Remote Sensing to Estimate Ecosystem GEE using Chlorophyll Level fAPAR (fAPARchl) and PRI

Qingyuan Zhang, USRA, qingyuan.zhang-1@nasa.gov (Presenter)
Elizabeth M. Middleton, NASA GSFC, elizabeth.m.middleton@nasa.gov
Yen-Ben Cheng, NASA GSFC / ERT, Inc, yen-ben.cheng@nasa.gov
Bo-Cai Gao, NRL, gao@nrl.navy.mil
Karl Fred Huemmrich, NASA GSFC/UMBC, karl.f.huemmrich@nasa.gov
Petya Krasteva Entcheva Campbell, NASA GSFC/JCET/UMBC, petya.campbell@nasa.gov
Lawrence A Corp, SSAI, lawrence.a.corp@nasa.gov
Alexei Lyapustin, NASA GSFC/GEST UMBC, alexei.i.lyapustin@nasa.gov
Yujie Wang, UMBC, yujie.wang-1@nasa.gov
Andrew L Russ, USDA, andrew.russ@ars.usda.gov
William P Kustas, USDA, bill.kustas@ars.usda.gov
John H Prueger, USDA, john.prueger@ars.usda.gov

PRI and fAPARchl are integrated to estimate terrestrial ecosystem GPP. The fAPARchl is derived using the canopy-leaf coupled radiative transfer model SAIL+PROSPECT. PRI has been shown its capability to track light use efficiency (LUE). We use field based ASD canopy measurements, EO-1 Hyperion images and MODIS images collected over corn in a 21 ha experimental watershed. In addition to the widely used fAPARcanopy and fAPARchl, we also show fAPARfoliage and fAPARnon-chl maps. The new fAPARchl can provide us with an enhanced fAPAR information. We calculated PRI on the spectral resolution of 3 nm and 10 nm, respectively. We present an integration of the fAPARchl and PRI to track GPP from field site level to satellite imagery including EO-1 Hyperion and MODIS.

Presentation Type:  Poster

Session:  Coupled Processes at Land-Atmosphere-Ocean Interfaces   (Mon 4:00 PM)

Associated Project(s): 

• Middleton, Betsy: Spectral Bio-Indicators of Ecosystem Photosynthetic Efficiency ...details
• Middleton, Betsy: Spectral Bio-Indicators of Ecosystem Photosynthetic Efficiency II: Synthesis and Integration ...details

Poster Location ID: 102