Water chemistry data for Green Lakes Valley, 2018

Recently, the link between air warming and stream chemistry fluxes at GLV was evaluated by Crawford et al (2019) that showed strong connection between the sum of average daily temperature at a monthly time step and normalized fluxes of base cations and SO4--. They explored the reasons for this relation evoking several direct and indirect mechanisms and concluded that enhanced sulfide mineral weathering in and around the rock glacier is a result of recent warming-induced changes to minerals weathering. However, on the basis of a pattern recognition analysis of base cations and major anions concentrations we hypothesized that the observed trends in the GLV and probably across the Rocky Mountains region resulted from a combination of several mechanisms rather than warming trend alone. So the main objective of this work is to re-examine the Niwot Ridge LTER long-term data coupled with additional ancillary data sets to ascertain the mechanisms instigating the observed trends.