HR: 08:50h
AN: AE21A-05    [Abstracts]
TI: Lightning activity and cloud properties of the convective storm system on 3 March 2004 observed during TROCCINOX/TroCCiBras and implications for lightning NOx production
AU: * Fehr, T
EM: Thorsten.Fehr@dlr.de
AF: Institut f\"{u}r Physik der Atmosph\"{a}re, DLR, Oberpfaffenhofen, Wessling, 82234 Germany
AU: Gomes Held, A M
EM: ana@ipmet.unesp.br
AF: Instituto de Pesquisas Meteorol\'{o}gicas, UNESP, CX Postal, 281, Bauru, 17001-970 Brazil
AU: H\"{o}ller, H
EM: Hartmut.Hoeller@dlr.de
AF: Institut f\"{u}r Physik der Atmosph\"{a}re, DLR, Oberpfaffenhofen, Wessling, 82234 Germany
AU: Schlager, H
EM: Hans.Schlager@dlr.de
AF: Institut f\"{u}r Physik der Atmosph\"{a}re, DLR, Oberpfaffenhofen, Wessling, 82234 Germany
AU: Pinto, O
EM: osmar@dge.inpe.br
AF: Grupo de Eletricidade Atmosf\'{e}rica (ELAT), Av. Astronautas 1758, S.J. Campos, 12240-540 Brazil
AU: Kawasaki, Z
EM: zen@comm.eng.osaka-u.ac.jp
AF: Department of Communications Engineering, Osaka University, Yamada-Oka 2-1, Suita, Osaka, 565-0871 Japan
AU: Huntrieser, H
EM: Heidi.Huntrieser@dlr.de
AF: Institut f\"{u}r Physik der Atmosph\"{a}re, DLR, Oberpfaffenhofen, Wessling, 82234 Germany
AU: Gatzen, C
EM: christoph.gatzen@dlr.de
AF: Institut f\"{u}r Physik der Atmosph\"{a}re, DLR, Oberpfaffenhofen, Wessling, 82234 Germany
AU: Held, G
EM: gerhard@ipmet.unesp.br
AF: Instituto de Pesquisas Meteorol\'{o}gicas, UNESP, CX Postal, 281, Bauru, 17001-970 Brazil
AU: Schumann, U
EM: Ulrich.Schumann@dlr.de
AF: Institut f\"{u}r Physik der Atmosph\"{a}re, DLR, Oberpfaffenhofen, Wessling, 82234 Germany
AB: In February and March 2004 the first field experiment of the joint EU-Brazilian TROCCINOX/TroCCiBras projects was performed in south-eastern Brazil. One of the major targets of these projects is to reduce the uncertainties in the estimates of the global production of lightning-induced nitrogen oxides by investigating tropical convection. The experimental strategy of TROCCINOX included cloud-scale observations with the DLR research aircraft "Falcon", measuring trace gases (NO$_{x}$, NO$_{y}$, CO and O$_{3}$), meteorological parameters, as well as aerosol and water vapor profiles. In addition, ground-based observations from two Doppler radars were provided by IPMet/UNESP, almost covering the complete Brazilian State of Sa\~{o} Paulo. Measurements from a VLF/LF lightning location network covering Southern and South-Eastern Brazil were assembled by ELAT/INPE. The Osaka University Lightning Research Group installed a regional VHF lightning mapping system, allowing the co-located analysis with radar measurements. Satellite observations (e.g., TRMM, MSG) provide further information on various parameters. In addition, cloud-scale simulations are performed to complement the experimental results. In the afternoon of 3 March 2004 wide spread tropical convection developed in the Bauru area and the aircraft was measuring in and around the thunderstorm anvils. These observations are complemented by the measurements of the Bauru radar and the lightning detection systems. Cloud scale simulations in combination with the radar and satellite observations are used to estimate the transport properties in the observed storms. The combined results are used to estimate the NO$_{x}$ production and transport in the observed cells.
DE: 3324 Lightning
DE: 3314 Convective processes
DE: 0320 Cloud physics and chemistry
DE: 0368 Troposphere--constituent transport and chemistry
SC: Atmospheric and Space Electricity [AE]
MN: 2004 AGU Fall Meeting