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dc.contributor.authorWalters, Donald L.
dc.contributor.authorBradford, L. William
dc.date1997-10
dc.date.accessioned2014-12-10T19:07:59Z
dc.date.available2014-12-10T19:07:59Z
dc.date.issued1997-10
dc.identifier.urihttp://hdl.handle.net/10945/44123
dc.descriptionApplied Optics, Volume 36, No. 30, pp. 7876-7886 (20 October 1997)en_US
dc.description.abstractWe present a statistical analysis of r0 and u0 measurements collected over the last 2 decades at 18 different sites. Although the site altitudes varied from sea level to 3 km, the major distinguishing feature between average r0 values was the presence or absence of a turbulent, atmospheric boundary layer above the surface. For locations without a strong boundary-layer inversion, the mean coherence length, r0, was 93 6 6 mm and the mean isoplanatic angle, u0, was 9.4 6 0.5 mrad. Where a boundarylayer inversion was present, the corresponding values for r0 and u0 were 53 6 2 mm and 6.5 6 0.5 mrad, respectively.en_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, may not be copyrighted.en_US
dc.titleMeasurements of r0 and θ0: two decades and 18 sitesen_US
dc.contributor.departmentDepartment of Physics


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