HCHO column is dominated by wildfires in Alaska summer fire seasons.

Wildfire is the major source of air pollution in Alaska summer fire seasons. We present an observation-based formula to estimate surface PM2.5 from satellite AOD.

HCHO diurnal cycle is driven by photochemical production and loss.

Tianlang Zhao, a PhD candidate at University of Alaska Fairbanks, studying the fate and transport of air pollutants in lower troposphere, using high resolution chemical transport model (CTM), satellite and ground-based spectrometer network.