A detailed description of the goals of the WGs are given on the individual WG pages. The future of unmanned aerial systems (UAS) in atmospheric research was decided to be discussed in each WG.
Regarding the future of UAS, reducing further the size of UAS will lead to new challenges as it requires new technologies in the fields of propulsion, fuel, sensors and flight control. It is well known that a lot of traditional technologies which form the basis of state of the art air vehicles will not be available on the decimetre nor on the insect size scale. Micro Electro-Mechanical Systems (MEMS) is a promising technology enabling the size reduction of flight control and sensor components. The WGs will therefore analyse which sensors and flight control components may be considerably reduced in size using MEMS and reveal limits of actual state of the art technologies. They will compile a list of technologies and methods which are able to overcome theses limits, e.g. temperature sensors inspired by biology. There will also be new challenges regarding the aerodynamics and reduced size will require and lead to new data acquisition and sensor concepts. For investigations of turbulence phenomena, e.g. a micro size UAS might not have a sensor onboard, instead it is a sensor itself, as turbulence will strongly effect the track and acceleration might be a measure for turbulence.
Meteorological long time investigations are desirable but actual UAS lack of suitable operation times due to actual propulsion and fuel technology. Think tank meetings will look for technologies to broaden the known operation scenarios.