BOREAS TGB-03 Dissolved Organic Carbon Data from the NSA Summary: The BOREAS TGB-03 team measured Dissolved Organic Carbon (DOC) in water samples from several sources during the summer of 1994 in the Northern Study Area. The following methodology and file descriptions were compiled by BORIS staff from various sources. Contact Information: Dr. Tim Moore McGill University Department of Geography Montreal, Quebec (514) 398-4111 Jeffrey A. Newcomer Raytheon ITSS NASA GSFC Greenbelt, MD (301) 286-7858 (301) 286-0239 (fax) Jeffrey.Newcomer@gsfc.nasa.gov Methods: The purpose of this work was to establish the major sources, sinks and fluxes of dissolved organic carbon (DOC) in the Northern Study Area. Data on DOC concentrations taken from samples representing the major sources and sinks were to be combined with hydrologic measurements (e.g. precipitation, stream flow etc.) to calculate DOC fluxes. Precipitation was collected in open funnels located at the Old Jack Pine (OJP) and Fen Tower site, with a small plug of glass wool to minimize particulate contamination. The funnel at the OJP site was placed on the ground in an open area and the funnels at the Fen tower site latter were placed on the tower. Throughfall was collected in funnels at the Old Jack Pine site, and sites covered by aspen and black spruce along the Old Black Spruce trail. Stemflow measurements, collecting water by wrapping a tube around tree trunks, were made at the same sites, along with collection of water percolating through the organic surface layer, by zero-tension lysimeter trays. The very dry 1994 summer precluded the collection of subsurface water, but water flowing in small seeps near the Old Black Spruce trail was collected. Pore water was collected from several sites in the peatland by inserting tubes to a depth of 90 cm. Samples were collected from several beaver ponds, usually where water came through the dam. Stream water samples were collected from the East, West and Sapochi Rivers, near where discharge measurements were made. Sample collection was on approximately weekly frequencies. Samples were passed through a Gelman AE (0.45 µm nominal pore diameter). Specific conductivity was also measured, but is not given here. Samples were kept refrigerated (4° C) and sent to Montreal for DOC analysis. A Shimadzu Model 500 High Temperature Catalytic Analyzer was employed to determine DOC concentrations, which are expressed in mg L-1. Data File Descriptions: The following sections describe the data files. The files are presented in alphabetical order by name. FEN_OJP_PRECIP_DOC.DAT Column 1: Julian day Column 2: Precipitation at Old Jack Pine (OJP) Column 3: Precipitation at Tower Fen Column 4: OJP precipitation collected above canopy Notes: The problem with this file is that the year of data collection and geographic coordinates were not provided. Based on the names of the sites given one could assume that the North American Datum of 1983 (NAD83) coordinates of the locations are: Latitude Longitude NSA-OJP-FLXTR 55.92842 -98.62396 NSA-FEN_FLXTR 55.91481 -98.42072 GILLAM_BEAVER_PONDS_DOC.DAT Column 1: Julian day Column 2: Gillam Road beaver pond Column 3: GSR 1 beaver pond Column 4: GSR 2 beaver pond Column 5: GSR 3 beaver pond Column 6: GSR 5 beaver pond Notes: The problem with this file is that the year of data collection and geographic coordinates were not provided (although a text description of the sample locations was given). The TGB-05 team made measurements at a Beaver Pond along Gillam Road which is most likely the same location at which TGB-03 made their measurements. Based on this information, some estimated North American Datum of 1983 (NAD83) coordinates of the locations are: Latitude Longitude Gillam Beaver Pond 55.8958 -98.7583 Gillam Beaver Pond 1 55.8958 -98.7583 Gillam Beaver Pond 2 55.8958 -98.7583 Gillam Beaver Pond 3 55.8958 -98.7583 Gillam Beaver Pond 5 55.8958 -98.7583 OBS_BEAVER_PONDS_DOC.DAT Column 1: Julian day Column 2: OBS trail beaver pond 1 Column 3: OBS trail beaver pond 2 Column 4: OBS trail beaver pond 3 Column 5: OBS trail beaver pond 4 Notes: The problem with this file is that the year of data collection and geographic coordinates were not provided. Although the actual sampling coordinates cannot be determined, the North American Datum of 1983 (NAD83) coordinates of the NSA OBS flux tower site which is assumed to be near the beaver ponds are: Latitude Longitude NSA-OBS-FLXTR 55.88007 -98.48139 OBS_TRAIL_SEEPAGE_DOC.DAT Column 1: Julian day Column 2: Water from seep draining small catchment near aspen along OBS trail Column 3: Water from seep draining small catchment near spruce along OBS trail Notes: The problem with this file is that the year of data collection and geographic coordinates were not provided. Although the actual sampling coordinates cannot be determined, the North American Datum of 1983 (NAD83) coordinates of the NSA OBS flux tower site at the end of the indicated trail are: Latitude Longitude NSA-OBS-FLXTR 55.88007 -98.48139 OBS_TRAIL_UPLAND_DOC.DAT Column 1: Julian day Column 2: Canopy throughfall in aspen stand along OBS trail Column 3: Tree stemflow in aspen stand along OBS trail Column 4: Soil water in aspen stand along OBS trail Column 5: Canopy throughfall in spruce stand along OBS trail Column 6: Tree stemflow in spruce stand along OBS trail Column 7: Soil water in spruce stand along OBS trail Notes: The problem with this file is that the year of data collection and geographic coordinates were not provided. Although the actual sampling coordinates cannot be determined, the North American Datum of 1983 (NAD83) coordinates of the NSA OBS flux tower site which is assumed to be near the beaver ponds are: Latitude Longitude NSA-OBS-FLXTR 55.88007 -98.48139 OJP_BEAVER_PONDS_DOC.DAT Column 1: Julian day Column 2: OJP beaver pond 2 Column 3: OJP beaver pond 3 Column 4: OJP beaver pond 4 Column 5: OJP beaver pond 5 Notes: The problem with this file is that the year of data collection and geographic coordinates were not provided. Although the actual sampling coordinates cannot be determined, the North American Datum of 1983 (NAD83) coordinates of the NSA OJP flux tower site which is assumed to be near the beaver ponds are: Latitude Longitude NSA-OJP-FLXTR 55.92842 -98.62396 OJP_UPLAND_DOC.DAT Column 1: Julian day Column 2: Canopy throughfall at OJP Column 3: Tree stemflow at OJP Column 4: Soil water at OJP Notes: The problem with this file is that the year of data collection and geographic coordinates were not provided. Based on the name of the site given one could assume that the North American Datum of 1983 (NAD83) coordinates of the location are: Latitude Longitude NSA-OJP-FLXTR 55.92842 -98.62396 SAPOCHI_DOC_1.DAT Column 1: Julian day Column 2: East branch river, where it crosses the Nelson House Road Column 3: West branch river, where it crosses the Nelson House Road Column 4: Sapochi river, where it crosses the Nelson House Road Notes: The problem with this file is that the year of data collection and geographic coordinates were not provided (although a text description of the sample locations was given). A map of the area did not clearly identify which branch was the East and West branches of the river. Only the main branch of the river was labeled. Because of the flat topography, there were many different branches of the river. Based on the names of the site descriptions and information assumed from the SAPOCHI_DOC_1.DAT file, some estimated North American Datum of 1983 (NAD83) coordinates of the locations are: Latitude Longitude Main Sapochi 55.91043 -98.49639 SAPOCHI_DOC_2.DAT Column 1: Date Column 2: East branch river, where it crosses the Nelson House Road Column 3: West branch river, where it crosses the Nelson House Road Column 4: Sapochi river, where it crosses the Nelson House Road Notes: The problem with this file is that no description of the sample locations was given. A map of the area did not clearly identify which branch was the East and West branches of the river. Only the main branch of the river was labeled. Because of the flat topography, there were many different branches of the river. Based on the names of the site descriptions and information assumed from the SAPOCHI_DOC_1.DAT file, some estimated North American Datum of 1983 (NAD83) coordinates of the locations are: Latitude Longitude Main Sapochi 55.91043 -98.49639 TOWER_BEAVER_PONDS_DOC.DAT Column 1: Julian day Column 2: Tower beaver pond outlet Notes: The problem with this file is that the year of data collection and geographic coordinates were not provided. Although the actual sampling coordinates cannot be determined, the North American Datum of 1983 (NAD83) coordinates of the NSA BP flux tower site are: Latitude Longitude NSA-9BP-FLXTR 55.84225 -98.02747 TOWER_FEN_COLLAPSE_BOG.DAT Column 1: Julian day Column 2: Collapse bog moat Column 3: Collapse bog, spur 1, peat porewater, 20 cm depth Column 4: Collapse bog, spur 1, peat porewater, 50 cm depth Column 5: Collapse bog, spur 1, peat porewater, 90 cm depth Column 6: Collapse bog, spur 2, peat porewater, 20 cm depth Column 7: Collapse bog, spur 2, peat porewater, 50 cm depth Column 8: Collapse bog, spur 2, peat porewater, 90 cm depth Column 9: Collapse bog, spur 3, peat porewater, 20 cm depth Column 10: Collapse bog, spur 3, peat porewater, 50 cm depth Column 11: Collapse bog, spur 3, peat porewater, 90 cm depth Notes: The problem with this file is that the year of data collection and geographic coordinates were not provided. Although the actual sampling coordinates cannot be determined, the North American Datum of 1983 (NAD83) coordinates of the primary collapse bog near the NSA Fen flux tower site are: Latitude Longitude NSA-FEN-FLXTR 55.918 -98.418 TOWER_FEN_COLLAPSE_FEN_MOAT_DOC.DAT Column 1: Julian day Column 2: Collapse fen moat Column 3: Collapse fen, spur 2, peat porewater, 20 cm depth Column 4: Collapse fen, spur 2, peat porewater, 50 cm depth Column 5: Collapse fen, spur 2, peat porewater, 90 cm depth Column 6: Collapse fen, spur 3, peat porewater, 20 cm depth Column 7: Collapse fen, spur 3, peat porewater, 50 cm depth Column 8: Collapse fen, spur 3, peat porewater, 90 cm depth Column 9: Collapse fen, spur 4, peat porewater, 20 cm depth Column 10: Collapse fen, spur 4, peat porewater, 50 cm depth Column 11: Collapse fen, spur 4, peat porewater, 90 cm depth Notes: The problem with this file is that the year of data collection and geographic coordinates were not provided. Although the actual sampling coordinates cannot be determined, the North American Datum of 1983 (NAD83) coordinates of the NSA Fen flux tower site are: Latitude Longitude NSA-FEN-FLXTR 55.918 -98.418 TOWER_FEN_DOC.DAT Column 1: Julian day Column 2: Tower fen moat Column 3: Tower fen, spur 2, peat porewater, 20 cm depth Column 4: Tower fen, spur 2, peat porewater, 50 cm depth Column 5: Tower fen, spur 2, peat porewater, 90 cm depth Column 6: Tower fen, spur 3, peat porewater, 20 cm depth Column 7: Tower fen, spur 3, peat porewater, 50 cm depth Column 8: Tower fen, spur 3, peat porewater, 90 cm depth Column 9: Tower fen, spur 4, peat porewater, 20 cm depth Column 10: Tower fen, spur 4, peat porewater, 50 cm depth Column 11: Tower fen, spur 4, peat porewater, 90 cm depth Notes: The problem with this file is that the year of data collection and geographic coordinates were not provided. Although the actual sampling coordinates cannot be determined, the North American Datum of 1983 (NAD83) coordinates of the NSA Fen flux tower site are: Latitude Longitude NSA-FEN-FLXTR 55.917 -98.418 TOWER_FEN_PRECIP_DOC.DAT Column 1: Date Column 2: Precipitation DOC Notes: The problem with this file is that geographic coordinates were not provided (although a text description of the sample location was given). Based on the name of the site, some estimated North American Datum of 1983 (NAD83) coordinates of the locations are: Latitude Longitude NSA-FEN-FLXTR 55.91481 -98.42072 TOWER_FEN_WEIR_DOC.DAT Column 1: Julian day Column 2: Queen's weir near Tower Fen Notes: The problem with this file is that the year of data collection and geographic coordinates were not provided. Although the actual sampling coordinates cannot be determined, the North American Datum of 1983 (NAD83) coordinates of the NSA Fen flux tower site are: Latitude Longitude NSA-FEN-FLXTR 55.91481 -98.42072 Data Access: Contact for Data Center/Data Access Information: These BOREAS data are available from the Earth Observing System Data and Information System (EOS-DIS) Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC). The BOREAS contact at ORNL is: ORNL DAAC User Services Oak Ridge National Laboratory (865) 241-3952 ornldaac@ornl.gov ornl@eos.nasa.gov Procedures for Obtaining Data: BOREAS data may be obtained through the ORNL DAAC World Wide Web site at http://www-eosdis.ornl.gov/ or users may place requests for data by telephone, electronic mail, or fax. Output Products and Availability: Requested data can be provided electronically on the ORNL DAAC's anonymous FTP site or on various media including, CD-ROMs, 8-MM tapes, or diskettes. The complete set of BOREAS data CD-ROMs, entitled "Collected Data of the Boreal Ecosystem-Atmosphere Study", edited by Newcomer, J., et al., NASA, 1999, are also available. Document Information Written: 07-May-1999 Revised: 11-May-1999 BORIS Review: 10-May-1999 TGB03_DOC.doc 06/09/99