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BOREAS TE-19 Ecosystem Carbon Balance ModelThe BOREAS TE-19 team developed a model called the Spruce and Moss Model (SPAM) designed to simulate the daily carbon balance of a black spruce/moss boreal forest ecosystem. It is driven by daily weather conditions, and consists of four components: (1) soil climate, (2) tree photosynthesis and respiration, (3) moss photosynthesis and respiration, and (4) litter decomposition and associated heterotrophic respiration. The model simulates tree gross and net photosynthesis, wood respiration, live root respiration, moss gross and net photosynthesis, and heterotrophic respiration (decomposition of root litter, young needle and moss litter, and humus). These values can be combined to generate predictions of total site net ecosystem exchange of carbon (NEE), total soil dark respiration (live roots + heterotrophs + live moss), spruce and moss net productivity, and net carbon accumulation in the soil. To date, simulations have been of the BOREAS NSA-OBS and SSA-OBS tower sites, from 1968-95 (except 1990-93). The files include source code and sample input and output files in ASCII format. The data files are available on a CD-ROM (see document number 20010000884), or from the Oak Ridge National Laboratory (ORNL) Distributed Activity Archive Center (DAAC).
Document ID
20010004610
Acquisition Source
Goddard Space Flight Center
Document Type
Technical Memorandum (TM)
Authors
Hall, Forrest G.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Papagno, Andrea
(Raytheon Information Technology and Scientific Services Greenbelt, MD United States)
Frolking, Steve
(New Hampshire Univ. Durham, NH United States)
Date Acquired
September 7, 2013
Publication Date
October 1, 2000
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
NAS 1.15:209891/VOL180
NASA/TM-2000-209891/VOL180
Rept-2000-03136-0/VOL180
Funding Number(s)
PROJECT: RTOP 462-33-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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