Zobrazeno 1 - 10
of 397
pro vyhledávání: '"C. Hogrefe"'
Autor:
H. Simon, C. Hogrefe, A. Whitehill, K. M. Foley, J. Liljegren, N. Possiel, B. Wells, B. H. Henderson, L. C. Valin, G. Tonnesen, K. W. Appel, S. Koplitz
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 1855-1871 (2024)
Past work has shown that traffic patterns in the USA and resulting NOx emissions vary by day of week, with NOx emissions typically being higher on weekdays than weekends. This pattern of emissions leads to different levels of ozone on weekends versus
Externí odkaz:
https://doaj.org/article/8dbb5539221f49e49b3796b654e0118e
Autor:
O. E. Clifton, D. Schwede, C. Hogrefe, J. O. Bash, S. Bland, P. Cheung, M. Coyle, L. Emberson, J. Flemming, E. Fredj, S. Galmarini, L. Ganzeveld, O. Gazetas, I. Goded, C. D. Holmes, L. Horváth, V. Huijnen, Q. Li, P. A. Makar, I. Mammarella, G. Manca, J. W. Munger, J. L. Pérez-Camanyo, J. Pleim, L. Ran, R. San Jose, S. J. Silva, R. Staebler, S. Sun, A. P. K. Tai, E. Tas, T. Vesala, T. Weidinger, Z. Wu, L. Zhang
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 9911-9961 (2023)
A primary sink of air pollutants and their precursors is dry deposition. Dry deposition estimates differ across chemical transport models, yet an understanding of the model spread is incomplete. Here, we introduce Activity 2 of the Air Quality Model
Externí odkaz:
https://doaj.org/article/1607157f596e4462bd8b6c369e208040
Autor:
C. Hogrefe, J. O. Bash, J. E. Pleim, D. B. Schwede, R. C. Gilliam, K. M. Foley, K. W. Appel, R. Mathur
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 8119-8147 (2023)
The fourth phase of the Air Quality Model Evaluation International Initiative (AQMEII4) is conducting a diagnostic intercomparison and evaluation of deposition simulated by regional-scale air quality models over North America and Europe. In this stud
Externí odkaz:
https://doaj.org/article/402b219ea6b24ebfab9347dedc69389e
Autor:
Q. Shu, S. L. Napelenok, W. T. Hutzell, K. R. Baker, B. H. Henderson, B. N. Murphy, C. Hogrefe
Publikováno v:
Geoscientific Model Development, Vol 16, Pp 2303-2322 (2023)
The Integrated Source Apportionment Method (ISAM) has been revised in the Community Multiscale Air Quality (CMAQ) model. This work updates ISAM to maximize its flexibility, particularly for ozone (O3) modeling, by providing multiple attribution optio
Externí odkaz:
https://doaj.org/article/81458cdcab8d41848126f5febb7b7ab5
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 12749-12767 (2022)
Atmospheric deposition of nitrogen (N) and sulfur (S) compounds from human activity has greatly declined in the United States (US) over the past several decades in response to emission controls set by the Clean Air Act. While many observational studi
Externí odkaz:
https://doaj.org/article/e0ac202ec8c54cd5936d4adc6b126132
Autor:
S. Galmarini, P. Makar, O. E. Clifton, C. Hogrefe, J. O. Bash, R. Bellasio, R. Bianconi, J. Bieser, T. Butler, J. Ducker, J. Flemming, A. Hodzic, C. D. Holmes, I. Kioutsioukis, R. Kranenburg, A. Lupascu, J. L. Perez-Camanyo, J. Pleim, Y.-H. Ryu, R. San Jose, D. Schwede, S. Silva, R. Wolke
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 15663-15697 (2021)
We present in this technical note the research protocol for phase 4 of the Air Quality Model Evaluation International Initiative (AQMEII4). This research initiative is divided into two activities, collectively having three goals: (i) to define the cu
Externí odkaz:
https://doaj.org/article/2dc88bb0c54648b9a8834688d2b523b4
Publikováno v:
Geoscientific Model Development, Vol 14, Pp 5751-5768 (2021)
The state-of-the-science Community Multiscale Air Quality (CMAQ) Modeling System has recently been extended for hemispheric-scale modeling applications (referred to as H-CMAQ). In this study, satellite-constrained estimation of the degassing SO2 emis
Externí odkaz:
https://doaj.org/article/1d04961ff7e4467691ce38a2cc39d4dd
Autor:
K. W. Appel, J. O. Bash, K. M. Fahey, K. M. Foley, R. C. Gilliam, C. Hogrefe, W. T. Hutzell, D. Kang, R. Mathur, B. N. Murphy, S. L. Napelenok, C. G. Nolte, J. E. Pleim, G. A. Pouliot, H. O. T. Pye, L. Ran, S. J. Roselle, G. Sarwar, D. B. Schwede, F. I. Sidi, T. L. Spero, D. C. Wong
Publikováno v:
Geoscientific Model Development, Vol 14, Pp 2867-2897 (2021)
The Community Multiscale Air Quality (CMAQ) model version 5.3 (CMAQ53), released to the public in August 2019 and followed by version 5.3.1 (CMAQ531) in December 2019, contains numerous science updates, enhanced functionality, and improved computatio
Externí odkaz:
https://doaj.org/article/5a3fc060e3d3443fbd15ccce31c3273e
Evaluating trends and seasonality in modeled PM2.5 concentrations using empirical mode decomposition
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 13801-13815 (2020)
Regional-scale air quality models are being used for studying the sources, composition, transport, transformation, and deposition of fine particulate matter (PM2.5). The availability of decadal air quality simulations provides a unique opportunity to
Externí odkaz:
https://doaj.org/article/a6b4f17f254043d290846348aca9305e
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 3373-3396 (2020)
Stratospheric intrusion and trans-Pacific transport have been recognized as a potential source of tropospheric ozone over the US. The state-of-the-science Community Multiscale Air Quality (CMAQ) modeling system has recently been extended for hemisphe
Externí odkaz:
https://doaj.org/article/1b9ab8c16cfa4ee19be82db8d1061152