Skip to content

Horizontal variability of aerosol optical depth observed during the ARCTAS airborne experiment

by Y. Shinozuka, J. Redemann
Atmospheric Chemistry and Physics ()
Get full text at journal


We present statistics on the horizontal variability of aerosol optical depth (AOD) directly measured from the NASA P-3 aircraft. Our measurements during two contrasting phases (in Alaska and Canada) of the ARCTAS mission arguably constrain the variability in most aerosol environments common over the globe. In the Canada phase, which features local emissions, 499 nm AOD has a median relative standard deviation (stdrel,med) of 19% and 9% and an autocorrelation (r) of 0.37 and 0.71 over 20 km and 6 km horizontal segments, respectively. In the Alaska phase, which features long-range transport, the variability is considerably lower (stdrel,med =3 %, r =0.92 even over 35.2 km). Compared to the magnitude of AOD, its wavelength dependence varies less in the Canada phase, more in the Alaska phase. We translate these findings from straight-line flight tracks into grid boxes and points, to help interpretation and design of satellite remote sensing, suborbital observations and transport modeling.

Cite this document (BETA)

Readership Statistics

22 Readers on Mendeley
by Discipline
73% Earth and Planetary Sciences
18% Environmental Science
5% Physics and Astronomy
by Academic Status
41% Researcher
23% Student > Ph. D. Student
9% Student > Master
by Country
5% Germany
5% United Kingdom


Sign up today - FREE

Mendeley saves you time finding and organizing research. Learn more

  • All your research in one place
  • Add and import papers easily
  • Access it anywhere, anytime

Start using Mendeley in seconds!

Sign up & Download

Already have an account? Sign in