NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Applications of the BIOPHYS Algorithm for Physically-Based Retrieval of Biophysical, Structural and Forest Disturbance InformationCanopy reflectance model inversion using look-up table approaches provides powerful and flexible options for deriving improved forest biophysical structural information (BSI) compared with traditional statistical empirical methods. The BIOPHYS algorithm is an improved, physically-based inversion approach for deriving BSI for independent use and validation and for monitoring, inventory and quantifying forest disturbance as well as input to ecosystem, climate and carbon models. Based on the multiple-forward mode (MFM) inversion approach, BIOPHYS results were summarized from different studies (Minnesota/NASA COVER; Virginia/LEDAPS; Saskatchewan/BOREAS), sensors (airborne MMR; Landsat; MODIS) and models (GeoSail; GOMS). Applications output included forest density, height, crown dimension, branch and green leaf area, canopy cover, disturbance estimates based on multi-temporal chronosequences, and structural change following recovery from forest fires over the last century. Good correspondences with validation field data were obtained. Integrated analyses of multiple solar and view angle imagery further improved retrievals compared with single pass data. Quantifying ecosystem dynamics such as the area and percent of forest disturbance, early regrowth and succession provide essential inputs to process-driven models of carbon flux. BIOPHYS is well suited for large-area, multi-temporal applications involving multiple image sets and mosaics for assessing vegetation disturbance and quantifying biophysical structural dynamics and change. It is also suitable for integration with forest inventory, monitoring, updating, and other programs.
Document ID
20120010400
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Peddle, Derek R.
(Lethbridge Univ. Lethbridge, Alberta, Canada)
Huemmrich, K. Fred
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hall, Forrest G.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Masek, Jeffrey G.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Soenen, Scott A.
(Lethbridge Univ. Lethbridge, Alberta, Canada)
Jackson, Chris D.
(Lethbridge Univ. Lethbridge, Alberta, Canada)
Date Acquired
August 26, 2013
Publication Date
December 11, 2011
Publication Information
Publication: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Publisher: Institute of Electrical and Electronics Engineers
Volume: 4
Issue: 4
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
GSFC.JA.00340.2012
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available