tropospheric ozone and stratospheric ozone columns with accuracy comparable to that of OMI and ozone profiles with slightly worse performance than that of OMI below ~3 hPa.

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Climatology and trends of tropospheric ozone over the eastern Pacific Ocean: The influences of biomass burning and tropospheric dynamics

Geophysical Research Letters ◽

10.1029/96gl03615 ◽

1996 ◽

Vol 23 (25) ◽

pp. 3723-3726 ◽

Cited By ~ 33

Author(s):

Jae H. Kim ◽

M. J. Newchurch

Keyword(s):

Pacific Ocean ◽

Biomass Burning ◽

Tropospheric Ozone ◽

Eastern Pacific ◽

Eastern Pacific Ocean

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Analysis of the latitudinal variability of tropospheric ozone in the Arctic using the large number of aircraft and ozonesonde observations in early summer 2008

10.5194/acp-2016-422 ◽

2016 ◽

Author(s):

Gerard Ancellet ◽

Nikos Daskalakis ◽

Jean Christophe Raut ◽

Boris Quennehen ◽

François Ravetta ◽

...

Keyword(s):

Biomass Burning ◽

Tropospheric Ozone ◽

Lower Troposphere ◽

Early Summer ◽

Ozone Production ◽

The Arctic ◽

Integrated Analysis ◽

International Polar Year ◽

Latitude Range ◽

Vertical Variability

Abstract. The goal of the paper are to: (1) present tropospheric ozone (O3) climatologies in summer 2008 based on a large amount of measurements, during the International Polar Year when the Polar Study using Aircraft, Remote Sensing, Surface Measurements, and Models of Climate Chemistry, Aerosols, and Transport (POLARCAT) campaigns were conducted (2) investigate the processes that determine O3 concentrations in two different regions (Canada and Greenland) that were thoroughly studied using measurements from 3 aircraft and 7 ozonesonde stations. This paper provides an integrated analysis of these observations and the discussion of the latitudinal and vertical variability of tropospheric ozone north of 55° N during this period is performed using a regional model (WFR-Chem). Ozone, CO and potential vorticity (PV) distributions are extracted from the simulation at the measurement locations. The model is able to reproduce the O3 latitudinal and vertical variability but a negative O3 bias of 6–15 ppbv is found in the free troposphere over 4 km, especially over Canada. Ozone average concentrations are of the order of 65 ppbv at altitudes above 4 km both over Canada and Greenland, while they are less than 50 ppbv in the lower troposphere. The relative influence of stratosphere-troposphere exchange (STE) and of ozone production related to the local biomass burning (BB) emissions is discussed using differences between average values of O3, CO and PV for Southern and Northern Canada or Greenland and two vertical ranges in the troposphere: 0–4 km and 4–8 km. For Canada, the model CO distribution and the weak correlation (< 30 %) of O3 and PV suggests that stratosphere-troposphere exchange (STE) is not the major contribution to average tropospheric ozone at latitudes less than 70° N, due to the fact that local biomass burning (BB) emissions were significant during the 2008 summer period. Conversely over Greenland, significant STE is found according to the better O3 versus PV correlation (> 40 %) and the higher 75th PV percentile. A weak negative latitudinal summer ozone gradient −6 to −8 ppbv is found over Canada in the mid troposphere between 4 and 8 km. This is attributed to an efficient O3 photochemical production due to the BB emissions at latitudes less than 65° N, while STE contribution is more homogeneous in the latitude range 55° N to 70° N. A positive ozone latitudinal gradient of 12 ppbv is observed in the same altitude range over Greenland not because of an increasing latitudinal influence of STE, but because of different long range transport from multiple mid-latitude sources (North America, Europe and even Asia for latitudes higher than 77° N).

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A systematic review of the physical and chemical characteristics of pollutants from biomass burning and combustion of fossil fuels and health effects in Brazil

Cadernos de Saúde Pública ◽

10.1590/s0102-311x2011000900003 ◽

2011 ◽

Vol 27 (9) ◽

pp. 1678-1698 ◽

Cited By ~ 20

Author(s):

Beatriz Fátima Alves de Oliveira ◽

Eliane Ignotti ◽

Sandra S. Hacon

Keyword(s):

Health Effects ◽

Biomass Burning ◽

Hospital Admissions ◽

Respiratory Health ◽

Air Pollutant ◽

Pollutant Emissions ◽

Chemical Characteristics ◽

Emission Sources ◽

Physical And Chemical Characteristics ◽

Physical And Chemical

The aim of this study was to carry out a review of scientific literature published in Brazil between 2000 and 2009 on the characteristics of air pollutants from different emission sources, especially particulate matter (PM) and its effects on respiratory health. Using electronic databases, a systematic literature review was performed of all research related to air pollutant emissions. Publications were analyzed to identify the physical and chemical characteristics of pollutants from different emission sources and their related effects on the respiratory system. The PM2.5 is composed predominantly of organic compounds with 20% of inorganic elements. Higher concentrations of metals were detected in metropolitan areas than in biomass burning regions. The relative risk of hospital admissions due to respiratory diseases in children was higher than in the elderly population. The results of studies of health effects of air pollution are specific to the region where the emissions occurred and should not be used to depict the situation in other areas with different emission sources.

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