Ground‐based measurements of Arctic haze made at Alert, N.W.T., Canada, during the Arctic Gas and Aerosol Sampling Project (AGASP)

Abstract

Ground‐based measurements of Arctic haze were made which are comparable with data obtained aboard the National Oceanographic and Atmospheric Administration (NOAA) P‐3 aircraft during March, 1983. Measurements of particle size distribution, particle ionic speciation, and condensation nuclei concentration were made at Alert, N.W.T., from March 16‐30. Comparison with the long‐term data taken by the Canadian Arctic Air Sampling Network shows that the period is typical of haze maxima in previous years. These data allowed a favorable comparison of the particle size distribution from the aircraft and ground sampler to be made.