<1995-2001 Barrow Atqasuk ITEX Plot Microclimate v1 metadata.txt> This file contains meta-data for file <1995-2001 Barrow Atqasuk ITEX Plot Microclimate v1 metadata.txt>. File <1995-2001 Barrow Atqasuk ITEX Plot Microclimate v1.txt> contains data representing the microclimate of ITEX plots in Barrow and Atqasuk in a text tab delimited format. The data presented are hourly plant canopy temperature and relative humidity of up to 48 plots (24 experiment open-top chamber plots and 24 control plots) at four sites (Atqasuk Wet Meadow, Atqasuk Dry Heath, Barrow Wet Meadow, and Barrow Dry Heath). Generally the number of plots per site per treatment that data is available for is between 5 and 10 plots. GENERAL INFORMATION PI/DATA CONTACT= Webber, Patrick J (MSU)/ Hollister, Robert D FUNDING SOURCE AWARD # = NSF OPP 9714103 DATA COVERAGE = START: 1995062008; STOP: 2001081607 UTC PLATFORM/SITE = Barrow, Alaska (71o19'N 156o37'W); Atqasuk, Alaska(71o29'N 157o25'W) INSTRUMENT = Onset Computer Corporations StowAway Temperature Loggers, StowAway Relative Humidity Loggers, and Hobo Temperature Loggers. 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 Temperature and Relative Humidity was recorded between every 10- 72 minutes and averaged by the hour. When no data was recorded within an hour (for recording intervals of greater than 1 hour) or if the data was considered erroneous, the average of the hour before and the hour after is presented. Data collection was during the summer only and begun when the site was established (usually within a 2 days of snow melt) and ends on August 15th. Information on the equipment is provided below. HOBO Temperature Logger, StowAway Temperature Logger, StowAway XTI Temperature Logger, and StowAway Relative Humidity Logger 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 <1995-2001 Barrow Atqasuk ITEX Plot Microclimate v1 metadata.txt> strUTC - universal time constant (UTC) year 4(1995-2001) month 2(06-08) day 2(01-31) hour 2(00-24) strAlaska - alaska timezone -8 hours from UTC year 4(1995-2001) month 2(06-08) 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(01-24) 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(01-24) numYear - the year of the recording (1995-2001) numJulian - julian day (1-366) numMonth - month of the year (6-8) numHr - hour of the day (0-23) numTemp - temperature (degree Celsius) at canopy height 13cm numRH - relative humidity (%) at canopy height 13cm NOTE -999.9 - indicates missing data