scholarly journals Biomass burning smoke aerosol properties measured during Fire Laboratory at Missoula Experiments (FLAME)

2010 ◽  
Vol 115 (D18) ◽  
Author(s):  
E. J. T. Levin ◽  
G. R. McMeeking ◽  
C. M. Carrico ◽  
L. E. Mack ◽  
S. M. Kreidenweis ◽  
...  
Keyword(s):  
Biomass Burning ◽  
Smoke Aerosol ◽  
Fire Laboratory ◽  
Aerosol Properties

scholarly journals Modification of Local Urban Aerosol Properties by Long-Range Transport of Biomass Burning Aerosol

2018 ◽  
Vol 10 (3) ◽  
pp. 412 ◽  
Author(s):  
Iwona Stachlewska ◽  
Mateusz Samson ◽  
Olga Zawadzka ◽  
Kamila Harenda ◽  
Lucja Janicka ◽  
...  
Keyword(s):  
Long Range ◽  
Biomass Burning ◽  
Long Range Transport ◽  
Urban Aerosol ◽  
Range Transport ◽  
Biomass Burning Aerosol ◽  
Aerosol Properties

Smoke aerosol from biomass burning in Mexico: Hygroscopic smoke optical model

2001 ◽  
Vol 106 (D5) ◽  
pp. 4831-4844 ◽  
Author(s):  
Sonia M. Kreidenweis ◽  
Lorraine A. Remer ◽  
Roelof Bruintjes ◽  
Oleg Dubovik
Keyword(s):  
Biomass Burning ◽  
Optical Model ◽  
Smoke Aerosol

Evolution of biomass burning aerosol properties from an agricultural fire in southern Africa

2003 ◽  
Vol 30 (15) ◽  
Author(s):  
Steven J. Abel ◽  
Jim M. Haywood ◽  
Eleanor J. Highwood ◽  
Jia Li ◽  
Peter R. Buseck
Keyword(s):  
Biomass Burning ◽  
Southern Africa ◽  
Biomass Burning Aerosol ◽  
Aerosol Properties

Impact of biomass burning on aerosol properties over tropical wet evergreen forests of Arunachal Pradesh, India

2009 ◽  
Vol 91 (1) ◽  
pp. 87-93 ◽  
Author(s):  
K.V.S. Badarinath ◽  
K. Madhavi Latha ◽  
T.R. Kiran Chand ◽  
Prabhat K. Gupta
Keyword(s):  
Biomass Burning ◽  
Arunachal Pradesh ◽  
Evergreen Forests ◽  
Aerosol Properties

scholarly journals Statistical aerosol properties associated with fire events from 2002 to 2019 and a case analysis in 2019 over Australia

2021 ◽  
Vol 21 (5) ◽  
pp. 3833-3853
Author(s):  
Xingchuan Yang ◽  
Chuanfeng Zhao ◽  
Yikun Yang ◽  
Xing Yan ◽  
Hao Fan
Keyword(s):  
Biomass Burning ◽  
Global Climate ◽  
Carbonaceous Aerosol ◽  
Orthogonal Polarization ◽  
Hysplit Model ◽  
Southeastern Australia ◽  
Central Australia ◽  
The Impact ◽  
Aerosol Properties ◽  
Aerosol Type

Abstract. Wildfires are an important contributor to atmospheric aerosols in Australia and could significantly affect the regional and even global climate. This study investigates the impact of fire events on aerosol properties along with the long-range transport of biomass-burning aerosol over Australia using multi-year measurements from Aerosol Robotic Network (AERONET) at 10 sites over Australia, a satellite dataset derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) and the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP), reanalysis data from Modern-Era Retrospective analysis for Research and Applications version 2 (MERRA-2), and back-trajectories from the Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model. The fire count, fire radiative power (FRP), and aerosol optical depth (AOD) showed distinct and consistent interannual variations, with high values during September–February (biomass-burning period, BB period) and low values during March–August (non-biomass-burning period, non-BB period) every year. Strong correlation (0.62) was found between FRP and AOD over Australia. Furthermore, the correlation coefficient between AOD and fire count was much higher (0.63–0.85) during October–January than other months (−0.08 to 0.47). Characteristics of Australian aerosols showed pronounced differences between the BB period and non-BB period. AOD values significantly increased and fine-mode aerosol dominated during the BB period, especially in northern and southeastern Australia. Carbonaceous aerosol was the main contributor to total aerosols during the BB period, especially in September–December when carbonaceous aerosol contributed the most (30.08 %–42.91 %). Aerosol size distributions showed a bimodal character, with both fine and coarse aerosol particles generally increasing during the BB period. The megafires during the BB period of 2019/2020 further demonstrated the significant impact of wildfires on aerosol properties, such as the extreme increase in AOD for most of southeastern Australia, the dominance of fine particle aerosols, and the significant increase in carbonaceous and dust aerosols in southeastern and central Australia, respectively. Moreover, smoke was found to be the dominant aerosol type detected at heights from 2.5 to 12 km in southeastern Australia in December 2019 and at heights from roughly 6.2 to 12 km in January 2020. In contrast, dust was detected more frequently at heights from 2 to 5 km in November 2019 and January and February 2020. A case study emphasized that the transport of biomass-burning aerosols from wildfire plumes in eastern and southern Australia significantly impacted the aerosol loading, aerosol particle size, and aerosol type of central Australia.

scholarly journals Retrieval of aerosol microphysical and optical properties above liquid clouds from POLDER/PARASOL polarization measurements

2013 ◽  
Vol 6 (4) ◽  
pp. 991-1016 ◽  
Author(s):  
F. Waquet ◽  
C. Cornet ◽  
J.-L. Deuzé ◽  
O. Dubovik ◽  
F. Ducos ◽  
...  
Keyword(s):  
Biomass Burning ◽  
Radiative Forcing ◽  
Mineral Dust ◽  
Spherical Particles ◽  
Dust Particles ◽  
Polarization Measurements ◽  
Microphysical Properties ◽  
Coarse Mode ◽  
Fine Mode ◽  
Aerosol Properties

Abstract. Most of the current aerosol retrievals from passive sensors are restricted to cloud-free scenes, which strongly reduces our ability to monitor the aerosol properties at a global scale and to estimate their radiative forcing. The presence of aerosol above clouds (AAC) affects the polarized light reflected by the cloud layer, as shown by the spaceborne measurements provided by the POlarization and Directionality of Earth Reflectances (POLDER) instrument on the PARASOL satellite. In a previous work, a first retrieval method was developed for AAC scenes and evaluated for biomass-burning aerosols transported over stratocumulus clouds. The method was restricted to the use of observations acquired at forward scattering angles (90–120°) where polarized measurements are highly sensitive to fine-mode particle scattering. Non-spherical particles in the coarse mode, such as mineral dust particles, do not much polarize light and cannot be handled with this method. In this paper, we present new developments that allow retrieving also the properties of mineral dust particles above clouds. These particles do not much polarize light but strongly reduce the polarized cloud bow generated by the liquid cloud layer beneath and observed for scattering angles around 140°. The spectral attenuation can be used to qualitatively identify the nature of the particles (i.e. accumulation mode versus coarse mode, i.e. mineral dust particles versus biomass-burning aerosols), whereas the magnitude of the attenuation is related to the optical thickness of the aerosol layer. We also use the polarized measurements acquired in the cloud bow to improve the retrieval of both the biomass-burning aerosol properties and the cloud microphysical properties. We provide accurate polarized radiance calculations for AAC scenes and evaluate the contribution of the POLDER polarization measurements for the simultaneous retrieval of the aerosol and cloud properties. We investigate various scenes with mineral dust particles and biomass-burning aerosols above clouds. For clouds, our results confirm that the droplet size distribution is narrow in high-latitude ocean regions and that the droplet effective radii retrieved from both polarization measurements and from total radiance measurements are generally close for AAC scenes (departures smaller than 2 μm). We found that the magnitude of the primary cloud bow cannot be accurately estimated with a plane parallel transfer radiative code. The errors for the modeling of the polarized cloud bow are between 4 and 8% for homogenous cloudy scenes, as shown by a 3-D radiative transfer code. These effects only weakly impact the retrieval of the Aerosol Optical Thickness (AOT) performed with a mineral dust particle model for which the microphysical properties are entirely known (relative error smaller than 6%). We show that the POLDER polarization measurements allow retrieving the AOT, the fine-mode particle size, the Ångström exponent and the fraction of spherical particles. However, the complex refractive index and the coarse-mode particle size cannot be accurately retrieved with the present polarization measurements. Our complete and accurate algorithm cannot be applied to process large amounts of data, so a simpler algorithm was developed to retrieve the AOT and the Ångström exponent above clouds in an operational way. Illustrations are provided for July–August 2008 near the African coast. Large mean AOTs above clouds at 0.865 μm (>0.3) are retrieved for oceanic regions near the coasts of South Africa that correspond to biomass-burning aerosols, whereas even larger mean AOTs above clouds for mineral dust particles (>0.6) are also retrieved near the coasts of Senegal. For these regions and time period, the direct AAC radiative forcing is likely to be significant. The final aim of this work is the global monitoring of the AAC properties and the estimation of the direct aerosol radiative forcing in cloudy scenes.

Impacts of biomass-burning on aerosol properties of a severe haze event over Shanghai

Particuology ◽  
2015 ◽  
Vol 20 ◽  
pp. 52-60 ◽  
Author(s):  
Qianshan He ◽  
Xiaoyan Zhao ◽  
Jing Lu ◽  
Guangqiang Zhou ◽  
Hequn Yang ◽  
...  
Keyword(s):  
Biomass Burning ◽  
Haze Event ◽  
Aerosol Properties

scholarly journals Statistical aerosol properties associated with fire events from 2002 to 2019 along with a case analysis in 2019 over Australia

2020 ◽  
Author(s):  
Xingchuan Yang ◽  
Chuanfeng Zhao ◽  
Yikun Yang ◽  
Xing Yan ◽  
Hao Fan
Keyword(s):  
Long Range ◽  
Biomass Burning ◽  
Case Analysis ◽  
Carbonaceous Aerosol ◽  
Long Range Transport ◽  
Southeastern Australia ◽  
Range Transport ◽  
Central Australia ◽  
Aerosol Properties ◽  
Aerosol Type

Abstract. Wildfires are an important contributor to atmospheric aerosols in Australia and could significantly affect regional and even global climate. This study investigates the impact of fire events on aerosol properties along with the long-range transport of biomass burning aerosols over Australia using multi-year measurements from Aerosol Robotic Network (AERONET) at ten sites over Australia, satellite dataset derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) and Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP), reanalysis data from Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA-2), and back-trajectories from the Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT). Strong correlation (0.62) was found between fire radiative power (FRP) and aerosol optical depth (AOD) over Australia, suggesting the significant contribution to aerosols from fires. The fire count, FRP, and AOD showed distinct and consistent interannual variations with high values during September–February (Biomass Burning period, BB period) and low values during March–August (non-Biomass Burning period, non-BB period) every year. The annual average contribution of carbonaceous, dust, sulfate and sea salt aerosols to total aerosol were 26.24 %, 23.38 %, 26.36 % and 24.02 %, respectively. The results from AERONET, MODIS, and MERRA-2 showed that AOD values significantly increased with fine mode aerosol dominated during BB period, especially in northern and southeastern Australia. Further, Carbonaceous aerosol was the main contributor to total aerosols during BB period, especially in September–December when carbonaceous aerosol contributed the most (30.08–42.91 %). The great fires during the BB period of 2019/2020 further demonstrated significant impact on aerosol properties, such as the extreme increase in AOD for most southeastern Australia, the dominance of fine particle aerosols, and the significant increase in carbonaceous and dust aerosols in southeastern and central Australia, respectively. Moreover, smoke was found as the dominant aerosol type detected at heights 2.5–12 km in southeastern Australia in December 2019 and at heights roughly from 6.2 to 12 km in January 2020. In contrast, dust was detected more frequently at heights from 2 to 5 km in November 2019, January, and February 2020. A case analysis revealed that significant changes in aerosol properties including aerosol loading, aerosol particle size, aerosol type in central Australia could be caused during the BB period of 2019/2020 due to the long-range transport of biomass burning aerosols from eastern and southern Australia.

scholarly journals Multi-dimensional satellite observations of aerosol properties and aerosol types over three major urban clusters in eastern China

2021 ◽  
Author(s):  
Yuqin Liu ◽  
Tao Lin ◽  
Juan Hong ◽  
Yonghong Wang ◽  
Lamei Shi ◽  
...  
Keyword(s):  
Vertical Distribution ◽  
Eastern China ◽  
Peak Frequency ◽  
Meteorological Conditions ◽  
River Delta ◽  
Smoke Aerosol ◽  
The Yrd ◽  
The Vertical Distribution ◽  
Aerosol Types ◽  
Aerosol Properties

Abstract. Using nine years (2007–2015) of data from passive (MODIS/Aqua) and active (CALIOP/CALIPSO) satellite measurements over China, we investigate (1) the temporal and spatial variation of aerosol properties over the Beijing-Tianjin-Hebei (BTH) region, the Yangtze River Delta (YRD) and the Pearl River Delta (PRD) and (2) the vertical distribution of aerosol types and extinction coefficients for different aerosol optical depth (AOD) and meteorological conditions. The results show the different spatial patterns and seasonal variations of the AOD over the three regions. Annual time series reveal the occurrence of AOD maxima in 2011 over the YRD and in 2012 over the BTH and PRD; thereafter the AOD decreases steadily. Using the CALIOP vertical feature mask, the contributions of different aerosol types to the AOD were analysed: contributions of dust and polluted dust decrease from north to south, contributions of clean ocean, polluted continental, clean continental and smoke aerosol increase from south to north. In the vertical, the peak frequency of occurrence (FO) for each aerosol type depends on region and season and varies with AOD and meteorological conditions. In general, three distinct layers are observed with the peak FO at the surface (clean continental and clean marine aerosol), at ~1 km (polluted dust and polluted continental aerosol) and at ~3 km (smoke aerosol), whereas dust aerosol may occur all over the altitude range considered in this study (from the surface up to 8 km). In this study nighttime CALIOP profiles were used. The comparison with daytime profiles shows substantial differences in the FO profiles with altitude which suggest effects of boundary layer dynamics and aerosol transport on the vertical distribution of aerosol types.

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