Zobrazeno 1 - 10
of 41
pro vyhledávání: '"R. P. Pokhrel"'
Autor:
Y. Shen, R. P. Pokhrel, A. P. Sullivan, E. J. T. Levin, L. A. Garofalo, D. K. Farmer, W. Permar, L. Hu, D. W. Toohey, T. Campos, E. V. Fischer, S. M. Murphy
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 12881-12901 (2024)
Aerosol absorption of visible light has an important impact on global radiative forcing. Wildfires are one of the major sources of light-absorbing aerosol, but there remains significant uncertainty about the magnitude, wavelength dependence, and blea
Externí odkaz:
https://doaj.org/article/50ed70fac0ef4a919eae2ea54472d88a
Autor:
A. P. Sullivan, R. P. Pokhrel, Y. Shen, S. M. Murphy, D. W. Toohey, T. Campos, J. Lindaas, E. V. Fischer, J. L. Collett Jr.
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 13389-13406 (2022)
Light absorbing organic carbon, or brown carbon (BrC), can be a significant contributor to the visible light absorption budget. However, the sources of BrC and the contributions of BrC to light absorption are not well understood. Biomass burning is t
Externí odkaz:
https://doaj.org/article/19e9fee3748140859d0855929d4a0e1e
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 10149-10168 (2020)
An accurate measurement of the optical properties of aerosol is critical for quantifying the effect of aerosol on climate. Uncertainties persist and results of measurements vary significantly. Biomass burning (BB) aerosol has been extensively studied
Externí odkaz:
https://doaj.org/article/a3aaf140eb514f1faacfd719f95abb61
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 10169-10191 (2020)
There are many fuels used for domestic purposes in east Africa, producing a significant atmospheric burden of the resulting aerosols, which includes biomass burning particles. However, the aerosol physicochemical properties are poorly understood. Her
Externí odkaz:
https://doaj.org/article/082bf1de543542a58655db94ea3a761c
Autor:
R. P. Pokhrel, E. R. Beamesderfer, N. L. Wagner, J. M. Langridge, D. A. Lack, T. Jayarathne, E. A. Stone, C. E. Stockwell, R. J. Yokelson, S. M. Murphy
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Iss 8, Pp 5063-5078 (2017)
A wide range of globally significant biomass fuels were burned during the fourth Fire Lab at Missoula Experiment (FLAME-4). A multi-channel photoacoustic absorption spectrometer (PAS) measured dry absorption at 405, 532, and 660 nm and thermally denu
Externí odkaz:
https://doaj.org/article/af9d6a26fecf49e8b6466e887a0cd0fd
Autor:
R. P. Pokhrel, N. L. Wagner, J. M. Langridge, D. A. Lack, T. Jayarathne, E. A. Stone, C. E. Stockwell, R. J. Yokelson, S. M. Murphy
Publikováno v:
Atmospheric Chemistry and Physics, Vol 16, Pp 9549-9561 (2016)
Single-scattering albedo (SSA) and absorption Ångström exponent (AAE) are two critical parameters in determining the impact of absorbing aerosol on the Earth's radiative balance. Aerosol emitted by biomass burning represent a significant fractio
Externí odkaz:
https://doaj.org/article/cccb10b54c8344c78e93a3cc40274f71
Autor:
R. P. Pokhrel, Ville Vakkari, Nicolas Bellouin, Shane M. Murphy, Shang Liu, Duli Chand, Pieter G. van Zyl, Xiaohong Liu, Gunnar Myhre, Johan P. Beukes, Duncan Watson-Paris, Tero Mielonen, Rawad Saleh, Hunter Brown, Harri Kokkola, Philip Stier, Ragnhild Bieltvedt Skeie, Michael Schulz, Ben Johnson, Zheng Lu, Tommi Bergman
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-15 (2021)
Nature Communications
Nature Communications
Uncertainty in the representation of biomass burning (BB) aerosol composition and optical properties in climate models contributes to a range in modeled aerosol effects on incoming solar radiation. Depending on the model, the top-of-the-atmosphere BB
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73911bc2e2f4e932c67141212644ea98
https://doaj.org/article/67978b2f585942e598b2d0218c1495b2
https://doaj.org/article/67978b2f585942e598b2d0218c1495b2
Publikováno v:
Kathmandu University Medical Journal. 18:376-380
Background Advantages due to immunization are numerous and cannot be avoided but at the same time pain inflicted on babies needs to be addressed when possible. Pain associated with immunization injections has often been overlooked when remedies are a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::932b97d3d61bfd1ac21ff4407b52edd5
https://doi.org/10.3126/kumj.v18i4.49249
https://doi.org/10.3126/kumj.v18i4.49249
Autor:
Lu Hu, Yingjie Shen, Qiaoyun Peng, Frank Flocke, Matson A. Pothier, Emily V. Fischer, Samuel R. Hall, Sonia M. Kreidenweis, R. P. Pokhrel, Joel A. Thornton, Ben H. Lee, Teresa Campos, Wade Permar, Xuan Zhang, Delphine K. Farmer, Shane M. Murphy, Carley D. Fredrickson, Lauren A. Garofalo, Kirk Ullmann, Brett B. Palm
Publikováno v:
Proc Natl Acad Sci U S A
The evolution of organic aerosol (OA) and brown carbon (BrC) in wildfire plumes, including the relative contributions of primary versus secondary sources, has been uncertain in part because of limited knowledge of the precursor emissions and the chem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e51553b17ece510e282f288717843a7a
https://doi.org/10.1073/pnas.2012218117
https://doi.org/10.1073/pnas.2012218117
Publikováno v:
Journal of Geophysical Research: Atmospheres. 126
Biomass burning (BB) is a major source of pollutants that impact local, regional, and global climate, air quality, and public health. However, the influence of burning conditions and fuel type on e...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc7b479b10344480e539e196c42c694c
https://doi.org/10.1029/2021jd034731
https://doi.org/10.1029/2021jd034731