FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4376106855> ?p ?o ?g. }

• W4376106855 abstract "<strong class=journal-contentHeaderColor>Abstract.</strong> Black Carbon containing particles (BC) are strong light absorbers, causing substantial radiative heating of the atmosphere. The climate-relevant properties of BC are poorly constrained in high-elevation mountain regions, where numerous complex interactions between BC, radiation, clouds and snow have important climate implications. This study presents two-year measurements of BC microphysical and optical properties at the research station of Pic du Midi (PDM), a high-altitude observatory located at 2877 m above sea level in the French Pyrenees. Among the worldwide existing long-term monitoring sites, PDM has experiences limited influence of the planetary boundary layer (PBL), making it an appropriate site for characterizing free tropospheric (FT) BC. The classification of the dominant aerosol type using the spectral optical properties of the aerosols indicates that BC was the predominant absorption component of aerosols at PDM and controlled the variation of Single Scattering Albedo (SSA) throughout the two years. Single-particle soot photometer (SP2) measurements showed a mean mass concentrations of BC (M_BC) of 35 ng m⁻³ and a relatively constant BC core mass-equivalent diameter of around 180 nm, which are typical values for remote mountain sites. Combining the M_BC with in situ absorption measurements yielded a BC mass absorption coefficient (MAC_BC) of 9.8 ± 2.7 m² g⁻¹ at 880 nm, which corresponds to an absorption enhancement (E_abs) of 2.4 compared to that of bare BC particles with equal BC core size distribution. A significant reduction of the ratio ∆BC<em> </em>/ ∆CO when precipitation occurred along the air mass transport suggests wet removal of BC. However we found that the wet removal process did not affect the size of BC, resulting in unchanged E_abs . We observed a large seasonal contrast in BC properties with higher M_BC and E_abs in summer than winter. In winter a strong diurnal variability of MBC (E_abs) with higher (lower) values in the middle of the day was linked to the injection of BC originating from the PBL. During summer in contrast, M_BC showed no diurnal variation was rather constant despite more frequent PBL-conditions, implying that M_BC fluctuations were rather dominated by regional and long-range transport in the FT. A body of evidence suggests that biomass burning emissions effectively altered the concentration and optical properties of BC at PDM, leading to higher E_abs in summer compared to winter. The diurnal pattern of E_abs in summer was opposite to that observed in winter with maximum values of 2.9 observed at noon. We suggest that this daily variation results from photochemical processing driving BC mixing state rather than a change in BC emission source. Such direct two-year observations of BC properties provide quantitative constraints for both regional and global climate models and have the potential to close the gap between model predicted and observed effects of BC on regional radiation budget and climate. The results demonstrates the complex influence of BC emission sources, transport pathways, atmospheric dynamics and chemical reactivity in driving the light absorption of BC." @default.
• W4376106855 created "2023-05-12" @default.
• W4376106855 date "2023-05-10" @default.
• W4376106855 modified "2023-09-26" @default.
• W4376106855 title "Comment on egusphere-2023-570" @default.
• W4376106855 doi "https://doi.org/10.5194/egusphere-2023-570-rc3" @default.
• W4376106855 hasPublicationYear "2023" @default.
• W4376106855 type Work @default.
• W4376106855 citedByCount "0" @default.
• W4376106855 crossrefType "peer-review" @default.
• W4376106855 hasBestOaLocation W43761068551 @default.
• W4376106855 hasConcept C107872376 @default.
• W4376106855 hasConcept C113196181 @default.
• W4376106855 hasConcept C120665830 @default.
• W4376106855 hasConcept C121332964 @default.
• W4376106855 hasConcept C125287762 @default.
• W4376106855 hasConcept C142362112 @default.
• W4376106855 hasConcept C153294291 @default.
• W4376106855 hasConcept C185592680 @default.
• W4376106855 hasConcept C195886398 @default.
• W4376106855 hasConcept C2778552899 @default.
• W4376106855 hasConcept C2779345167 @default.
• W4376106855 hasConcept C39432304 @default.
• W4376106855 hasConcept C52119013 @default.
• W4376106855 hasConcept C554144382 @default.
• W4376106855 hasConcept C65440619 @default.
• W4376106855 hasConcept C74902906 @default.
• W4376106855 hasConcept C91586092 @default.
• W4376106855 hasConceptScore W4376106855C107872376 @default.
• W4376106855 hasConceptScore W4376106855C113196181 @default.
• W4376106855 hasConceptScore W4376106855C120665830 @default.
• W4376106855 hasConceptScore W4376106855C121332964 @default.
• W4376106855 hasConceptScore W4376106855C125287762 @default.
• W4376106855 hasConceptScore W4376106855C142362112 @default.
• W4376106855 hasConceptScore W4376106855C153294291 @default.
• W4376106855 hasConceptScore W4376106855C185592680 @default.
• W4376106855 hasConceptScore W4376106855C195886398 @default.
• W4376106855 hasConceptScore W4376106855C2778552899 @default.
• W4376106855 hasConceptScore W4376106855C2779345167 @default.
• W4376106855 hasConceptScore W4376106855C39432304 @default.
• W4376106855 hasConceptScore W4376106855C52119013 @default.
• W4376106855 hasConceptScore W4376106855C554144382 @default.
• W4376106855 hasConceptScore W4376106855C65440619 @default.
• W4376106855 hasConceptScore W4376106855C74902906 @default.
• W4376106855 hasConceptScore W4376106855C91586092 @default.
• W4376106855 hasLocation W43761068551 @default.
• W4376106855 hasOpenAccess W4376106855 @default.
• W4376106855 hasPrimaryLocation W43761068551 @default.
• W4376106855 hasRelatedWork W1990720203 @default.
• W4376106855 hasRelatedWork W2068760554 @default.
• W4376106855 hasRelatedWork W2094996837 @default.
• W4376106855 hasRelatedWork W2141086064 @default.
• W4376106855 hasRelatedWork W2164781824 @default.
• W4376106855 hasRelatedWork W2288643491 @default.
• W4376106855 hasRelatedWork W2516045248 @default.
• W4376106855 hasRelatedWork W4223652767 @default.
• W4376106855 hasRelatedWork W4224249572 @default.
• W4376106855 hasRelatedWork W4250253308 @default.
• W4376106855 isParatext "false" @default.
• W4376106855 isRetracted "false" @default.
• W4376106855 workType "peer-review" @default.