HR: 14:25h
AN: A12D-04    [PDF]
TI: Results from Emerald-2: Measurements in the Cirrus Outflow from Tropical Convection above Darwin
AU: * Whiteway, J A
EM: whiteway@yorku.ca
AF: Department of Earth and Atmospheric Science, York University, 4700 Keele Street, Toronto, ON M3J 1P3 Canada
AU: Choularton, T
AF: Physics Department, UMIST, PO Box 88, Manchester, M6O 1QD United Kingdom
AU: Harries, J
AF: Department of Physics, Imperial College, Prince Consort Rd, London, SW7 2BW United Kingdom
AU: Gallagher, M
AF: Physics Department, UMIST, PO Box 88, Manchester, M6O 1QD United Kingdom
AU: Bower, K
AF: Physics Department, UMIST, PO Box 88, Manchester, M6O 1QD United Kingdom
AU: Busen, R
AF: DLR, Postlach 116,, Oberpfaffenhofen, D 82230 Germany
AU: Connolly, P
AF: Physics Department, UMIST, PO Box 88, Manchester, M6O 1QD United Kingdom
AU: Cook, C
AF: Department of Physics, University of Wales, Penglais Rd, Aberystwyth, Sy23 3BZ United Kingdom
AU: Flynn, M
AF: Physics Department, UMIST, PO Box 88, Manchester, M6O 1QD United Kingdom
AU: Hacker, J
AF: Airborne Research Australia, Parafield Airport,, Adelaide, 5001 Australia
AU: Murray, J
AF: Department of Physics, Imperial College, Prince Consort Rd, London, SW7 2BW United Kingdom
AU: Straine, J
AF: Department of Physics, Imperial College, Prince Consort Rd, London, SW7 2BW United Kingdom
AB: The EMERALD-2 campaign was conducted from Darwin Australia in November 2002 to study the cirrus outflow from tropical convection. This involved two aircraft from which in-situ sampling and remote sensing were applied. One aircraft, called the Egrett, flew to heights of 15 km while carrying instruments for measuring cloud particles, humidity, temperature, ozone, turbulence, and far-IR radiative spectra. Another aircraft, the King-Air, flew directly below the Egrett while carrying an upward viewing polarization lidar. The airborne lidar mapped the structure of the outflow cloud while, simultaneously, the Egrett sampled inside the same volume of cloud. Thirteen separate flights were focused on a major convective event (called Hector) that occurs nearly every day during the pre-monsoon period (November) over the Tiwi Islands. Measurements will be presented that show the variation in crystal properties, dynamics, water vapour and ozone within and around the convective outflow in the upper troposphere. Comparisons will be made with the properties of frontal cirrus clouds, as measured in the EMERALD-1 campaign.
DE: 0320 Cloud physics and chemistry
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting