Amie Dobracki
YOU?
Author Swipe
View article: Atmospheric processing and aerosol aging responsible for observed increase in absorptivity of long-range-transported smoke over the southeast Atlantic
Atmospheric processing and aerosol aging responsible for observed increase in absorptivity of long-range-transported smoke over the southeast Atlantic Open
Biomass burning aerosol (BBA) from agricultural fires in southern Africa contributes about one-third of the global carbonaceous aerosol load. These particles have strong radiative effects in the southeast Atlantic (SEA), which depend in pa…
View article: Burning conditions and transportation pathways determine biomass-burning aerosol properties in the Ascension Island marine boundary layer
Burning conditions and transportation pathways determine biomass-burning aerosol properties in the Ascension Island marine boundary layer Open
African biomass-burning aerosol (BBA) in the southeast Atlantic Ocean (SEA) marine boundary layer (MBL) is an important contributor to Earth's radiation budget, yet its representation remains poorly constrained in regional and global clima…
View article: Atmospheric processing and aerosol aging responsible for observed increase in absorptivity of long-range transported smoke over the southeast Atlantic
Atmospheric processing and aerosol aging responsible for observed increase in absorptivity of long-range transported smoke over the southeast Atlantic Open
Biomass burning aerosols (BBA) from agricultural fires in southern Africa contribute about one-third of global carbonaceous aerosol load. These particles have strong radiative effects in the southeast Atlantic (SEA), which depend on the ra…
View article: Burning conditions and transportation pathways determine biomass-burning aerosol properties in the Ascension Island marine boundary layer
Burning conditions and transportation pathways determine biomass-burning aerosol properties in the Ascension Island marine boundary layer Open
African biomass-burning aerosol (BBA) in the southeast Atlantic Ocean (SEA) marine boundary layer (MBL) is an important contributor to Earth’s radiation budget yet its representation remains poorly constrained in regional and global climat…
View article: Supplementary material to "Burning conditions and transportation pathways determine biomass-burning aerosol properties in the Ascension Island marine boundary layer"
Supplementary material to "Burning conditions and transportation pathways determine biomass-burning aerosol properties in the Ascension Island marine boundary layer" Open
Figure S1.Monthly ERA 5 winds (m s -1 ) with monthly mean CAMS CO (ppb) at 950 hPa, 800 hPa, and 700 hPa illustrate aerosol transportation in a) June, b) July, c) August, and d) September.Red and orange stars denote the locations of Ascens…
View article: Comment on egusphere-2023-886
Comment on egusphere-2023-886 Open
Abstract. A large part of the uncertainty in climate projections comes from poorly understood or constrained aerosol properties (e.g., particle size, composition, mixing state, aging processes) and aerosol-cloud interactions, as well as th…
View article: Biomass-burning smoke properties and its interactions with marine stratocumulus clouds in WRF-CAM5 and southeastern Atlantic field campaigns
Biomass-burning smoke properties and its interactions with marine stratocumulus clouds in WRF-CAM5 and southeastern Atlantic field campaigns Open
A large part of the uncertainty in climate projections comes from poorly understood or constrained aerosol properties (e.g., particle size, composition, mixing state, aging processes) and aerosol-cloud interactions, as well as the difficul…
View article: An attribution of the low single-scattering albedo of biomass burning aerosol over the southeastern Atlantic
An attribution of the low single-scattering albedo of biomass burning aerosol over the southeastern Atlantic Open
Aerosol over the remote southeastern Atlantic is some of the most sunlight-absorbing aerosol on the planet: the in situ free-tropospheric single-scattering albedo at the 530 nm wavelength (SSA530 nm) ranges from 0.83 to 0.89 within ORACLES…
View article: Use of lidar aerosol extinction and backscatter coefficients to estimate cloud condensation nuclei (CCN) concentrations in the southeast Atlantic
Use of lidar aerosol extinction and backscatter coefficients to estimate cloud condensation nuclei (CCN) concentrations in the southeast Atlantic Open
Accurately capturing cloud condensation nuclei (CCN) concentrations is key to understanding the aerosol–cloud interactions that continue to feature the highest uncertainty amongst numerous climate forcings. In situ CCN observations are spa…
View article: Comment on acp-2022-501
Comment on acp-2022-501 Open
Abstract. Aerosol over the remote southeast Atlantic is some of the most sunlight-absorbing aerosol on the planet: the in-situ free-tropospheric single-scattering albedo at the 530 nm wavelength (SSA530nm) ranges from 0.83 to 0.89 within O…
View article: Intercomparison of airborne and surface-based measurements during the CLARIFY, ORACLES and LASIC field experiments
Intercomparison of airborne and surface-based measurements during the CLARIFY, ORACLES and LASIC field experiments Open
Data are presented from intercomparisons between two research aircraft, the FAAM BAe-146 and the NASA Lockheed P3, and between the BAe-146 and the surface-based DOE (Department of Energy) ARM (Atmospheric Radiation Measurement) Mobile Faci…
View article: An attribution of the low single-scattering albedo of biomass-burning aerosol over the southeast Atlantic
An attribution of the low single-scattering albedo of biomass-burning aerosol over the southeast Atlantic Open
Aerosol over the remote southeast Atlantic is some of the most sunlight-absorbing aerosol on the planet: the in-situ free-tropospheric single-scattering albedo at the 530 nm wavelength (SSA530nm) ranges from 0.83 to 0.89 within ORACLES (Ob…
View article: Biomass burning and marine aerosol processing over the southeast Atlantic Ocean: a TEM single-particle analysis
Biomass burning and marine aerosol processing over the southeast Atlantic Ocean: a TEM single-particle analysis Open
This study characterizes single-particle aerosol composition from filters collected during the ObseRvations of Aerosols above CLouds and their intEractionS (ORACLES) and CLoud–Aerosol–Radiation Interaction and Forcing: Year 2017 (CLARIFY-2…
View article: Light absorption by brown carbon over the South-East Atlantic Ocean
Light absorption by brown carbon over the South-East Atlantic Ocean Open
Biomass burning emissions often contain brown carbon (BrC), which represents a large family of light-absorbing organics that are chemically complex, thus making it difficult to estimate their absorption of incoming solar radiation, resulti…
View article: Marine Shallow Cloud Adjustments to the Presence of Shortwave-Absorbing Aerosols: Advancing Understanding Through a Combined Analysis of Lasic Datasets and Process Modeling (Final Report)
Marine Shallow Cloud Adjustments to the Presence of Shortwave-Absorbing Aerosols: Advancing Understanding Through a Combined Analysis of Lasic Datasets and Process Modeling (Final Report) Open
This is a final report for this award, whose purpose was to support the analysis of data emanating from the LASIC (Layered Atlantic Smoke Interaction with Clouds) campaign. (Layered Atlantic Smoke Interactions with Clouds) is a strategy to…
View article: Non-reversible aging can increase solar absorption in African biomass burning aerosol plumes of intermediate age
Non-reversible aging can increase solar absorption in African biomass burning aerosol plumes of intermediate age Open
<p>Recent studies highlight that biomass-burning aerosol over the remote southeast Atlantic is some of the most sunlight-absorbing aerosol on the planet. <em>In-situ</em> measurements of single-scattering albedo at the 53…
View article: Intercomparison of airborne and surface-based measurements during the CLARIFY, ORACLES and LASIC field experiments
Intercomparison of airborne and surface-based measurements during the CLARIFY, ORACLES and LASIC field experiments Open
Data are presented from intercomparisons between two research aircraft, the FAAM BAe-146 and the NASA Lockheed P3, and between the BAe-146 and the surface-based DOE (Department of Energy) ARM (Atmospheric Radiation Monitoring) Mobile Facil…
View article: Comment on acp-2021-1000
Comment on acp-2021-1000 Open
Biomass burning emissions often contain brown carbon (BrC), which represents a large family of light-absorbing organics that is chemically complex and therefore difficult to estimate their absorption of incoming solar radiation, resulting …
View article: Supplementary material to "Light Absorption by Brown Carbon over the South-East Atlantic Ocean"
Supplementary material to "Light Absorption by Brown Carbon over the South-East Atlantic Ocean" Open
A High-Resolution Time-of-Flight Aerosol Mass Spectrometer (HR-ToF-AMS, Aerodyne Research, Inc.) was deployed to obtain mass concentrations of sulphate (SO !"# ), nitrate (NO $ # ), ammonium (NH !% ), chloride (Cl -), and organic aerosol (…
View article: Light Absorption by Brown Carbon over the South-East Atlantic Ocean
Light Absorption by Brown Carbon over the South-East Atlantic Ocean Open
Biomass burning emissions often contain brown carbon (BrC), which represents a large family of light-absorbing organics that is chemically complex and therefore difficult to estimate their absorption of incoming solar radiation, resulting …
View article: Comment on acp-2021-1081
Comment on acp-2021-1081 Open
Abstract. Recent studies highlight that biomass-burning aerosol over the remote southeast Atlantic is some of the most sunlight-absorbing aerosol on the planet. In-situ measurements of single-scattering albedo at the 530 nm wavelength (SSA…
View article: Multi-campaign analysis of smoke properties and cloud interactions in the Southeast Atlantic using ORACLES, LASIC, and CLARIFY data with WRF-CAM5
Multi-campaign analysis of smoke properties and cloud interactions in the Southeast Atlantic using ORACLES, LASIC, and CLARIFY data with WRF-CAM5 Open
The southeast Atlantic Ocean provides an excellent natural laboratory to study smoke-cloud interactions, a large driver of uncertainty in climate projections. The value of studying this in particular region is largely attributable to two f…
View article: Non-reversible aging can increase solar absorption in African biomass burning aerosol plumes of intermediate age
Non-reversible aging can increase solar absorption in African biomass burning aerosol plumes of intermediate age Open
Recent studies highlight that biomass-burning aerosol over the remote southeast Atlantic is some of the most sunlight-absorbing aerosol on the planet. In-situ measurements of single-scattering albedo at the 530 nm wavelength (SSA530nm) ran…
View article: Modeled and observed properties related to the direct aerosol radiative effect of biomass burning aerosol over the southeastern Atlantic
Modeled and observed properties related to the direct aerosol radiative effect of biomass burning aerosol over the southeastern Atlantic Open
Biomass burning smoke is advected over the southeastern Atlantic Ocean between July and October of each year. This smoke plume overlies and mixes into a region of persistent low marine clouds. Model calculations of climate forcing by this …
View article: Supplementary material to &quot;Non-reversible aging can increase solar absorption in African biomass burning aerosol plumes of intermediate age&quot;
Supplementary material to "Non-reversible aging can increase solar absorption in African biomass burning aerosol plumes of intermediate age" Open
Sampling InletA high-resolution aerosol mass spectrometer, nephelometers, absorption and soot photometers, and CO/CO 2 analyzer were all situated behind a Solid Diffuser Inlet (SDI), with the nephelometers located closest to the inlet and …
View article: Supplementary Table 1 in Cloud processing and weeklong ageing affect biomass burning aerosol properties over the south-eastern Atlantic
Supplementary Table 1 in Cloud processing and weeklong ageing affect biomass burning aerosol properties over the south-eastern Atlantic Open
Supplementary Table 1
View article: Undersizing of aged African biomass burning aerosol by an ultra-high-sensitivity aerosol spectrometer
Undersizing of aged African biomass burning aerosol by an ultra-high-sensitivity aerosol spectrometer Open
The ultra-high-sensitivity aerosol spectrometer (UHSAS) differs from most other optical particle spectrometers by using a high-power infrared (IR) laser to detect small particles and reduce the sizing ambiguity due to the non-monotonicity …
View article: Comment on acp-2021-724
Comment on acp-2021-724 Open
Abstract. This study characterizes single particle aerosol composition from filters collected during the ObseRvations of Aerosols above CLouds and their intEractionS (ORACLES) and CLoud–Aerosol–Radiation Interaction and Forcing: Year 2017 …