Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Hansen, Cao"'
Publikováno v:
GeoHealth, Vol 7, Iss 3, Pp n/a-n/a (2023)
Abstract We present a newly developed approach to characterize the sources of fine particulate matter (PM2.5)‐related premature deaths in Europe using the chemical transport model GEOS‐Chem and its adjoint. The contributions of emissions from eac
Externí odkaz:
https://doaj.org/article/be8409f48ab546b2a589ec11bf8a71c4
Autor:
Hansen Cao, Daven K Henze, Mark W Shephard, Enrico Dammers, Karen Cady-Pereira, Matthew Alvarado, Chantelle Lonsdale, Gan Luo, Fangqun Yu, Liye Zhu, Camille G Danielson, Eric S Edgerton
Publikováno v:
Environmental Research Letters, Vol 15, Iss 10, p 104082 (2020)
Spatiotemporal uncertainty in $\mathrm{NH_{3}}$ emissions in the US hinders prediction of environmental effects of atmospheric $\mathrm{NH_3}$ . We conducted 4D-Var inversions using CrIS remote-sensing observations and GEOS-Chem to estimate monthly $
Externí odkaz:
https://doaj.org/article/624310d503dc4dc18103bb5ae13b2986
Autor:
Hansen Cao, Muhammad O. Nawaz, Colin Harkins, Tzung-May Fu, Karen Cady-Pereira, Brian C. McDonald, Kang Sun, Daven K. Henze, Kevin W. Bowman
Publikováno v:
Environmental Science & Technology Letters. 9:3-9
In situ measurements have suggested vehicle emissions may dominate agricultural sources of NH3 in many cities, which is alarming given the potential for urban NH3 to significantly increase human ex...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6667d11f3e31e0f18c8cf8f176a4095a
https://doi.org/10.1021/acs.estlett.1c00730
https://doi.org/10.1021/acs.estlett.1c00730
Autor:
Hansen Cao
CrIS-derived NH3 emissions over EU in 2016. Find more details in Cao et al. (2022) (availableathttps://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021JD035687)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58c1bbecf249341f49d85e6605fccb48
Autor:
Jinkyul Choi, Daven K. Henze, Hansen Cao, Caroline R. Nowlan, Gonzalo González Abad, Hyeong‐Ahn Kwon, Hyung‐Min Lee, Yujin J. Oak, Rokjin J. Park, Kelvin H. Bates, Joannes D. Maasakkers, Armin Wisthaler, Andrew J. Weinheimer
Publikováno v:
Journal of Geophysical Research: Atmospheres. 127
We aim to reduce uncertainties in CH2O and other volatile organic carbon (VOC) emissions through assimilation of remote sensing data. We first update a three-dimensional (3D) chemical transport model, GEOS-Chem with the KORUSv5 anthropogenic emission
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad75cb1fbcd3d1ba0fa2da7ab880af75
https://doi.org/10.1029/2021jd035844
https://doi.org/10.1029/2021jd035844
Autor:
Joshua L. Laughner, David S. Schimel, Daniel L. Goldberg, Eric A. Kort, Alexander J. Turner, Helen Fitzmaurice, Randall V. Martin, Jessica L. Neu, Hansen Cao, Benjamin Poulter, Daven K. Henze, Joost A. de Gouw, Jinsol Kim, Paul O. Wennberg, David Crisp, Stanley P. Sander, Zhao-Cheng Zeng, Muye Ru, Jeremy Avise, Bart E Croes, Cesunica E. Ivey, Neil C. Swart, Nicole S. Lovenduski, Lesley Ott, Junjie Liu, Sina Hasheminassab, Kevin R. Gurney, Kazuyuki Miyazaki, Kelley C. Barsanti, Dylan B. A. Jones, Abhishek Chatterjee, Zhu Liu, John C. Fyfe, Susan C. Anenberg, Kevin W. Bowman, Yuk L. Yung, Francesca M. Hopkins, Galen A. McKinley, Annmarie Eldering
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America
Proceedings of the National Academy of Sciences of the United States of America, vol 118, iss 46
Proceedings of the National Academy of Sciences of the United States of America, vol 118, iss 46
Significance The COVID-19 pandemic and associated lockdowns caused significant changes to human activity that temporarily altered our imprint on the atmosphere, providing a brief glimpse of potential future changes in atmospheric composition. This ev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dea25dcc96913884191a239db7980cf0
https://resolver.caltech.edu/CaltechAUTHORS:20211111-200602979
https://resolver.caltech.edu/CaltechAUTHORS:20211111-200602979
Autor:
Hansen Cao, Daven K. Henze, Liye Zhu, Mark W. Shephard, Karen Cady‐Pereira, Enrico Dammers, Michael Sitwell, Nicholas Heath, Chantelle Lonsdale, Jesse O. Bash, Kazuyuki Miyazaki, Christophe Flechard, Yannick Fauvel, Roy Wichink Kruit, Stefan Feigenspan, Christian Brümmer, Frederik Schrader, Marsailidh M. Twigg, Sarah Leeson, Yuk S. Tang, Amy C. M. Stephens, Christine Braban, Keith Vincent, Mario Meier, Eva Seitler, Camilla Geels, Thomas Ellermann, Agnieszka Sanocka, Shannon L. Capps
Publikováno v:
Cao, H, Henze, D K, Zhu, L, Shephard, M W, Cady-Pereira, K, Dammers, E, Sitwell, M, Heath, N, Lonsdale, C, Bash, J O, Miyazaki, K, Flechard, C, Fauvel, Y, Kruit, R W, Feigenspan, S, Brümmer, C, Schrader, F, Twigg, M M, Leeson, S, Tang, Y S, Stephens, A C M, Braban, C, Vincent, K, Meier, M, Seitler, E, Geels, C, Ellermann, T, Sanocka, A & Capps, S L 2022, ' 4D-Var Inversion of European NH 3 Emissions Using CrIS NH 3 Measurements and GEOS-Chem Adjoint With Bi-Directional and Uni-Directional Flux Schemes ', Journal of Geophysical Research: Atmospheres, vol. 127, no. 9, e2021JD035687 . https://doi.org/10.1029/2021JD035687
We conduct the first 4D-Var inversion of NH3 accounting for NH3 bi-directional flux, using CrIS satellite NH3 observations over Europe in 2016. We find posterior NH3 emissions peak more in springtime than prior emissions at continental to national sc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4cf5d6fa62d9435762123b083e5d635e
https://doi.org/10.1002/essoar.10507960.1
https://doi.org/10.1002/essoar.10507960.1
Autor:
Hansen, Cao, Daven K, Henze, Liye, Zhu, Mark W, Shephard, Karen, Cady-Pereira, Enrico, Dammers, Michael, Sitwell, Nicholas, Heath, Chantelle, Lonsdale, Jesse O, Bash, Kazuyuki, Miyazaki, Christophe, Flechard, Yannick, Fauvel, Roy Wichink, Kruit, Stefan, Feigenspan, Christian, Brümmer, Frederik, Schrader, Marsailidh M, Twigg, Sarah, Leeson, Yuk S, Tang, Amy C M, Stephens, Christine, Braban, Keith, Vincent, Mario, Meier, Eva, Seitler, Camilla, Geels, Thomas, Ellermann, Agnieszka, Sanocka, Shannon L, Capps
Publikováno v:
Journal of geophysical research. Atmospheres : JGR. 127(9)
We conduct the first 4D-Var inversion of NH
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::65d59c89bea6850a20a22c43bc3696db
https://pubmed.ncbi.nlm.nih.gov/35865809
https://pubmed.ncbi.nlm.nih.gov/35865809
Autor:
Joshua L. Laughner, Jessica L. Neu, David Schimel, Paul O. Wennberg, Kelley Barsanti, Kevin Bowman, Abhishek Chatterjee, Bart Croes, Helen Fitzmaurice, Daven Henze, Jinsol Kim, Eric A. Kort, Zhu Liu, Kazuyuki Miyazaki, Alexander J. Turner, Susan Anenberg, Jeremy Avise, Hansen Cao, David Crisp, Joost de Gouw, Annmarie Eldering, John C. Fyfe, Daniel L. Goldberg, Kevin R. Gurney, Sina Hasheminassab, Francesca Hopkins, Cesunica E. Ivey, Dylan B.A. Jones, Junjie LIu, Nicole S. Lovenduski, Randall V. Martin, Galen A. McKinley, Lesley Ott, Benjamin Poulter, Muye Ru, Stanley P. Sander, Neil Swart, Yuk L. Yung, Zhao-Cheng Zeng
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::664b9bd478efa8c6b4558ecdf0b9c46e
https://doi.org/10.1002/essoar.10506081.2
https://doi.org/10.1002/essoar.10506081.2
Publikováno v:
Atmospheric Environment. 204:22-31
Open burning of crop residues is a strong seasonal source of air pollutants in many parts of China, but the large day-to-day variability of the associated emissions pose a great challenge for air quality forecasts. Here we developed back-propagation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04146f73cdc90f3d89867aad42f5c6d0
https://doi.org/10.1016/j.atmosenv.2019.02.002
https://doi.org/10.1016/j.atmosenv.2019.02.002