Zobrazeno 1 - 10
of 751
pro vyhledávání: '"R A, Weber"'
A multi-site passive approach to studying the emissions and evolution of smoke from prescribed fires
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 12749-12773 (2024)
We conducted a 2-year study utilizing a network of fixed sites with sampling throughout an extended prescribed burning period to characterize the emissions and evolution of smoke from silvicultural prescribed burning at a military base in the southea
Externí odkaz:
https://doaj.org/article/11fbff83bd2846309edd4ec8277f1095
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 1, Pp n/a-n/a (2024)
Abstract Furans are a major class of volatile organic compounds emitted from biomass burning. Their high reactivity with atmospheric oxidants leads to the formation of secondary organic aerosol (SOA), including secondary brown carbon (BrC) that can a
Externí odkaz:
https://doaj.org/article/0a4ccc17409d4508875e7c3099e0b12b
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 14987-15019 (2022)
Gas- and particle-phase molecular markers provide highly specific information about the sources and atmospheric processes that contribute to air pollution. In urban areas, major sources of pollution are changing as regulation selectively mitigates so
Externí odkaz:
https://doaj.org/article/33b2ac3803cd4775a5548053a36c4538
Autor:
T. R. Watters, N. C. Schmerr, R. C. Weber, C. L. Johnson, E. J. Speyerer, M. S. Robinson, M. E. Banks
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 1, p 22 (2024)
The lunar south pole regions are subjected to global stresses that result in contractional deformation and associated seismicity. This deformation is mainly expressed by lobate thrust fault scarps; examples are globally distributed, including polar r
Externí odkaz:
https://doaj.org/article/f70d4bb2d83a4c538d8245b3c74ac96e
Autor:
M. Knapmeyer, S. Stähler, A.‐C. Plesa, S. Ceylan, C. Charalambous, J. Clinton, N. Dahmen, C. Durán, A. Horleston, T. Kawamura, D. Kim, J. Li, M. Plasman, G. Zenhäusern, R. C. Weber, D. Giardini, M. P. Panning, P. Lognonné, W. B. Banerdt
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 7, Pp n/a-n/a (2023)
Abstract The seismic activity of a planet can be described by the corner magnitude, events larger than which are extremely unlikely, and the seismic moment rate, the long‐term average of annual seismic moment release. Marsquake S1222a proves large
Externí odkaz:
https://doaj.org/article/a31ccf9b14634988b2b592bfcd873e2d
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 3779-3803 (2022)
The chemical composition of ambient organic aerosols plays a critical role in driving their climate and health-relevant properties and holds important clues to the sources and formation mechanisms of secondary aerosol material. In most ambient atmosp
Externí odkaz:
https://doaj.org/article/372c556193bb491e9faf635087153019
Autor:
L. Zeng, J. Dibb, E. Scheuer, J. M. Katich, J. P. Schwarz, I. Bourgeois, J. Peischl, T. Ryerson, C. Warneke, A. E. Perring, G. S. Diskin, J. P. DiGangi, J. B. Nowak, R. H. Moore, E. B. Wiggins, D. Pagonis, H. Guo, P. Campuzano-Jost, J. L. Jimenez, L. Xu, R. J. Weber
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 8009-8036 (2022)
Brown carbon (BrC) associated with aerosol particles in western United States wildfires was measured between July and August 2019 aboard the NASA DC-8 research aircraft during the Fire Influence on Regional to Global Environments and Air Quality (FIR
Externí odkaz:
https://doaj.org/article/c5c354707df748369794d521d6f51f21
Autor:
L. Zeng, A. P. Sullivan, R. A. Washenfelder, J. Dibb, E. Scheuer, T. L. Campos, J. M. Katich, E. Levin, M. A. Robinson, R. J. Weber
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 6357-6378 (2021)
Brown carbon (BrC) consists of particulate organic species that preferentially absorb light at visible and ultraviolet wavelengths. Ambient studies show that as a component of aerosol particles, BrC affects photochemical reaction rates and regional t
Externí odkaz:
https://doaj.org/article/238586161c754018abf149efdd02ecb9
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 6533-6550 (2021)
Aerosols are a source of great uncertainty in radiative forcing predictions and have poorly understood health impacts. Most aerosol mass is formed in the atmosphere from reactive gas-phase organic precursors, forming secondary organic aerosol (SOA).
Externí odkaz:
https://doaj.org/article/1bc39acb000f4e40951cf2cc784b0527
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 4707-4719 (2021)
Determination of transition metals in ambient aerosols is important due to their toxicity to human health. However, the traditional measurement techniques for metal analysis are often costly and require sophisticated instruments. In this study, we de
Externí odkaz:
https://doaj.org/article/2bfc9c6fef574b219d3ab38cbca13230