R
Raghu Betha
Researcher at University of California, San Diego
Publications - 38
Citations - 1557
Raghu Betha is an academic researcher from University of California, San Diego. The author has contributed to research in topics: Ultra-low-sulfur diesel & Haze. The author has an hindex of 20, co-authored 36 publications receiving 1240 citations. Previous affiliations of Raghu Betha include Scripps Institution of Oceanography & Singapore–MIT alliance.
Papers
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Journal ArticleDOI
2013 Southeast Asian smoke haze: Fractionation of particulate-bound elements and associated health risk
TL;DR: Deposition of inhaled potentially toxic trace elements in various regions of the human respiratory system was estimated using a Multiple-Path Particle Dosimetry model, finding that particle depositions in the respiratory system tend to be more severe during hazy days than those during nonhazy days.
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Substantial Seasonal Contribution of Observed Biogenic Sulfate Particles to Cloud Condensation Nuclei
Kevin J. Sanchez,Chia-Li Chen,Lynn M. Russell,Raghu Betha,Jun Liu,Derek J. Price,Derek J. Price,Paola Massoli,Luke D. Ziemba,Ewan Crosbie,Richard H. Moore,Markus Müller,Sven Arne Schiller,Armin Wisthaler,Armin Wisthaler,Alex K. Y. Lee,Patricia K. Quinn,Timothy S. Bates,Timothy S. Bates,Jack Porter,Thomas G. Bell,Thomas G. Bell,Eric S. Saltzman,Robert D. Vaillancourt,Michael J. Behrenfeld +24 more
TL;DR: The results show a clear seasonal difference in the marine CCN budget, which illustrates how important phytoplankton-produced DMS emissions are for CCN in the North Atlantic.
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TGA-FTIR investigation of co-combustion characteristics of blends of hydrothermally carbonized oil palm biomass (EFB) and coal
TL;DR: In this article, the composition of major gaseous pollutants released from the co-combustion process with specific reference to CO, CO2, CH4, NO, and SO2 was studied in real-time using a thermogravimetric analyzer coupled with a Fourier transform infrared spectrometry.
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Chemical speciation of trace metals emitted from Indonesian peat fires for health risk assessment
Raghu Betha,Maharani Pradani,Puji Lestari,Umid Man Joshi,Jeffrey S. Reid,Rajasekhar Balasubramanian +5 more
TL;DR: In this article, chemical speciation (exchangeable, reducible, oxidizable, and residual fractions) of 12 trace metals (Al, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Ti, V and Zn) was studied.
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Assessing the regional impact of indonesian biomass burning emissions based on organic molecular tracers and chemical mass balance modeling
Guenter Engling,Jun He,Raghu Betha,Raghu Betha,Rajasekhar Balasubramanian,Rajasekhar Balasubramanian +5 more
TL;DR: In this article, the authors investigated the effect of biomass smoke emissions on air quality in the city state of Singapore during a haze episode in October 2006, and found that significantly increased levels of airborne particulate matter (PM) and associated chemical species were observed during the haze period.