Ground-based measurement 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.