Zobrazeno 1 - 10
of 41
pro vyhledávání: '"W. C. Malm"'
Autor:
J. R. Ouimette, W. C. Malm, B. A. Schichtel, P. J. Sheridan, E. Andrews, J. A. Ogren, W. P. Arnott
Publikováno v:
Atmospheric Measurement Techniques, Vol 15, Pp 655-676 (2022)
The Plantower PMS5003 sensors (PMS) used in the PurpleAir monitor PA-II-SD configuration (PA-PMS) are equivalent to cell-reciprocal nephelometers using a 657 nm perpendicularly polarized light source that integrates light scattering from 18 to 166∘
Externí odkaz:
https://doaj.org/article/769c8c4502734ca99d2f884dbc0efccd
Autor:
R. Zhang, T. M. Thompson, M. G. Barna, J. L. Hand, J. A. McMurray, M. D. Bell, W. C. Malm, B. A. Schichtel
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 12991-13011 (2018)
Research has shown that excess reactive nitrogen (Nr) deposition in the Greater Yellowstone Area (GYA) of the United States has passed critical load (CL) thresholds and is adversely affecting sensitive ecosystems in this area. To better understand
Externí odkaz:
https://doaj.org/article/38d6fe73a6154e1ab3951badc3fb6f2f
Autor:
A. J. Prenni, D. E. Day, A. R. Evanoski-Cole, B. C. Sive, A. Hecobian, Y. Zhou, K. A. Gebhart, J. L. Hand, A. P. Sullivan, Y. Li, M. I. Schurman, Y. Desyaterik, W. C. Malm, J. L. Collett Jr., B. A. Schichtel
Publikováno v:
Atmospheric Chemistry and Physics, Vol 16, Pp 1401-1416 (2016)
The Bakken formation contains billions of barrels of oil and gas trapped in rock and shale. Horizontal drilling and hydraulic fracturing methods have allowed for extraction of these resources, leading to exponential growth of oil production in the
Externí odkaz:
https://doaj.org/article/30de88dbcabf44d7839d3f2cd965eab1
Autor:
M. Collaud Coen, E. Andrews, A. Asmi, U. Baltensperger, N. Bukowiecki, D. Day, M. Fiebig, A. M. Fjaeraa, H. Flentje, A. Hyvärinen, A. Jefferson, S. G. Jennings, G. Kouvarakis, H. Lihavainen, C. Lund Myhre, W. C. Malm, N. Mihapopoulos, J. V. Molenar, C. O'Dowd, J. A. Ogren, B. A. Schichtel, P. Sheridan, A. Virkkula, E. Weingartner, R. Weller, P. Laj
Publikováno v:
Atmospheric Chemistry and Physics, Vol 13, Iss 2, Pp 869-894 (2013)
Currently many ground-based atmospheric stations include in-situ measurements of aerosol physical and optical properties, resulting in more than 20 long-term (> 10 yr) aerosol measurement sites in the Northern Hemisphere and Antarctica. Most of these
Externí odkaz:
https://doaj.org/article/b19c4ada0edb40a581d2bd8b8c6f5c72
Publikováno v:
Atmospheric Chemistry and Physics, Vol 12, Iss 21, Pp 10353-10365 (2012)
We examined particulate sulfate ion concentrations across the United States from the early 1990s through 2010 using remote/rural data from the Interagency Monitoring of Protected Visual Environments (IMPROVE) network and from early 2000 through 2010
Externí odkaz:
https://doaj.org/article/40d638938f414bde99bf50ccd43131b4
Autor:
D. M. Murphy, J. C. Chow, E. M. Leibensperger, W. C. Malm, M. Pitchford, B. A. Schichtel, J. G. Watson, W. H. White
Publikováno v:
Atmospheric Chemistry and Physics, Vol 11, Iss 10, Pp 4679-4686 (2011)
Observations at national parks and other remote sites show that average elemental carbon and fine particle mass concentrations in the United States both decreased by over 25 % between 1990 and 2004. Percentage decreases in elemental carbon were much
Externí odkaz:
https://doaj.org/article/bed7bac2704e463e832a1da53c010f26
Publikováno v:
Atmospheric Chemistry and Physics, Vol 11, Iss 6, Pp 2933-2949 (2011)
Data from the Interagency Monitoring of Protected Visual Environments (IMPROVE) network are used to estimate organic mass to organic carbon (OM/OC) ratios across the United States by extending previously published multiple regression techniques. Our
Externí odkaz:
https://doaj.org/article/bbf4aeb8318e4021be12c67849ac0924
Autor:
L. A. Mack, E. J. T. Levin, S. M. Kreidenweis, D. Obrist, H. Moosmüller, K. A. Lewis, W. P. Arnott, G. R. McMeeking, A. P. Sullivan, C. E. Wold, W.-M. Hao, J. L. Collett Jr., W. C. Malm
Publikováno v:
Atmospheric Chemistry and Physics, Vol 10, Iss 18, Pp 9017-9026 (2010)
A series of laboratory experiments at the Fire Laboratory at Missoula (FLAME) investigated chemical, physical, and optical properties of fresh smoke samples from combustion of wildland fuels that are burned annually in the western and southeastern US
Externí odkaz:
https://doaj.org/article/e5e49f3d0e254c5f86f6d97085f35361
Autor:
J. L. Hand, D. E. Day, G. M. McMeeking, E. J. T. Levin, C. M. Carrico, S. M. Kreidenweis, W. C. Malm, A. Laskin, Y. Desyaterik
Publikováno v:
Atmospheric Chemistry and Physics, Vol 10, Iss 13, Pp 6179-6194 (2010)
During the 2006 FLAME study (Fire Laboratory at Missoula Experiment), laboratory burns of biomass fuels were performed to investigate the physico-chemical, optical, and hygroscopic properties of fresh biomass smoke. As part of the experiment, two nep
Externí odkaz:
https://doaj.org/article/3d8f303257e74792a3787eba8e8afd12
Autor:
C. M. Carrico, M. D. Petters, S. M. Kreidenweis, A. P. Sullivan, G. R. McMeeking, E. J. T. Levin, G. Engling, W. C. Malm, J. L. Collett Jr.
Publikováno v:
Atmospheric Chemistry and Physics, Vol 10, Iss 11, Pp 5165-5178 (2010)
As part of the Fire Lab at Missoula Experiments (FLAME) in 2006–2007, we examined hygroscopic properties of particles emitted from open combustion of 33 select biomass fuels. Measurements of humidification growth factors for subsaturated water rela
Externí odkaz:
https://doaj.org/article/d0d57adb543f4b3299a775e449e1efa5