Riverine silicon (Si) plays a vital role in governing primary production, water quality, and carbon cycling. Climate and land cover change have altered how dissolved Si (DSi) is processed on land, transported to rivers, and cycled through aquatic ecosystems. The Global Aggregation of Stream Silica (GlASS) database was constructed to assess changes in river Si concentrations and fluxes, their relationship to other solutes, and to evaluate mechanisms driving the availability of Si. GlASS includes concentrations of DSi and 10 other biogenic and geogenic solutes that represent daily to quarterly time steps from 1960 to 2023, daily discharge, and watershed characteristics for nearly 500 rivers spanning 11 climate zones.

The United States Soil Data App (USSDA) provides a graphical interface to over 2 million soil measurements, including biological, chemical, morphological, and physical data, from more than 27,000 profiles across the contiguous U.S. For more information about the dataset, please refer to the following publications: