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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 via LTER Data Poral
Dataset ID:2008dltlo.06
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 2008.
Investigator 1: 
First Name:Gus
Last Name:Shaver
Organization:Marine Biological Lab
Address line 2:
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 3:7 MBL St.
City:Woods Hole
State:MA
Zip Code:02543
Country:USA
Investigator 3: 
First Name:Christie
Last Name:Haupert
Organization:
Address line 3:
City:
State:
Zip Code:
Country:
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 the sensors that are measured every 10 minutes and averaged every three hours are include, 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.10024&urlTail=weather/tl/data/2008dltlo.csv
Data File Name 2008dltlo.csv
Beginning Date 1/1/2008
End Date 12/31/2008
Number of Data Records 2927
Other Files to Reference
Availability Status
Quality Control Information
Maintenance Description
Log of Changes: Ver:1 Received data from Christie and checked and put it on the web. JimL April2009
Version 2: Upadte LTERNET Data Access server proxy link for Excel and comma delimited data files. Changed from knb to das in url.
Version3: Deleted the evapration pan data; corrected the soil temperature set 10 and 20 cm which were switiched in August when the new logger was deployed. 21Oct2010 Jim L
Version 4: Updated the metadata form and EML is now 2.1.0 JimL 19Novv2012
Version 5: Updated the form to include site name and missing code. JimL 3Apr13
Version 6: Corrected Distrubution URL. It had xlsfiles in the path. Jim L 19Jun14
 
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 Coords in WGS84(ITRF00 - Ep. 1997.0) Accuracy should be good to ~ 90cm 68.628228973N, 149.596001285W, Height (above ellipsoid) is 726.5m, give or take ~1.5m 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 68.628256 In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees In Decimal Degrees  
Longitude -149.59598 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:Experimental Design/Sampling Description:
Weather data at Toolik Lake has been collected by the Arctic LTER since June 1988. The station is located about 50 meters south of the lake's edge in a sedge/moss (Tomenthypnum nitens-Carex bigelowii) vegetation. Sensors that are 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. Pan evaporation are only measured during the summer months. The hourly data are in the file yyyyDLTLH.DAT, the three hourly data are in yyyyDLTLO.DAT, and daily summaries are in yyyyDLTLD.DAT. A second data logger 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 yyyyDLTDAT.ZIP which is archived at The Marine Biological Lab, Woods Hole, MA.

NOTES AND COMMENTS: Lake temperature is measured at the depth that lake depth measurement is made. Soil temperatures consist of two profiles in a moss dominated plant community. They are within 3 meters of the weather station. . See additional notes under Comments variable

On August 19-20, 2008 - the weather station underwent an upgrade to the main data logger to a Campbell CR3000. Wind speed at 1 m was removed; Wind speed at 5m was replaced Vaisala HMP45C. Pyranometer was replaced w/ Kipp and Zonen CMP6 (ventilation unit - year round numbers are now available). Temperature/RH at 1 m was removed and replaced w/ an RMYoung T/RH probe at 3 m. The multiplexer for thermocouples was replaced with a AM25T 25-Channel Solid-State Multiplexer. A Campbell 107 thermister probe was also added to measure lake temperature but was not hooked up until Aug 2009.

Note that the evaporation pan was not set up in 2008.
Corrected SOIL2 20CM and SOIL2 10CM which were switched when the new logger was deployed . Jim Laundre 21Oct 2010.

Data Table

Variable Name Variable Description Data Type Units DateTime Format Code Information Missing Value Code
YEAR Year data collected datetime   yyyy   #N/A=Missing or Not Measured
DATE Date data collected datetime   dd-mmm-yyyy hh24:mi   #N/A=Missing or Not Measured
MONTH Month of collection datetime   mm   #N/A=Missing or Not Measured
DAYS Day of Year plus fraction of day number number     #N/A=Missing or Not Measured
ID Data logger program step number number     #N/A=Missing or Not Measured
JULIAN Day of Year Number of days since January 1 number number     #N/A=Missing or Not Measured
HOUR Time - Alaska standard time datetime   hh24mi   #N/A=Missing or Not Measured
BATTERY Battery voltage of data logger 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 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 number celsius     #N/A=Missing or Not Measured
SOIL1 10CM Soil profile 1 temperature 20 cm number celsius     #N/A=Missing or Not Measured
SOIL1 20CM Soil profile 1 temperature 20 cm number celsius     #N/A=Missing or Not Measured
SOIL1 50CM Soil profile 1 temperature 50 cm number celsius     #N/A=Missing or Not Measured
SOIL1 100CM Soil profile 1 temperature 100 cm number celsius     #N/A=Missing or Not Measured
SOIL1 150CM Soil profile 1 temperature 150 cm 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 number celsius     #N/A=Missing or Not Measured
SOIL2 20CM Soil profile 2 temperature 20 cm number celsius     #N/A=Missing or Not Measured
SOIL2 10CM Soil profile 2 temperature 20 cm number celsius     #N/A=Missing or Not Measured
SOIL2 50CM Soil profile 2 temperature 50 cm number celsius     #N/A=Missing or Not Measured
SOIL2 100CM Soil profile 2 temperature 100 cm number celsius     #N/A=Missing or Not Measured
SOIL2 150CM Soil profile 2 temperature 150 cm 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.