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Browsing by Author "Crawford, I.A."
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Biogenic cloud nuclei in the central Amazon during the transition from wet to dry season
Whitehead, James D.; Darbyshire, Eoghan; Brito, Joel; Barbosa, Henrique M.J.; Crawford, I.A.; Stern, Rafael; Gallagher, Martin W.; Kaye, Paul; Allan, James D.; Coe, H.; Artaxo, Paulo; McFiggans, G. B. (2016-08-03)The Amazon basin is a vast continental area in which atmospheric composition is relatively unaffected by anthropogenic aerosol particles. Understanding the proper- ties of the natural biogenic aerosol particles over the ... -
Characterisation and source identification of biofluorescent aerosol emissions over winter and summer periods in the United Kingdom
Forde, Elizabeth; Gallagher, Martin W.; Foot, Virginia; Sada-Esteve, Roland; Crawford, I.A.; Kaye, Paul; Stanley, Warren; Topping, David (2019-02-08)Primary biological aerosol particles (PBAPs) are an abundant subset of atmospheric aerosol particles which comprise viruses, bacteria, fungal spores, pollen, and fragments such as plant and animal debris. The abundance and ... -
The effective density of small ice particles obtained from in situ aircraft observations of mid-latitude cirrus
Cotton, Richard; Field, P.R.; Ulanowski, Joseph; Kaye, Paul H.; Hirst, Edwin; Greenaway, Richard; Crawford, I.A.; Crosier, J.; Dorsey, James (2013-10)The effective ice-particle density, parametrized through a mass–dimension relation, is widely used in ice microphysical schemes for weather and climate models. In this study, we use aircraft-based observations in mid-latitude ... -
Helium absorption and emission towards Theta^1 ORI C
Oudmaijer, R.D.; Drew, J.E.; Barlow, M.J.; Crawford, I.A.; Proga, D. (1997)The Hei absorption and emission systems towards Theta^1Ori C, the exciting star of the Orion Nebula, are investigated. To this end, high-resolution near-infrared long-slit spectra centred on the Hei 1.083-μm and Brgamma ...