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- Title
Condensation nuclei data off the west coast of New Zealand.
- Authors
Bromley, A. M.; Gray, S. A.
- Abstract
From 2005 to 2013, air sampling across the SW Pacific between Nelson, New Zealand and Osaka, Japan was undertaken by New Zealand's National Institute of Water and Atmospheric Research (NIWA) from MV Transfuture5, a 60,000 tonne bulk carrier owned and operated by Toyofuji Shipping Company. An average of two sampling voyages a year were carried out; on eight of these voyages aerosol sampling instrumentation was available to take on the ship. Condensation nuclei (CN) were measured using a TSI 3010 condensation particle counter (CPC). The aerosol data collected from 30°S through to Osaka have been analysed and the results previously published (Bromley et al, 2018). This paper discusses the data collected during the earlier section of the voyages from Port Nelson (41.35°S to 30°S). Sudden large increases in CN concentrations were detected on several voyages, in particular when the wind pattern was off the North Island of New Zealand, or from the Australian east coast. Back trajectories were compiled to examine possible sources of the enhanced CN concentrations, which included human activities, oil and gas commercial industrial activities and volcanic eruptions. Advection of aerosols into the coastal areas will cause enhanced signatures in the size distribution, composition and optical depths and can strongly influence the radiative coupling between ocean and atmosphere by scattering and absorbing solar radiation.
- Subjects
NEW Zealand; OSAKA (Japan); AEROSOL sampling; CONDENSATION; INDUSTRIAL gases; AIR sampling; SOLAR radiation; VOLCANIC eruptions; COASTS
- Publication
Weather & Climate (01115499), 2024, Vol 43, Issue 1, p4
- ISSN
0111-5499
- Publication type
Article