Coordinated airborne studies in the tropics (CAST)

Research output: Contribution to journalArticlepeer-review

Authors

  • N. R P Harris
  • N. R P Harris
  • L. J. Carpenter
  • J. D. Lee
  • G. Vaughan
  • M. T. Filus
  • R. L. Jones
  • B. Ouyang
  • J. A. Pyle
  • A. D. Robinson
  • S. J. Andrews
  • A. C. Lewis
  • A. C. Lewis
  • J. Minaeian
  • A. Vaughan
  • J. R. Dorsey
  • M. W. Gallagher
  • M. Le Breton
  • R. Newton
  • C. J. Percival
  • H. M A Ricketts
  • S. J B Bauguitte
  • G. J. Nott
  • A. Wellpott
  • M. J. Ashfold
  • J. Flemming
  • R. Butler
  • P. I. Palmer
  • P. H. Kaye
  • C. Stopford
  • C. Chemel
  • H. Boesch
  • N. Humpage
  • A. Vick
  • R. Hyde
  • P. Angelov
  • E. Meneguz
  • A. J. Manning

External organisations

  • University of Cambridge
  • University of York
  • National Centre for Atmospheric Science
  • University of Manchester
  • Facility for Airborne Atmospheric Measurements
  • University of Nottingham Malaysia Campus
  • European Centre for Medium-Range Weather Forecasts
  • EDINBURGH UNIVERSITY
  • University of Hertfordshire
  • University of Leicester
  • UK ASTRONOMY TECHNOLOGY CENTRE
  • Lancaster University
  • Met Office
  • Cranfield University

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.

Details

Original languageEnglish
Pages (from-to)145-162
Number of pages18
JournalBulletin of the American Meteorological Society
Volume98
Issue number1
Publication statusPublished - 1 Jan 2017