The Rochester Section of the Optical Society of America is a group of people in the optics industry interested in promoting the knowledge of optics for the local community.
Laser Dissection of Vegetation...
There is More to a Tree Than Meets the Eye
Talk by Dr. Jan van Aardt
Our research group has developed a solid relationship with the National Science Foundation’s (NSF) National Ecological Observatory Network (NEON). NEON has as its main objectives the monitoring of continental scale ecosystems to assess the impact of climate change, invasive species, and land-use/land-cover change on these ecosystems. This will be achieved by collecting relevant (public domain) ecological in situ variables. However, synoptic coverage and scaling ability will be provided by three airborne imaging platforms that arguably contain the world’s leading airborne imaging spectrometer (next-generation AVIRIS) and a waveform light detection and ranging (lidar) laser scanner. Waveform lidar measures the backscattered intensity for a 1064nm laser, as a function of time, with precise geo-location. Waveform lidar sensing allows algorithm specialists to derive information about the ground surface, vegetation structure, and to extract 3D surfaces. Imaging spectroscopy, on the other hand, provides narrow, contiguous wavelength bands in the 400-2500nm spectral region for assessment of vegetation species, stress, and processes. I will focus on our lidar research with NEON, while also alluding to imaging spectroscopy efforts to characterize the structure and condition of vegetation. Not only will we be able to determine what vegetation “feels like” (structure), but these and related efforts will enable us to assess what plants “look like” (composition) and what role (function) they play in ecosystems.
Newsletters from previous months can be found in thenews section.
The Rochester Section is active in the support of optics education in area schools. The Rochester Section developed its Optics Suitcase in 1999. The Optics Suitcase is an innovative, interactive presentation package designed to introduce middle school students to many of the concepts of optics as well as other sciences.
Information on Joining
For information on how to join, please see our new membership form online. We still support both online and traditional postal membership renewal methods. Miscellaneous questions can be answered by our secretary.