Science Keywords>SPECTRAL/ENGINEERING>PLATFORM CHARACTERISTICS
Multispectral Bidirectional Reflectance During the Forest Ecosystem Dynamics - Multisensor Aircraft Campaign
 Entry ID: FEDMAC_PARABOLA

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Summary
Abstract: Forest Ecosystem Dynamics Multisensor Airborne Campaign (FED MAC):
Bidirectional Reflectance Measurements of Forest Canopy Using PARABOLA

The Biospheric Sciences Branch (formerly Earth Resources Branch)
within the Laboratory for Terrestrial Physics at NASA's Goddard Space
Flight Center and associated University investigators are involved in
a research program entitled Forest Ecosystem Dynamics (FED) which is
fundamentally concerned with vegetation change of forest ecosystems at
local to regional spatial scales (100 to 10,000 meters) and temporal
scales ranging from monthly to decadal periods (10 to 100 years). The
nature and extent of the impacts of these changes, as well as the
feedbacks to global climate, may be addressed through modeling the
interactions of the vegetation, soil, and energy components of the
boreal ecosystem.

The Portable Apparatus for Rapid Acquisition of Bidirectional
Observations of Land and Atmosphere, or PARABOLA instrument
(see Deering and Leone, 1986 for a complete description) was
employed to measure the directional radiances in essentially the
complete 4 pi irradiance field above and below the spruce-hemlock
canopy under cloudless and overcast sky. The PARABOLA is a three-channel
(visible, near infrared, and mid-infrared; 0.650-0.670, 0.810-0.840,
and 1.620-1.690 um, respectively), radiometer with a scanning head
that turns on two axes, which enables the acquisition of radiance data
for almost the complete sky- and ground-looking hemispheres in
15 degrees instantaneous field-of-view sectors in only 11 s.
Measurements were made during the 1989 experiment with the instrument
deployed on the meteorological tower using a 6.5 m triangular truss
boom. To avoid tower shadowing in 1991, a specially contructed 32 m
telescopic mast was supported on a 4 m long by 1.8 m wide,
hollow-frame trailer adapted for mounting the PARABOLA.

The FED Home Page is at: http://forest.gsfc.nasa.gov/.

Related URL
Link: VIEW PROJECT HOME PAGE


Geographic Coverage
 N: 45.0 S: 45.0  E: -68.0  W: -68.0

Data Set Citation
Dataset Originator/Creator: Donald W. Deering
Dataset Title: Bidirectional Reflectance Measurements of Forest Canopy Using PORTABLE
Dataset Series Name: FED MAC Home Page
Dataset Release Place: NASA/GSFC
Dataset Publisher: NASA/GSFC
Data Presentation Form: ASCII Tables
Online Resource: http://forest.gsfc.nasa.gov/


Temporal Coverage
Start Date: 1989-09-16
Stop Date: 1991-08-25


Location Keywords
CONTINENT > NORTH AMERICA
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MAINE


Data Resolution
Temporal Resolution: Decadal


Science Keywords
ATMOSPHERE >ATMOSPHERIC RADIATION >RADIATIVE FLUX >TOTAL HEMISPHERIC DIFFUSE FLUX    [Definition]
ATMOSPHERE >ATMOSPHERIC RADIATION >REFLECTANCE >BIDIRECTIONAL REFLECTANCE    [Definition]
ATMOSPHERE >ATMOSPHERIC RADIATION >SOLAR RADIATION >DOWNWELLING RADIATION    [Definition]
ATMOSPHERE >ATMOSPHERIC RADIATION >SOLAR RADIATION >UPWELLING RADIATION    [Definition]
SPECTRAL/ENGINEERING >INFRARED WAVELENGTHS >INFRARED RADIANCE    [Definition]
SPECTRAL/ENGINEERING >INFRARED WAVELENGTHS >REFLECTED INFRARED    [Definition]
SPECTRAL/ENGINEERING >PLATFORM CHARACTERISTICS >VIEWING GEOMETRY    [Definition]
SPECTRAL/ENGINEERING >VISIBLE WAVELENGTHS >VISIBLE FLUX    [Definition]
SPECTRAL/ENGINEERING >VISIBLE WAVELENGTHS >VISIBLE RADIANCE    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
GEOSCIENTIFIC INFORMATION
IMAGERY/BASE MAPS/EARTH COVER


Instrument
PARABOLA >Portable Apparatus Rapid Acquisition Bidirectional Observ Land and Atmos    [Information]
RADIOMETERS    [Information]


Project
FED MAC >Forest Ecosystem Dynamics Multisensor Airborne Campaign    [Information]


Keywords
FED MAC
HEMLOCK
PARABOLA
SPRUCE


Originating Center
NASA/GSFC/FED


Data Center
Forest Ecosystem Dynamics Project, Biospheric Sciences Branch, Hydrospheric and Biospheric Sciences Laboratory, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA    [Information]
Data Center URL: http://forest.gsfc.nasa.gov/

Data Center Personnel
Name: BRUCE COOK
 Email: bruce.cook at nasa.gov
Contact Address:
NASA
Goddard Space Flight Center
Mailstop 614.4
 City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA



Distribution
Distribution_Media: WWW
Distribution_Format: ASCII
Fees: Free


Personnel
DONALD W. DEERING
Role: INVESTIGATOR


THOMAS F. ECK
Role: TECHNICAL CONTACT
Phone: 301-614-6625
Fax: 301-614-6695
Email: Thomas.F.Eck at nasa.gov
Contact Address:
NASA
Goddard Space Flight Center
Mailstop 614.4
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA


TYLER B. STEVENS
Role: DIF AUTHOR
Phone: (301) 614-6898
Fax: 301-614-5268
Email: Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA


Publications/References
Walthall, C.L., M. Kim, D.L. Williams, B.W. Meeson, P.A. Agbu,
J.A. Newcomer, and E.L. Levine. 1993. Data sets for modeling: a
retrospective collection of bidirectional reflectance and forest
ecosystem dynamics multisensor aircraft campaign data sets. Remote
Sensing of Environment; 46:340-346.

Deering, D.W., and T.F. Eck. 1992. Canopy Albedo and Transmittance
in a Spruce-Hemlock Forest in mid-September. Agriculture and
Forest Meteorology 59:237-248.

Deering, D.W., E.M. Middleton, and T.F. Eck. 1994. Reflectance
Anisotropy for a Spruce-Hemlock Forest Canopy. Remote Sensing of
Environment; 47:242-260.

Deering, D.W., and P. Leone. 1986. A Sphere-Scanning Radiometer
for Rapid Directional Measurements of Sky and Ground Radiance.
Remote Sensing of Environment; 19:1-24.

Creation and Review Dates
Last DIF Revision Date: 2011-05-05

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