Whiteface Mountain (WFM) in the Northern Upstate New York has an important history in cloud water chemistry observations. Most of that chemistry research has focused on inorganic ions, pertaining to large scale deposition in the Adirondack Mountains and throughout the country. Clouds and aerosols are tied together and play important roles in climate and atmospheric chemistry, but significant uncertainty remains about aerosol-cloud interactions. Aerosols play an important role in the formation of clouds by acting as condensation nuclei. Clouds, in turn, play an important role in the removal of aerosols by wet deposition. Clouds can also play important roles in the composition of aerosols, allowing for aqueous phase chemistry to occur, thereby changing the aerosol upon subsequent evaporation of cloud droplets. While the inorganic chemistry of clouds and aerosols is relatively well understood, the chemistry of organic constituents, which make up a majority of both fine aerosol and cloud water mass loadings in the modern day, is much more complex and requires further study. 

This poster is a summary of work that has been done in the summer of 2018 to utilize and expand upon a system to monitor cloud water composition at WFM. Our work continues the longterm measurement of inorganic ions dating back to 1994, as well as measurements of total dissolved organic carbon, which began in 2009.  In addition, routine measurement of select organic acids have begun, as these chemical constituents have been shown to make up the largest percentage of any single type of organic molecule found in cloud water. A filtration system was installed to remove microbes in the cloud water that could potentially change the chemical composition over time prior to chemical analysis. Tests of the system and preliminary results from the cloud water collected during 2018 are highlighted.