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List of Abstracts 106To optimize vegetation monitoring with DOAS we produce spectrally resolved reference spectra fromdifferent vegetation types using our own instrumentation. We analyze the effect of different Pigments onhigh-frequency-structures of the DOAS Retrieval. Applying these results we investigate how well we candistinguish vegetation types from space.Plenary 2.1 ID:4362 INVITED 19:00From Robert Boyle to IGAC: a history of the study of atmospheric composition and chemistryIan GalballyCSIRO Marine and Atmospheric ResearchContact: ian.galbally@csiro.auModern studies of atmospheric composition and chemistry commenced when air was no longer seen as anelement but as a gaseous mixture being made up of at least two kinds of gases (John Mayow 1645–1679) or“various materials” Robert Boyle (1627–1691). In the 18th century the investigation of atmosphericcomposition was among the forefront of physical science. Eminent scientists identified nitrogen, oxygen,carbon dioxide, hydrogen and other atmospheric gases. In the 19th century themes emerged including: •Carbon dioxide, oxygen and the carbon cycle • The composition of rainfall and the cycles of nitrogen,sulphur, etc. • Ozone and other oxidants in surface air • Ozone in the upper atmosphere • Air hygene (airpollution) • Airborne particulate matter (aerosol) Study of the organic chemistry of the atmospherecommenced mid 20th century. The drivers of this research have varied widely including: the desire forfundamental knowledge of Cavendish in the late 18th century and Schönbein and Ramsay in the 19thcentury, the need for understanding of the nutrition of plants and the production of food by de Saussure,Liebig and others in the 19th century, the coupling of urban air pollution and sanitary concerns by Smith inthe 19th century and Haagen-Smit in the 20th century, the desire to probe the then inaccessible upperatmosphere by Dobson and Chapman and concerns about continental scale and global pollution byCallendar, Oden, Johnston, Crutzen, Rowland and Molina in the 20th century. Over the same period, thestudy of atmospheric composition and chemistry passed from mainstream physical research in the 18thcentury to an adjunct of meteorology in the 19th and early 20th century, to a recognised field of chemistry inthe late 20th century, to, today in the 21st century, a core component of Earth systems science, themultidisciplinary study of the Earth in all its facets.iCACGP-IGAC 2010 12 July, 2010