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Arctic LTER Database

Arctic LTER Database

Acceptance and utilization of LTER data requires that:

(1) The Principal Investigator be sent a notice stating reasons for acquiring any data and a description of the publication intentions.
(2) The Principal Investigator of the data set be sent a copy of the report or manuscript prior to submission and be adequately cited in any resultant publications.
(3) A copy of any resultant publications should be sent to:

Principal Investigator
Ecosystems Center
Marine Biological Laboratory
7 MBL St.
Woods Hole, MA 02543

Older Metadata: Attribute table not in XML (EML) file

Dataset URLs:METADATA: HTML, Rich Text, XML(EML compliant)
DATA: Comma Delimited, Excel file with Metadata and data
Dataset ID:1999dlmntd
Dataset Title:Arctic LTER 1999: Soil temperature data from the Toolik Moist Non-acidic Tussock Experimental plots (MNT).
Investigator 1: 
First Name:Sarah
Last Name:Hobbie
Address line 1:
Address line 2:
Address line 3:
Zip Code:
Associate Investigators:JIM LAUNDRE
Keywords:weather, air temperature, relative humidity, soil temperature
Abstract: Soil temperature data from the Toolik Moist Non-acidic Tussock Experimental plots (MNT). In 1999 a Campbell CR10x data logger was installed in block 2 of the experimental plots. The plots are located on a hillside near Toolik Lake (68 38' N, 149 36'W). Sensors were placed in control, fertilized, greenhouse and greenhouse fertilized sites.
Contact: Arctic LTER Information Manager
The Ecosystems Center
Marine Biological Lab
7 MBL St
Woods Hole, MA 02543
Phone (508) 289 7496
Online URL:
Data File Name 1999dlmntd
Beginning Date 5/1/1999
End Date 9/1/1999
Number of Data Records
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes: Log of changes: For Archival Use: DATE RECEIVED: 3May2000, Aug2000 DATA FILE ENTERED BY: J.Laundre DATA FILE VALIDATION: 3May2000 NAME: JL DATE:
Geographic Description Toolik Lake Field Station (68 38' N, 149 36'W), LTER Moist Non-acidic tussock site on hill south of Toolik Lake, North Slope of Alaska.
Location Bounding Box
West Bounding Coordinate
East Bounding Coordinate
North Bounding Coordinate
South Bounding Coordinate
OR if single point location
Organisms studied

A Campbell CR10x data logger, in the LTER Toolik Moist Non-acidic Tussock Experimental plots (block 2), is used to monitor weather and soil temperatures.
Sensors in the control and greenhouses plots include: air temperature and relative humidity. These sensors are read every minute and averaged or totaled every hour.
Two profiles of soil temperature are measured per treatment plot with copper/constantan thermocouple wires (TC) installed at depths of 0,10, 20, and 40 cm in inter-tussock areas. The following label codes are used: CT = control, GH = greenhouses, NP = fertilized, GHF= greenhouse fertilized, plus a 1 or a 2 for the profile number. All soil sensors are read every 15 minutes and averaged every 3 hours.
Hourly, three hourly and daily summaries are in files yyDLMNTH.DAT, yyDLMNTO.DAT, and yDLMNTD.DAT respectively, where yy is the year in which the data are collected. The original data are in file yyDLMNTDAT.ZIP which is archived at The Marine Biological Lab, Woods Hole, MA.
Note: The covers on greenhouses are removed every fall and reinstalled every spring.

Notes: Missing values are indicated by #N/A.
Greenhouse air temperature and RH sensor was not added until Jun15,2000

Sampling Description.


Data Table

Variable    Variable description.    Precision/Units
YEAR:         Year                           YYYY
DATE:        Date                            DD-MMM-YYYY
MONTH:       Month
DAYS:        Julian plus fraction of day
ID:          Program step that output the data
JULIAN:      Julian Date                      ddd
3meter  Celsius
CT Air MAX       Maximum temperature at 3 meter           Celsius
HOUR of CT Air MAX    Time of air temperature max at 3 meters   HHMM
GH Air MAX       Maximum temperature in greenhouse        Celsius
Hour of GH Air MAX    Time of greenhouse air temperature max   HHMM
MIN CT TEMP 3M        Minimum air temperature at 3 meter       Celsius
HOUR of CT Air MIN   Time of air temperature min at 3 meter   HHMM
GH Air MIN       Minimum temperature in greenhouse        Celsius
Hour of GH Air MIN Time of greenhouse air temperature min   HHMM
CT Air 3m           Daily average air temperature at 3 meters    Celsius
GH Air             Daily greenhouse air temperature   Celsius
COMMENTS       Comments about individual datum points.
Variable        Formula

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