Zobrazeno 1 - 10
of 1 605
pro vyhledávání: '"P. A. Makar"'
Publikováno v:
Geoscientific Model Development, Vol 17, Pp 2197-2219 (2024)
We describe a new Fortran computer program to solve the system of equations for the NH4+–Na+–Ca2+–K+–Mg2+–SO42-–NO3-–Cl−–H2O system, based on the algorithms of ISORROPIA II. Specifically, the code solves the system of equations desc
Externí odkaz:
https://doaj.org/article/d7813ac425e74500a7860fd435bd6615
Publikováno v:
Geoscientific Model Development, Vol 17, Pp 685-707 (2024)
Below-cloud scavenging (BCS) is the process of aerosol removal from the atmosphere between cloud base and the ground by precipitation (e.g., rain or snow), and affects aerosol number or mass concentrations, size distribution, and lifetime. An accurat
Externí odkaz:
https://doaj.org/article/e3a78b0a60634dd6a90a5a7a4515c3d2
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 13647-13664 (2023)
Measurements of ozone were made using an instrumented tower and a tethersonde located in a forested region surrounded by oil sands production facilities in the Athabasca Oil Sands Region (AOSR). Our observations and modeling show that the concentrati
Externí odkaz:
https://doaj.org/article/b86acde8fd4640e5b68d5da10cce21f4
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:
M. Gordon, D. Blanchard, T. Jiang, P. A. Makar, R. M. Staebler, J. Aherne, C. Mihele, X. Zhang
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 7241-7255 (2023)
The emission of SO2 from the Athabasca Oil Sands Region (AOSR) has been shown to impact the surrounding forest area. Recent studies using aircraft-based measurements have demonstrated that deposition of SO2 to the forest is at a rate many times highe
Externí odkaz:
https://doaj.org/article/cbb1aacfdd534afabce5199dd58673ad
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 4361-4372 (2023)
Measurements of size-resolved aerosol concentration and fluxes were made in a forest in the Athabasca Oil Sands Region (AOSR) of Alberta, Canada, in August 2021 with the aim of investigating (a) particle size distributions from different sources, (b)
Externí odkaz:
https://doaj.org/article/283ab53c41234e97afd5ae8ad99a1f01
Autor:
M. Majdzadeh, C. A. Stroud, C. Sioris, P. A. Makar, A. Akingunola, C. McLinden, X. Zhao, M. D. Moran, I. Abboud, J. Chen
Publikováno v:
Geoscientific Model Development, Vol 15, Pp 219-249 (2022)
The photolysis module in Environment and Climate Change Canada's online chemical transport model GEM-MACH (GEM: Global Environmental Multi-scale – MACH: Modelling Air quality and Chemistry) was improved to make use of the online size and compositio
Externí odkaz:
https://doaj.org/article/791eb73f912e495d9ecd95d88590c595
Autor:
S. Fathi, M. Gordon, P. A. Makar, A. Akingunola, A. Darlington, J. Liggio, K. Hayden, S.-M. Li
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 15461-15491 (2021)
We investigate the potential for aircraft-based top-down emission rate retrieval over- and under-estimation using a regional chemical transport model, the Global Environmental Multiscale-Modeling Air-Quality and CHemistry (GEM-MACH). In our investiga
Externí odkaz:
https://doaj.org/article/2b12b2554e684293ae863eda9237ad85
Publikováno v:
Geoscientific Model Development, Vol 14, Pp 5093-5105 (2021)
The dry deposition process refers to flux loss of an atmospheric pollutant due to uptake of the pollutant by the Earth's surfaces, including vegetation, underlying soil, and any other surface types. In chemistry transport models (CTMs), the dry depos
Externí odkaz:
https://doaj.org/article/6d2140dc03ca42a69162f4589894ce46
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 12291-12316 (2021)
Theoretical models of the Earth's atmosphere adhere to an underlying concept of flow driven by radiative transfer and the nature of the surface over which the flow is taking place: heat from the sun and/or anthropogenic sources are the sole sources o
Externí odkaz:
https://doaj.org/article/54e0be0ce9d24b76bdf5c7de375c664a