<1998-2001 Barrow Atqasuk Detailed Plot Microclimate v1 metadata.txt> This file contains meta-data for file <1998-2001 Barrow Atqasuk Detailed Plot Microclimate v1 metadata.txt>. File <1998-2001 Barrow Atqasuk Detailed Plot Microclimate v1.txt> contains data representing the detailed microclimate of ITEX plots in Barrow and Atqasuk in a text tab delimited format. The data presented are hourly plant canopy temperature, soil temperature, soil moisture, and soil salinity of four plots (two experiment open-top chamber plots and two control plots) at four sites (Atqasuk Wet Meadow, Atqasuk Dry Heath, Barrow Wet Meadow, and Barrow Dry Heath). GENERAL INFORMATION PI/DATA CONTACT= Webber, Patrick J (MSU)/ Hollister, Robert D FUNDING SOURCE AWARD # = NSF OPP 9714103 DATA COVERAGE = START: 1998081908; STOP: 2001082507 UTC PLATFORM/SITE = Barrow, Alaska (71o19'N 156o37'W); Atqasuk, Alaska(71o29'N 157o25'W) INSTRUMENT = Campbell CR10X (MRC TP101M Temperature Probes, Vitel HYD-10-A), Onset HOBO H8 Pro DATA VERSION = 1.0 (12 December 2001), PRELIMINARY [very likely to contain errors] CONTACT INFORMATION Robert D. Hollister 100 North Kedzie Hall Michigan State University East Lansing, MI 48824-1031 Voice: 517 432-2399 Fax: 517 432-2150 Email: holliste@msu.edu DATA COLLECTION MRC Temperature Probes and Vitel Hydra Probes were recorded on a CR10X Datalogger. Temperatures were taken every 15 minutes averaged and recorded every hour. Vitel Voltages were recorded every hour and were converted to WFV and Salinity with the Vitel Program . Temperatures recorded with the HOBO Pro were recorded every 10-18 minutes and were averaged each hour. Details off the precision and accuracy of each recording device can be obtained from the manufacture. Information on the equipment is provided below. CR10X Produced by Campbell Scientific Inc. 815 W. 1800 N. Logan, UT 84321-1784 USA MRC TP101M Temperature Probes Specially produced TP101M Temperature Probes 45cm length with total of six thermistor data points at: 1, 5, 10, 15, 30, 45cm. Produced by Measurement Research Corporation 4126 4th Street NW Gig Harbor, WA 98335 USA Vitel HYD-10-A Hydra Probe Produced by Stevens Vitel Hydrological & Meteorological Systems. 14100 Parke Long Court Chantilly, VA 20151 USA HOBO H8 Pro Produced by Onset Computer Corporation PO Box 3450 Pocasset, MA 02559-3450 USA META-DATA FORMAT The following prefixes have been used to designate data type. str - indicates string (text) data ysn - indicates yes or no data dtm - indicates date time data num - indicates numeric data All string data within a column contain the same number of characters. The meaning of each character is defined at each position by stating the length of the identifier with a numeric and placing all the data codes used within parentheses directly after the numeric. For example: strYear - year of recording 4(1998-2001) The above example describes a column that represents the year the data was recorded, it is string data that is always four characters in length and the only data codes used are 1998, 1999, 2000 and 2001. COLUMN DESCRIPTIONS for <1998-2001 Barrow Atqasuk Detailed Plot Microclimate v1 metadata.txt> strUTC - universal time constant (UTC) year 4(1994-2001) month 2(01-12) day 2(01-31) hour 2(00-24) strAlaska - alaska timezone -8 hours from UTC year 4(1994-2001) month 2(01-12) day 2(01-31) hour 2(00-24) strIdLo - the location of the recording site 1(B=Barrow Alaska,A=Atqasuk Alaska) community 1(D=Dry Heath Tundra,W=Wet Meadow Tundra) treatment 1(C=Control,E=Open-Top Chamber) plot 2(T1-T2) strSitCom - the site and community site 1(B=Barrow Alaska,A=Atqasuk Alaska) community 1(D=Dry Heath Tundra,W=Wet Meadow Tundra) strTrea - treatment 1(C=Control,E=Open-Top Chamber) strPlot - plot 2(T1-T2) numYear - the year of the recording (1998-2001) numJulian - julian day (1-366) numMonth - month of the year (1-12) numHr - hour of the day (0-23) numTempCa - temperature (degree Celsius) at canopy height 13cm numTemp0 - temperature (degree Celsius) at ground surface 0cm numTemp5 - temperature (degree Celsius) below ground at -5cm numTemp10 - temperature (degree Celsius) below ground at -10cm numTemp15 - temperature (degree Celsius) below ground at -15cm numTemp30 - temperature (degree Celsius) below ground at -30cm numTemp45 - temperature (degree Celsius) below ground at -45cm numWFV - water fraction by volume (wfv) at -7.5cm numNaCl - total sodium chloride (NaCl)(grams) per unit volume (liter) at -7.5cm depth NOTE -999.9 - indicates missing data