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Coordinated Airborne Studies in the Tropics (CAST)

Authors :: Bin Ouyang
Lucy J. Carpenter
G. J. Nott
Plamen Angelov
Robyn Butler
A. Vick
Richard Hyde
Elena Meneguz
Charles Chemel
Hugo Ricketts
John A. Pyle
Jamie K. Minaeian
James Dorsey
Alastair C. Lewis
Neil R. P. Harris
Carl J. Percival
Paul H. Kaye
Martin Gallagher
James D. Lee
M. J. Ashfold
A. R. MacKenzie
M. Le Breton
Johannes Flemming
Michal Filus
Andrew Robinson
Stephane Bauguitte
Stephen J. Andrews
Adam R. Vaughan
Roderic L. Jones
Geraint Vaughan
Paul I. Palmer
Richard Newton
Axel Wellpott
Chris Stopford
Neil Humpage
Alistair J. Manning
Hartmut Boesch
Source :: Harris, N R P, Carpenter, L J, Lee, J D, Vaughan, G, Filus, M T, Jones, R L, Ouyang, B, Pyle, J A, Robinson, A D, Andrews, S J, Lewis, A C, Minaeian, J, Vaughan, A, Dorsey, J R, Gallagher, M W, Le Breton, M, Newton, R, Percival, C J, Ricketts, H M A, Baugitte, S J, Nott, G J, Wellpott, A, Ashfold, M J, Flemming, J, Butler, R, Palmer, P I, Kaye, P H, Stopford, C, Chemel, C, Boesch, H, Humpage, N, Vick, A, Mackenzie, A R, Hyde, R, Angelov, P, Meneguz, E & Manning, A J 2017, ' Co-ordinated Airborne Studies in the Tropics (CAST) ', Bulletin of the American Meteorological Society, vol. 98, no. 1, pp. 145-162 . https://doi.org/10.1175/BAMS-D-14-00290.1, Harris, N R P, Carpenter, L J, Lee, J D, Vaughan, G, Filus, M T, Jones, R L, Ouyang, B, Pyle, J A, Robinson, A D, Andrews, S J, Lewis, A C, Minaeian, J, Vaughan, A, Dorsey, J R, Gallagher, M W, Le Breton, M, Newton, R, Percival, C J, Ricketts, H M A, Bauguitte, S J B, Nott, G J, Wellpott, A, Ashfold, M J, Flemming, J, Butler, R, Palmer, P I, Kaye, P H, Stopford, C, Chemel, C, Boesch, H, Humpage, N, Vick, A, MacKenzie, A R, Hyde, R, Angelov, P, Meneguz, E & Manning, A J 2017, ' Coordinated Airborne Studies in the Tropics (CAST) ', Bulletin of the American Meteorological Society, vol. 98, no. 1, pp. 145-162 . https://doi.org/10.1175/BAMS-D-14-00290.1, Harris, N & Vaughan, G 2017, ' Co-ordinated Airborne Studies in the Tropics (CAST) ' Bulletin of the American Meteorological Society, vol 98, no. 1, pp. 145-162 . DOI: 10.1175/BAMS-D-14-00290.1
Publication Year :: 2017
Publisher :: American Meteorological Society, 2017.
Abstract: The main field activities of the Coordinated Airborne Studies in the Tropics (CAST) campaign took place in the west Pacific during January–February 2014. The field campaign was based in Guam (13.5°N, 144.8°E), using the U.K. Facility for Airborne Atmospheric Measurements (FAAM) BAe-146 atmospheric research aircraft, and was coordinated with the Airborne Tropical Tropopause Experiment (ATTREX) project with an unmanned Global Hawk and the Convective Transport of Active Species in the Tropics (CONTRAST) campaign with a Gulfstream V aircraft. Together, the three aircraft were able to make detailed measurements of atmospheric structure and composition from the ocean surface to 20 km. These measurements are providing new information about the processes influencing halogen and ozone levels in the tropical west Pacific, as well as the importance of trace-gas transport in convection for the upper troposphere and stratosphere. The FAAM aircraft made a total of 25 flights in the region between 1°S and 14°N and 130° and 155°E. It was used to sample at altitudes below 8 km, with much of the time spent in the marine boundary layer. It measured a range of chemical species and sampled extensively within the region of main inflow into the strong west Pacific convection. The CAST team also made ground-based measurements of a number of species (including daily ozonesondes) at the Atmospheric Radiation Measurement Program site on Manus Island, Papua New Guinea (2.1°S, 147.4°E). This article presents an overview of the CAST project, focusing on the design and operation of the west Pacific experiment. It additionally discusses some new developments in CAST, including flights of new instruments on board the Global Hawk in February–March 2015.