BOREAS TE-05 Surface Meteorological and Radiation Data Summary The BOREAS group TE-05 collected measurements in the NSA and SSA on gas exchange, gas composition and tree growth. Measurements of meteorological data, including air and soil temperature, RH, and PPFD were 30-minute intervals during the 1994 IFCs at various sites in the BOREAS NSA and SSA. The data are provided in tabular ASCII files. Table of Contents * 1 Data Set Overview * 2 Investigator(s) * 3 Theory of Measurements * 4 Equipment * 5 Data Acquisition Methods * 6 Observations * 7 Data Description * 8 Data Organization * 9 Data Manipulations * 10 Errors * 11 Notes * 12 Application of the Data Set * 13 Future Modifications and Plans * 14 Software * 15 Data Access * 16 Output Products and Availability * 17 References * 18 Glossary of Terms * 19 List of Acronyms * 20 Document Information 1. Data Set Overview 1.1 Data Set Identification BOREAS TE-05 Surface Meteorological and Radiation Data 1.2 Data Set Introduction Basic meteorological data (air and soil temperature, relative humidity (RH) and photosynthetic photo flux density (PPFD) data) were collected at varying heights in the BOReal Ecosystem-Atmosphere Study (BOREAS) Northern Study Area (NSA) and Southern Study Area (SSA) sites. 1.3 Objective/Purpose The data were collected to provide basic meteorological information at the sampling sites during times when Terrestrial Ecology (TE)-05 team sampled canopy CO2 for carbon and oxygen isotope analysis. 1.4 Summary of Parameters Date, Julian Day, Time Greenwich Mean Time ((GMT) h), Temp at RH sensor (C), midcanopy RH%, 9-m PPFD micromoles m-2 s-1, 1-m PPFD, 9m Tair (C), 1-m Tair (C), 10-cm Tsoil(C), and 20-cm Tsoil (C) collected at 30 min intervals. 1.5 Discussion These measurements were made at both the NSA and SSA during each Intensive Field Campaign (IFC) at the Old Jack Pine (OJP), Old Black Spruce (OBS), T6R5S TE Upland Black Spruce (UBS), and Old Aspen (OA). 1.6 Related Data Sets BOREAS TE-05 Diurnal CO2 Canopy Profile Data BOREAS TE-05 Leaf Gas Exchange Data BOREAS TE-05 Leaf Carbon Isotope Data BOREAS TE-05 Tree Ring and Carbon Isotope Ratio Data BOREAS TE-05 Air Stable Isotope 2. Investigator(s) 2.1 Investigator(s) Name and Title J. R. Ehleringer, University of Utah, Department of Biology Salt Lake City, UT Dr. Larry Flanagan Department of Biological Sciences University of Lethbridge Lethbridge, Alberta T1K CANADA 2.2 Title of Investigation Vegetation-Atmosphere CO2 and H2O Exchange Processes: Stable Isotope Analyses 2.3 Contact Information Contact 1 ------------- J. Renee Brooks Dept. of Biology University of South Florida Tampa, FL (813) 974-7352 (Office) (813) 974-3250 (Dept.) (813) 974-3263 (fax) rjbrooks@chuma.cas.usf.edu Contact 2 ---------------- Dr. Larry Flanagan Department of Biological Sciences University of Lethbridge Lethbridge, Alberta CANADA (403) 380-1858 (403) 329-2082 (fax) larry.flanagan@uleth.ca Contact 3 ------------------- Shelaine Curd Raytheon STX Corporation NASA GSFC Greenbelt, MD (301) 286-2447 (301) 286-0239 (fax) shelaine.curd@gsfc.nasa.gov 3. Theory of Measurements Surface meteorological and radiation data were taken in conjunction with CO2 isotope data collections by TE-05. 4. Equipment 4.1 Sensor/Instrument Description RH: The Campbell Scientific, Inc. 207 Temperature and RH probe contains a Phys- Chem Scientific, Inc., PCRC-11 RH sensor and a Fenwal Electronics UUT51J1 thermistor. The combined RH sensor accuracy is typically better than 5% over the 12-100% RH range. PPFD: Hamamatsu GaAsP Photodiodes G1118 calibrated with a LICOR Quantum sensor. Each sensor was mounted on a flat white platform and then mounted to the Rohn mast and leveled with a bubble level. Temperature: Copper constantan thermocouples. A Campbell CR-21x datalogger was used to record the meteorological data. 4.1.1 Collection Environment The data were collected under ambient conditions during the collection period. 4.1.2 Source/Platform Meteorological data were collected from a Rohn mast extending 9 m up into the canopy. 4.1.3 Source/Platform Mission Objectives The objective was to monitor basic meteorological data within the forest canopy at the location where the TE-05 team collected CO2 for isotope analysis. 4.1.4 Key Variables Date, Julian Day, Time (GMT h), Temp at RH sensor (C), midcanopy RH%, 9-m PPFD micromoles m-2 s-1, 1-m PPFD, 9-m Tair (C), 1-m Tair (C), 10-cm Tsoil(C), and 20-cm Tsoil (C) collected at 30-minute intervals. 4.1.5 Principles of Operation All sensors were attached to a Campbell CR-21x datalogger and monitored every 30 minutes. 4.1.6 Sensor/Instrument Measurement Geometry None given. 4.1.7 Manufacturer of Sensor/Instrument 207 Temperature and RH probe CR-21x datalogger Campbell Scientific, Inc. P.O. Box 551 Logan, UT 84321 (801) 753-2342 Hamamatsu GaAsP Photodiodes G1118 Hamamatsu Corporation 360 Foothill Road P.O.Box 6910 Bridgewater, NJ 08807-0910 (201) 231-0960 Copper Constantan Thermocouples Omega Engineering P.O. Box 1 Broughton Astley Leicestershire LE9 6XR, England (800) 826-6342 4.2 Calibration 4.2.1 Specifications None given. 4.2.1.1 Tolerance The RH probe contains a Phys-Chem Scientific, Inc., PCRC-11 RH Sensor and Fenwal Electronics UUT51J1 thermistor. The combined RH sensor accuracy is typically better than 5% over the 12-100% RH range. 4.2.2 Frequency of Calibration All instruments were calibrated and tested in the lab prior to the first IFC. 4.2.3 Other Calibration Information During each IFC, instruments were checked for placement and orientation but were not recalibrated. 5. Data Acquisition Methods All sensors were attached to a Campbell CR-21x datalogger and monitored every 30 minutes. Note that the 9-m Rohn mast was shorter than the canopy at the SSA OJP, OA, and NSA OA sites. 6. Observations 6.1 Data Notes None given. 6.2 Field Notes The RH sensor for NSA OA during IFC-3 was not operational. 7. Data Description 7.1 Spatial Characteristics 7.1.1 Spatial Coverage NSA OJP flux tower site: Lat/Long: 55.927 N, 98.62 W, Universal Transverse Mercator (UTM) Zone 14, N:6, 197,997 E:523,501. NSA OA canopy access tower site: auxiliary site number T2Q6A, BOREAS Experiment Plan, Version 3, Lat/Long = 55.88N, 98.67 W NSA UBS canopy access tower site: auxiliary site number T6R5S, BOREAS Experiment Plan, Version 3, Lat/Long = 55.70N, 98.51W SSA OJP: Lat/Long: 53.91N, 104.69W, UTM Zone 13, 53.91634 N, 104.69203 W SSA OBS: Lat/Long: 53.98N, 105.12W, UTM Zone 13, 5982100.5 N, 492276.5 E SSA OA: Lat/Long: 53.62N, 106.19W. UTM Zone 13, 5942899.9 N, 420790.5 E 7.1.2 Spatial Coverage Map None given. 7.1.3 Spatial Resolution These are point source measurements at the locations given. 7.1.4 Projection None given. 7.1.5 Grid Description None given. 7.2 Temporal Characteristics 7.2.1 Temporal Coverage The data were collected from 25-MAY-94 to 08-SEP-94. 7.2.2 Temporal Coverage Map IFC-1: NSA OJP: 02-Jun-1994, 7.32 Greenwich Mean Time (GMT) through 03-Jun-1994, 16.32 (GMT) NSA OA: 10-Jun-1994,16.15 (GMT) through 11-Jun-1994, 19.98 (GMT) NSA UBS: 03-Jun-1994, 2.15 (GMT) through 4-Jun-1994, 2.15 (GMT) SSA OA: 29-May-1994,1900 (GMT) through 30-May-1994, 2150 (GMT) SSA OBS: 25-May-1994, 1.50 (GMT) through 27_May-1994, 20.00 (GMT) SSA OJP: 25-May-1994, 2050 (GMT) through 27-May-1994, 2.00 (GMT) IFC-2: NSA OJP: 20-Jul-1994, 21.48 (GMT) through 24-Jul-1994, 22.32 (GMT) NSA OA: 31-Jul-1994, 17.82 (GMT) through 05-Aug-1994, 20.98 (GMT) NSA UBS: 25-Jul-1994, 20.15 (GMT) through 29-Jul-1994, 22.48 (GMT) SSA OA: 25-Jul-1994, 1900 (GMT) through 27-JUL-1994, 17.50 (GMT) SSA OBS: 20-Jul-1994 20.50 (GMT) through 22-Jul-1994, 15.50 (GMT) SSA OJP: 22-Jul-1994, 2.50 (GMT) through 24-Jul-1994, 18.00 (GMT) IFC-3: NSA OJP: 30-Aug-1994, 18.65 (GMT) through 01-Sep-1994, 21.15 (GMT) NSA OA: 05-Sep-1994, 19.32 (GMT) through 07-Sep-1994, 18.65 (GMT) NSA UBS: 02-Sep-1994, 18.48 (GMT) through 04-Sep-1994, 16.15 (GMT) SSA OA: 03-Aug-1994, 17.50 (GMT) through 05-Sep-1994, 18.00 (GMT) SSA OBS: 31-Aug-1994, 18.50 (GMT) through 02-Aug-1994, 17.50 (GMT) SSA OJP: 06-Aug-1994, 18.00 (GMT) through 08-Aug-1994, 18.50 (GMT) 7.2.3 Temporal Resolution Meteorological measurements were made every 30 minutes. 7.3 Data Characteristics Data characteristics are defined in the companion data definition file (te5metd.def). 7.4 Sample Data Record Sample data format shown in the companion data definition file (te5metd.def). 8. Data Organization 8.1 Data Granularity All of the Surface Meteorological and Radiation Data are contained in one dataset. 8.2 Data Format(s) The data files contain numerical and character fields of varying length separated by commas. The character fields are enclosed with a single apostrophe marks. There are no spaces between the fields. Sample data records are shown in the companion data definition files (te5metd.def). 9. Data Manipulations 9.1 Formulae None. 9.1.1 Derivation Techniques and Algorithms None. 9.2 Data Processing Sequence None given. 9.2.1 Processing Steps None given. 9.2.2 Processing Changes None given. 9.3 Calculations None. 9.3.1 Special Corrections/Adjustments millivolt signal from the photodiodes was converted into PPFD using the following equation: PPFD = -1.4 + 71.3 mv R2=0.999 This equation was derived from a comparison between a LICOR quantum sensor and all the photodiodes used in the field. The same equation was used for all photodiode sensors. 9.3.2 Calculated Variables PPFD = -1.4 + 71.3 mv R2=0.999 9.4 Graphs and Plots None given. 10. Errors 10.1 Sources of Error The Rohn masts that the light sensors were attached to were not perfectly vertical, so 9-m PPFD sensors were not perfectly horizontal. 10.2 Quality Assessment None given. 10.2.1 Data Validation by Source None given. 10.2.2 Confidence Level/Accuracy Judgment None given. 10.2.3 Measurement Error for Parameters None given. 10.2.4 Additional Quality Assessments None given. 10.2.5 Data Verification by Data Center Data was examined for general consistency and clarity. 11. Notes 11.1 Limitations of the Data None given. 11.2 Known Problems with the Data All known problems have been removed. 11.3 Usage Guidance None given. 11.4 Other Relevant Information None. 12. Application of the Data Set Meteorological and radiation comparison during IFCís particularly when TE-5 sampled canopy CO2 for carbon and oxygen isotope analysis. 13. Future Modifications and Plans None given. 14. Software 14.1 Software Description None given. 14.2 Software Access None given. 15. Data Access 15.1 Contact Information Ms. Beth Nelson BOREAS Data Manager NASA GSFC Greenbelt, MD (301) 286-4005 (301) 286-0239 (fax) Elizabeth.Nelson@gsfc.nasa.gov 15.2 Data Center Identification See Section 15.1. 15.3 Procedures for Obtaining Data Users may place requests by telephone, electronic mail, or fax. 15.4 Data Center Status/Plans These data are available from the Earth Observing System Data and Information System (EOSDIS ORNL) 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 16. Output Products and Availability None given. 16.1 Tape Products None. 16.2 Film Products None. 16.3 Other Products The data are available in tabular ASCII files. 17. References 17.1 Platform/Sensor/Instrument/Data Processing Documentation None given. 17.2 Journal Articles and Study Reports Sellers, P. and F. Hall. 1994. Boreal Ecosystem-Atmosphere Study: Experiment Plan. Version 1994-3.0, NASA BOREAS Report (EXPLAN 94). Sellers, P. and F. Hall. 1996. Boreal Ecosystem-Atmosphere Study: Experiment Plan. Version 1996-2.0, NASA BOREAS Report (EXPLAN 96). Sellers, P., and F. Hall. 1997. BOREAS Overview Paper. JGR Special Issue. Sellers, P., F. Hall, and K.F. Huemmrich. 1996. Boreal Ecosystem-Atmosphere Study: 1994 Operations. NASA BOREAS Report (OPS DOC 94). Sellers, P., F. Hall, and K.F. Huemmrich. 1997. Boreal Ecosystem-Atmosphere Study: 1996 Operations. NASA BOREAS Report (OPS DOC 96). Sellers, P., F. Hall, H. Margolis, B. Kelly, D. Baldocchi, G. den Hartog, J. Cihlar, M.G. Ryan, B. Goodison, P. Crill, K.J. Ranson, D. Lettenmaier, and D.E. Wickland. 1995. The boreal ecosystem-atmosphere study (BOREAS): an overview and early results from the 1994 field year. Bulletin of the American Meteorological Society. 76(9):1549-1577. 17.3 Archive/DBMS Usage Documentation None. 18. Glossary of Terms None. 19. List of Acronyms ASCII - American Standard Code for Information Interchange BOREAS - BOReal Ecosystem-Atmosphere Study BORIS - BOREAS Information System DAAC - Distributed Active Archive Center EOS - Earth Observing System EOSDIS - EOS Data and Information System GSFC - Goddard Space Flight Center NASA - National Aeronautics and Space Administration NSA - Northern Study Area OA - Old Aspen OBS - Old Black Spruce OJP - Old Jack Pine OJP - Old Jack Pine ORNL - Oak Ridge National Laboratory PANP - Prince Albert National Park PPFD - Photosynthetic Photon Flux Density RH - Relative Humidity TE - Terrestrial Ecology SSA - Southern Study Area UBS - Upland Black Spruce URL - Uniform Resource Locator UTM - Universal Transverse Mercator 20. Document Information 20.1 Document Revision Date Written: 04-May-1995 Last Updated: 05-Jun-1998 20.2 Document Review Date(s) BORIS Review: 27-Oct-1997 Science Review: 20.3 Document ID 20.4 Citation Please contact investigators in Section 2.3. 20.5 Document Curator 20.6 Document URL Keywords Temperature Humidity Surface Meteorology TE05_Met.doc 06/11/98