Zobrazeno 1 - 10
of 5 178
pro vyhledávání: '"S, Zhai"'
Autor:
H. Lin, L. K. Emmons, E. W. Lundgren, L. H. Yang, X. Feng, R. Dang, S. Zhai, Y. Tang, M. M. Kelp, N. K. Colombi, S. D. Eastham, T. M. Fritz, D. J. Jacob
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 8607-8624 (2024)
Tropospheric ozone is a major air pollutant and greenhouse gas. It is also the primary precursor of OH, the main tropospheric oxidant. Global atmospheric chemistry models show large differences in their simulations of tropospheric ozone budgets. Here
Externí odkaz:
https://doaj.org/article/712cd78ebcad42cf96a097d637349c22
Autor:
L. H. Yang, D. J. Jacob, R. Dang, Y. J. Oak, H. Lin, J. Kim, S. Zhai, N. K. Colombi, D. C. Pendergrass, E. Beaudry, V. Shah, X. Feng, R. M. Yantosca, H. Chong, J. Park, H. Lee, W.-J. Lee, S. Kim, E. Kim, K. R. Travis, J. H. Crawford, H. Liao
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 7027-7039 (2024)
Nitrogen oxide radicals (NOx≡NO+NO2) emitted by fuel combustion are important precursors of ozone and particulate matter pollution, and NO2 itself is harmful to public health. The Geostationary Environment Monitoring Spectrometer (GEMS), launched i
Externí odkaz:
https://doaj.org/article/9c1c8982c1c147dbbebbedd70bf09f8e
Publikováno v:
Mechanical Sciences, Vol 15, Pp 293-304 (2024)
In order to deeply understand the cutting mechanism of SiCp / Al in ultrasonic vibration-assisted turning, a prediction model of a cutting temperature field of SiCp / Al composites in UVAC (ultrasonic vibration-assisted cutting) was established. A th
Externí odkaz:
https://doaj.org/article/039db98969c24948a50c4f98ea1d8be1
Autor:
H. Zhu, R. V. Martin, B. Croft, S. Zhai, C. Li, L. Bindle, J. R. Pierce, R. Y.-W. Chang, B. E. Anderson, L. D. Ziemba, J. W. Hair, R. A. Ferrare, C. A. Hostetler, I. Singh, D. Chatterjee, J. L. Jimenez, P. Campuzano-Jost, B. A. Nault, J. E. Dibb, J. S. Schwarz, A. Weinheimer
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 5023-5042 (2023)
Accurate representation of aerosol optical properties is essential for the modeling and remote sensing of atmospheric aerosols. Although aerosol optical properties are strongly dependent upon the aerosol size distribution, the use of detailed aerosol
Externí odkaz:
https://doaj.org/article/13fc94a29eb449f7a4bb8787fe8d9e6e
Autor:
S. Zhai, D. J. Jacob, D. C. Pendergrass, N. K. Colombi, V. Shah, L. H. Yang, Q. Zhang, S. Wang, H. Kim, Y. Sun, J.-S. Choi, J.-S. Park, G. Luo, F. Yu, J.-H. Woo, Y. Kim, J. E. Dibb, T. Lee, J.-S. Han, B. E. Anderson, K. Li, H. Liao
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 4271-4281 (2023)
Air quality network data in China and South Korea show very high year-round mass concentrations of coarse particulate matter (PM), as inferred by the difference between PM10 and PM2.5. Coarse PM concentrations in 2015 averaged 52 µg m−3 in the Nor
Externí odkaz:
https://doaj.org/article/4cdf89ae69f74737b9d41e21dddd29c3
Autor:
N. K. Colombi, D. J. Jacob, L. H. Yang, S. Zhai, V. Shah, S. K. Grange, R. M. Yantosca, S. Kim, H. Liao
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 4031-4044 (2023)
Surface ozone pollution in South Korea has increased over the past 2 decades, despite efforts to decrease emissions, and is pervasively in exceedance of the maximum daily 8 h average (MDA8) standard of 60 ppb. Here, we investigate the 2015–2019 tre
Externí odkaz:
https://doaj.org/article/ae73e27b702a4cc985cd007fe12da8ab
Autor:
L. H. Yang, D. J. Jacob, N. K. Colombi, S. Zhai, K. H. Bates, V. Shah, E. Beaudry, R. M. Yantosca, H. Lin, J. F. Brewer, H. Chong, K. R. Travis, J. H. Crawford, L. N. Lamsal, J.-H. Koo, J. Kim
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 2465-2481 (2023)
Nitrogen oxides (NOx≡ NO + NO2) are of central importance for air quality, climate forcing, and nitrogen deposition to ecosystems. The Geostationary Environment Monitoring Spectrometer (GEMS) is now providing hourly NO2 satellite observations over
Externí odkaz:
https://doaj.org/article/78ec8ac36d044cfd9ff897908012878f
Autor:
W. F. Swanson, C. D. Holmes, W. R. Simpson, K. Confer, L. Marelle, J. L. Thomas, L. Jaeglé, B. Alexander, S. Zhai, Q. Chen, X. Wang, T. Sherwen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 14467-14488 (2022)
Reactive halogens play a prominent role in the atmospheric chemistry of the Arctic during springtime. Field measurements and modeling studies suggest that halogens are emitted into the atmosphere from snowpack and reactions on wind-blown snow-sourced
Externí odkaz:
https://doaj.org/article/a5bfa01731f744afb183b2320b89aeb4
Autor:
K. R. Travis, J. H. Crawford, G. Chen, C. E. Jordan, B. A. Nault, H. Kim, J. L. Jimenez, P. Campuzano-Jost, J. E. Dibb, J.-H. Woo, Y. Kim, S. Zhai, X. Wang, E. E. McDuffie, G. Luo, F. Yu, S. Kim, I. J. Simpson, D. R. Blake, L. Chang, M. J. Kim
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 7933-7958 (2022)
High levels of fine particulate matter (PM2.5) pollution in East Asia often exceed local air quality standards. Observations from the Korea–United States Air Quality (KORUS-AQ) field campaign in May and June 2016 showed that development of extreme
Externí odkaz:
https://doaj.org/article/9f84fd0588d74363ae04242ed44a6cbe
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 1075-1091 (2022)
We use 2011–2019 aerosol optical depth (AOD) observations from the Geostationary Ocean Color Imager (GOCI) instrument over East Asia to infer 24 h daily surface fine particulate matter (PM2.5) concentrations at a continuous 6 × 6 km2 resolution ov
Externí odkaz:
https://doaj.org/article/4ee9879bae0945028af27b3aa4bd8f34