Complex sentence: As a meteorologist, Hildebrandsson is notable for his researches into the subject of clouds, and in 1880 was requested by the International Meteorological Committee to prepare the "International Cloud Atlas", a work carried out in conjunction with Leon Teisserenc de Bort.
Split into simpler sentences: As a meteorologist, Hildebrandsson is notable for his researches into the subject of clouds. In 1880, he was requested by the International Meteorological Committee to prepare the "International Cloud Atlas", a work carried out in conjunction with Leon Teisserenc de Bort.