BOREAS RSS-17 xylem flux density measurements at the SSA-OBS site

Original publisher: Greenbelt, Md. : National Aeronautics and Space Administration, Goddard Space Flight Center, [2000] OCLC Number: (OCoLC)67292113 Excerpt: ... 7.3 Data Characteristics 7.3.1 Parameter / Variable The parameters contained in the data files on the CD-ROM are: Column Name SITE NAME SUB SITE DATE OBS TIME OBS MEAN XYLEM FLUX DENSITY T1 MEAN XYLEM FLUX DENSITY T2 MEAN XYLEM FLUX DENSITY T3 MEAN XYLEM FLUX DENSITY T4 MEAN XYLEM FLUX DENSITY T5 CRTFCN CODE REVISION DATE 7.3.2 Variable Description / Definition The descriptions of the parameters contained in the data files on the CD-ROM are: Column Name Description SITE NAME The identifier assigned to the site by BOREAS, in the format SSS-TTT-CCCCC, where SSS identifies the portion of the study area: NSA, SSA, REG, TRN, and TTT identifies the cover type for the site, 999 if unknown, and CCCCC is the identifier for site, exactly what it means will vary with site type. SUB SITE The identifier assigned to the sub-site by BOREAS, in the format GGGGG-IIIII, where GGGGG is the group associated with the sub-site instrument e.g. HYD06 or STAFF, and IIIII is the identifier for sub-site, often this will refer to an instrument. DATE OBS The date on which the data were collected. TIME OBS The Greenwich Mean Time ( GMT ) at the end of the period when the data were collected. MEAN XYLEM FLUX DENSITY T1 The mean xylem sap flux density aggregated from one minute measurements made at the SSA-OBS site at tree I, which has a dbh of 138 mm, a height of I0 m, and a projected canopy area of 2.12 m ^ 2. MEAN XYLEM FLUX DENSITY T2 The mean xylem sap flux density aggregated from one minute measurements made at the SSA-OBS site at tree 2, which has a dbh of 90 mm, a height of 6.5 m, and a projected canopy area of 2.0 m ^ 2. MEAN XYLEM FLUX DENSITY T3 The mean xylem sap flux density aggregated from one minute measurements made at the SSA-OBS site at tree 3, which has a dbh of 99 mm, a height of 8.2 m, and a projected canopy are...