The 6-station LINET (Lightning Detection Network) of DLR is operated during field campaigns. During 2005 the network has been installed in 3 different areas of the globe:
during TROCCINOX-2 in S-America in the Bauru area, Sao Paulo State, Brazil during Jan and Feb 05
in a high density network during June-August 05 in the Munich area, S-Germany around the DLR-POLDIRAD site at Oberpfaffenhofen
in the Darwin area in Northern Australia for SCOUT-O3 and TWP-ICE from Nov 05 - Feb 06
One of the objectives of TROCCINOX is to investigate the production of NOx by lightning (LNOx) in tropical storms. Knowledge of lightning activity is crucial for parameterization of LNOx in models on the global and on the regional scale. Airborne measurements by the DLR-Falcon, the Russian Geophysica and the Brazilian INPE-Bandeirante are used to assess the validity of the model calculations. LINET measurements in Jan and Feb 05 did provide a unique data set of lightning in the Brazilian storms of tropical and sub-tropical characteristcs happening in the Sao Paulo area and the surrounding states.
In co-operation with the IPMET (Instituto de Pesquisas Meteorológicas) of UNESP, LINET was installed around the Bauru radar during TROCCINOX-2. The stations were set up at Bauru, Marilia, Ourinhos, Botocatu, Aracatuba and Novo Horizonte. Most of the stations had online connections to the central station in Bauru. The network was operative from 20 Jan - 27 Feb 2005.
During June-August 2005 LINET was installed in the Munich area around the DLR POLDIRAD radar site in Oberpfaffenhofen. Thus the existing LMU network was completed to a high density network of very short base lines. Thereby two objectives were followed:
the dense network allowed for an investigation of the spectral distribution of the stroke intensity towards its lower end, i.e. to look at the distribution of the weakest signals emitted in the VLF range from lightning
a comparison with the polarimetric Doppler radar data revealed insights into the nature of the lightning occurrence with respect to the microphysical and dynamical processes in thunderstorms
Tropical Convection over the Maritime Continent area is investigated during a series of campaigns based in Darwin/NT-Australia during Nov 05 - Feb 06. The EU-sponsered SCOUT-O3 tropical campaign
TWP-ICE (Tropical Warm Pool - International Cloud Experiment) aims to investigate the wet phase of the Australian monsoon.
LINET has been installed in the Darwin area during Nov 05. The 6 stations are operated in collaboration with the Australian Bureau of Meteorology (BoM). The sites are located at Darwin, Garden Point (Pirlangimpi on Melville Island), Cape Don, Point Stuart, Mount Bundy (Adelaide River) and Dundee Beach. Online connections of the stations enable real time display of the data.
During AMMA the West African Monsoon is investigated in a series of observing periods. The intense special observing periods (SOPs) are scheduled for the 2006 wet season. The deployment of LINET is planned in co-ordination with the French Ronsard polarimetric Doppler radar in Benin.