Zobrazeno 1 - 10
of 121
pro vyhledávání: '"D. Toom"'
Autor:
W. R. Leaitch, L. M. Russell, J. Liu, F. Kolonjari, D. Toom, L. Huang, S. Sharma, A. Chivulescu, D. Veber, W. Zhang
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 3269-3287 (2018)
The first multi-year contributions from organic functional groups to the Arctic submicron aerosol are documented using 126 weekly-integrated samples collected from April 2012 to October 2014 at the Alert Observatory (82.45° N, 62.51° W). Results
Externí odkaz:
https://doaj.org/article/3924ab8d99fa476cac429528608187b8
Autor:
K. M. Macdonald, S. Sharma, D. Toom, A. Chivulescu, A. Platt, M. Elsasser, L. Huang, R. Leaitch, N. Chellman, J. R. McConnell, H. Bozem, D. Kunkel, Y. D. Lei, C.-H. Jeong, J. P. D. Abbatt, G. J. Evans
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 3485-3503 (2018)
Long-range transport of aerosol from lower latitudes to the high Arctic may be a significant contributor to climate forcing in the Arctic. To identify the sources of key contaminants entering the Canadian High Arctic an intensive campaign of snow
Externí odkaz:
https://doaj.org/article/088afceacb0542b3818aa950d44d13c7
Autor:
K. M. Macdonald, S. Sharma, D. Toom, A. Chivulescu, S. Hanna, A. K. Bertram, A. Platt, M. Elsasser, L. Huang, D. Tarasick, N. Chellman, J. R. McConnell, H. Bozem, D. Kunkel, Y. D. Lei, G. J. Evans, J. P. D. Abbatt
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Iss 9, Pp 5775-5788 (2017)
Rapidly rising temperatures and loss of snow and ice cover have demonstrated the unique vulnerability of the high Arctic to climate change. There are major uncertainties in modelling the chemical depositional and scavenging processes of Arctic snow.
Externí odkaz:
https://doaj.org/article/41498726233547fea93e21fb605a1e61
Autor:
A. D. Teakles, R. So, B. Ainslie, R. Nissen, C. Schiller, R. Vingarzan, I. McKendry, A. M. Macdonald, D. A. Jaffe, A. K. Bertram, K. B. Strawbridge, W. R. Leaitch, S. Hanna, D. Toom, J. Baik, L. Huang
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Iss 4, Pp 2593-2611 (2017)
Biomass burning emissions emit a significant amount of trace gases and aerosols and can affect atmospheric chemistry and radiative forcing for hundreds or thousands of kilometres downwind. They can also contribute to exceedances of air quality standa
Externí odkaz:
https://doaj.org/article/f7acc6f68f6a41a1aef26ea00528dff1
Autor:
R. H. Mason, M. Si, C. Chou, V. E. Irish, R. Dickie, P. Elizondo, R. Wong, M. Brintnell, M. Elsasser, W. M. Lassar, K. M. Pierce, W. R. Leaitch, A. M. MacDonald, A. Platt, D. Toom-Sauntry, R. Sarda-Estève, C. L. Schiller, K. J. Suski, T. C. J. Hill, J. P. D. Abbatt, J. A. Huffman, P. J. DeMott, A. K. Bertram
Publikováno v:
Atmospheric Chemistry and Physics, Vol 16, Pp 1637-1651 (2016)
Detailed information on the size of ice-nucleating particles (INPs) may be useful in source identification, modeling their transport in the atmosphere to improve climate predictions, and determining how effectively or ineffectively instrumentation
Externí odkaz:
https://doaj.org/article/3fde63e98879417f8294fb8f8e5a6416
Autor:
G. R. Wentworth, J. G. Murphy, B. Croft, R. V. Martin, J. R. Pierce, J.-S. Côté, I. Courchesne, J.-É. Tremblay, J. Gagnon, J. L. Thomas, S. Sharma, D. Toom-Sauntry, A. Chivulescu, M. Levasseur, J. P. D. Abbatt
Publikováno v:
Atmospheric Chemistry and Physics, Vol 16, Pp 1937-1953 (2016)
Continuous hourly measurements of gas-phase ammonia (NH3(g)) were taken from 13 July to 7 August 2014 on a research cruise throughout Baffin Bay and the eastern Canadian Arctic Archipelago. Concentrations ranged from 30 to 650 ng m−3 (40–870 pp
Externí odkaz:
https://doaj.org/article/008a7a065f06430b99cc47d3c58a3fd4
Autor:
R. H. Mason, M. Si, J. Li, C. Chou, R. Dickie, D. Toom-Sauntry, C. Pöhlker, J. D. Yakobi-Hancock, L. A. Ladino, K. Jones, W. R. Leaitch, C. L. Schiller, J. P. D. Abbatt, J. A. Huffman, A. K. Bertram
Publikováno v:
Atmospheric Chemistry and Physics, Vol 15, Iss 21, Pp 12547-12566 (2015)
Information on what aerosol particle types are the major sources of ice nucleating particles (INPs) in the atmosphere is needed for climate predictions. To determine which aerosol particles are the major sources of immersion-mode INPs at a coastal si
Externí odkaz:
https://doaj.org/article/31d268147635417e945570790c203d57
Autor:
J. D. Yakobi-Hancock, L. A. Ladino, A. K. Bertram, J. A. Huffman, K. Jones, W. R. Leaitch, R. H. Mason, C. L. Schiller, D. Toom-Sauntry, J. P. S. Wong, J. P. D. Abbatt
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 22, Pp 12307-12317 (2014)
As one aspect of the NETwork on Climate and Aerosols: addressing key uncertainties in Remote Canadian Environments (NETCARE), measurements of the cloud condensation nucleation properties of 50 and 100 nm aerosol particles were conducted at Ucluelet o
Externí odkaz:
https://doaj.org/article/f1bf3ccb88b64815ab60fa746c1a5778
Autor:
W. R. Leaitch, U. Lohmann, L. M. Russell, T. Garrett, N. C. Shantz, D. Toom-Sauntry, J. W. Strapp, K. L. Hayden, J. Marshall, M. Wolde, D. R. Worsnop, J. T. Jayne
Publikováno v:
Atmospheric Chemistry and Physics, Vol 10, Iss 16, Pp 7669-7684 (2010)
Airborne measurements from two consecutive days, analysed with the aid of an aerosol-adiabatic cloud parcel model, are used to study the effect of carbonaceous aerosol particles on the reflectivity of sunlight by water clouds. The measurements, inclu
Externí odkaz:
https://doaj.org/article/2d1ed94fdd9646caa433e9ea0eb559ed
Autor:
R. E. Schwartz, L. M. Russell, S. J. Sjostedt, A. Vlasenko, J. G. Slowik, J. P. D. Abbatt, A. M. Macdonald, S. M. Li, J. Liggio, D. Toom-Sauntry, W. R. Leaitch
Publikováno v:
Atmospheric Chemistry and Physics, Vol 10, Iss 11, Pp 5075-5088 (2010)
Submicron particles collected at Whistler, British Columbia, at 1020 m a.s.l. during May and June 2008 on Teflon filters were analyzed by Fourier transform infrared (FTIR) and X-ray fluorescence (XRF) techniques for organic functional groups (OFG) an
Externí odkaz:
https://doaj.org/article/20055105d8a64d7d9b5329047cf51162