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Conditions of Use

The re-use of scientific data has the potential to greatly increase communication, collaboration and synthesis within and among disciplines, and thus is fostered, supported and encouraged. Permission to use this dataset is granted to the Data User free of charge subject to the following terms:

1) Acceptable use. Use of the dataset will be restricted to academic, research, educational, government, recreational, or other not-for-profit professional purposes. The Data User is permitted to produce and distribute derived works from this dataset provided that they are released under the same license terms as those accompanying this Data Set. Any other uses for the Data Set or its derived products will require explicit permission from the dataset owner.
2 ) Redistribution. The data are provided for use by the Data User. The metadata and this license must accompany all copies made and be available to all users of this Data Set. The Data User will not redistribute the original Data Set beyond this collaboration sphere.
3 ) Citation. It is considered a matter of professional ethics to acknowledge the work of other scientists. Thus, the Data User will properly cite the Data Set in any publications or in the metadata of any derived data products that were produced using the Data Set. Citation should take the following general form: Creator, Year of Data Publication, Title of Dataset, Publisher, Dataset identifier. For example:

Shaver, G. 1989. Above ground biomass in acidic tussock tundra experimental site, 1989, Arctic LTER, Toolik, Alaska. Arctic LTER, Marine Biological Lab, Woods Hole, Ma 02543. 1989gsttbm http://ecosystems.mbl.edu/arc/terrest/biomass/index.shtml 

4 ) Acknowledgement. The Data User should acknowledge any institutional support or specific funding awards referenced in the metadata accompanying this dataset in any publications where the Data Set contributed significantly to its content. Acknowledgements should identify the supporting party, the party that received the support, and any identifying information such as grant numbers. For example:

Data sets were provided by the Arctic LTER. This material is based upon work supported by the National Science Foundation under Grants #DEB-981022, 9211775, 8702328; #OPP-9911278, 9911681, 9732281, 9615411, 9615563, 9615942, 9615949, 9400722, 9415411, 9318529; #BSR 9019055, 8806635, 8507493.

5 ) Notification. The Data User will notify the Data Set Contact when any derivative work or publication based on or derived from the Data Set is distributed. The Data User will provide the data contact with two reprints of any publications resulting from use of the Data Set and will provide copies, or on-line access to, any derived digital products. Notification will include an explanation of how the Data Set was used to produce the derived work.
6 ) Collaboration. The Data Set has been released in the spirit of open scientific collaboration. Data Users are thus strongly encouraged to consider consultation, collaboration and/or co-authorship with the Data Set Creator.

By accepting this Data Set, the Data User agrees to abide by the terms of this agreement. The Data Owner shall have the right to terminate this agreement immediately by written notice upon the Data User's breach of, or non-compliance with, any of its terms. The Data User may be held responsible for any misuse that is caused or encouraged by the Data User's failure to abide by the terms of this agreement.

Disclaimer

While substantial efforts are made to ensure the accuracy of data and documentation contained in this Data Set, complete accuracy of data and metadata cannot be guaranteed. All data and metadata are made available "as is". The Data User holds all parties involved in the production or distribution of the Data Set harmless for damages resulting from its use or interpretation.

Dataset URLs:METADATA: HTML, Rich Text, XML(EML compliant)
DATA: Comma Delimited, Excel file with Metadata and data
Dataset ID:98dltlo.3
Dataset Title:Soil temperatures, lake temperature, lake depth, and evaporation pan depth and pan water temperature data from Toolik Field Station, Toolik Lake, Alaska for 1998.
Investigator 1: 
First Name:Gus
Last Name:Shaver
Organization:Marine Biological Lab
Address line 2:Ecosystems Center
Address line 3:7 MBL St
City:Woods Hole
State:MA
Zip Code:02543
Country:USA
Investigator 2: 
First Name:Jim
Last Name:Laundre
Organization:Marine Biological Lab
Address line 2:Ecosystems Center
Address line 3:7 MBL St
City:Woods Hole
State:MA
Zip Code:02543
Country:USA
Associate Investigators:
Keywords:soil temperature, lake temperature, lake depth, evaporation pan, weather
Abstract:Weather data file for Arctic Tundra LTER site at Toolik Lake. Only sensors measured every 10 minutes and averaged every three hours are include in this file, i.e. soil temperatures, lake temperature, lake depth, and evaporation pan depth and pan water temperature.
For questions about the Metadata and data contact the Investigators.
For information about this web site contact:
Arctic LTER Information Manager
The Ecosystems Center
Marine Biological Lab
7 MBL St
Woods Hole, MA 02543
Phone (508) 289 7496
Email: arc_im@mbl.edu
Online URL: http://ecosystems.mbl.edu/ARC/
DATA FILE INFORMATION:
Data File URL http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-arc.1537&urlTail=weather/tl/data/98dltlo.csv
Data File Name 98dltlo.dat
Beginning Date 5/1/1998
End Date 9/1/1998
Number of Data Records 2920
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes: Log of changes: 17Jun99 added winter values and general error checked. Added Year value and change date value to dd-mmm-yyyy. JL For Archival Use: DATE RECEIVED: August 1998 DATA FILE ENTERED BY: Jim Laundre DATA FILE VALIDATION: NAME: Jim Laundre DATE: 12NOV98
Version 3: Metadata updated to newer form (with sites sheet). Units updated to current standards. Discrepancy with variable names fixed. CH April 2013.
 
RESEARCH LOCATION:                  
Location Name TFS Weather Station Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One Select Site or enter New One  
Geographic Description University of Alaska Fairbanks Toolik Field Station, North Slope of Alaska (68 degrees 38'N, 149 degrees 36'W). Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description Enter Description  
Location Bounding Box                  
West Bounding Coordinate                  
East Bounding Coordinate                  
North Bounding Coordinate                  
South Bounding Coordinate                  
OR if single point location                  
Latitude 68.628228973 In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees  
Longitude -149.596001285 In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees  
Elevation 726.5 In Meters In Meters In Meters In Meters In Meters In Meters In Meters  
Link to Google Map View on Google Map                
                   
 
TAXONOMIC COVERAGE:
Organisms studied
 
Methods:

Weather data has been collected at Toolik Lake (68 degrees 38'N, 149 degrees 36'W) by a Campbell 21x datalogger since June 1988. Sensors measured every minute and averaged or totaled every hour include: air temperature and relative humidity at 1 and 5 meters, wind speed at 1 and 5 meters, wind direction at 5 meters, global solar radiation, photosynthetically active radiation, barometric pressure, and precipitation. Sensors measured every 10 minutes and averaged every three hours include soil temperatures, lake temperature, lake depth, and evaporation pan depth and pan water temperature. Net radiation and pan evaporation are only measured during the summer months. The hourly data are in the file 98DLTLH.DAT, the three hourly data are in 98DLTLO.DAT, and daily summaries are in 98DLTLD.DAT. A second Campbell 21x datalogger about 700 meters from the main weather station logs air and soil temperatures and photosynthetically active radiation in the experimental treatment plots. Treatments include greenhouse, shading, and fertilization. In the control plot wind speed and direction, global solar radiation and unfrozen precipitation are also measured. This station is also used as a backup to the main weather station. The full description of the sensors and site is in file SENSORS.DOC. The original data is in file 98DLTDAT.ZIP which is archived at The Marine Biological Lab, Woods Hole, MA.

Notes: Lake temperature is measured near the lake depth sensor. Therefore the lake depth measurements give the depth at which lake temperature is measured. Toolik lake depth is lake surface to the depth of the sensor which is mounted on the near-shore bottom at approximately 2 meters depth. June into August the lake depth sensor became erratic. It was replace August 7th but in late December it stopped working. Soil temperatures consist of two profiles in a moss dominated plant community. They are within 3 meters of the weather station. Late August 1997 soil profile #1 at 50 and 100 cm could not be reset. They were put in at 20 cm shallower. In August 1998 soil profiles were reset on a white fiberglass rod and 5, 10, 150 cm depths added. Pan evaporation measurements are only made from June through August.

Sampling Description.

None

Data Table

Variable Name Variable Description Data Type Units DateTime Format Code Information Missing Value Code
YEAR Year in datetime   yyyy    
DATE Date datetime   dd-mmm-yyyy    
MONTH Month of collection text        
DAYS Julian plus fraction of day. text        
ID Datalogger program step number number     #N/A=Missing or Not Measured
JULIAN Julian date datetime   ddd    
HOUR Time - Alaska standard time datetime   hhmm    
BATTERY Battery voltage of datalogger number volt     #N/A=Missing or Not Measured
LAKE DEPTH Toolik lake depth number centimeter     #N/A=Missing or Not Measured
EVAPO DEPTH Evaporation Pan depth number millimeter     #N/A=Missing or Not Measured
EVAPO TEMP Evaporation pan water temperature Celsius number celsius     #N/A=Missing or Not Measured
SOIL1 MOSS Soil profile 1 moss temperature number celsius     #N/A=Missing or Not Measured
SOIL1 5CM Soil profile 1 temperature 10 cm Celsius number celsius     #N/A=Missing or Not Measured
SOIL1 10CM Soil profile 1 temperature 20 cm Celsius number celsius     #N/A=Missing or Not Measured
SOIL1 20CM Soil profile 1 temperature 20 cm Celsius number celsius     #N/A=Missing or Not Measured
SOIL1 50CM Soil profile 1 temperature 50 cm Celsius number celsius     #N/A=Missing or Not Measured
SOIL1 100CM Soil profile 1 temperature 100 cm Celsius number celsius     #N/A=Missing or Not Measured
SOIL1 150CM Soil profile 1 temperature 150 cm Celsius number celsius     #N/A=Missing or Not Measured
SOIL2 MOSS Soil profile 2 moss temperature number celsius     #N/A=Missing or Not Measured
SOIL2 5CM Soil profile 2 temperature 10 cm Celsius number celsius     #N/A=Missing or Not Measured
SOIL2 10CM Soil profile 2 temperature 20 cm Celsius number celsius     #N/A=Missing or Not Measured
SOIL2 20CM Soil profile 2 temperature 20 cm Celsius number celsius     #N/A=Missing or Not Measured
SOIL2 50CM Soil profile 2 temperature 50 cm Celsius number celsius     #N/A=Missing or Not Measured
SOIL2 100CM Soil profile 2 temperature 100 cm Celsius number celsius     #N/A=Missing or Not Measured
SOIL2 150CM Soil profile 2 temperature 150 cm Celsius number celsius     #N/A=Missing or Not Measured
SOIL1 80CM Soil profile 1 temperature 80 cm Celsius number celsius     #N/A=Missing or Not Measured
LAKE TEMP Lake Temp at LAKE DEPTH number celsius     #N/A=Missing or Not Measured
Comments Notes on data. text        
Please contact arc_im@mbl.edu with questions, comments, or for technical assistance regarding this web site.