B43H-0650
Measurements of Solar Induced Chlorophyll Fluorescence at 685 nm by Airborne Plant Fluorescence Sensor (APFS)
Thursday, 17 December 2015
Poster Hall (Moscone South)
Frank Morgan1, Jeng-Hwa Yee1, John Boldt1, William B Cook2 and Lawrence A Corp3, (1)Applied Physics Laboratory Johns Hopkins, Laurel, MD, United States, (2)NASA Goddard SFC, Greenbelt, MD, United States, (3)Sigma Space Corporation, Lanham, MD, United States
Abstract:
Solar-induced chlorophyll fluorescence (ChlF) by terrestrial vegetation is linked closely to photosynthetic efficiency that can be exploited to monitor the plant health status and to assess the terrestrial carbon budget from space. The weak, broad continuum ChlF signal can be detected from the fill-in of strong O2 absorption lines or solar Fraunhofer lines in the reflected spectral radiation. The Johns Hopkins University, Applied Physics Laboratory (JHU/APL) Airborne Plant Fluorescence Sensor (APFS) is a triple etalon Fabry-Perot interferometer designed and optimized specifically for the ChlF sensing from an airborne platform using this line fill-in technique. In this paper, we will present the results of APFS ChlF measurements obtained from a NASA Langley King Air during two airborne campaigns (12/12 in 2014 and 5/20 in 2015) over various land, river, and vegetated targets in Virginia during stressed and growth seasons.
