ARM Data Center: A World’s Worth of Atmospheric Data

The ARM Data Center collects and manages global observational and experimental data amassed by the Department of Energy (DOE) Office of Science’s Atmospheric Radiation Measurement user facility. The ARM Data Center gathers and curates some 50 terabytes of data per month from more than 460 instruments located in climate-critical locations worldwide. The data center processes and packages the information from these instruments into over 11,000 distinct data products. For the past 30 years, ARM has been making this data accessible to scientists around the world.

A Day and Night Difference: Molecular Composition of Aerosols Differs from Day to Night

Aerosols particles in the atmosphere are an important factor in the Earth’s climate, but researchers lack information on these aerosols’ molecular composition, especially for aerosols during the day and night above agricultural fields. In this research, scientists examined secondary organic aerosols over agricultural fields in the Southern Great Plains in Oklahoma. They found that the aerosols’ composition and structure differ from day to night and that some aerosols are ultimately from urban sources.