Accelerated Canopy Chemistry Program (ACCP) Project/Campaign Document

Summary:

Table of Contents:

• 1 Project/Campaign Overview
• 2 Data Availability
• 3 Data Access
• 4 Principal Investigator Information
• 5 Submitting Investigator Information
• 6 References
• 7 Glossary of Terms
• 8 List of Acronyms
• 9 Document Information

1. Project/Campaign Overview:

Name of Project/Campaign:

Accelerated Canopy Chemistry Program (ACCP)

Project/Campaign Introduction:

In the autumn of 1991, the High Resolution Imaging Spectrometer (HIRIS) was de-selected for the EOS program. However, the EOS Investigator Working Group (IWG) had determined that the potential for high spectral resolution remote sensing to estimate nitrogen and lignin concentrations in vegetative canopies, and from these, rates of ecosystem function, was not addressed by other EOS instruments. So, the HIRIS Science Team used its remaining funding to clarify the scientific validity of this application forming the Accelerated Canopy Chemistry Program (ACCP).

Project/Campaign Mission Objectives:

The ACCP was charged to determine whether a sound theoretical and empirical basis existed for the estimation of nitrogen and lignin concentrations in ecosystem canopies from remote sensing data.

Discipline(s):

Canopy chemistry, remote sensing.

Geographic Region(s):

• Harvard Forest, MA
• Blackhawk Island, WI
• Howland, ME
• Gainesville, FL
• Jasper Ridge, CA
• Dunnigan, CA
• Pleasant Grove, CA

Detailed Project/Campaign Description:

There were two major types of data collected, chemistry data and spectral data. The analysis techniques attempted to derive the measured chemistry data from the spectral data. Relationships were sought at three levels: the leaf level, the canopy level, and the plot level. A "canopy" is a group of seedlings of the same species that have been bunched together to replicate a real forest canopy on a small scale, and a "plot" is a naturally existing 40 meter x 40 meter area of a closed canopy forest. The chemical constituents of leaves that came from trees from either the canopies or the plots were measured using wet chemistry techniques. Spectra of wet and/or dry leaves were measured using the NIRS 6500 laboratory spectrometer. Spectra of the seedling canopies were collected using a field spectrometer, and spectra of the plots were taken using an airborne imaging spectrometer.

2. Data Availability:

Data Type(s):

• leaf level chemistry
• seedling canopy level chemistry
• plot level chemistry
• leaf spectra
• seedling canopy spectra
• plot spectra
• seedling architecture

Input/Output Media:

All data files are available via FTP or CD-ROM.

Proprietary Status:

All ACCP data are non-proprietary.

3. Data Access:

Data Center Location:

The Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC) is housed within the Environmental Sciences Division of the Oak Ridge National Laboratory in Oak Ridge, Tennessee, U.S.A.

Contact Information:

ORNL DAAC User Services

(865) 241-3952

ornldaac@ornl.gov

ornl@eos.nasa.gov

Associated Costs:

Data are available to all researchers. There is no cost for data.

4. Principal Investigator Information:

This is a list of all PI's from the original and follow-on ACCP Team:

John Aber

Chris Borel

Roger Clark

Paul Curran

Jennifer Dungan

Siegfried Gerstl

Alex Goetz

Lee Johnson

Pamela Matson

Mary Martin

John Melack

Ranga Myneni

Susan Ustin

Carol Wessman

Barbara Yoder

5. Submitting Investigator Information:

Kathy Heidebrecht

University of Colorado

vc: 303-492-1866

fax: 303-492-5070

kathy@cses.colorado.edu

6. References:

 

On-line information is available from the following World Wide Web site:

CANOPY CHEMISTRY (ACCP)

8. List of Acronyms:

ACCP - Accelerated Canopy Chemistry Program

A more complete list of acronyms is available at http://cdiac.esd.ornl.gov/cdiac/pns/acronyms.html. For additional terms, see the EOSDIS list of acronyms at http://www-v0ims.gsfc.nasa.gov/v0ims/acronyms.html.

9. Document Information:

Document Revision Date:

March 2, 1999

Document Review Date:

October 7, 2008

Document Curator:

webmaster@daac.ornl.gov

Document URL:

/ACCP/accp_pro.html http://daac.ornl.gov/ACCP/accp_pro.html