Chen, J.M.Leblanc, S.G.Cihlar, J.C.Bicheron, P.Leroy, M.Deering, D.Eck, Thomas2024-04-292024-04-291997-08Chen, J.M., S.G. Leblanc, J.C. Cihlar, P. Bicheron, M. Leroy, D. Deering, and T. Eck. “Studies of BRDF in Conifer and Deciduous Boreal Forests Using the 4-Scale Model and Airborne POLDER and Ground-Based PARABOLA Measurements.” IGARSS’97. 1997 IEEE International Geoscience and Remote Sensing Symposium Proceedings. Remote Sensing - A Scientific Vision for Sustainable Development 1 (August 1997): 165–67 vol.1. https://doi.org/10.1109/IGARSS.1997.615828.https://doi.org/10.1109/IGARSS.1997.615828http://hdl.handle.net/11603/33473IGARSS'97. 1997 IEEE International Geoscience and Remote Sensing Symposium Proceedings. Remote Sensing - A Scientific Vision for Sustainable Development, 03-08 August 1997, SingaporeAn investigation of directional reflectance of boreal forests is conducted using airborne POLDER (1994) and ground-based PARABOLA measurements (1995) and the 4-Scale model (1997). The model simulates well the pronounced hotspots observed by POLDER and the slight bowl shape in the forward scattering direction observed by PARABOLA. The model is also used to demonstrate the importance of branch architecture in the directionality of NDVI calculated from the red and near infrared reflectance.3 pagesen-USThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.Public DomainAtmosphereAtmospheric measurementsAtmospheric modelingGeometrical opticsOptical scatteringOptical surface wavesReflectivityRemote sensingSolid modelingSurface treatmentText