Complex sentence: While being the director of the "Fabra Observatory" represented the Meteorological Service of Catalonia at the international meetings of the Conference of Directors of Meteorological Services, being very appreciated for the work he carried out and gaining a high international prestige.
Split into simpler sentences: While being the director of the "Fabra Observatory," he represented the Meteorological Service of Catalonia at the international meetings of the Conference of Directors of Meteorological Services. He was very appreciated for the work he carried out and gained high international prestige.